直升機飛行員手冊直升機操作手冊 The Helicopter Pilot’s Handbook

時間：2011-04-05 11:37來源：藍天飛行翻譯 作者：航空 點擊：次

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CHIP MGB Metal particles in MGB Reduce power, monitor MGB.P and MGB.T lights. If either illuminate, refer to appropriate column
FUEL You have less than 15.8 US gals. If fuel is low, avoid large attitude changes. About 18 minutes’ level flight at max continuous power.
FUEL.P Pressure lower than .2 bar, either or both pumps. If fuel pressure normal, one pump has failed, so continue. If zero, both have, keep below 5000 ft.
FIRE See above
PITOT Pitot system not energised Check pushbutton, monitor ASI
HYD Servo system failure Do not depress HYD Test button – depressurises the accumulator. Calmly reduce collective and speed to between 40-60 kts. Cut off hydraulic press with button on collective. Make flat approach and land, slight forward speed.
MGB.P Main gearbox oil at min pressure Reduce power, land ASAP
MGB.T Main gearbox oil max temperature Test caution panel to check light. If it does not come on, treat as oil pressure is zero. if it does, land and check oil level. You can fly to the nearest base if the level is normal.
BAT T Battery is at maximum temperature Isolate the battery (pushbutton off) and land ASAP
ENG P Engine oil pressure Reduce power and check indicator. If pressure is low or 0, check torquemeter – shut down the engine if it

Engine Relighting
Light Problem Action
is very low, and land immediately if it is normal. If pressure and torquemeter are normal, land ASAP.
GEN Either a DC supply failure or an overvoltage has been detected. Test the DC voltage. Check the position of the pushbutton, then attempt to reset. If unsuccessful, loadshed and continue, ensuring you get at least 22 volts, and bearing in mind altitude limits when fuel booster pumps are off. Expect about 50 minutes from the battery by day, and 20 by night.
BAT Batt isolated from DC– not charging. Check the pushbutton (on) and keep an eye on the voltage.
HORN Horn not set Actuate pushbutton on control pedestal panel.
DOORS One or both bge doors unlocked. Reduce airspeed to below 138 mph. Land carefully.
ENG CHIP Metal in engine oil. Land ASAP.

The normal ceiling is 13000 feet, but you can try above this.
No Item Action
1 Booster On Pumps
2 Generator On
3 Engine NG below 30% to avoid jerks on resynchronisation

Fuel Flow Rate Drop
Symptoms are as for engine failure, with the exception that NG stabilises at a low rate (less than 70%) after a few seconds. When this happens, establish autorotation and advance the fuel flow control into the emergency sector. You should get a rise in NG and T4. Keep the engine speed at 70% and increase collective if necessary to bring the rotor speed to 350 RPM. Then increase the fuel flow till the rotors are running at 380 RPM – trim collective and fuel flow for level flight at this speed.

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