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DG -500M Flight Manual

Motorglider
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DG Flugzeugbau GmbH
Im Schollengarten 20 • • • • D-76646 Bruchsal - Untergrombach • • • • Germany
Postbox 4120, D-76625 Bruchsal • • • • Germany
Phone 07257/8910 aircraft sales and service
Phone 07257/8911 spare part and material sales
Phone 07257/8960 repairservice
Phone 07257/89-0 switch board and management
Telefax 07257/8922 • • • • eMail: dg@dg-flugzeugbau.de • • • • Internet: www.dgflugzeugbau.de
Model:
German Data Sheet No.:
Factory Serial No.:
Registration No.:
Date of Issue:
Pages as indicated by "App." are approved by:
(Signature)
(Authority)
(Stamp)
(Original date of approval)
This motorglider is to be operated in compliance with information and
limitations contained herein. The original German Language edition of this
manual has been approved as operating instruction according to "Paragraph
12(1) 2. of Luft-Ger Po". Approval of translation has been done by best
knowledge and judgement.
F L I G H T M A N U A L
for the
M O T O R G L I D E R
DG-500M
DG-500M
843
_____________________
_____________________
November 1998
_____________________
_____________________
_____________________
_____________________
0.0

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  • Page 1 Phone 07257/8911 spare part and material sales Phone 07257/8960 repairservice Phone 07257/89-0 switch board and management Telefax 07257/8922 • • • • eMail: dg@dg-flugzeugbau.de • • • • Internet: www.dgflugzeugbau.de F L I G H T M A N U A L for the...
  • Page 2 Flight manual DG500 M DG Flugzeugbau GmbH Record of revisions Any revision of the present manual, except actual weighing data, must be recorded in the following table and in case of approved sections endorsed by the responsible airworthiness authority. The new or amended text in the revised page will be indicated by a black vertical line in the right hand margin, and the Revision No.
  • Page 3 Flight manual DG500 M DG Flugzeugbau GmbH Issued: November 1998...
  • Page 4 Flight manual DG500 M DG Flugzeugbau GmbH List of effective pages Section page issued Replaced/ replaced/ replaced replaced April 89 0.1 - See record of revisions " " " " April 89 April 89 Febr. 91 April 89 " "...
  • Page 5 Flight manual DG500 M DG Flugzeugbau GmbH List of effective pages (cont.) Section Page issued replaced replaced replaced replaced App. 4.10 " Febr.92 " 4.11 April 89 " 4.12 April 89 Febr. 96 " 4.13 " " " " 4.14 "...
  • Page 6 Flight manual DG500 M DG Flugzeugbau GmbH List of effective pages (cont.) Section page issued replaced replaced replaced replaced April 89 May 08 " Sept. 92 " " " " " Sept. 92 " " " " 7.10 " 7.11 "...

  • Page 7: Table Of Contents

    Flight manual DG500 M DG Flugzeugbau GmbH Table of contents Section General (a non-approved section) Limitations (an approved section) Emergency procedures (an approved section) Normal procedures (an approved section) Performance (a partly approved section) Mass (weight) and balance (a non-approved section)
  • Page 8 Flight manual DG-500M DG Flugzeugbau GmbH Section 1 1. General 1.1 Introduction 1.2 Certification basis 1.3 Warnings, cautions and notes 1.4 Descriptive data 1.5 Three view drawing Issued: April 1997...
  • Page 9 Introduction The sailplane flight manual has been prepared to provide pilots and in- structors with information for the safe and efficient operation of the DG- 500M motorglider. This manual includes the material required to be furnished to the pilot by JAR Part 22.
  • Page 10 Flight manual DG-500 M DG Flugzeugbau GmbH Warnings, cautions and notes The following definitions apply to warnings, cautions and notes used in the flight manual. Warning: means that the non observation of the corresponding procedure leads to an immediate or important degradation of the flight safety.
  • Page 11 Flight manual DG-500 M DG Flugzeugbau GmbH Descriptive data The DG-500M is a twoplace high performance sailplane with wing flaps and retractable powerplant. 4-piece wing constructed from carbonfibre with wing flaps. The wing joint is designed with the sparend at the inner wing panel for easy rigging and that the ailerons hook up automatically.
  • Page 12 Flight manual DG-500 M DG Flugzeugbau GmbH Belt reduction 3 : 1 and a large propeller (dia. 1.58 m, 5.18 feet) results in a low noise emission Excellent power on performance Further details: Waterballast and fuel tanks in the wings as options.
  • Page 13 Flight manual DG-500 M DG Flugzeugbau GmbH 3 view drawing Issued: April 1997...

