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Flight Manual 

 

Flight Manual 

Appr. 

Issue: 

15.09.2017  PA 

Revision:  TN 12   30.10.21   PA 

4.20 

CHECKLIST: Sustainer assisted aerotow 

-  Power-plant main switch:  ON (power-plant instrument on) 
-  Power lever: 

 

EXTEND (until the noticeable stop 

 

 

 

 

 

 

 

position) 

-  Observe correct extension process in the mirror, blue message 

„PRESS Starter Button“ appears, propeller holds in vertical position 

-  Pre take-off check 
-  Trim: 

 

 

NEUTRAL 

-  Attach tow rope 
-  Wheel brake: 

 

ENGAGE (fully extended airbrakes) 

-  Propeller area:  

 

CLEAR 

-  Starter: 

 

 

ENGAGE, motor still holds position 

-  Power setting 

 

50% (≈ half travel / 12 kW)

 

-  Tighten towrope (clear for take-off) 
-  During roll-up: retract airbrakes, power setting 100% 
-  Proceed like a normal aerotow 

CAUTION 

If the power lever is set to 0% after a motor run, means pulled down 

to the noticeable stop position, the propeller is held vertically by the 

motor. If then power is set again, the starter has to be engaged 

again to activate the motor run. 

NOTE 

The motor speed is limited at its maximum permissible value by the 

power electronics. This means, the motor cannot be overrevved 

even at high towing speeds. 

Prepare together with the tow pilot how to proceed in case of an aborted 

take-off respectively engine failure for the different phases of the take-off 

prior to the tow. The local conditions of the airfield and weather have to 

be taken into account. 
 

Summary of Contents for 32 EL

Page 1: ... exceed this speed during aerotowing VTA Maximum Sustainer assisted aerotowing speed 180 km h 97 kts 111 mph Do not exceed this speed during sustainer assisted aerotowing VLO Maximum Landing Gear Operating speed 180 km h 97 kts 111 mph Do not extend or retract the landing gear above this speed VPE Maximum speed with propeller extended 180 km h 97 kts 111 mph Do not exceed this speed with the engin...

Page 2: ... assistance by the own sustainer propulsion The flap settings 1 3 are not permitted for Aerotow Winch and Autotow launches The maximum permissible launch speeds are aerotowing 180 km h 97 kts 111 mph winch launch 140 km h 75 kts 87 mph For winch launch a weak link of 1000 daN 10 2248 lbs black must be used with the launch cable or tow rope For Aero Tow a weak link according to the tow plane must b...

Page 3: ...st important mass weight and speed limitations The original placard is to be enlarged by 130 This placard is to be glued below the data placard This placard is to be glued near the data placard This placard is to be glued near the data placard This placard is to be glued near the data placard This placard is to be glued near the data placard Cloud flying and Aerobatics are not permitted ...

Page 4: ...d for this WARNING If the emergency procedure is applied the propeller as well as the engine compartment doors will be unavoidably severely damaged Power plant main switch OFF Press and hold the turn push button of the power plant instru ment and switch power plant main switch ON simultaneously service menu is shown Press the turn push button once and turn one notch clockwise field retract is acti...

Page 5: ...ller and starting motor Battery emergency stop OFF not pushed release by turning Power plant main switch ON power plant instrument on Power lever EXTEND until the noticeable stop position Observe correct extension process in the mirror blue message PRESS Starter Button appears propeller holds in vertical position Check power plant instrument for warnings Propeller area CLEAR Wheel brake ENGAGE ful...

Page 6: ......

Page 7: ...t 70 to guarantee a sufficient amount of energy for the tow The proper function of the electric propulsion has to be tested with a ground run before the tow An indicated power of at least 26 kW as well as a speed of at least 2200 rpm have to be achieved with a power setting of 100 while stationary See also page 4 10a In general all procedures and limits of the normal aerotow apply In ad dition the...

Page 8: ...towrope clear for take off During roll up retract airbrakes power setting 100 Proceed like a normal aerotow CAUTION If the power lever is set to 0 after a motor run means pulled down to the noticeable stop position the propeller is held vertically by the motor If then power is set again the starter has to be engaged again to activate the motor run NOTE The motor speed is limited at its maximum per...

Page 9: ... check proper airspeed The pilot of the sailplane can apply the following standard procedures CHECKLIST Aborted take off sailplane rolling on ground Release tow rope Power lever all way down Engage wheel brake Change direction if necessary CHECKLIST Aborted take off sailplane landing straight Release tow rope Power lever all way down Extend airbrakes and perform a landing Change direction or perfo...

Page 10: ...Maintenance Manual Maintenance Manual Issue 01 04 2017 PA Revision TN 12 30 10 21 PA 9 9 21 22 This placard must be en larged by 141 21a This placard is af fixed below the Data and Loading placard 21 ...

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