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Sportine Aviacija LAK-17B FES mini Flight Manual

Powered sailplane with front electric system
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Pociūnų km., Ašmintos sen., LT-59327, Prienai, Republic of Lithuania
tel.: +370 319 60567 ● fax:+370 319 60568 ● e-mail: info@lak.lt ● www.lak.lt
Type:
Model:
Variant:
Serial Number:
Registration:
Date of Issue:
It is a preliminary manual. The sailplane is not certified and has not shown
compliance with airworthiness requirements.
Limitations in "Pilot instruction 17B FES mini-PI-01-00; date: 2019 05 15" are
mandatory until the sailplane is certified.
This sailplane is to be operated in compliance with the regulatory information and
This Manual should always be kept on board of the sailplane
Joint Stock Company "SPORTINĖ AVIACIJA ir Ko"
FLIGHT MANUAL
LAK-17B FES mini
Powered Sailplane
with Front Electric System
Issue No. 1
limitations contained herein.
LAK-17
LAK-17B FES
LAK-17B FES mini
_______________
_______________
_______________

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Summary of Contents for Sportine Aviacija LAK-17B FES mini

  • Page 1 Joint Stock Company "SPORTINĖ AVIACIJA ir Ko" Pociūnų km., Ašmintos sen., LT-59327, Prienai, Republic of Lithuania tel.: +370 319 60567 ● fax:+370 319 60568 ● e-mail: info@lak.lt ● www.lak.lt FLIGHT MANUAL LAK-17B FES mini Powered Sailplane with Front Electric System Issue No. 1...
  • Page 3 LAK-17B FES mini Flight Manual Chapter 0 Record of revisions Any revision of the present manual, except actual weighing data, must be recorded in the following table and in the case of approved Chapters, endorsed by the responsible airworthiness authority.
  • Page 4 LAK-17B FES mini Flight Manual Intentionally left blank Issue 1 Date: 6 January 2020 Page ii Rev. 1...
  • Page 5 LAK-17B FES mini Flight Manual List of effective pages Chapter Page Date of Issue Chapter Page Date of Issue 10 Dec 2018 10 Dec 2018 10 Dec 2018 10 Dec 2018 10 Dec 2018 10 Dec 2018 10 Dec 2018...
  • Page 6 LAK-17B FES mini Flight Manual Continued Chapter Page Date of Issue Chapter Page Date of Issue 24 May 2019 24 May 2019 4-10 24 May 2019 24 May 2019 4-11 24 May 2019 24 May 2019 4-12 24 May 2019...
  • Page 7 LAK-17B FES mini Flight Manual Table of contents Chapter GENERAL (a non-approved chapter).............1 LIMITATIONS (an approved chapter)............2 EMERGENCY PROCEDURES (an approved chapter).......3 NORMAL PROCEDURES (an approved chapter)........4 PERFORMANCE (a partly approved chapter)..........5 WEIGHT AND BALANCE / EQUIPMENT LIST (a non-approved chapter)..................6 SAILPLANE AND SYSTEMS DESCRIPTION (a non-approved chapter)..................7...
  • Page 8 LAK-17B FES mini Flight Manual Intentionally left blank Issue 1 Date: 6 January 2020 Page vi Rev. 1...

  • Page 9: Table Of Contents

    LAK-17B FES mini Flight Manual Chapter 1 GENERAL Table of Contents 1.1 Introduction....................1 - 2 1.2 Certification basis...................1 - 2 1.3 Warnings, cautions and notes.................1 - 2 1.4 Descriptive data....................1 - 3 1.5 Three-view drawing..................1 - 6 1.6 Abbreviations....................1 - 7 1.7 Unit conversion....................1 - 7...

  • Page 10: Introduction

    Introduction The sailplane flight manual has been prepared to provide pilots and instructors with information for the safe and efficient operation of the LAK-17B FES mini sailplane with Front Electric System. This manual includes the material required to be furnished to the pilot by CS-22. It also contains supplemental data supplied by the sailplane manufacturer.

