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Flight envelope of the aircraft 

FM-250 Vampire

 

 

 
 
2.5 Engine operating limitations 

 

WARNING 

Engines Rotax 912 UL and 912 ULS are not certified for aviation use and sudden 

failure can occur at any time. That can lead to an emergency landing.  Do not attempt 

to fly when safe landing in the case of engine failure is not possible. There is no life 

service or safety certificate issued to these engines. These engines are for use in 

experimental and ultralight uncertified aircraft only and only in circumstances in which 

an engine failure will not compromise safety. 

 
 

WARNING 

All risks and the responsibility concerning using and operating these engines are on 

the side of the user. We inform you - as the user, that there is a possibility of sudden 

engine failure. 

 
 

Minimum outside temperature for take off  
Maximum outside temperature for take off  
Take off RPM (5 minutes max.) 
Maximum continuous RPM 
Idle speed  

-25˚C 

+50˚C 

5.800 RPM 
5.500 RPM 
1.400 RPM 

 

This data can slightly differ during actual operation of the engine, for details look in the 
engine operator’s manual.    
The installed engine must be operated in accordance with all instructions of its manufacturer.  
If there is any information in this document, which contradicts the manufacturer’s instructions, 
it is to be disregarded.  

Flight Manual                                       Page 13 of 40 

Summary of Contents for FM250 VAMPIRE

Page 1: ...www flyingmachines cz FLYING MACHINES s r o info flyingmachines cz FM 250 Vampire Flight Manual Flight Manual Page 0 of 40...

Page 2: ...er 1 2 5 Landing gear 1 2 6 Controls 1 2 6 1 Movement of flight controls 1 2 7 Equipment 1 2 8 Technical drawing 1 2 9 Detecting the position of the center of gravity permitted limits 1 2 9 1 Weighing...

Page 3: ...ff 3 3 3 After take off 3 3 4 Climb 3 3 5 Cruise 3 3 6 Descent 3 3 7 Downwind 3 3 8 Base 3 3 9 Final 3 3 10 Landing 3 3 11 Shut down 3 4 After flight inspection 3 5 Flying with a crosswind component 3...

Page 4: ...Maintenance 7 2 1 Lubrication 7 2 2 Disassembly of the nose wheel 7 2 3 Disassembly of the main wheel 7 2 4 Tire repairs 7 2 5 Electrical installation 7 2 5 1 Electrical installation inspection 7 2 6...

Page 5: ...S s r o info flyingmachines cz 9 Rotax 912 912S engine maintenance 9 1 Oil change 9 2 Spark plugs 9 3 Fuel 9 4 Liquid coolant 9 5 Service life and engine inspections 9 6 Service life of rubber parts o...

Page 6: ...ommand It will not teach you to fly or build the airplane but it provides important information to fly the airplane safely It must remain in the aircraft during all flights OPERATIONS AUTHORIZED FM 25...

Page 7: ...nected to the fuselage by two screws all fitted in bearings The entire empennage is also all composite construction The right elevator contains trim tab 1 2 2 Fuel system The fuel system consists of a...

Page 8: ...effected by rudder pedals Their movement is transmited to the rudder using cables Braking is effected by foot operated brakes located on the rudder pedals Landings flaps are actuated by a lever insta...

Page 9: ...www flyingmachines cz FLYING MACHINES s r o info flyingmachines cz 1 2 8 Technical drawing Flight Manual Page 8 of 40...

Page 10: ...uctions 1 2 9 1 Weighing the airplane for the headmost position of the center of gravity pilot s seat is occupied with a pilot with the lowest allowed weight there can not be any load in the plane the...

Page 11: ...cz FLYING MACHINES s r o info flyingmachines cz Gn Gml Gmr Gtotal La Lb kg kg kg kg 706 mm 1518 mm Center of Gravity Lt Gn x Lb Gtotal Xt La Lt X Xt x 100 MAC Lt x 1518 Xt 706 X x 100 1312 Flight Man...

Page 12: ...g speed abbreviated Vno Yellow Arc Caution Range 240 km h 270 km h The yellow arc represents the caution range speeds appropriate only in smooth air The top of the yellow arc coincides with Vne the ne...

Page 13: ...d this speed with the flaps extended Minimum speed with the flaps retracted Minimum speed with the flaps full extended Indicated Air Speed 2 4 Weight and load factors 2 4 1 Maximum and minimum weights...

Page 14: ...and only in circumstances in which an engine failure will not compromise safety WARNING All risks and the responsibility concerning using and operating these engines are on the side of the user We in...

Page 15: ...ht regime and the consumption is also influenced by the meteorological conditions consumption increases with higher temperatures In general flight with heavier airplane requires higher engine output A...

Page 16: ...age of the pilot is not confined in any way and is derived of the requirements concerning the minimum age of the pilot or student pilot by the regulation UL3 The upper limit of the age is given by the...

