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Pilot's Operating Handbook
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Applicable to:
Serial Number:
Registration:
Version 1.27 – August 2004
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ARZ01
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DFE Ultralights Ascender III-C
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Summary of Contents for DFE Ultralights Ascender III-C 2001

  • Page 1 ’ ’ Applicable to: Serial Number: ARZ01 Registration: C-IZZZ Version 1.27 – August 2004 Pilot’s Operating Handbook DFE Ultralights Ascender III-C...
  • Page 2 FOREWORD This handbook describes the features and systems of the DFE Ultralights Ascender III-C ultralight airplane. Operational procedures and performance data are provided so that the aircraft can be operated as safely as possible. It is strongly recommended that the pilot be familiar with the aircraft and this handbook prior to flight.
  • Page 3 DFE Ascender III-C General Arrangement Photos Pilot’s Operating Handbook DFE Ultralights Ascender III-C...
  • Page 4: Table Of Contents

    UNUSUAL FLIGHT CONDITIONS SEVERE TURBULENCE STALLS SPINS STRUCTURAL FAILURE OR MID-AIR COLLISION SECTION NORMAL OPERATING PROCEDURES GENERAL PREFLIGHT BRIEFING LIST OF WINGNUTS AND SAFETY RINGS PREFLIGHT INSPECTION BEFORE STARTING STARTING TAXI BEFORE TAKEOFF TAKEOFF-NORMAL Pilot’s Operating Handbook DFE Ultralights Ascender III-C...
  • Page 5 SAMPLE LOADING PROBLEM LOADING GRAPH SECTION AIRCRAFT & SYSTEMS DESCRIPTION GENERAL AIRCRAFT FILE AIRFRAME STRUCTURE MODIFICATIONS ENGINE FLIGHT CONTROLS LANDING GEAR ELECTRICAL SYSTEM FUEL SYSTEM HEATING AND VENTILATION FLIGHT INSTRUMENTS AVIONICS CABIN FEATURES Pilot’s Operating Handbook DFE Ultralights Ascender III-C...
  • Page 6 Ultralights and by operational test data collected. Changes to the Handbook will be published as a new version number. The Handbook should not be used for operational purposes unless it is the current version. Pilot’s Operating Handbook DFE Ultralights Ascender III-C...
  • Page 7: Flight Operations

    4) CAR 605.117 Restraint System Requirements. CAR 602.29(1)(f)(ii) [now in effect] and CAR 603.78(6)(b) require that all persons flying a Basic Ultralight Aircraft wear a protective helmet Eye protection is required while flying this aircraft. Pilot’s Operating Handbook DFE Ultralights Ascender III-C...
  • Page 8: Powerplant Limitations

    Maximum 6 psi Minimum 3 psi Engine start and operating outside air temperature Maximum Minimum Never fly aircraft equipped with this engine at locations, airspeeds, altitudes, or other circumstances from which a successful Pilot’s Operating Handbook DFE Ultralights Ascender III-C...
  • Page 9: Airspeed Limitations

    Fly in this aircraft at your own risk.” And in the area designated for the carriage of another person: “Passenger Warning: unless authorized, the carriage of passengers is prohibited” Pilot’s Operating Handbook DFE Ultralights Ascender III-C...
  • Page 10: Section Ii Emergency Procedures

    Inspect aircraft thoroughly for damage and cause prior to restart If fire persists or is not limited to intake or exhaust system: Throttle - IDLE Ignition Switches - OFF Exit Aircraft Direct fire extinguisher at engine Pilot’s Operating Handbook DFE Ultralights Ascender III-C...
  • Page 11: Engine Fire In Flight

    Land as soon as practical using "Precautionary Landing Approach" procedures Carburetor icing is indicated if a gradual RPM loss is noticed. The Rotax 503 is generally resistant to carburetor ice so there is no in-flight rectification for this problem. Pilot’s Operating Handbook DFE Ultralights Ascender III-C...
  • Page 12: Landing Emergencies

    Contact the water with nose high attitude DO NOT STALL prior to touchdown After coming to complete stop - EXIT AIRCRAFT The aircraft cannot be depended on to provide floatation after contacting the water. Pilot’s Operating Handbook DFE Ultralights Ascender III-C...
  • Page 13: Unusual Flight Conditions

    In the event of a structural failure or mid-air collision the BRS parachute recovery system should be deployed. Proceed as follows: Throttle – CLOSED Ignition switches – OFF Propeller – STOPPED (if altitude permits) BRS handle – PULL Parachute – CHECK OPEN Prepare for vertical landing Pilot’s Operating Handbook DFE Ultralights Ascender III-C...
  • Page 14: Section Iii Normal Operating Procedures