  • Page 14: Limitations (An Approved Section)

    Flight manual DG-500M DG Flugzeugbau GmbH Section 2 Limitations Introduction Airspeed Airspeed Indicator Markings Power Plant Power Plant Instrument Markings Fuel Weight Center of Gravity Approved manoeuvres 2.10 Manoeuvring load factors 2.11 Flight crew 2.12. Kinds of operation 2.13 Minimum equipment 2.14 Aerotow and Winch- and Autotow - launching...
  • Page 15 Flight manual DG-500M DG Flugzeugbau GmbH 2.1 Introduction Section 2 includes operating limitations, instrument markings and basic placards necessary for safe operation of the motorglider, its engine, standard systems and standard equipment. The limitations included in this section have been approved by the LBA.
  • Page 16 Flight manual DG-500M DG Flugzeugbau GmbH 2.2 Airspeed Airspeed limitations and their operational significance are shown below: Speed (IAS) Remarks km/h(kts) Never exceed Do not exceed this speed in any speed (146) operation and do not use more flaps 0° up to than 1/3 of control deflection.
  • Page 17 Flight manual DG-500M DG Flugzeugbau GmbH 2.3 Airspeed Indicator Markings Airspeed indicator markings and their color code significance are shown below: Marking (IAS) value or Significance range km/h (kts) White Arc - 197 Positive Flap Operating Range - 106) (lower limit is maximum weight 1.1 VSO in landing configuration.
  • Page 18 Flight manual DG-500M DG Flugzeugbau GmbH 2.4 Power plant Engine manufacturer: Bombardier Rotax, Gunskirchen Austria Engine model: Rotax 535 C Maximum power: Take off: 44 kw (60 PS) continuous: 44 kw (60 PS) Max. engine RPM at MSL: Take off (max.
  • Page 19 Flight manual DG-500M DG Flugzeugbau GmbH 2.5 ff Cylinderhead temperature indicator: Right LCD display, indication digital with 3 digits, limitation data printed above display: red 95 °C When this temperature is exceeded the CHT display starts blinking. Fuel quantity indicator (only for the fuselage tank):...
  • Page 20 Flight manual DG-500M DG Flugzeugbau GmbH 2.7 Mass (weight) Maximum Take-Off mass: with waterballast: 825 kg, 1819 lbs without waterballast: W=WNLP + Wwings WNLP = max. mass of all non lifting parts see below Wwings = actual mass of the wings...
  • Page 21 Flight manual DG-500M DG Flugzeugbau GmbH 2.9 Approved manoeuvres This sailplane is certified for normal gliding in the "Utility" category. Simple aerobatics are approved but only without waterballast and with the engine retracted. The following aerobatic manoeuvres are approved see sect. 4.5.12:...
  • Page 22 Flight manual DG-500M DG Flugzeugbau GmbH 2.12 Kinds of operation A) With waterballast 1. Flights according to VFR (daylight) 2. Self launching 3. Aerotow 4. Winch- and auto-launching B) Only without waterballast and with the engine retracted 1. Cloud flying (daylight): permitted when properly instrumented (see below).
  • Page 23 Warning: Follow the loading chart, see sect. 6.8. The max. take off weight must no be exceeded. 2.18 Wing fuel tanks (Option) Max. capacity 20 l (5.3 U.S.gal.) per wing Don't park the DG-500M over night with fuel in the wing tanks. Issued: April 1997 TN 843/7...
  • Page 24 Flight manual DG-500M DG Flugzeugbau GmbH 2.19 Limitations placards DG Flugzeugbau GmbH type: DG-500 M Year of Consruction: serial no: Maximum airspeeds km/h Kts. Winch launch Aero-tow Manoeuvring V Rough air Max. flap extended speed +10°, +5° Extended powerplant Langing gear operating Maximum speed V Max.