Page 17: ...me kinds of load for example weapons explosives volatile and caustic agents etc Regarding technical ability of an airplane a pilot can transport the goods in the cockpit only by maintaining the follow...

Page 18: ...ttributes tempts a pilot to try aerobatic maneuvers however this airplane is not an aerobatic airplane and intentional stalls spins and other aerobatic maneuvers are strictly prohibited 2 12 1 Allowed...

Page 19: ...heck general conditions Check general conditions Check for wear cuts and proper inflation Check blocks and discs for wear and damage Check safety pins Check for external damage Check for external dama...

Page 20: ...possibility that small parts of rubber could have gotten in to the carburetor stirrup Let an authorized technician clean it Propeller check the attachment possible damage propeller cone attachment if...

Page 21: ...LOSE warm engine full back cold engine 1 cm open warm engine ON ON apply pull back hold between your knees PROP CLEAR crank engine check oil pressure within 10 sec min 20 kPa ON ON If the engine does...

Page 22: ...eed of 15 km h and while taxiing check the brakes and nose wheel steering If taxiing with a crosswind component apply the into wind ailerons flight controls instruments seat belts canopy trim flaps ch...

Page 23: ...0 and 130 km h 3 3 7 Downwind airspeed engine instruments safety belts base leg situation runway situation radio 120 km h check fasten check check communicate 3 3 8 Base airspeed landing flaps trim 10...

Page 24: ...the possibility of landing with higher than idle RPM which noticeably decreases the stall speed If the adjustable propeller is provided do not forget to set the minimum angle of attack prior to landi...

Page 25: ...the airspeed in the range of 110 120 km h at an altitude below 100 m GND perform the emergency landing strait ahead because turns at a small height above the ground at low speed can be dangerous and a...

Page 26: ...anding brakes throttle ignition main switch vacate aircraft idle shut off apply full power after aircraft stops OFF after remaining fuel in carburetor is used up OFF 4 3 3 Engine fire in flight fuel v...

Page 27: ...suitable landing site make a pass at 100 km h at the height of 50 m AGL to check for obstructions and inspect the surface conditions fly a traffic pattern land in 1 3 of the landing area before touch...

Page 28: ...ss of control of the airplane for example in the case of its destruction In that case perform the following turn off the ignition fasten your seat belts activate the BRS if the airplane is equipped wi...

Page 29: ...the MSA standards With increasing altitude the rate of climb decreases Rate of climb for the engine Rotax 912UL 7 m s The loss of height from the beginning of stall initiated from horizontal flight t...

Page 30: ...e and damage the varnish 6 2 Manipulation with an airplane Due to the airplane s low weight manipulation is easy even for only one person It is allowed to manipulate with the airplane this way push on...

Page 31: ...ish the glass parts of the canopy use only buckskin wash it often in clean water wash and wipe off the leading edges of the wings and empennage clean the bottom part of the fuselage behind the front u...

Page 32: ...n refill filter under the filling neck of the funnel approved for filling the airplanes ATTENTION Do not use filter refills from synthetic fibers slowly pour in fuel pay attention and stop when you sp...

Page 33: ...ts actual state 7 2 Maintenance When buying a new airplane especially carefully check tightening of the fuel lines in the engine area and the state of the fuel filter Beside that carefully check all a...

Page 34: ...ws should be replaced with new ones mark the screw position with marker 7 2 3 Disassembly of the main wheel The disassembly demands the co operation of two persons chock undamaged wheel of the main un...

Page 35: ...d patch it with the body filler mixed according to the directions for use After hardening sand it down and varnish the surface 7 2 9 Changing the fuel filter in the engine area We can not determine ho...

Page 36: ...it must be at least 100 mm wide and 1000 mm long The side which supports and touches the wing must contain a soft at least 20 mm thick felt cover 7 3 Introductory inspection Introductory inspection is...

Page 37: ...test by the test pilot 7 6 Periodic inspection every 200 hours The range is the same as the inspection every 100 hours plus the ignition spark plugs are changed 7 7 Periodic inspection every 300 hours...

Page 38: ...formed by a test pilot is a must after any flight controls repair 8 4 Airframe repairs The damaged surface can be patched sanded down and varnished only when it is damaged slightly When perforation or...

Page 39: ...eaning the contacts and connections etc Other repairs of the electrical system and other electrical appliances can be performed only by the service center of the producer ATTENTION All repairs must be...

Page 40: ...tting this work have done by an authorized technician 9 2 Spark plugs The inspection and cleaning of the spark plugs should be done every 100 hours of engine operations or when the starting of engine...

Page 41: ...on of this document and its producer supposes that the prescribed maintenance of the engine will be performed by an authorized technician The 25 hour inspection includes oil and oil filter change Work...

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