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Summary of Contents for M+D JS-MD 1C 2017

  • Page 3 MD01-AFM-00-001 JS-MD 1C Aircraft Flight Manual Issue: 02 JS-MD 1C AIRCRAFT FLIGHT MANUAL Type: JS-MD Single Model: JS-MD 1C Serial number: Registration Number: Document number: MD01-AFM-00-001 Title: JS-MD 1C Aircraft Flight Manual Issue Date of issue: 14 September 2017 Digital unterschrieben von Sören Responsible for content: Pedersen Datum: 2017.09.18 16:55:13 +02'00'...
  • Page 4 MD01-AFM-00-001 JS-MD 1C Aircraft Flight Manual Issue: 02 Intentionally left blank Rev. 00 Rev. Date: 14.09.2017 Page ii...
  • Page 5 MD01-AFM-00-001 JS-MD 1C Aircraft Flight Manual Issue: 02 0. Document Management 0.1 List of Issues Issue Date Reason for Change 15.05.2017 Initial Issue Editorial Changes, 14.09.2017 Section 2.13 (Placard Placement adjusted) Rev. 00 Rev. Date: 14.09.2017 Page 0–1...
  • Page 6: List Of Effective Sections

    MD01-AFM-00-001 JS-MD 1C Aircraft Flight Manual Issue: 02 0.2 List of effective sections Number Section Revision Date Reference of Pages 14.09.2017 14.09.2017 14.09.2017 14.09.2017 14.09.2017 14.09.2017 14.09.2017 14.09.2017 14.09.2017 14.09.2017 14.09.2017 14.09.2017 Rev. 00 Rev. Date: 14.09.2017 Page 0–2...
  • Page 7: Record Of Amendments

    MD01-AFM-00-001 JS-MD 1C Aircraft Flight Manual Issue: 02 0.3 Record of Amendments Date of Issue/ Date of Signature Revision Insertion Rev. 00 Rev. Date: 14.09.2017 Page 0–3...
  • Page 8: Table Of Contents

    MD01-AFM-00-001 JS-MD 1C Aircraft Flight Manual Issue: 02 0.4 Table of contents JS-MD 1C AIRCRAFT FLIGHT MANUAL ..........i Document Management ............0–1 Record of Revision ..Fehler! Textmarke nicht definiert. List of effective sections ..........0–2 Record of Amendments ..........0–3 Table of contents ............
  • Page 9 MD01-AFM-00-001 JS-MD 1C Aircraft Flight Manual Issue: 02 Spiral dive recovery ............3–4 Excessive sideslip recovery..........3–6 Electrical fire ..............3–7 Land as soon as possible..........3–7 3.10 Other emergencies ............3–8 Normal operating procedures ..........4–1 Introduction ..............4–1 Rigging and de-rigging ...........
  • Page 10 MD01-AFM-00-001 JS-MD 1C Aircraft Flight Manual Issue: 02 Ground handling .............. 8-3 Cleaning and care ............8-5 Long-term storage ............8-9 Supplements ................9-1 Introduction ..............9-1 List of ancillary equipment ..........9-1 10. Service Bulletins ..............10-1 11. STCs and Minor Change Approvals ........11-1 Rev.
  • Page 11: General

    MD01-AFM-00-001 JS-MD 1C Aircraft Flight Manual Issue: 02 1. General 1.1 Introduction This Flight Manual has been prepared to provide pilots and instructors with all the information required for safe and efficient operation of the JS-MD 1C. All the data that is required by the Airworthiness Requirement CS-22 to furnish the pilot is contained in this manual.
  • Page 12: Certification Basis

    MD01-AFM-00-001 JS-MD 1C Aircraft Flight Manual Issue: 02 1.2 Certification basis This aircraft, with production designation (type) JS-MD Single (model JS-MD 1C) has been approved by the European Aviation Safety Agency (EASA) in accordance with CS-22 including Amendment AMC 22.1555 (a), AMC 22.1585 (f). The category of airworthiness is U (Utility).
  • Page 13: Descriptive Data

    MD01-AFM-00-001 JS-MD 1C Aircraft Flight Manual Issue: 02 1.4 Descriptive data The JS-MD 1C is a high-performance single-seat sailplane of a conventional layout with a T-tail. Two wingspan configurations (18 m and 21 m) can be selected, both feature full-span flaperons. The cockpit is designed to protect the pilot in the event of a crash.
  • Page 14: Technical Data

    MD01-AFM-00-001 JS-MD 1C Aircraft Flight Manual Issue: 02 1.5 Technical data Geometry JS-MD 1C 18 m JS-MD 1C 21 m Wing Span 18 m / 59.06 ft 21 m/ 68.88 ft 11.19 m² / 12.25 m² / Wing Area 120.45 ft 131.86 ft Aspect Ratio 28.8...
  • Page 15: Three-View Drawings

    MD01-AFM-00-001 JS-MD 1C Aircraft Flight Manual Issue: 02 1.6 Three-view drawings JS-MD 1C 18 m Figure 1.6.1-1 Rev. 00 Rev. Date: 14.09.2017 Page 1–5...
  • Page 16 MD01-AFM-00-001 JS-MD 1C Aircraft Flight Manual Issue: 02 JS-MD 1C 21 m Figure 1.6.2-1 Rev. 00 Rev. Date: 14.09.2017 Page 1–6...
  • Page 17: Limitations

    MD01-AFM-00-001 JS-MD 1C Aircraft Flight Manual Issue: 02 2. Limitations 2.1 Introduction Section 2 includes operating limitations, instrument markings, and basic placards necessary for safe operation of the aircraft, standard systems and standard equipment. The limitations included in this section and the limitations under Section 9 have been approved by EASA.
  • Page 18: Airspeed Limits

    MD01-AFM-00-001 JS-MD 1C Aircraft Flight Manual Issue: 02 2.2 Airspeed limits Speed limitations and their operational significance are illustrated in Table 2.2.0-1. Speed Remarks 18 m 21 m Do not exceed this speed in Never exceed 270 km/h any operation and do not use speed 146 kts more than 1/3 of control...
  • Page 19 MD01-AFM-00-001 JS-MD 1C Aircraft Flight Manual Issue: 02 Deflection Flap setting (°) 18 m 21 m -3° 270 km/h 146 kts +0° +5° 230 km/h / 124 kts +13.5° 165 km/h / 89 kts +16.6° 165 km/h / 89 kts +20°...
  • Page 20: Airspeed Indicator Marking