  • Page 25: Emergency Procedures (An Approved Section)

    Flight manual DG500 M DG Flugzeugbau GmbH Section Emergency procedures Introduction Canopy jettison Bailing out Stall recovery Spin recovery Spiral dive recovery Recovery from unintentional cloud flying Engine failure Fire 3.10 Loss of electrical power in flight 3.11 Starting the engine with the starter not working 3.12 Retraction or extension of the power plant with the normal mechanism not...
  • Page 26 Flight manual DG500 M DG Flugzeugbau GmbH 3.1 Introduction Section 3 provides a checklist and amplification for coping with emergencies that may occur. Emergency situations can be minimized by proper preflight inspections and maintenance. Caution: Canopy jettison and bailing out should be trained several times on the ground before flying the aircraft.
  • Page 27 Flight manual DG500 M DG Flugzeugbau GmbH Caution: To prevent unintentional spinning do not stall the sailplane. Fly with enough speed reserve especially in gusty conditions and in the landing pattern. Intended spins with waterballast are not permitted. Height loss during recovery up to.
  • Page 28 Flight manual DG500 M DG Flugzeugbau GmbH Engine failure 3.8.1 Power loss during take off Push the control stick forwards immediately, watch the airspeed indicator! Sufficient runway - land normally straight ahead with engine extended - flaps L - airbrakes as desired...
  • Page 29 Flight manual DG500 M DG Flugzeugbau GmbH 3.9.3 In the fuselage in flight 3.9.3.1 Front fuselage (electrical fire) - switch off main switch - close ventilation, open swivel air vents and side window - land as soon as possible if the fire is not extinguished (circuits are effectively protected by circuit breakers) 3.9.3.2 Rear fuselage (engine)
  • Page 30 Flight manual DG500 M DG Flugzeugbau GmbH On the ground: Handstarting the engine is not possible as you don't reach the necessary starting RPM. You may carry out an aerotow and airstart the engine see above. 3.12 Retraction or extension of the power plant with the normal...
  • Page 31 Flight manual DG500 M DG Flugzeugbau GmbH 3.15 Emergency wheel up landing It is not recommended to execute a wheel up emergency landing, as the energy absorption capability of the fuselage is much smaller than that of the landing gear.

  • Page 32: Normal Procedures (An Approved Section)