  • Page 11: Descriptive Data

    82 (optionally 134) liters [21.6 (optionally 35.4) US gal] water ballast. Sailplane is equipped with Front Electric System. LAK-17B FES mini is a powered sailplane. It is approved for take-off by sole means of its own power.
  • Page 12 Both towing hooks are operated by the same handle. The wings incorporate fork-type spar tips, joined with two pins. The T-tail (fixed stabilizer with elevator) of the LAK-17B FES mini provides stable and responsive pitch characteristics. The elevator hooks up automatically during assembly.
  • Page 13 LAK-17B FES mini Flight Manual Table 1.4-2 Wing span 13.5 m (44.29 ft) Fuselage length 6.53 m (21.42 ft) Height 1.32 m (4.33 ft) Max gross weight 350 kg (771.6 lbs) Mean aerodynamic chord 0.638 m (25.12 in) Wing area 8.41 m...

  • Page 14: Three-View Drawing

    LAK-17B FES mini Flight Manual Three-view drawing Issue 1 Date: 10 December 2018 Page 1-6 Rev. 0...

  • Page 15: Abbreviations

    LAK-17B FES mini Flight Manual Abbreviations calibrated airspeed means indicated airspeed of a sailplane, corrected for position (due to position of pressure ports on sailplane) and instrument error. Calibrated airspeed is equal to true airspeed in standard atmosphere at sea level C.G.
  • Page 16 LAK-17B FES mini Flight Manual Intentionally left blank Issue 1 Date: 10 December 2018 Page 1-8 Rev. 0...
  • Page 17 LAK-17B FES mini Flight Manual Chapter 2 LIMITATIONS Table of Contents 2.1 Introduction....................2 - 2 2.2 Airspeed......................2 - 2 2.3 Airspeed indicator markings................2 - 4 2.4 Power-plant information and operation limitations........2 - 5 2.4.1 Power-plant....................2 - 5 2.4.2 Battery packs..................2 - 6 2.5 Mass (weight)....................2 - 6...

  • Page 18: Introduction

    Flight Manual Introduction Chapter 2 includes operation limitations, instrument markings and placards necessary for safe operation of the LAK-17B FES mini powered sailplane, its motor, standard systems and standard equipment. The limitations have been approved. Compliance with these limitations is mandatory.
  • Page 19 LAK-17B FES mini Flight Manual IAS [km/h / (kts)] Speed Remarks 13.5 m Do not make full or abrupt control movement above this speed, because under Maneuvering speed 170 (92) certain conditions the sailplane may be over stressed by full control...

  • Page 20: Airspeed Indicator Markings

    LAK-17B FES mini Flight Manual Select your engine start/stop speed in flight correctly: flaps must be at +2 position; • *Warning make sure your selected speed for motor start / stop is at • least 8...10 km/h (4...5 kts) higher than stall speed for your configuration.

  • Page 21: Power-Plant Information And Operation Limitations

    Flight Manual Power-plant information and operation limitations LAK-17B FES mini is a powered sailplane equipped with Front Electric System. Therefore use of the power-plant has some limitations which need to be observed: Start engine in flight only at the speed range V = 80 ...

  • Page 22: Battery Packs

    2.4.2 Battery packs LAK-17B FES mini has two Battery packs wired in serial. Each battery pack has 14 cells, so altogether 28 cells. Nominal capacity of each cell is 40 Ah, at middle voltage 3.7 V (minimum 3.2 V / maximum 4.2 V).

  • Page 23: Center Of Gravity

    = 170 km/h (92 kts), flaps +1, +2, L +4 / 0 Flight crew LAK-17B FES mini is a single seat glider. Load in a pilot seat must be as follows: Max load in the seat: 110 kg (242 lbs);...

  • Page 24: Kinds Of Operation

    LAK-17B FES mini Flight Manual With removed motor and FES batteries lead ballast m=3 kg Caution must be added in the fin. 2.10 Kinds of operation Flights must be conducted under Day / VFR conditions. Cloud flying is not permitted.