    MD01-AFM-00-001 JS-MD 1C Aircraft Flight Manual Issue: 02 2.3 Airspeed indicator marking The airspeed indicator markings and their colour code significance are given in Table 2.3.0-1: Marking Significance 18 m 21 m Positive Flap Operating Range. (Lower limit is 1.1 White Arc 98 to 160 km/h S0 1...
  • Page 21: Mass

    MD01-AFM-00-001 JS-MD 1C Aircraft Flight Manual Issue: 02 2.4 Mass The mass limitations for the JS-MD 1C are given in Table 2.4.0-1: Mass limits 18 m 21 m Mass definition 600 kg 720 kg Maximum All-Up Mass 1323 lbs 1587 lbs Maximum Take-Off Mass for winch 600 kg 600 kg...
  • Page 22: Centre Of Gravity

    MD01-AFM-00-001 JS-MD 1C Aircraft Flight Manual Issue: 02 2.5 Centre of gravity The following table shows the allowable CG range for the JS-MD 1C in the 18 m and 21 m configurations: Distance from datum Centre of Gravity range (in flight) 18 m 21 m 244 mm...
  • Page 23 MD01-AFM-00-001 JS-MD 1C Aircraft Flight Manual Issue: 02 Table 2.5.0-2 gives the forward and rear centre of gravity limits (no payload) for different empty masses that will allow a cockpit range of 70 kg to 115 kg. Empty Centre of Gravity range Forward limit to allow a Rear limit to allow a Empty mass...
  • Page 24: Approved Manoeuvres

    MD01-AFM-00-001 JS-MD 1C Aircraft Flight Manual Issue: 02 2.6 Approved manoeuvres This aircraft is certified in the Utility category (U). The following aerobatic manoeuvres are permitted in the 18 m configuration only: • Lazy Eight • Chandelle • Steep turns •...
  • Page 25: Flight Load Factor Limits

    MD01-AFM-00-001 JS-MD 1C Aircraft Flight Manual Issue: 02 2.7 Flight load factor limits The minimum and maximum approved manoeuvring loads are given in the Table 2.7.0-1 below: Load Condition factor 203 km/h Maximum positive manoeuvre + 5.3 110 kts 203 km/h - 2.65 Maximum negative manoeuvre 110 kts...
  • Page 26: Flight Crew

    MD01-AFM-00-001 JS-MD 1C Aircraft Flight Manual Issue: 02 2.8 Flight crew The minimum and maximum pilot mass is indicated on the cockpit placard. Minimum cockpit load: 70 kg (154.3 lbs) Maximum cockpit load: 115 kg (253.5 lbs) CAUTION: If the measured empty CG is not within the normal empty mass CG range, the minimum and maximum cockpit loads must be calculated and the cockpit placard values corrected accordingly.
  • Page 27: Types Of Operation

    MD01-AFM-00-001 JS-MD 1C Aircraft Flight Manual Issue: 02 2.9 Types of operation The JS-MD 1C is approved for: • VFR day • Cloud flying only in 18 m configuration without water ballast where national regulations permit NOTE: For Cloud flying the take-off mass must not exceed the Maximum Take-Off Mass without Water ballast as given in Section 2.4, and engine must be retracted (if fitted).
  • Page 28: Minimum Equipment List

    MD01-AFM-00-001 JS-MD 1C Aircraft Flight Manual Issue: 02 2.10 Minimum equipment list Instruments and other equipment on the minimum equipment list must be approved. Refer to the accessory approval section in the MD01- AMM-00-001 JS-MD 1C Aircraft Maintenance Manual for details. The minimum equipment: •...
  • Page 29: Aerotow And Winch Launching

    MD01-AFM-00-001 JS-MD 1C Aircraft Flight Manual Issue: 02 2.11 Aerotow and winch launching Maximum approved towing speeds and recommended weak link ratings for the JS-MD 1C are listed in Table 2.11.0-1. Maximum Maximum Recommended Launch Method Speed Speed Weak link (18 m) (21 m) 750 daN...
  • Page 30: Other Limitations

    MD01-AFM-00-001 JS-MD 1C Aircraft Flight Manual Issue: 02 2.12 Other limitations Limitations when flying with water ballast Intentional manoeuvres not permitted when flying with water ballast: • Loops • Chandelles • Lazy Eights • All aerobatic manoeuvres listed in the Aerobatic category •...
  • Page 31 MD01-AFM-00-001 JS-MD 1C Aircraft Flight Manual Issue: 02 Temperature restrictions when carrying water Flights with water ballast are prohibited in conditions where there is a risk of icing. When the outside air temperature is below 0°C (32°F), water ballast must be dumped or a descent to lower altitudes (higher temperatures) must be conducted.
  • Page 32 MD01-AFM-00-001 JS-MD 1C Aircraft Flight Manual Issue: 02 (108 kts). In emergencies, the airbrakes may be extended up V defined in Section 2.2. Above 250 km/h (135 kts) the airbrakes are sucked open abruptly after unlocking, resulting in a sharp deceleration which may result in pilot induced oscillations (P.I.O.).
  • Page 33: Limitations Placards

    MD01-AFM-00-001 JS-MD 1C Aircraft Flight Manual Issue: 02 2.13 Limitations placards The placards given in Figure 2.13.0-1 and Figure 2.13.0-2 are fixed to the wall of the cockpit in the field of view of the pilot, preferably the left side, and contain the most important mass and speed limitations. Figure 2.13.0-1 Figure 2.13.0-2 The placard given in Figures 2.13.0-1 and 2.13.0-2 must list the same...
  • Page 34 MD01-AFM-00-001 JS-MD 1C Aircraft Flight Manual Issue: 02 The calculated minimum and maximum cockpit loads must be entered with a permanent marker on the cockpit placard (as illustrated in Fig 2.13.0-3) and must correlate with the values in the mass and balance report.
  • Page 35: Emergency Procedures

    MD01-AFM-00-001 JS-MD 1C Aircraft Flight Manual Issue: 02 3. Emergency procedures 3.1 Introduction Section 3 provides checklist and amplified procedures for coping with emergencies that may occur. 3.2 Canopy jettison To jettison the canopy, pull both left and right canopy jettison latches (labelled or engraved as in the picture below) as far as possible and push the canopy upward with the latches.
  • Page 36: Bailing Out