    Flight manual DG500 M DG Flugzeugbau GmbH Section Normal procedures Introduction Rigging and derigging, filling the watertanks, refuelling 4.2.1 Rigging 4.2.2 Filling the wing watertanks (Option) 4.2.3 Refuelling 4.2.4 Derigging Daily Inspection Pre-flight Inspection Normal procedures and recommended speeds 4.5.1 Engine starting, taxiing procedures 4.5.2 Self-launching, take off and climb...
  • Page 33 Flight manual DG-500M DG Flugzeugbau GmbH Introduction Section 4 provides checklist and amplification procedures for the conduct of normal operation. Normal procedures associated with optional systems can be found in section 9. Rigging and derigging, filling the watertanks, refuelling 4.2.1 Rigging 1.
  • Page 34 Flight manual DG-500M DG Flugzeugbau GmbH 4.2.1 ff The sheet metal plate securing of the securing device disengaged must be flush with the main pin vertical pin of the vertical pin main pin securing engaged Rig the left outboard panel accordingly.
  • Page 35 Flight manual DG-500M DG Flugzeugbau GmbH 4.2.2 Filling the wing water ballast tanks (Option) To fill the water ballast, pull back the lever (top-right tank, bottom-left tank) in the cockpit. Place one wingtip on the ground. Attach the hose supplied with your glider in the water outlet on the lower surface of the wing.
  • Page 36 The pump system is available from DG Flugzeugbau. The power supply socket is located in the rear cockpit - note the master switch has to be switched on. 4.2.3.4 Filling the wing fuel tanks (optional) can only be done using the above mentioned electric pump system.
  • Page 37 Flight manual DG-500M DG Flugzeugbau GmbH 4.2.4 Derigging Derigging follows the reverse of rigging. Water ballast and fuel tanks in the wings must first be emptied. Fuel in wing tanks can be simply transfered to the fuselage tank or emptied directly using the pump system (see 4.2.3.3) in reverse.
  • Page 38 Flight manual DG-500M DG Flugzeugbau GmbH 4.3 Daily Inspection Please keep in mind the importance of the inspection after rigging the glider and respectively each day prior to the first take off. It is for your safety. Caution: After a heavy landing or if other high loads have been subjected to your sailplane, you must execute a complete inspection refering to maintenance manual sect.
  • Page 39 Flight manual DG-500M DG Flugzeugbau GmbH B Inspection after rigging Walk around the aircraft 1. All parts of the airframe a) check for flaws such as bubbles, holes, bumps and cracks in the surface b) check leading and trailing edges of the wings and control surfaces for cracks 2.
  • Page 40 Flight manual DG-500M DG Flugzeugbau GmbH 4.3 B ff 3. C.G. Tow hook a) check the ring muzzle of the C.G. hook for wear and function b) check for cleanliness and corrosion 4. Main landing gear and nose wheel a) check the struts, the gear box, the gear doors and the tyre for wear; dirt...
  • Page 41 Flight manual DG-500M DG Flugzeugbau GmbH B ff i) check cooling liquid level, refill if necessary Warning: The hose clamp which secures the cap of the cooling liquid reservoir must be mounted so that the screwed joint is in the front to prevent the engine retaining cables catching the screwed joint.
  • Page 42 Flight manual DG-500M DG Flugzeugbau GmbH 4.4 Preflight inspection 1. Lead ballast (for under weight pilot)? 2. Parachute worn properly? 3. Safety harness buckled? 4. Front seat: pedals adjusted? Rear seat: seating height adjusted? 5. All controls and knobs in reach? 6.
  • Page 43 Flight manual DG-500M DG Flugzeugbau GmbH Normal procedures and recommended speeds 4.5.1 Engine starting, taxiing procedures 4.5.1.1 Engine starting on the ground a) Switch the ignition off in the front DEI, but switch it on in the rear DEI. b) Main switch on.
  • Page 44 Flight manual DG-500M DG Flugzeugbau GmbH 4.5.1.2 Starting problems a) The engine is equipped with an electric fuel injection (primer) instead of a choke valve. The automatic control of the primer enables engine starting with little risk of misoperation. To inspect the correct functions of the primer there is a control light in the front instrument panel which shines as long as fuel is injected (primer valve open).
  • Page 45 Flight manual DG-500M DG Flugzeugbau GmbH 4.5.1.3 Taxiing Taxiing without assistance can be done with the steerable nose wheel (Option) and one wingtip on the ground. Flapsetting +10°. Operate the airbrake handle (connected to wheel brake) with the left hand and the throttle with the right hand.
  • Page 46 4.5.2.3 Climb After take off accelerate the DG-500M to Vy = 90 km/h (49 kts) and climb with this speed. Retract the landing gear after reaching safety altitude. Execute the whole climb with full throttle to ensure a smooth engine run.
  • Page 47 Flight manual DG-500M DG Flugzeugbau GmbH 4.5.3 Launch Due to the towhook position being in the middle of the fuselage and the excellent effectiveness of the ailerons and rudder, the possibility of wing dropping or ground loops, even on a slow starting aerotow is reduced.
  • Page 48 Flight manual DG-500M DG Flugzeugbau GmbH Winch launch (only allowed at the C.G. release) Set the wing flaps to +10°. Set the trim fully nose down for winch launch. To accomplish this, operate trimmer lever on the control column and push the control knob on the left cockpit wall to its forwardmost position.
  • Page 49 4.5.4 Free flight Stalling characteristics (level and turning flight) When stalled the DG-500M will continue to fly level with high sink rate and buffeting. If the stick is pulled further the DG-500M will drop the nose or drop one wing. During the stall a large angle of attack will be reached.
  • Page 50 4.5.5 Cruise engine on and ultilisation of the wing fuel tanks General The engine of the DG-500 M is not designed for continuous cruise with the engine. Due to the high drag of the extended powerplant and as the propeller is designed for optimum take off performance cruise with higher speed is not efficient.
  • Page 51 5. Slow down the engine slowly with the propeller brake. 6. If the propeller does not stop in the retraction position, release the prop-brake again and accelerate the DG-500 M to approx.90 km/h (49 kts) until the propeller starts turning slowly. Stop the propeller with the prop-brake as soon as the control light stops shining (red).
  • Page 52 Flight manual DG-500M DG Flugzeugbau GmbH If option level II is installed, it is possible to turn the propeller into the retraction position by pressing the starter button, if the propeller was not stopped already in the retraction position (only possible in the air).
  • Page 53 When flaring out keep the airbrake setting you were using, opening them further may drop the sailplane. You can land the DG-500M on soft fields with the landing gear extended, as there is no tendancy of nosing over. During ground roll the wing flaps may be kept in the landing position.
  • Page 54 Flight manual DG-500M DG Flugzeugbau GmbH Clean the landing gear and tow release after landing in an muddy field. Dirt in the front strut can keep the landing gear from locking over center next time. Simply hosing with water is the best cleaning method.
  • Page 55 Flight manual DG-500M DG Flugzeugbau GmbH 4.5.8 Flight with water ballast Wing tanks recommended ballast for smooth thermals: rate of climb ballast ltr. U.S. gallons below 1,5 none 1,5-3 300-600 more than 3 max. ballast Do not exceed the maximum gross weight when loading the water ballast.
  • Page 56 Flight manual DG-500M DG Flugzeugbau GmbH Apply the controls in short periods. It is not allowed to carry waterballast. Caution: 1. At temperatures below -20°C (-4°F) there is the risk of cracking the gelcoat. 2. Attention must be paid to the fact that at higher altitudes the true airspeed is grater than the indicated airspeed.
  • Page 57 Caution: Prolonged spinning is only possible at aft C.G. positions, this means single seated. It is not necessary to extend the dive brakes during spin recovery. The DG-500M shows a very large nose down pitch after leaving the spin. So you have to flare out correspondingly.