  • Page 25: Aero Tow, Winch And Auto Tow Launching

    LAK-17B FES mini Flight Manual power meter; • motor temperature indicator; • Bat1, Bat2 temperature indicator; • RPM; • alarm messenger together with alarm sound. • outside air temperature (OAT) gauge (if water ballast is carried); • emergency locator transmitter (ELT) (if required by national regulations);...

  • Page 26: 2.13.2 Water Ballast

    2.14 Limitation placards The following limitation placards are installed in a glider: Air speed data and loading placard in a cockpit: • LAK-17B FES mini – AIR SPEED DATA & LOADING PLACARD Speed IAS: km/h Masses and loads Never exceed Max mass with/without water ballast 771.6...
  • Page 27 LAK-17B FES mini Flight Manual High altitude flights V limitations – on a right-side canopy rail, for the pilot • in flight visible place: m – Altitude – ft km/h – V , IAS – kts 4000 13100 5000 16400...
  • Page 28 LAK-17B FES mini Flight Manual Intentionally left blank Issue 1 Date: 24 May 2019 Page 2-12 Rev. 0 Appr.
  • Page 29 LAK-17B FES mini Flight Manual Chapter 3 EMERGENCY PROCEDURES Table of Contents 3.1 Introduction....................3 - 2 3.2 Canopy jettison....................3 - 2 3.3 Bailing out......................3 - 2 3.4 Stall recovery....................3 - 3 3.5 Spin recovery....................3 - 3 3.6 Spiral dive recovery..................3 - 3 3.7 Motor failure....................3 - 3...

  • Page 30: Introduction

    LAK-17B FES mini Flight Manual Introduction Chapter 3 provides a checklist and explanations for coping with emergencies that may occur. Emergency situations can be minimized by proper pre-flight inspections and maintenance. Canopy jettison The following steps accomplish canopy jettison: 1. Pull the red canopy jettison handle aft to the limit of its travel;...

  • Page 31: Stall Recovery

    LAK-17B FES mini Flight Manual If you have to bail out with the engine running, stop engine, if there is time enough to do so, as follows: Warning By rotation the Rotary encoder button counter clockwise • stop the propeller.

  • Page 32: Power Loss During Flight

    LAK-17B FES mini Flight Manual In a case of motor failure during running motor, try to stop the propeller from windmilling phase with electronic brake. If successful, propeller will fold to fuselage contour automatically. In case that you are not able to stop propeller you will need to land with the propeller in wind milling phase.

  • Page 33: Fire

    LAK-17B FES mini Flight Manual after propeller is stopped, switch OFF Power switch and keep FCU ON. • In case that you are not able to stop propeller, you will need to land with the propeller in wind milling phase. In such situation try to land carefully on 2 points, to avoid possible damage of the propeller.

  • Page 34: Fire In The Fuselage

    LAK-17B FES mini Flight Manual switch OFF the “Power switch”; • open front ventilation (if not already opened); • open canopy side window; • land as soon as possible (or bail out if appropriate); • extinguish fire after landing. •...

  • Page 35: Loss Of Electrical Power In Flight

    LAK-17B FES mini Flight Manual Loss of electrical power in flight With the engine stopped: Continue flying as a sailplane. • With the engine running: Try to stop the propeller from windmilling phase with electronic brake. If • successful, propeller will fold to fuselage contour automatically.

  • Page 36: Emergency Wheel Up Landing

    LAK-17B FES mini Flight Manual 3.13 Emergency wheel up landing An emergency wheel up landing is not recommended since the absorption capability of the fuselage is much smaller than that of the landing gear. If the landing gear cannot be extended the landing touchdown should be at slow speed.
  • Page 37 LAK-17B FES mini Flight Manual Chapter 4 NORMAL PROCEDURES Table of Contents 4.1 Introduction....................4 - 2 4.2 Rigging and de-rigging, filling the water tanks, charging, battery pack installation......................4 - 2 4.2.1 Rigging and de-rigging................4 - 2 4.2.2 Filling the water tanks................4 - 4 4.2.3 FES batteries charging................4 - 4...