    MD01-AFM-00-001 JS-MD 1C Aircraft Flight Manual Issue: 02 Figure 3.2.0-3 3.3 Bailing out The bailing out procedure is as follows: 1. Jettison the canopy as described in Section 3.2. 2. Push the instrument console upwards. 3. Release the safety harness. 4.
  • Page 37: Stall Recovery

    MD01-AFM-00-001 JS-MD 1C Aircraft Flight Manual Issue: 02 3.4 Stall recovery The JS-MD 1C has a very mild stall with ample warning. Stalls can easily be recognised by the following: • The nose is in a higher than normal attitude relative to the horizon •...
  • Page 38: Spin Recovery

    MD01-AFM-00-001 JS-MD 1C Aircraft Flight Manual Issue: 02 3.5 Spin recovery Spin recovery is performed using the standard recovery procedures: 1. Apply rudder opposite direction to the spin rotation 2. Simultaneously release the elevator back pressure by moving the stick forward to the neutral position 3.
  • Page 39 MD01-AFM-00-001 JS-MD 1C Aircraft Flight Manual Issue: 02 1. The aircraft terminates spinning automatically should the pilot continue applying into-spin control inputs. 2. During excessive slip angles with full rudder deflection. Indications of a spiral dive are high bank angle, increasing airspeed and a high G-loading.
  • Page 40: Excessive Sideslip Recovery

    MD01-AFM-00-001 JS-MD 1C Aircraft Flight Manual Issue: 02 3.7 Excessive sideslip recovery An excessive sideslip may occur when the pilot applies full cross control input. At a slip angle exceeding 20° (approximately 40° on the yaw string) rudder control forces reverse as the rudder is sucked into the wake of the stalled fin.
  • Page 41: Electrical Fire

    MD01-AFM-00-001 JS-MD 1C Aircraft Flight Manual Issue: 02 3.8 Electrical fire An electrical fire is very unlikely due to the protection with circuit breakers for all systems. Each battery has a fuse at the terminals and each battery supply has a circuit breaker switch on the instrument panel.
  • Page 42: Other Emergencies

    MD01-AFM-00-001 JS-MD 1C Aircraft Flight Manual Issue: 02 3.10 Other emergencies Cable failure during winch launch In case of a cable failure during a winch launch, take the following actions: 1. Immediately push the stick sufficiently forward to establish a nose-down attitude in order to regain flying speed.
  • Page 43 MD01-AFM-00-001 JS-MD 1C Aircraft Flight Manual Issue: 02 Flight with asymmetric water ballast load Asymmetric water ballast load may develop during flight if: 1. A main tank dump valve leaks 2. One main tank dumps water faster than that the other, due to a partial opening valve, or dumping during prolonged unbalanced flight 3.
  • Page 44 MD01-AFM-00-001 JS-MD 1C Aircraft Flight Manual Issue: 02 c. If only one valve is dumping water, close dumping valves to prevent full water ballast asymmetry developing. If the asymmetrical loading cannot be rectified, the pilot is strongly recommended to: • Land at a suitable airport or field as soon as possible.
  • Page 45 MD01-AFM-00-001 JS-MD 1C Aircraft Flight Manual Issue: 02 Spin recovery procedure with asymmetric water ballast load It may be possible to recover the JS-MD 1C from a spin with a significant asymmetric water ballast loading, provided correct recovery procedures are followed. To recover from a spin towards the heavy wing, use the following procedure: 1.
  • Page 46 MD01-AFM-00-001 JS-MD 1C Aircraft Flight Manual Issue: 02 Ground loop If a landing area is too short to stop safely before the end, a ground loop may be initiated: 1. Apply maximum wheel brake to reduce energy as much as possible 2.
  • Page 47 MD01-AFM-00-001 JS-MD 1C Aircraft Flight Manual Issue: 02 Icing Controls may freeze up when flying in icing conditions. If ice formation is observed during flight, immediately descend below the freezing altitude level. Control surfaces should be moved continuously and airbrakes operated frequently to avoid flight control freezing. The direct vision panel can be opened to increase visibility.
  • Page 48 MD01-AFM-00-001 JS-MD 1C Aircraft Flight Manual Issue: 02 Intentionally left blank Rev. 00 Rev. Date: 14.09.2017 Page 3–14...
  • Page 49: Normal Operating Procedures

    MD01-AFM-00-001 JS-MD 1C Aircraft Flight Manual Issue: 02 4. Normal operating procedures 4.1 Introduction Section 4 provides checklist and amplified procedures for the conduct of normal operations. Normal operations associated with optional systems can be found in Section 9. Rev. 00 Rev.
  • Page 50: Rigging And De-Rigging

    MD01-AFM-00-001 JS-MD 1C Aircraft Flight Manual Issue: 02 4.2 Rigging and de-rigging Rigging The JS-MD 1C can be rigged by three people without rigging aids or by two people if a fuselage cradle and wing stands are available. Wing rigging 1.
  • Page 51 MD01-AFM-00-001 JS-MD 1C Aircraft Flight Manual Issue: 02 13. For JS-MD 1C, pull wingtip locking lever fully back and slide wingtip beam into main wing. Push the wingtip locking lever forward and ensure it locks positively by pushing the lever over- centre.
  • Page 52 MD01-AFM-00-001 JS-MD 1C Aircraft Flight Manual Issue: 02 Mount tailplane 1. Clean the tailplane pins and bushes 2. Slide the tailplane onto the fin. Take care that the elevators are sliding into the elevator auto-coupler. 3. Make sure the Mylar edge on the tailplane does not snag on the fin. 4.
  • Page 53 MD01-AFM-00-001 JS-MD 1C Aircraft Flight Manual Issue: 02 Install Auxiliary items 1. Insert the batteries into position in the luggage compartment behind the seat headrest and under the seat pan or in the tail. Secure the batteries in position with the battery retainers. 2.
  • Page 54 MD01-AFM-00-001 JS-MD 1C Aircraft Flight Manual Issue: 02 De-rigging Ensure the non-expendable tail tank is drained of water. Remove Auxiliary items 1. Remove the main batteries. Lock the battery retainers back in position. 2. Remove the total energy tube and temporary equipment (Logger etc.).
  • Page 55 MD01-AFM-00-001 JS-MD 1C Aircraft Flight Manual Issue: 02 4. Removing the wings 1. Unlock the airbrakes from the cockpit 2. Set the flap handle in Position 2 or Position 3 and move the control stick to the centre position. 3. If bug wipers are fitted, release both wipers by approximately 1.5 meters and place them in a safe place while de-rigging the sailplane.
  • Page 56: Daily Inspection