  • Page 58: Performance (A Partly Approved Section)

    Flight manual DG-500M DG Flugzeugbau GmbH Section 5 Performance Introduction Approved Data 5.2.1 Airspeed indicator system calibration 5.2.2 Stall speeds 5.2.3 Take off performance 5.3. Additional Information 5.3.1 Demonstrated crosswind performance 5.3.2 Gliding performance 5.3.3 Flight Polar 5.3.4 Operating the wingflaps 5.3.5 Performance under power...
  • Page 59 Flight manual DG-500M DG Flugzeugbau GmbH 5.1 Introduction Section 5 provides approved data for airspeed calibration, stall speeds and take-off performance and non-approved additional information. The data in the charts has been computed from actual flight tests with the sailplane in good and clean condition and using average piloting techniques.
  • Page 60 Flight manual DG-500M DG Flugzeugbau GmbH IAS = indicated airspeed CAS = calibrated airspeed Caution: The airspeed indicator is to be connected to the static ports and pitot probe in the fuselage nose. Issued: April 1997 App. 5.3 5.2.2 Stall speeds...
  • Page 61 Flight manual DG-500M DG Flugzeugbau GmbH Airbrakes retracted Flap setting wing loading kg/m² lbs/ft² L = +15° km/h 34.6 36.7 38.9 + 10° km/h 35.6 38.3 40.5 0° km/h 37.8 40.5 43.2 - 15° km/h 40.5 43.2 45.9 Airbrakes extended...
  • Page 62 Flight manual DG-500M DG Flugzeugbau GmbH The data is valid for take off from dry level concrete surface, no wind and proper condition of engine, propeller and aircraft. The take off procedure is to be executed according to 4.5.2. SR = take off roll S = take off distance to 15 m (50 ft.) altitude...
  • Page 63 Flight manual DG-500M DG Flugzeugbau GmbH 5.3.1 Demonstrated crosswind performance The demonstrated crosswind velocity is 15 km/h (8 kts) according to the airworthiness requirements. 5.3.2 Gliding performance Performance data Wing loading kg/m² (lbs/ft²) 35 (7.2) 40 (8.2) 45 (9.2) min.sink rate (ft/min) .57 (112)
  • Page 64 Flight manual DG-500M DG Flugzeugbau GmbH Issued: April 1997 App. 5.7 5.3.4 Operating the wing flaps...
  • Page 65 Flight manual DG-500M DG Flugzeugbau GmbH The following flap settings should be used for optimum performance for the speed ranges and wing loadings specified: Speeds in km/h W/S (kg/m²) flap + 10° up to 75 up to 80 up to 85 + 5°...
  • Page 66 Flight manual DG-500M DG Flugzeugbau GmbH 5.3.5.1 Rate of climb Measured rates of climb for 15°C (59°F) at MSL. 15°C increase in temperature reduces the rate of climb by ca. 0.12 m/s (24 ft/min.). Issued: April 1997 5.3.5.3 Cruising Flight...
  • Page 67 Flight manual DG-500M DG Flugzeugbau GmbH The cruising speed is 140-150 km/h (76-81 kts) with maximum continuous power 6900 RPM. 5.3.5.4 Maximum operational altitude The maximum operational altitude is more than 5000 m (16000 ft) MSL. For continuous operation at higher altitudes, the main nozzle in the carburettor may be set to a smaller fuel flow in accordance with the engine manufacturer.