  • Page 38: Introduction

    LAK-17B FES mini Flight Manual Introduction This chapter provides checklists and explanations of procedures for conducting normal operating procedures. Normal procedures associated with optional equipment can be found in Chapter 9. Rigging and de-rigging, filling the water tanks, charging, battery pack installation 4.2.1...
  • Page 39 LAK-17B FES mini Flight Manual brake properly engage. Look to see if the water ballast control is engaging correctly. Line up the main pin bushings. Insert both spar pins fully. Lock the main wing pin handles. Warning Lock the main wing pin handles with fixing studs.

  • Page 40: Filling The Water Tanks

    LAK-17B FES mini Flight Manual 4.2.2 Filling the water tanks If water ballast is necessary, fill each wing tank according to the loading chart (see Chapter 6) and confirm symmetrical loading by balancing at the wing tip. Wing ballast is filled through the hole on the top side of the wing. A light coating of waterproof grease applied to the dump valve seat will help insure the valve is leak free and opens smoothly.

  • Page 41: Fes Battery Packs Or The Dummy Boxes Installation

    LAK-17B FES mini Flight Manual 4.2.4 FES battery packs or the dummy boxes installation FES battery packs installation Make sure that both battery packs are fully charged before installation into sailplane. Both battery packs must have Warning approximately the same voltage level of each cell (close to 4.16 V per cell).

  • Page 42: Daily Inspections

    LAK-17B FES mini Flight Manual 3. Insert second box into the fuselage and slide it to the first one; 4. Place pair of fixation plates (the same as used for the FES batteries fixation) in the middle of the rear dummy box, above carrier strap and tighten fixation knob;...
  • Page 43 LAK-17B FES mini Flight Manual operation of cockpit ventilation, seat back adjustment; • operation of a trimmer; • batteries and oxygen bottle for condition, properly secured; • operation of flight instruments (especially pneumatic); • radio communication; • safety belts; •...

  • Page 44: Pre-Flight Inspection

    LAK-17B FES mini Flight Manual After a hard landing or if high loads have been experienced, a complete inspection according to the Maintenance Manual Caution Section 5.5 must be performed. Contact the manufacturer for assistance if required. Pre-flight inspection 1. Main spar pins installed and locked;...

  • Page 45: Normal Procedures And Recommended Speeds

    LAK-17B FES mini Flight Manual If powered flight is planned or expected: Perform FES ground test run as described below: 1. Remove propeller covers and a tail dolly; 2. Open battery compartment cover; 3. Check that Power switch is OFF;...

  • Page 46: Aero-Tow Launch

    LAK-17B FES mini Flight Manual 4.5.1 Aero-tow launch Before taking off adjust the flaps to the “-1” position. When the speed V = 50 km/h (27 kts) is reached or when it is felt that the ailerons have sufficient effectiveness, adjust the flaps to the “+2”...

  • Page 47: Free Flight

    LAK-17B FES mini Flight Manual When V = 90 km/h (49 kts) is reached slowly increase the angle and gain altitude at speed V = 110 ÷ 125 km/h (59 ÷ 67 kts). Do not decrease the speed up to V = 100 km/h (54 kts) because Caution the auto-release mechanism on the hook will function.

  • Page 48: Low Speed Flight And Stalling Behavior

    4.5.4 Low speed flight and stalling behavior The LAK-17B FES mini behaves normally in slow and stalled flight. With a forward C.G. position is a clear and distinct stall warning. The stall characteristics are very gentle and large aileron deflections can be applied without dropping the wing.

  • Page 49: Take-Off

    80 m (262 ft), increasing for circling flight. 4.5.5 Take-off LAK-17B FES mini is a powered sailplane. It is approved for take-off by sole means of its own power. Perform pre-flight inspection according to section 4.4. Check: Battery packs are connected;...

  • Page 50: Cruise With Running Motor

    • completely. 4.5.6 Cruise with running motor The motor of the LAK-17B FES mini can be used for long continuous cruise. Before engine operation open ventilation fully (ventilation lever must be pushed fully forward). Motor starting procedure during flight: 1. FCU instrument must be ON.
  • Page 51 LAK-17B FES mini Flight Manual The maximum range of the powered flight without water ballast is around 100 km depending on lift-sink conditions (62 miles). Put flaps on +1 and fly at speed 95 km/h (52 kts). Maximum altitude is about 1200 m (3940 feet) depending on lift-sink conditions.