    LIST OF WINGNUTS AND SAFETY RINGS This is a complete list of wingnuts and safety rings installed on the aircraft. It is also incorporated in the preflight inspection. There are 29 wingnuts with safety rings Pilot’s Operating Handbook DFE Ultralights Ascender III-C...
  • Page 15 9. Winglet mounting right clevis pin 10. Winglet lateral brace left top clevis pin 11. Winglet lateral brace left bottom clevis pin 12. Winglet longitudinal brace left top clevis pin 13. Winglet longitudinal brace left bottom clevis pin Pilot’s Operating Handbook DFE Ultralights Ascender III-C...
  • Page 16: Preflight Inspection

    Control stick cross tube left clevis pin - CHECK condition, security r) Control stick cross tube right clevis pin - CHECK condition, security s) Canard pushrod/control stick wingnut - CHECK condition, security Pilot’s Operating Handbook DFE Ultralights Ascender III-C...
  • Page 17 Tip rib right rear wingnut - CHECK condition, security t) Front and Rear Wing Spars - INSPECT for straightness, dents and other damage u) Dacron wing covering - CHECK for condition, security Pilot’s Operating Handbook DFE Ultralights Ascender III-C...
  • Page 18 Engine mount forward brace left wingnut - CHECK condition, security dd) Engine mount rear left wingnut - CHECK condition, security ee) Engine mount front left wingnut - CHECK condition, security Left Main Gear Pilot’s Operating Handbook DFE Ultralights Ascender III-C...
  • Page 19 Canard pushrod front end clevis pin - CHECK condition, security j) Canard Elevator - CHECK condition, security and freedom of movement k) Canard Elevator Push Rod – CHECK freedom of movement and security Pilot’s Operating Handbook DFE Ultralights Ascender III-C...
  • Page 20: Before Starting

    To clear an engine that has been flooded due to excessive priming, proceed as follows: 1) Throttle - FULL OPEN 2) Choke - OFF 3) Ignition Switches - OFF 4) Starter - ENGAGE for several propeller revolutions 5) Repeat normal starting procedures using no prime Pilot’s Operating Handbook DFE Ultralights Ascender III-C...
  • Page 21: Taxi