  • Page 68: Mass (Weight) And Balance

    Flight manual DG-500M DG Flugzeugbau GmbH Section 6 Mass (weight) and balance 6.1 Introduction 6.2 Weighing procedures 6.3 Weighing record 6.4 Basic empty mass and C.G. 6.5 Mass of all non-lifting parts 6.6 Max. mass 6.7 Useful loads 6.8 Loading chart 6.9 C.G.
  • Page 69 A comprehensive list of all equipment available for this sailplane is contained in the maintenance manual. 6.2 Weighing procedures See maintenance manual DG-500M. Datum: Wing leading edge at the rootrib. Reference line: aft fuselage centre line horizontal. The weighing is to be executed with the engine retracted and all tanks emptied.
  • Page 70 Flight manual DG-500M DG Flugzeugbau GmbH 6.6 Max. mass (weight) Max. weight without waterballast = WNLP + W wings Max. weight with waterballast = 825 kg (1819 lbs) 6.7 Useful loads Max. load without waterballast = max. weight without waterballast - empty weight Max.
  • Page 71 Flight manual DG-500M DG Flugzeugbau GmbH 6.8 Loading chart Cockpit load see table on page 6.5. a) single seated max. load in the front seat 110 kg 242 lbs min. load in the front seat see placard in cockpit and weighing report page 6.5...
  • Page 72 Flight manual DG-500M DG Flugzeugbau GmbH Weighing report (for 6.3) Distances in mm, masses in kg 25.4 mm = 1 inch 1 kg = 2.2046 lbs. Date of weighing: executed by: Date of equipment list: Empty mass Empty mass C.G.
  • Page 73 Flight manual DG-500M DG Flugzeugbau GmbH for 6.4 Empty weight C.G. limits 25.4 mm = 1 in., 1 kg = 2.2046 lbs Issued: April 1997...
  • Page 74 Flight manual DG-500M DG Flugzeugbau GmbH DG-500M ballast chart (for 6.8) to determine the max. allowable waterballast and fuel in the wing tanks. 1 kg = 2.2046 lbs 3.785 kg (l) = 1 US gal. Issued: April 1997...
  • Page 75 Flight manual DG-500M DG Flugzeugbau GmbH 6.9 C.G. calculation The actual C.G. can be determined as follows: For each item, the moment mass x C.G. has to be determined and to be added up and divided by the total mass. See the following example: 1 kg = 2.2046 lbs = .264 US gal.water...
  • Page 76 Flight manual DG-500M DG Flugzeugbau GmbH If the actual pilot C.G. is not known, you have to take the values from the following table: flight: f = near the forward C.G. r = near the aft C.G. pilot C.G. (m)

  • Page 77: Sailplane And Systems Description (A Non-Approved Section)