  • Page 52: Approach And Landing

    LAK-17B FES mini Flight Manual After electronic braking stops motor, wait for 2-3 seconds, until RPM data shows zero RPM. After that, automatic positioning will start. You can always stop automatic positioning by pressing throttle knob. Positioning does not work if Canopy message is active, or if Note throttle is set to zero power instead of braking.
  • Page 53 LAK-17B FES mini Flight Manual After Landing Always remove connecting cable between the packs after Caution landing. Make sure that Power switch is OFF before removing Warning connecting cable. If motor was used during flight, take out both batteries and recharge those according detailed charging instructions in FES Battery pack manual, v1.19.

  • Page 54: Flight With Water Ballast

    LAK-17B FES mini Flight Manual Make sure you put battery packs on a dry and safe place. Read Caution FES Battery pack manual. Taking the dummy boxes out of sailplane: 1. Open cover; 2. Untighten battery packs/dummy boxes fixation knobs;...

  • Page 55: High Altitude Flights

    LAK-17B FES mini Flight Manual Filling and dumping the water ballast: After filling the ballast tanks, either full or with partial loads, the wings should be leveled and checked for symmetrical loading. Flight with leaking ballast valves is prohibited. Open ballast valves fully to dump water ballast.
  • Page 56 LAK-17B FES mini Flight Manual It is allowed to fly through light rain, with running motor if necessary. However use only lower RPM settings, suitable for horizontal flight, to avoid damaging propeller blades. Stop the motor if rain becomes stronger.
  • Page 57 LAK-17B FES mini Flight Manual Chapter 5 NORMAL PROCEDURES Table of Contents 5.1 Introduction....................5 - 2 5.2 Data approved by EASA................5 - 2 5.2.1 Airspeed indicator system calibration............5 - 2 5.2.2 Stall speeds....................5 - 3 5.3 Additional information...................5 - 3 5.3.1 Demonstrated crosswind components...........5 - 3...

  • Page 58: Introduction

    LAK-17B FES mini Flight Manual Introduction This Chapter provides EASA approved data for airspeed calibration, stall speeds and take-off performance and non-approved further information. The data in the charts have been computed from actual flight tests with the sailplane in good condition and using average piloting techniques.

  • Page 59: Stall Speeds

    LAK-17B FES mini Flight Manual TE tube – green. • 5.2.2 Stall speeds Stall speeds for different sailplane configurations are shown in Table 5.2-1. Table 5.2-1 Stall speed in level flight, km/h (kts) Flap position without water ballast and with...

  • Page 60: Flight Polar

    LAK-17B FES mini Flight Manual The polar apply to a clean aircraft, motor stopped. With dirty wings or flight in rain the performance drops accordingly. 5.3.3 Flight polar 5.3.4 Powered flight performance Take-off performance The required take-off field length to reach 15 m altitude is 475 m (200 m lift-off field length) on a smooth and hard surface at MSL.
  • Page 61 LAK-17B FES mini Flight Manual 2.5 m/s (492 ft./min) for maximum weight with or without water ballast. • Cruising flight The cruising speed is 95 km/h (52 kts) at around 4÷5kW. Max range is about 100 km, dependable on lift-sink conditions.
  • Page 62 LAK-17B FES mini Flight Manual Intentionally left blank Issue 1 Date: 24 May 2019 Page 5-6 Rev. 0 Appr.
  • Page 63 LAK-17B FES mini Flight Manual Chapter 6 WEIGHT AND BALANCE / EQUIPMENT LIST Table of Contents 6.1 Introduction....................6 - 2 6.2 Weighing procedures..................6 - 2 6.3 Weighing record.....................6 - 2 6.4 Empty weight and C.G...................6 - 3 6.5 Calculation of C.G. position................6 - 5 6.6 Weight of all non-lifting parts................6 - 7...