    MD01-AFM-00-001 JS-MD 1C Aircraft Flight Manual Issue: 02 CAUTION: Take care not to damage the unlocked airbrakes when using a trailer with a hinged top (e.g. Cobra, SWAN, Comet etc.). It is likely that damage will result if the airbrakes are partially or fully open when lifting the trailer top.
  • Page 57 MD01-AFM-00-001 JS-MD 1C Aircraft Flight Manual Issue: 02 4. Ensure the proper connection of flaperon and airbrake system: • With the control stick in the neutral position and the flap lever in position 3, the flaperon must be flush with the trailing edge at root rib, •...
  • Page 58 MD01-AFM-00-001 JS-MD 1C Aircraft Flight Manual Issue: 02 Check that the CG hook manual and automatic operation works properly. Accumulated dirt or mud may lead to improper functioning of the release hook. Check that the water drain orifice behind the landing gear box is clear.
  • Page 59 MD01-AFM-00-001 JS-MD 1C Aircraft Flight Manual Issue: 02 • Check the dump rate of the main tanks with the filler caps installed. Ensure that the dump rates of the wings are equal and faster than the dump rate of the tail tank. Fuselage General condition - check for evidence of damage to the surface finish or structural damage, pressure marks and cracks.
  • Page 60 MD01-AFM-00-001 JS-MD 1C Aircraft Flight Manual Issue: 02 Check that the tank vent holes on the left-hand side of the fin are unobstructed. Check that the amount of water in the vertical tail fin water ballast tank is correct in relation to wing water ballast and cockpit load. Check that the horizontal stabilizer is properly installed without free play.
  • Page 61: Pre-Flight Check

    MD01-AFM-00-001 JS-MD 1C Aircraft Flight Manual Issue: 02 4.4 Pre-flight check Daily Inspection Performed Control Systems Functional check, positively connected, free movement and no play Expendable Tail Tank Valve opening positively checked (bottom) Non-expendable Tail Ensure empty or correctly loaded for CG Tank (top) range Water Ballast System...
  • Page 62: Normal Procedures And Recommended Speeds

    MD01-AFM-00-001 JS-MD 1C Aircraft Flight Manual Issue: 02 4.5 Normal procedures and recommended speeds Launch procedures Winch launch Winch launching is performed using the CG hook in front of the main wheel. With a slow-accelerating winch, good aileron control is achieved using Flap 3.
  • Page 63 MD01-AFM-00-001 JS-MD 1C Aircraft Flight Manual Issue: 02 WARNING: Retracting the landing gear during the winch launch is not permitted. To release, pull the yellow release handle all the way. Releasing under tension is not recommended, as this may cause overruns on the winch drum.
  • Page 64 MD01-AFM-00-001 JS-MD 1C Aircraft Flight Manual Issue: 02 Aerotow Aerotows are performed using the nose release hook. Refer to Section 2.13 for rope lengths. Set the trim slightly forward of neutral and initiate the ground run in negative flap (Flap setting 1). This will increase aileron efficiency at low speeds.
  • Page 65 MD01-AFM-00-001 JS-MD 1C Aircraft Flight Manual Issue: 02 Flight The JS-MD 1C offers exceptionally good flying characteristics, handling and manoeuvrability. Thermalling The optimum flap setting for thermalling is Position 4 or 5. Flap setting 4 is the normal thermalling flap setting. The optimum thermal speed at maximum loading is 105 to 115 km/h (57 to 62 kts).
  • Page 66 MD01-AFM-00-001 JS-MD 1C Aircraft Flight Manual Issue: 02 Inter thermal cruise To optimise the glide performance, it is important to select the proper flap according to weight and cruise speed. The flaps modify the airfoil’s camber, maintaining laminar flow over a wide range of lift coefficients. For every speed and weight combination, there is an optimum flap setting for maximising the glide angle.
  • Page 67 MD01-AFM-00-001 JS-MD 1C Aircraft Flight Manual Issue: 02 Lightning The JS-MD 1C is not approved for flight where lightning strikes may occur. WARNING: Flights in conditions conducive to lightning strikes must be avoided. Rev. 00 Rev. Date: 14.09.2017 Page 4–19...
  • Page 68 MD01-AFM-00-001 JS-MD 1C Aircraft Flight Manual Issue: 02 Approach The circuit can be flown with flap set to Setting 3 to 5 (+5° to +16.7°). On final approach for landing the flaps can be changed to Position L (+20°) for a shorter landing with lower touch down speed. Due to high aerodynamic forces, flaps may not be extended to setting L above 160 km/h (or 86 kts).
  • Page 69 MD01-AFM-00-001 JS-MD 1C Aircraft Flight Manual Issue: 02 Any increase in airspeed increases the approach angle significantly and at V without water ballast the glide angle is steeper than 1:1. CAUTION: When on final approach, do not change to more negative flap settings (for example, from Setting L to Setting 4) without sufficient airspeed as the resulting loss of lift will cause a significant loss of height.
  • Page 70 MD01-AFM-00-001 JS-MD 1C Aircraft Flight Manual Issue: 02 Landing The correct attitude for landing is the two-point attitude with the main wheel and tail wheel making contact with the ground simultaneously. The hydraulic wheel brake is activated in the aft 20 % of airbrake lever range.
  • Page 71 MD01-AFM-00-001 JS-MD 1C Aircraft Flight Manual Issue: 02 Flying with water ballast The water ballast system allows the weight of the aircraft to be increased to achieve higher wing loadings. The water tanks are integral in the wings. In the 18 m configuration water is only carried in the inboard section. Each inboard wing tank holds approximately of 90 litres of water.
  • Page 72 MD01-AFM-00-001 JS-MD 1C Aircraft Flight Manual Issue: 02 Figure 4.5.5-1 indicates the expandable water quantity required to balance the water in the main inboard wing tanks. Figure 4.5.5- 1 NOTE: As a conservative approximation, add 1 litre of water in the bottom tail tank for every 25 litres of water in the main inboard wing tanks.
  • Page 73 MD01-AFM-00-001 JS-MD 1C Aircraft Flight Manual Issue: 02 Filling procedure Determine the quantity of water ballast to be carried. The quantity of water ballast in the tail is calculated using the graph in Fig 4.5.6-1. Determine the quantity of water to be loaded in each tank. In the 21 m configuration the tips must be filled if water is carried in the main tanks.
  • Page 74 MD01-AFM-00-001 JS-MD 1C Aircraft Flight Manual Issue: 02 • Add water ballast using the top filling port (top one) on the right hand side of the fin. Rev. 00 Rev. Date: 14.09.2017 Page 4–26...
  • Page 75 MD01-AFM-00-001 JS-MD 1C Aircraft Flight Manual Issue: 02 Dumping procedure 1. Open the valves by shifting the dump valve lever forward and down. Approximately 40 to 60 litres will be dumped in sixty seconds from the main tanks. 2. Visually check if water is dumping from both wings (the water trails can be seen below the wings near the fuselage, and at the tips in the 21 m configuration).
  • Page 76 MD01-AFM-00-001 JS-MD 1C Aircraft Flight Manual Issue: 02 WARNING: Never apply more than 0.1 bar of water pressure (filling funnel height no more than one metre above the wing) because of possible damage to the structure. WARNING: Make sure both wing tanks are filled with equal amounts of water to prevent a wing dropping on take- off.
  • Page 77 MD01-AFM-00-001 JS-MD 1C Aircraft Flight Manual Issue: 02 High altitude flight At higher altitudes the Air Speed Indicator will indicate values lower than the true airspeed due to the lower air density. This does not influence loads on the structure but does mean that the colour markings on the Air Speed Indicator are not correct at high density altitude.
  • Page 78 MD01-AFM-00-001 JS-MD 1C Aircraft Flight Manual Issue: 02 Figure 4.5.6- 2 WARNING: The aircraft is not approved for flights above 9000 m (30000 ft) above mean sea level. Flight tests for Type Certification were only conducted to 24 000 ft AMSL. CAUTION: At higher altitudes, the true airspeed (TAS) is higher than the Indicated Airspeed (IAS).
  • Page 79 MD01-AFM-00-001 JS-MD 1C Aircraft Flight Manual Issue: 02 Using bug wipers in flight The operation of the bug wipers in flight depends on the winder system installed. Refer to the instructions of the winder manufacturer for details on the operation. The following basic rules apply. Ensure sufficient battery capacity is available to perform the cleaning operation and select the correct battery source for the winders.
  • Page 80 MD01-AFM-00-001 JS-MD 1C Aircraft Flight Manual Issue: 02 Aerobatics The entry speeds and recommended maximum G-loading for approved aerobatic manoeuvres is given in table below. Entry speed Aerobatic entry Flap G-loading speed setting km/h / (kts) Lazy Eight 180 km/h (97 kts) Chandelle 150 km/h (81 kts) Steep turn...
  • Page 81: Performance

