What is the cause and procedure for a ROTOR LOW RPM light?
- Rotor RPM is below normal (approximately 90%)
- Reduce collective pitch and check throttle is full open
What is the cause and procedure for a TRANS PRESS light?
- Main transmission pressure is below minimum, check gauge
- Landing should be made as soon as possible
What is the cause and procedure for a TRANS TEMP light?
- Main transmission oil temperature is at or above red line, check gauge
- Reducing power will help alleviate the condition
- Check transmission oil pressure
- Land as soon as possible
What is the cause and procedure for a BATTERY RLY light?
- Battery will not drop off line when the battery switch is turned to OFF position
- Land as soon as possible if battery HOT light illuminates
What is the cause and procedure for a ENG CHIP light?
- Metallic particles in engine oil
- Land as soon as possible
What is the cause and procedure for a TRANS CHIP light?
- Metallic particles in transmission oil
- Land as soon as possible
What is the cause and procedure for a T/R CHIP light?
- Metallic particles in tail rotor gear box oil
- Land as soon as possible
What is the cause and procedure for a FUEL LOW light?
- Approximately 60 to 70 pounds (10 gal) of fuel remaining
- land as soon as practical
- Avoid uncoordinated flight as fuel starvation may occur
What is the cause and procedure for a FUEL FILTER light?
- Airframe fuel filter clogged
- Land as soon as possible
- Clean before next flight
What is the cause and procedure for a R/FUEL PUMP light?
- Right pump of duel boost pump assembly has failed
- Descend to below 6000 feet altitude if fight permits
- Land as soon as practical
- Repair pump prior to next flight
What is the cause and procedure for a L/FUEL PUMP light?
- Left pump of fuel boost pump assembly has failed
- Descend to below 6000 feet altitude if fight permits
- Land as soon as practical
- Repair pump prior to next flight
What is the procedure for both fuel pump failure?
- Both fuel boost pumps shall be operating for normal flight conditions
- If both fuel boost pumps fail, altitude must be reduced below 6000 feet pressure altitude
- Unusable fuel may be as high as 155 pounds due to inability to transfer fuel from the forward cells
- Land as soon as possible
What are the indications of a hydraulic failure?
- The first indication of hydraulic boost failure will be an increase in force for control movement; feed-back forces will be noticed as well as rate limiting
- Control motions will result in normal flight reactions in all respects, except for the increased force required for control movements
What is the procedure for hydraulic system failure?
- Reduce airspeed 70 to 80 MPH
- Hydraulic control circuit breaker - OUT. If power not restored, push breaker IN
- Hydraulic control switch - ON; OFF if power is not restored
- Land as soon as practical and investigate
- A run-on landing at 5 to 10 mph is recommended
What is the indication for a generator failure?
Evidence of main generator failure will be provided by observing load-meter load
What is the procedure for a generator failure?
- Cycle generator switch - If power is not restored - switch OFF
- Left hand fuel boost circuit breaker - Check In
- All other electrical equipment - OFF (to conserve battery)
- Altitude must be reduced below 6000 feet prior to battery depletion due to the inability to transfer fuel from the forward cells
How long will the left hand fuel pump operate on the battery alone if all other systems are off?
The battery, when 80% charged, will operate the left hand fuel boost pump approximately 2.4 hours to transfer fuel from the forward cells and maintain the helicopter within the CG limits
What are the symptoms of an electrical bus failure?
Electrical bus failure will be indicated by one or more of these conditions: smoke, odor and total electrical loss
What is the procedure for an electrical bus failure with one or more of: smoke, odor and total electrical loss?
- Battery switch - OFF
- Generator switch - OFF
- L/H Fuel Boost circuit breaker - Check IN
- Fuel Valve switch - ON
What is the procedure for and engine air start?
- Reduce forward speed to desired autorotative airspeed (52 to 63 mph)
- Generator - OFF
- Perform a normal engine start procedure
CAUTION: Do not attempt air start above 12,000 feet - TOT rises too fast to control
What will cause an intermittent or steady audio signal?
- Engine out warning system activates an intermittent audio signal (N1 < 55%)
- Low rotor warning system activates a steady audio signal (Nr < 90%)
What should be done if engine oil pressure is below minimum or above maximum?
Land as soon as possible
What should be done if engine oil pressure fluctuates but does not exceed a limit?
Monitor engine oil pressure and temperature, and land as soon as practical
What should be done if engine oil temperature is high?
Land as soon as possible