  • Page 64: Introduction

    Maintenance Manual. Weighing procedures The Weight and Balance Report for the LAK-17B FES mini must be calculated in accordance with the currently valid weighing data. The weighing must be established as shown in Figure 6.2-1.

  • Page 65: Empty Weight And C.g

    LAK-17B FES mini Flight Manual Empty weight and C.G. Approved in flight C.G. positions are shown in Table 6.4-1. Table 6.4-1 Parameter Approved limit, mm In flight: Foremost position of C.G. Rearmost position of C.G. Table 6.4-2 Weight and balance record...
  • Page 66 [kg] Date Signature Empty weight center of gravity of the LAK-17B FES mini is defined for the 13.5 m wing configuration, water ballast tanks empty, glider ready to fly, excluding weight of pilot and parachute. Due to flutter reasons it is not allowed to add additional masses Warning to the fin battery or the fin battery compartment.

  • Page 67: Calculation Of C.g. Position

    LAK-17B FES mini Flight Manual Removable ballast in the fin, used to supplement the weight of removed motor and FES batteries in order to keep C.G. position within limits, is fastened in fuselage fin on the rear wall. The 3.0 kg (6.6 lbs) of removable ballast equals a dm...
  • Page 68 LAK-17B FES mini Flight Manual – distance between glider component mass C.G. and wing root leading edge, mm; distance is negative if mass C.G. is ahead of the wing root leading edge; distance is positive if mass C.G. is behind of the wing root leading edge;...

  • Page 69: Weight Of All Non-Lifting Parts

    Weight of non-lifting parts of the sailplane includes weight of pilot, fuselage, stabilizer with elevator, rudder, instruments and equipment. Maximum weight of non-lifting parts of the LAK-17B FES mini is 277.4 kg (611.5 lbs). Issue 1 Date: 10 December 2018 Page 6-7 Rev.

  • Page 70: Maximum Weight

    The maximum approved take-off and landing weight is 350 kg (771.6 lbs). Useful loads The maximum useful load of the LAK-17B FES mini is equal to the maximum approved take-off and landing weight minus the empty weight of the aircraft plus the weight of any added water ballast.
  • Page 71 510 mm; Pilot with parachute weight: 80 kg; According to the graph “Sailplane LAK-17B FES mini empty center of gravity”, the empty weight C.G. is in permissible range. According to the “Water ballast loading table” – the max permissible wing water ballast weight is 50 kg.
  • Page 72 LAK-17B FES mini Flight Manual Intentionally left blank Issue 1 Date: 10 December 2018 Page 6-10 Rev. 0...
  • Page 73 LAK-17B FES mini Flight Manual Chapter 7 SAILPLANE AND SYSTEMS DESCRIPTION Table of Contents 7.1 Introduction....................7 - 2 7.2 Airframe construction..................7 - 2 7.3 Flight controls and trim..................7 - 4 7.4 Airbrakes and wheel brake................7 - 5 7.5 Flaps.......................7 - 5 7.6 Landing gear....................7 - 5...

  • Page 74: Introduction

    Airframe construction The LAK-17B FES mini is a single seat high performance sailplane with Front Electric System designed to meet CS-22 requirements. The wings are constructed with glass and carbon fiber reinforced plastic over a plastic foam core with carbon rod spar caps.
  • Page 75 LAK-17B FES mini Flight Manual 20. Fire warning system test button (fire warning system Option 2). 21. Wheel brake lever. Figure 7.2-1 Figure 7.2-2 Issue 1 Date: 24 May 2019 Page 7-3 Rev. 0...

  • Page 76: Flight Controls And Trim

    LAK-17B FES mini Flight Manual Figure 7.2-3 Flight controls and trim The ailerons and elevator are operated from the central control column (control stick). The trim adjustment control knob is located in the left armrest and controls the elevator trim select position.

  • Page 77: Airbrakes And Wheel Brake

    LAK-17B FES mini Flight Manual The rudder pedals control the rudder by a cable system and are adjusted using the gray knob located in the right armrest. Pull the knob to loosen the rudder pedal lock, make the adjustment, and release the knob to lock the rudder pedals in the desired position.