    MD01-AFM-00-001 JS-MD 1C Aircraft Flight Manual Issue: 02 5. Performance 5.1 Introduction Section 5 provides approved data for airspeed calibration, stall speeds, take-off performance and non-approved further information. The data in the charts has been computed from actual flight tests with the sailplane in good condition and using average piloting techniques.
  • Page 82 MD01-AFM-00-001 JS-MD 1C Aircraft Flight Manual Issue: 02 Stall speeds The stall speeds (IAS) for the 18 m and 21 m configurations of the JS- MD 1C are given in Tables 5.2.2-1, Tables 5.2.2-2, and Tables 5.2.2-3: Table 5.2.2.-1 gives the stall speeds for the JS-MD 1C (18 m configuration) with Airbrakes retracted and CG in the mid to rear position: 18 m configuration (mid CG)
  • Page 83 MD01-AFM-00-001 JS-MD 1C Aircraft Flight Manual Issue: 02 21 m configuration Gross weight 500 kg / 1103 lbs 720 kg / 1587 lbs Minimum Achievable Minimum Achievable Flap Setting Speed (IAS), CG fwd Speed (IAS), CG fwd (20°) 70 km/h 38 kts 87 km/h 47 kts...
  • Page 84 MD01-AFM-00-001 JS-MD 1C Aircraft Flight Manual Issue: 02 Take-off performance Not applicable. Additional information Turbulators On the lower surface of the flaperons there is a line of blow holes supplying air by NACA ducts. It is necessary to keep these holes and ducts clean for optimum performance.
  • Page 85: Non-Approved Information

    MD01-AFM-00-001 JS-MD 1C Aircraft Flight Manual Issue: 02 5.3 Non-approved information Demonstrated crosswind performance The JS-MD 1C has very good crosswind handling characteristic due to its polyhedral wing shape allowing high bank angles during touch down. The maximum demonstrated crosswind components are: During aerotow: 25 km/h (14 kts) During winch launch:...
  • Page 86 MD01-AFM-00-001 JS-MD 1C Aircraft Flight Manual Issue: 02 Flight polar Figure 5.3.2-1 shows the calculated polar for the JS-MD 1C in the 21 mfor two wing loading cases: Figure 5.3.2.2 Figure 5.3.2- 1 Rev. 00 Rev. Date: 14.09.2017 Page 5–6...
  • Page 87 MD01-AFM-00-001 JS-MD 1C Aircraft Flight Manual Issue: 02 Noise data Not applicable to the pure sailplane. Rev. 00 Rev. Date: 14.09.2017 Page 5–7...
  • Page 88 MD01-AFM-00-001 JS-MD 1C Aircraft Flight Manual Issue: 02 Intentionally left blank Rev. 00 Rev. Date: 14.09.2017 Page 5–8...
  • Page 89: Weight And Balance

    MD01-AFM-00-001 JS-MD 1C Aircraft Flight Manual Issue: 02 6. Weight and balance 6.1 Introduction This section contains the payload range for the JS-MD 1C sailplane within which it can be operated safely. The procedures for weighing and establishing the permitted payload range is given in MD01-AMM-00-001 JS-MD 1C Aircraft Maintenance Manual, including: •...
  • Page 90 MD01-AFM-00-001 JS-MD 1C Aircraft Flight Manual Issue: 02 Permitted pilot weights S/N: Empty Empty weight Without tail With ___ kg Approved Date position EMPTY battery Tail Battery Date Signed Table 6.2.0- 1 For the calculation of the permitted maximum and minimum pilot weight refer to formulas given in the MD01-AMM-00-001 JS-MD 1C Aircraft Maintenance Manual Section 9.
  • Page 91: Permitted Payload-Range And Cg Envelope