    Flight manual DG-500M DG Flugzeugbau GmbH Section 7 Sailplane and systems description Introduction Airframe Cockpit, cockpit controls and placards Flight controls Airbrake system Landing gear system Tow hooks Seats and safety harness Baggage compartment 7.10 Water ballast system 7.11 Powerplant 7.12...
  • Page 78 This section provides description and operating of the sailplane and its systems. Refer to section 9 "Supplements" for details of optional systems and equipment. M.M. = Maintenance manual 7.2 Airframe The DG-500M is a twoseater high performance sailplane with retractable powerplant and wing flaps. Construction Wings, ailerons and CFRP-foam-sandwich-shell wingflaps...
  • Page 79 Flight manual DG-500M DG Flugzeugbau GmbH 7.3 Cockpit, cockpit controls and placards Issued: April 1997...
  • Page 80 Flight manual DG-500M DG Flugzeugbau GmbH 1) Control Column The rear control stick is removable. Therefore open the snap shakle at the trim release lever and disengage the trim cable. Pull out the stick after opening the cap nut. 2) Release lever for the trim mechanism - green.
  • Page 81 Flight manual DG-500M DG Flugzeugbau GmbH 10) Undercarriage retraction - extension handle - black forward - undercarriage down back - undercarriage retracted The undercarriage is locked in the extended position by an overcentre locking arrangement and an additional safety catch. The handle is to be turned towards the cockpit wall, so that the locking catch will engage.
  • Page 82 With this main switch the complete electric power schalter supply will be cut off mechanically. After taking out the main switch key the DG-500 M can't be operated. 24) Manual retraction - extension switch for the powerplant By lifting the red cover plate you switch the system from automatic to manual operation and give access to the manual retraction extension switch.
  • Page 83 Flight manual DG-500M DG Flugzeugbau GmbH 26) Operating knobs for the wing fuel tanks (Option) - black to the front = open auf Flügeltanks zu to the rear = closed open ingtanks closed upper knob = right tank lower knob = left tank...
  • Page 84 Flight manual DG-500M DG Flugzeugbau GmbH 32) ff engages and holds the propeller until the engine is retracted. Note: Option level II (no on-off switch): Electrical aligning of the propeller (only in conjunction with Option Level I). If the propeller after stopping is not in the retraction position, it is possible to turn the propeller slowly with the starter motor into retraction position by pressing the starter button.
  • Page 85 Flight manual DG-500M DG Flugzeugbau GmbH Controls and indicators in the DEI (digital engine indicator) only in front DEI 37) Ignition switch: ignition up=on, down=off To operate the switch, the toggle has to be pulled out first (safety lock against inadvertent operation). The ignition is only on, if the ignition switches in both cockpits are in the "on"...
  • Page 86 Flight manual DG-500M DG Flugzeugbau GmbH 37) ff On the ground prior to take off extend the engine via the manual switch No. 24. The automatic extension-retraction system will only be activated if the change over switch 36 was in "on" position before the ignition was switched "on"...
  • Page 87 Flight manual DG-500M DG Flugzeugbau GmbH 42) Control light Gen. : red permanent light = Generator not charging the battery = Generator charging the battery 43) Digital readout selector switch CHT/battery voltage for the right hand display CHT °C Battery V...
  • Page 88 Flight manual DG-500M DG Flugzeugbau GmbH shows that the DEI is working in the sequence which controls the - - - options (see item 32 automatic propellerbrake and propeller alignment) even if these options are not installed. Caution: If is displayed instead of the engine RPM the approximity switch at the upper drive belt pulley is defective (short circuit in the switch).
  • Page 89 Flight manual DG-500M DG Flugzeugbau GmbH 7.4 Flight controls Rudder control: Cable system with adjustable pedals in the front cockpit. See diagram 2 M.M. The steerable nosewheel (Option) is connected to the rudder control with springs. Elevator control: All pushrods slide in maintenance free nylon ball guides.
  • Page 90 Flight manual DG-500M DG Flugzeugbau GmbH b) Tailwheel: Tyre 200 x 50 2 PR Diameter 200 mm (7.87 in) Tyre pressure 4 bar (58 psi) c) Nosewheel: Tyre 260 x 85 Diameter 260 mm (10.2 in.) Tyre pressure 2.5 bar (36 psi) Option: See diagram 10 M.M.
  • Page 91 Flight manual DG-500M DG Flugzeugbau GmbH 7.11. Powerplant 7.11.1 Engine Rotax 535 C Manufacturer: Bombardier Rotax at Gunskirchen, Austria Type: Watercooled 521 ccm 2-cylinder twostroke engine with electronic dual ignition and rotary valve intake control, air intake silencer. Take off power: 60 PS (44 KW) (max. for 5 min.) at 7200 RPM...
  • Page 92 To charge the battery to its full capacity an automatic charger with 14.4 V max. charging voltage is necessary (normal automatic chargers charge only up to 13.8 V). Such a charger is available through DG Flugzeugbau code no. Z08.
  • Page 93 It is possible to install two oxygencylinders with 3 l (0.8 U.S.gal.) capacity, diameter 100mm (3.94 in.) total length 575 mm (22.6 in.) (available through DG Flugzeugbau GmbH). Installation place: one bottle in front of the rear seat and one bottle in the baggage compartment see installation plan 5 EP 31.
  • Page 94 7.16.3 Oxygen system cont. b) Installation of the oxygen equipment To ensure a safe installation ask DG Flugzeugbau for an installation instruction. For the installation of the Dräger Höhenatmer E 20088 you will find an installation plan 5 EP 34 in the maintenance Mamual.