  • Page 78: Tow Release

    LAK-17B FES mini Flight Manual Tow release The tow release is the yellow control knob located at the left side wall of the cockpit. Pull this control knob to open the tow release and release the knob to allow the tow coupling to snap closed and lock.

  • Page 79: Cockpit Ventilation

    LAK-17B FES mini Flight Manual The sailplane has an independent control system for the fin tank valve - the water ballast valve control knob of the fin tank is located on the right side of the cockpit wall. To open the dump valve move the knob to the back and to close the dump valve move the knob forward.

  • Page 80: Miscellaneous Equipment

    LAK-17B FES mini Flight Manual An air leak will adversely affect airspeed indication and other Warning instruments. Make sure the probe is fully seated in the receptacle for proper operation. See Maintenance Manual Section 2. 7.15 Miscellaneous equipment 7.15.1 Oxygen system...

  • Page 81: Power Plant

    7.20 Motor controls The LAK-17B FES mini motor is controlled by the help of FCU (FES control unit) instrument. The FCU instrument was designed to control and improve safety of motor use. FCU instrument must be continuously switched ON when operating the motor.
  • Page 82 LAK-17B FES mini Flight Manual ON – OFF RED led SWITCH Alarms from THROTTLE /BRAKE/RESET RED led GREEN led Shows different Shows normal allarm operation of codes from controller controller Description Description of function Switch ON/OFF for FCU instrument Throttle, brake, reset...

  • Page 83: Fire Warning System

    LAK-17B FES mini Flight Manual More detailed functionality of FCU is described in separate FES FCU INSTRUMENT manual, v1.80 (for FCU software v3.06). 7.21 Fire warning system Sailplane is equipped with one of two options of battery compartment fire warning...
  • Page 84 LAK-17B FES mini Flight Manual Testing the fire warning system: 1. Make sure that the main battery (located in the fin) is connected; 2. Switch the “Main switch” to “ON” position; 3. The warning system works properly if the temperature indicator shows the batteries compartment’s inside temperature.

  • Page 85: Acl System

    (fire warning system Option 2). 7.22 ACL system The sailplane LAK-17B FES mini has the anti-collision lights (Further – ACL) system installed. For more detailed information about ACL systems components refer to sailplane's Maintenance Manual. System usage description The ACL system switch has 3 positions: Position "Upwards".
  • Page 86 LAK-17B FES mini Flight Manual Position "Downwards". Used for automatic mode. The ACL system starts • working only when instructed to do so by the FLARM system, which detects other aircraft in the air space and the possibility of collision occurs.
  • Page 87 LAK-17B FES mini Flight Manual Chapter 8 SAILPLANE HANDLING, CARE AND MAINTENANCE Table of Contents 8.1 Introduction....................8 - 2 8.2 Inspection periods and maintenance...............8 - 2 8.3 Alterations and repairs..................8 - 2 8.4 Tie down......................8 - 3 8.5 Sailplane trailer....................8 - 3 8.6 Ground handling.....................8 - 4...

  • Page 88: Introduction

    Also, at least once a year the control surface displacements and adjustments must be inspected to insure conformity with factory data. See the LAK-17B FES mini Maintenance Manual for additional information. The Instructions for Continued Airworthiness as provided in the FES Maintenance manual must be followed.

  • Page 89: Tie Down

    The recommended tie down points are the tow release, wing tips and fuselage tail just ahead of the vertical fin. The cockpit always must be closed and covered when tied down. The external surfaces of the LAK-17B FES mini are finished in Note durable epoxy paint, however long exposure to sun and humidity will lead to premature aging of any surface finish.

  • Page 90: Ground Handling

    LAK-17B FES mini Flight Manual Ground handling Ground towing should be accomplished using the tow release and standard double aero tow ring. Ground towing should also be accomplished with a tail dolly tow bar and wing tip wheel. Make sure that propeller is in horizontal position when lifting Caution rear part of fuselage to attach tail dolly.
  • Page 91 LAK-17B FES mini Flight Manual Chapter 9 SUPPLEMENTS There are no supplements Issue 1 Date: 10 December 2018 Page 9-1 Rev. 0...

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