    MD01-AFM-00-001 JS-MD 1C Aircraft Flight Manual Issue: 02 6.3 Permitted payload-range and CG envelope The JS-MD 1C CG envelope is based on the allowable flying mass and CG ranges given in Section 2.7. Care must be taken that the CG stays within the allowable limits. The following loads have an effect on the CG position: •...
  • Page 92 MD01-AFM-00-001 JS-MD 1C Aircraft Flight Manual Issue: 02 Figure 6.3.0-1 Max Mass Moment arm Loading point inch Pilot (with parachute) 253.5 -575 -22.6 Pilot Nose ballast (removable) 24.3 -1760 -69.3 NoseB Water ballast - main 396.8 WingM Expendable tail tank 16.5 4570 179.9...
  • Page 93 MD01-AFM-00-001 JS-MD 1C Aircraft Flight Manual Issue: 02 NOTE: The moment arm of the main water ballast tanks is a conservative approximation - the moment arm changes from 190 mm to 200 mm as the main tanks are filled. CAUTION: Various types of tail batteries are used. In Table 6.4.2-1a a tail battery weighing 2.7 kg (5.95 lbs) is listed.
  • Page 94 MD01-AFM-00-001 JS-MD 1C Aircraft Flight Manual Issue: 02 Example: Determine if the following loading falls within the allowable envelope: • Empty aircraft: 312 kg, CG position 622 mm • Pilot with parachute weighs 90 kg • Both main tank and expendable tail tanks filled to capacity. •...
  • Page 95 MD01-AFM-00-001 JS-MD 1C Aircraft Flight Manual Issue: 02 Figure 6.3.0-2 Figure 6.3.0-3 gives the envelope for the 21 m configuration. Rev. 00 Rev. Date: 14.09.2017 Page 6-7...
  • Page 96 MD01-AFM-00-001 JS-MD 1C Aircraft Flight Manual Issue: 02 Figure 6.3.0-3 Rev. 00 Rev. Date: 14.09.2017 Page 6-8...
  • Page 97: Optimisation Of Centre Of Gravity

    MD01-AFM-00-001 JS-MD 1C Aircraft Flight Manual Issue: 02 6.4 Optimisation of centre of gravity The centre of gravity may be shifted toward the aft 25 % of the CG to obtain optimum climb performance. The procedure to set up the CG optimally is as follows: 1.
  • Page 98 MD01-AFM-00-001 JS-MD 1C Aircraft Flight Manual Issue: 02 Expendable tail tank This tank is used only to offset the centre of gravity change due to the water ballast in the main wing tanks. Mass Moment arm Loading point inch Expendable tail tank 16.5 4630 182.3...
  • Page 99 MD01-AFM-00-001 JS-MD 1C Aircraft Flight Manual Issue: 02 Tail battery Installing the tail battery moves the centre of gravity aft. The required minimum cockpit weight is higher when the tail battery is installed. The table below indicates the maximum weight and moment arm of the fin battery.
  • Page 100 MD01-AFM-00-001 JS-MD 1C Aircraft Flight Manual Issue: 02 Fuselage tanks (optional) Fuselage tanks may optionally be installed instead of the fuel tanks of the sustainer system. Filling the fuselage tanks moves the centre of gravity aft. The required minimum cockpit weight is higher when water is added to the fuselage tanks.
  • Page 101 MD01-AFM-00-001 JS-MD 1C Aircraft Flight Manual Issue: 02 Non-expendable tail tank Adding water to the non-expendable ballast tail tank moves the centre of gravity rearwards. The required minimum cockpit weight increases when water is added to the tail tank. The table below indicates the maximum weight and moment arm of the non-expendable ballast tank.
  • Page 102 MD01-AFM-00-001 JS-MD 1C Aircraft Flight Manual Issue: 02 Removable nose ballast weights Installing nose ballast weights moves the centre of gravity forward. The required minimum cockpit weight becomes lower when nose weights are installed. The table below indicates the maximum weight and moment arm of the nose trimming weights.
  • Page 103: System Description

    MD01-AFM-00-001 JS-MD 1C Aircraft Flight Manual Issue: 02 7. System description 7.1 Introduction This section gives a description of the aircraft systems together with instruction on the use of it. A detailed technical description of the systems with drawings can be found in the MD01-AMM-00-001 JS- MD 1C Aircraft Maintenance Manual Section 2.
  • Page 104: Cockpit Controls

    MD01-AFM-00-001 JS-MD 1C Aircraft Flight Manual Issue: 02 7.2 Cockpit controls Elevator and aileron The elevator and aileron are controlled conventionally by the control stick. Various stick grip options are available with integrated instrument control buttons or just the radio transmit button (press-to-talk). A leather boot covers the bottom of the stick.
  • Page 105 MD01-AFM-00-001 JS-MD 1C Aircraft Flight Manual Issue: 02 Trim The trim knob (green knob) is located on the left side of the cockpit below the airbrake lever. Slider trim system: If the slider trim system is installed, the trim can be adjusted when the trim knob is pressed downwards.
  • Page 106 MD01-AFM-00-001 JS-MD 1C Aircraft Flight Manual Issue: 02 Rudder The rudder is controlled by the rudder pedals in the front section of the fuselage. The rudder pedal fore and aft position is adjustable in-flight for comfort and to accommodate different size pilots. The rudder pedal adjuster handle is built into the side of the centre console.
  • Page 107 MD01-AFM-00-001 JS-MD 1C Aircraft Flight Manual Issue: 02 Flap The flap control (Figure 7.2.4-1a) is the black handle at the left-hand side of the cockpit. The flap handle can be unlocked by twisting it slightly clockwise as seen from the rear. Flap Lever Figure 7.2.4-1a...
  • Page 108 MD01-AFM-00-001 JS-MD 1C Aircraft Flight Manual Issue: 02 Release system The nose and CG hooks are operated simultaneously when the release handle is pulled. The release handle is the yellow handle positioned on the left-hand cockpit side in front of the flap handle (Figure 7.2.5-1). Figure 7.2.5- 1 Rev.
  • Page 109 MD01-AFM-00-001 JS-MD 1C Aircraft Flight Manual Issue: 02 Ventilation control The cockpit ventilation is controlled with two air vents: 1. The Adjustable Ball type vent, installed in the right cockpit console (Figure 7.2.6-1) 2. The Scoop window fitted on the sliding window (optional). The canopy demisting is achieved by vent holes permanently allowing airflow on the front of the canopy.
  • Page 110: Instrument Panel

