EP's Flashcards
LEARN THE EMERGENCY PROCEDURES FOR THE HELICOPTER
Land Immediately
Land on the nearest clear area where a safe normal landing can be performed.
Land as soon as practical
Landing site is at pilot’s discretion based on nature of problem and available areas.
Power Failure Above 500 Feet AGL
Lower collective
Establish a steady glide at 70 knots
Adjust collective to keep rpm between 97 and 108 percent.
Select landing spot into the wind
Restart at pilots discretion
Unable restart, unnecessary switches and fuel valve off
40 ft agl cyclic flare
8 ft agl level ship and raise collective to cushion landing.
POWER FAILURE BETWEEN 8 FEET AND 500 FEET
Lower collective Immediately
Adjust collective to keep RPM between 97 and 108 percent
Maintain airspeed until ground approached
Cyclic flare
8 ft level ship and raise collective to cushion landing
POWER FAILURE BELOW 8 FEET AGL
right pedal to prevent yawning
Allow rotorcraft to settle
Raise collective to cushion landing
MAXIMUM GLIDE DISTANCE CONFIGURATION
90 knots
90 percent rpm
Airspeed approximately 90 KIAS
Roto RPM approximately 90%
Best glide ratio is about 4.7:1 or one nautical mile per 1300 feet agl
MINIMUM RATE OF DESCENT CONFIGURATION
55 KIAS
90% rotor RPM
Airspeed approximately 55 KIAS
Rotor RPM approximately 90%
Minimum rate of descent is about 1350 feet per minute.
Glide ratio is about 4:1 or one nautical mile per 1500 feet agl
AIR RESTART PROCEDURE
Mixture- full rich
Throttle- closed, then cracked slightly
Actuate starter with left hand
EMERGENCY WATER LANDING - POWER OFF
Same procedure for power failure over land
Unlatch doors
Apply lateral cyclic when contact with water
Release seat belts
Quickly clear aircraft when rotors stop
Follow same procedures as for power failure over land until contacting water. If time permits, unlatch doors prior to water contact.
Apply lateral cyclic when aircraft contacts water to stop rotors
Release seat belt and quickly clear aircraft when rotors stop
EMERGENCY WATER LANDING- POWER ON
Hover Unlatch doors Passengers exit Fly safe distance away Switch battery off Switch alternator off Roll into overtravel spring Full collective as aircraft contacts water Lateral cyclic to stop rotors Releass seat belts Quickly clear aircraft.
Descend to hover above water
Unlatch doors
Passengers exit aircraft
Fly a safe distance from passengers to avoid possible injury by rotors.
Switch battery and alternator off.
Roll throttle off into overtravel spring
Keep aircraft level and apply full collective as aircraft contacts water.
Apply lateral cyclic to stop rotors
Release search belt and quickly clear aircraft when rotors stop.
LOSS OF TAIL ROTO THRUST IN FORWARD FLIGHT
Immediately enter autorotation Maintain at least 70 KIAS if practical Select landing site Roll throttle off into over travel spring Preform autorotation landing
LOSS OF TAIL ROTOR THRUST IN HOVER
Roll throttle off into overtravel spring
Allow aircraft to settle
Raise collective just before touch down to cushion landing.
ENGINE FIRE DURING START ON GROUND
Cranking- continue and attempt to start which would suck flames and excess fuel into engine
If engine starts, run at 60 to 70% RPM for a short time
Fuel mixture-off
Fuel valve- off
Battery switch-off
If time permits, apply rotor brake to stop rotors
Exit helicopter
ENGINE FIRE IN FLIGHT
Enter autorotation
Cabin heat- off
Cabin vent- on
If engine is running, perform normal landing, then fuel mixture off and fuel valve off
If engine stops running, fuel valve off and complete autorotation
Battery switch- off
If time permits, apply rotor brake to stop rotors
Exit helicopter.
ELECTRICAL FIRE IN FLIGHT
Battery and alternator switches- off Open cabin vents Land immediately Fuel mixture off Fuel valve off If time permits apply rotor brake to stop rotors Exit helicopter
TACHOMETER FAILURE
Use remaining tech to monitor RPM
If unsure which tach is malfunctioning or if both techs malfuncunition allow governor to control rpm
Land as soon as practical
HYDRAULIC SYSTEM FAILURE
Indicated by heavy or stiff cyclic and collective controls
Loss of hydraulic fluid may cause intermittent and or vibrating feedback in controls
HYD switch- verify on
If hydraulics not restored HYD switch- off
Adjust airspeed and flight condition as desired for comfortable control
Land as soon as practical
GOVERNOR FAILURE
Grip throttle firmly to override governor
Switch governor off
Complete flight using manual throttle control
OIL LIGHT
Indicates loss of engine power or oil pressure
Check engine tach for power loss
Check oil pressure gauge
If pressure loss is confirmed land immediately
Continued operations without oil pressure will cause serious engine damage and engine failure may occur
ENG FIRE
Indicates possible fire in the engine compartment
MR TEMP
Indicates excessive temperature of main rotor gearbox
MR CHIP
Indicates metallic particles in main rotor gearbox
TR CHIP
Indicates metallic particles in tail rotor gearbox
If light is accompanied by any indication of a problem land immediately.
LOW FUEL
Indicates approximately 3 gallons off useable fuel remaining.
The engine will run out of fuel after ten minutes at cruise power
CLUTCH
Indicates clutch actuator circuit is on, either engaging or disengaging.
Clutch light stays on longer than 10 seconds pull clutch circuit breaker.
Land as soon as practical
Reduce power and land immediately if any indications of drive system failure.
ALT LIGHT
Indicates low voltage and possible alternator failure
Turn off nonessential electrical equipment
Switch ALT off then back on
If light stays on land as soon as practical
BRAKE LIGHT
Indicates rotor brake is engaged
Release immediately in flight or before starting engine
STARTER ON LIGHT
Indicates starter motor engaged
If light does not go out when ignition switch is released from start position,
Immediately pull mixture
Turn battery switch off
Have starter motor serviced
GOV OFF LIGHT
Indicates engine RPM throttle governor is off
LOW RPM HORN AND CAUTION LIGHT
Indicate Rotor RPM may be below safe limits.
Immediately roll throttle on
Lower collective
Apply aft cyclic
Hor and caution light are disabled when collective is full down.