  • Page 95: Sailplane Handling, Care And Maintenance (A Non-Approved Section)

    Flight manual DG-500M DG Flugzeugbau GmbH Section 8 Sailplane handling, care and maintenance 8.1 Introduction 8.2 Inspection periods and maintenance 8.3 Alterations or repairs 8.4 Parking 8.5 Trailering 8.6 Towing on the ground 8.7 Cleaning and care 8.8 Engine trouble shooting...
  • Page 96 External loads such as external camera installations are to be regarded as alterations! Repair instructions can be found in the DG-500M repair manual. No repairs should be carried out without referring to the manual. Issued: January 2001...
  • Page 97 Flight manual DG-500M DG Flugzeugbau GmbH 8.4 Tie Down, Parking To tie down the wings use the wing cradles of your trailer. The fuselage should be tied down just ahead of the fin. Water ballast can be left in the wings, for a few days only, but not when there is the possibility of freezing! On sunny days the cockpit should be closed and covered.
  • Page 98 Flight manual DG-500M DG Flugzeugbau GmbH 8.6 Towing on the ground a) by towing from the nose hook using a rope with the standard double ring authorized for the release. b) by using a tow bar which is fixed at the tail dolly and a wing tip wheel.
  • Page 99 Flight manual DG-500M DG Flugzeugbau GmbH 8.7 ff - Never use alcohol, acetone, thinner etc.. Do not use detergents for washing! - Protect the surface from intense sunlight. - Protect the aircraft from water and moisture. See sect. 8.4 and 8.5.
  • Page 100 Flight manual DG-500M DG Flugzeugbau GmbH 8.8 Power plant trouble shooting 1a) Extension and retraction doesn't work A. Circuit breaker popped out. Press in again B. Defective relay C. Defective DEI In cases B und C use the manual extension - retraction switch 1b) Automatic retraction doesn't work The proximity switch at the upper drive belt pulley is defective.
  • Page 101 Flight manual DG-500M DG Flugzeugbau GmbH 8.8 ff 5. Fuel leaks out of the carburettors see 4 A 6. Loss of electrical power see flight manual sect. 3.10. 7. Ignition problems No spark: - on 1 spark plug of one ignition circuit: Spark plug, ignition cable or electronic box defective.

  • Page 102: Supplements

    Flight manual DG-500M 9. Supplements Section page Introduction List of inserted supplements Special equipment for very small pilots 9.1 Introduction This section contains the appropriate supplements necessary to safely and efficiently operate the sailplane when equipped with various optional systems and equipment not provided with the standard sailplane.
  • Page 103 Flight manual DG-500M 9.3 Special equipment for very small pilots (TN500/02) To facilitate the operation of the glider by very small pilots 3 different items have been developed, which may be used separately or together. 9.3.1 Removable seat back for the front seat a) Installation of the seat back: Install the seat back with 2 screws M6x16 DIN965 4.8 BIC with cup washers 15 x M6 MS NI NR4157 to the threads...

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