    MD01-AFM-00-001 JS-MD 1C Aircraft Flight Manual Issue: 02 7.4 Instrument panel The instrument panel is integral with the canopy and lifts to facilitate entering and exiting from the aircraft. The canopy can be removed from the instrument console by supporting the canopy and pulling back on both red jettison levers on the sides of the canopy frame.
  • Page 111: Microphone And Antenna

    MD01-AFM-00-001 JS-MD 1C Aircraft Flight Manual Issue: 02 Figure 7.3.0- 2 NOTE: The master switch block and fuse area may vary from the examples shown above, according to the owner’s requirements and language. 7.5 Microphone and antenna The plugs for microphone and antenna from the canopy frame are behind the instrument panel.
  • Page 112: Landing Gear System

    MD01-AFM-00-001 JS-MD 1C Aircraft Flight Manual Issue: 02 7.6 Landing gear system The landing gear handle is located on the right-hand side of the cockpit and labelled as illustrated in Figure 7.5.0-1. Pulling the handle backwards retracts the wheel and pushing it forward extends the wheel. The handle is rotated firmly towards the cockpit side to lock in the extended and retracted position.
  • Page 113: Seats And Safety Harness

    MD01-AFM-00-001 JS-MD 1C Aircraft Flight Manual Issue: 02 7.7 Seats and safety harness The seatback is adjustable by two means: 1. The seatback base can be moved forwards and rearwards by removing two thumbscrews on the seatback pivot point and setting the seatback to the desired position (Figure 7.6.0-1).
  • Page 114 MD01-AFM-00-001 JS-MD 1C Aircraft Flight Manual Issue: 02 Seatback adjuster Figure 7.6.0- 2 The safety harness is a four-point system. The lower straps pass through the seat pan and are anchored to the fuselage skin. The shoulder straps pass through the seatback and around the lift tube structure behind the pilot’s shoulders.
  • Page 115: Pitot And Static System

    MD01-AFM-00-001 JS-MD 1C Aircraft Flight Manual Issue: 02 7.8 Pitot and static system The aircraft pneumatic system consists of: • Static (P ) piping for ASI and Altimeter STAT • Dynamic (P ) piping for ASI • Static piping for variometer from fin probe •...
  • Page 116 MD01-AFM-00-001 JS-MD 1C Aircraft Flight Manual Issue: 02 Figure 7.7.0-1 Rev. 00 Rev. Date: 14.09.2017 Page 7-14...
  • Page 117: Airbrake System

    MD01-AFM-00-001 JS-MD 1C Aircraft Flight Manual Issue: 02 7.9 Airbrake system The airbrakes are actuated by the blue handle on the left-hand side of the cockpit (Figure 7.8.0-1). Figure 7.8.0-1 The airbrakes are operated in the conventional manner: • Pull the handle backwards to open the airbrakes. Figure 7.8.0- 2 illustrates the cockpit label for the open airbrake position.
  • Page 118 MD01-AFM-00-001 JS-MD 1C Aircraft Flight Manual Issue: 02 The airbrakes are locked by moving the airbrake handle fully forward, over the over-centre lock. A force of approximately 15 to 20 kg is required to lock the airbrakes. The last 20 % of rearward movement actuates the wheel brake. Do not land with the airbrake handle pulled fully open to the rear stop, as this will lock the main wheel.
  • Page 119: Baggage Compartment

    MD01-AFM-00-001 JS-MD 1C Aircraft Flight Manual Issue: 02 7.10 Baggage Compartment The maximum weight of items in the baggage compartment is 1 kg. This should only be used for soft items that will not injure the pilot in the event of a hard or crash landing.
  • Page 120: Water Ballast System

    MD01-AFM-00-001 JS-MD 1C Aircraft Flight Manual Issue: 02 7.11 Water ballast system General The water ballast system allows the weight of the sailplane to be increased to a maximum of 600 kg (1323 lbs) in the 18 m configuration and to 720 kg (1587 lbs) in the 21 m configuration. The water tanks are integral type to the wings.
  • Page 121 MD01-AFM-00-001 JS-MD 1C Aircraft Flight Manual Issue: 02 Main tanks The main tanks are integral in the main wings. The dump valves are situated in the lower wing skin, approximately 400mm from the fuselage. The filling holes are positioned on the top of the inboard wing section near the tip.
  • Page 122: Electrical System

    MD01-AFM-00-001 JS-MD 1C Aircraft Flight Manual Issue: 02 7.12 Electrical system System description The electrical power of the aircraft is supplied by maintenance-free dry- gel type 12 volt batteries. There are two main batteries fitted in the luggage compartment and (as an optional addition) a backup battery in the fin.
  • Page 123 MD01-AFM-00-001 JS-MD 1C Aircraft Flight Manual Issue: 02 Recommended battery types The batteries used in the sailplane must be of the dry sealed type as no battery that vents any gas is allowed in the sailplane according the airworthiness requirements of CS-22. Main batteries: 12 V 7 Ah / 9 Ah Sealed Lead Acid battery, Dimensions: 151 mm x 65 mm x 93 mm...
  • Page 124 MD01-AFM-00-001 JS-MD 1C Aircraft Flight Manual Issue: 02 Rev. 00 Rev. Date: 14.09.2017 Page 7-22...
  • Page 125: Miscellaneous Equipment