    During an obstacle takeoff, use the normal takeoff procedures with the following exceptions: Lift-Off - 30 MPH Climb - 35 MPH (best angle of climb, for prolonged climb to obstacle) TAKEOFF ON SOFT FIELD Pilot’s Operating Handbook DFE Ultralights Ascender III-C...
  • Page 22 C of G which results in a mild increase in pitch attitude when power is reduced. The effect is easily controllable and results in a loss of about 4 mph in airspeed when power is reduced from cruise to descent settings. Pilots should be Pilot’s Operating Handbook DFE Ultralights Ascender III-C...
  • Page 23 2) Radio, Intercom, GPS - OFF 3) Choke - ACTIVATE momentarily 4) Ignition switches - OFF 5) Propeller - STOPPED 6) Controls - SECURE 7) Wheels - CHOCKED 8) Wing/Nose boom Tie Downs - SECURE Pilot’s Operating Handbook DFE Ultralights Ascender III-C...
  • Page 24 If high winds are anticipated, the aircraft should be hangared or folded up. If the aircraft must be left outside, park into the wind and use tie-downs for security. Secure the canard elevator and tip rudders against movement. Pilot’s Operating Handbook DFE Ultralights Ascender III-C...
  • Page 25 The DFE Ascender main wing does not usually stall in 1 “g” flight when flown dual as the canard elevator stalls first. The minimum controllable airspeed is 32 MPH IAS. TAKEOFF PERFORMANCE Density Altitude Distance 1000 feet 240 feet CLIMB PERFORMANCE Density Altitude Rate of Climb 1000 feet 1000 fpm Pilot’s Operating Handbook DFE Ultralights Ascender III-C...
  • Page 26 % Power Torque (ft.lb) % Torque 3000 3250 3500 3750 4000 4250 4500 4750 5000 5250 5500 5750 100% 6000 100% 6250 100% 6500 100% LANDING PERFORMANCE Density Altitude Distance 1000 feet 240 feet Pilot’s Operating Handbook DFE Ultralights Ascender III-C...
  • Page 27 C of G range Maximum Rearward 98.0 inches Maximum Forward 95.6 inches Cruise Speed C of G 35 MPH 98.0 inches 40 MPH 97.6 inches 45 MPH 97.0 inches 50 MPH 96.3 inches 55 MPH 95.6 inches Pilot’s Operating Handbook DFE Ultralights Ascender III-C...
  • Page 28 Add the "Aircraft Empty Weight and Moment" and all the items in Step 3 to determine the "Gross Takeoff Weight and Moment". Divide the Moment by the weight to determine the Centre of Gravity (C of G). Pilot’s Operating Handbook DFE Ultralights Ascender III-C...
  • Page 29 Ballast wt forward 59.0 Ballast wt aft 17.5 107.0 1872.5 Aircraft Weight C of G Trim Speed Totals take-off fuel 97.5 67522.0 Totals no fuel 96.7 61744.0 Amount below gross 57.5lbs at take-off Pilot’s Operating Handbook DFE Ultralights Ascender III-C...
  • Page 30 4.55 Winglet height inches Winglet chord inches Winglet Sweep Angle degrees inches Wheel base Wheel track inches inches Crew elbow room Power loading lb/hp 15.00 Wing aspect ratio 5.80 Canard aspect ratio Pilot’s Operating Handbook DFE Ultralights Ascender III-C...
  • Page 31 These items must be available in the aircraft. Aircraft Registration Proof of Insurance These items need not be carried in the aircraft, but should be available. Weight and Balance Sheet Journey Logbook Technical Record Pilot’s Operating Handbook Pilot’s Operating Handbook DFE Ultralights Ascender III-C...
  • Page 32 The canard elevator is 6061 T6 aluminum covered in clear Mylar material. MODIFICATIONS List of Specific Changes to DFE Ultralights Ascender III-C C-IZZZ S/N ARZ01 compared to the DFE Builder’s Manual: Ignition Switches – The plastic, throttle mounted P123-360 Ignition Toggle Switch was replaced with two AN3021-2 Switches with two MS25224-1 Switch Guards from Aircraft Spruce &...
  • Page 33 The Press-to-Test switch will only check the battery pack and light serviceability and does not confirm the operation of the float switch inside the tank. The system is powered by two “AA” batteries providing 3v DC. Pilot’s Operating Handbook DFE Ultralights Ascender III-C...
  • Page 34 The electrical hour meter (Hobbs meter) indicates the actual running time of the engine and is activated by the engine lighting coil current. Pilot’s Operating Handbook DFE Ultralights Ascender III-C...
  • Page 35 The pilot’s feet on the ground to prevent forward movement of the aircraft provides a “parking brake” function. The technique of using the pilot’s feet for brakes while the aircraft is moving is not recommended while the aircraft propeller is turning as rocks may be Pilot’s Operating Handbook DFE Ultralights Ascender III-C...
  • Page 36 An engine plunger-type fuel primer is located on the fuel line behind the pilot’s seat to facilitate starting. HEATING AND VENTILATION There are no provisions for cockpit heating and therefore flying clothing appropriate to the season and altitude is imperative. Flying in temperatures below 10 C is not recommended. Pilot’s Operating Handbook DFE Ultralights Ascender III-C...
  • Page 37 9v DC battery. A Magellan 310 GPS is mounted on a RAM mount on the left hang cage tube to aid navigation. The GPS is powered by two “AA” batteries providing 3v DC. An emergency locator transmitter (ELT) is not required and is not fitted. Pilot’s Operating Handbook DFE Ultralights Ascender III-C...
  • Page 38 Dacron fabric. No fire extinguisher is required or installed. No first aid kit is required but one may be carried in one of the stowage areas. Pilot’s Operating Handbook DFE Ultralights Ascender III-C...
  • Page 39 This section describes ground handling, routine servicing, cleaning and storage procedures. No information is provided for making mechanical adjustments, repairs or replacement of components. Consult the DFE Ultralights and Rotax service manuals for details. The aircraft is subject to regular maintenance as described in the aircraft maintenance schedule in the Technical Record.
  • Page 40 3) Install control surface locks for the tips rudders and canard elevator. 4) Install pitot tube cover Note that tie-down stakes can be pre-positioned for the aircraft in the following pattern, speeding tying down: Pilot’s Operating Handbook DFE Ultralights Ascender III-C...
  • Page 41 Do not overfill the gearbox or venting will occur. A drain plug is also fitted. Pilot’s Operating Handbook DFE Ultralights Ascender III-C...
  • Page 42 To insure long engine life, the aircraft should be flown at least once a month to reduce excessive moisture buildup. Excessive ground running to bring engine to operating temperature is not recommended. Consult the engine manual for further recommendations if this is not possible. Pilot’s Operating Handbook DFE Ultralights Ascender III-C...
  • Page 43 - CHECK normal indications 9) Throttle – IDLE - 2000 RPM 10) Seat Belts/Shoulder Harness - FASTENED 11) BRS Safety Pin - REMOVED and stowed AFTER LANDING 1) BRS Safety Pin - REPLACED SHUTDOWN Pilot’s Operating Handbook DFE Ultralights Ascender III-C...
  • Page 44 3) Choke - ACTIVATE momentarily 4) Ignition switches - OFF 5) Propeller - STOPPED 6) Controls - SECURE 7) Wheels - CHOCKED 8) Wing/Nose boom Tie Downs - SECURE 9) Engine bungs - INSTALL Pilot’s Operating Handbook DFE Ultralights Ascender III-C...

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