    MD01-AFM-00-001 JS-MD 1C Aircraft Flight Manual Issue: 02 7.13 Miscellaneous equipment Trim weights Provision can be made for trim weights to be fitted in the nose of the sailplane adjacent to the nose release hook bulkhead as indicated in Figure 7.12.1-1. The nose ballast can be made up with combinations of two 2 kg weight plates and one 7 kg weight plate.
  • Page 126 MD01-AFM-00-001 JS-MD 1C Aircraft Flight Manual Issue: 02 Refer to Placards (under Limitations) for details on the placard for nose weights. Installation of the 7 kg weight plate: 1. Remove all locking pins from the assembly 2. Slide the assembly backward 3.
  • Page 127 MD01-AFM-00-001 JS-MD 1C Aircraft Flight Manual Issue: 02 Removal of the 2 kg weight plates: 1. Remove the bottom locking pin 2. Remove the top locking nut 3. Remove the weights by lifting the weights one by one from the slider.
  • Page 128 MD01-AFM-00-001 JS-MD 1C Aircraft Flight Manual Issue: 02 Bug wiper system If the bug wiper system is installed, perform the following checks before each flight: • Check the operation of the bug wiper winding system. Ensure the wipers are set to wipe not closer than 500 mm from the winglet.
  • Page 129 MD01-AFM-00-001 JS-MD 1C Aircraft Flight Manual Issue: 02 Strobe Light An optional strobe light is recessed into the leading edge of the fin below the Pitot static and TE probes. The height of the strobe light is such that the sailplane fuselage does not obscure the light to other pilots, without blinding or distracting the sailplane’s pilot.
  • Page 130 MD01-AFM-00-001 JS-MD 1C Aircraft Flight Manual Issue: 02 Intentionally left blank Rev. 00 Rev. Date: 14.09.2017 Page 7-28...
  • Page 131: Handling And Maintenance

    MD01-AFM-00-001 JS-MD 1C Aircraft Flight Manual Issue: 02 8. Handling and maintenance Certain inspections and maintenance procedures to maintain aircraft performance and reliability are included in this Section. It is advisable to follow a regular schedule of lubrication and preventive maintenance, consistent with the usage, climatic and flying conditions encountered.
  • Page 132: Aircraft Inspection Periods

    MD01-AFM-00-001 JS-MD 1C Aircraft Flight Manual Issue: 02 8.1 Aircraft inspection periods The aircraft shall be subjected to an annual airworthiness inspection. A more detailed inspection schedule can be found in the MD01-AMM-00- 001 JS-MD 1C Aircraft Maintenance Manual. • Airworthiness inspections must be performed in accordance with the relevant laws of the country in which the aircraft is registered •...
  • Page 133: Ground Handling

    MD01-AFM-00-001 JS-MD 1C Aircraft Flight Manual Issue: 02 8.2 Ground handling Ground towing Either use a rope or other non-metallic cable from the nose hook with someone walking with the wing tip, or Use a tow bar connected to the tail dolly and a ‘wing walker’ with a sprung wheel (or someone walking with the wingtip).
  • Page 134 MD01-AFM-00-001 JS-MD 1C Aircraft Flight Manual Issue: 02 Tie down The sailplane can be tied down using the holes in the wingtip skids. It is preferable to position wing stands under the wings inboard of the tip junction adjacent to the tie down ropes. A tie down rope across the rear fuselage boom in front of the fin should also be used to prevent the tail from lifting.
  • Page 135: Cleaning And Care

    MD01-AFM-00-001 JS-MD 1C Aircraft Flight Manual Issue: 02 8.3 Cleaning and care General The JS-MD 1C is made of composite of glass, carbon and aramid fibres in an epoxy matrix. The gel coat surface layer is finished with a polyurethane acrylic 2K paint topcoat. There is no composite material available that is impervious to moisture absorption or to UV (ultra-violet) rays.
  • Page 136 MD01-AFM-00-001 JS-MD 1C Aircraft Flight Manual Issue: 02 Paint and gel coat The purpose of the outer surface finish is to present a good aerodynamic surface to the air when flying, but also to protect the structure from the environment. The main enemy for the structure is UV rays and moisture.
  • Page 137 MD01-AFM-00-001 JS-MD 1C Aircraft Flight Manual Issue: 02 Canopy The canopy must be protected from scratches. Always wash off dust by using liberal amounts of water with a soft chamois, taking care not to let dust get between the chamois and the canopy surface. Dry with a clean chamois.
  • Page 138 MD01-AFM-00-001 JS-MD 1C Aircraft Flight Manual Issue: 02 Seat belt harness The seat belt harness must be checked regularly for frayed of edges, mildew and wear. The Fittings and buckles must be checked regularly for corrosion and proper functioning. Also refer to seat belt harness manufacturers maintenance instructions.
  • Page 139: Long-Term Storage

    MD01-AFM-00-001 JS-MD 1C Aircraft Flight Manual Issue: 02 8.4 Long-term storage To store the aircraft for long periods, the following is recommended: Remove instruments and store separately Close external pressure ports and inner tube end Protect all metal parts using acid less spray oil or non- corrosive grease (Vaseline) Close all orifices without preventing air circulation using wire cloth or similar means to prevent small animals from entering.
  • Page 140 MD01-AFM-00-001 JS-MD 1C Aircraft Flight Manual Issue: 02 Intentionally left blank Rev. 00 Rev. Date: 14.09.2017 Page 8-10...
  • Page 141: Supplements

    MD01-AFM-00-001 JS-MD 1C Aircraft Flight Manual Issue: 02 9. Supplements 9.1 Introduction This section includes additional information on the safe operation of the aircraft if fitted with ancillary equipment not included as standard in the aircraft. 9.2 List of ancillary equipment Oxygen system Provision is made for an oxygen bottle with a maximum diameter of 86 mm (3.4”).
  • Page 142 MD01-AFM-00-001 JS-MD 1C Aircraft Flight Manual Issue: 02 Intentionally left blank Rev. 00 Rev. Date: 14.09.2017 Page 9-2...
  • Page 143: Service Bulletins

    MD01-AFM-00-001 JS-MD 1C Aircraft Flight Manual Issue: 02 10. Service Bulletins This section starts with an overview table of all optional SBs, in which the owner or operator should mark which SBs he voluntary implemented and which not. All implemented optional SBs have to be printed and added to this section by the owner or operator.
  • Page 144 MD01-AFM-00-001 JS-MD 1C Aircraft Flight Manual Issue: 02 Intentionally left blank Rev. 00 Rev. Date: 14.09.2017 Page 10-2...
  • Page 145: Stcs And Minor Change Approvals

    MD01-AFM-00-001 JS-MD 1C Aircraft Flight Manual Issue: 02 11. STCs and Minor Change Approvals Reference No. Rev. Date Description Rev. 00 Rev. Date: 14.09.2017 Page 11-1...

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