Hélicoptères Guimbal
SECTION 3
CABRI G2
EMERGENCY PROCEDURES
3-9
Engine governor failure
Engine governor failure can be detected by the following :
•
Rotor/Engine speed is not regulated in green arc and throttle
extreme position is not reached,
•
Rotor/Engine speed changes in level flight,
•
If there is
a doubt, roll the twist grip slightly and check grip’s
reaction.
•
GOV light is blinking,
When it is detected :
1. Hold the twist grip firmly, and overtake the governor action,
2. Switch governor OFF,
3. Regulate Rotor/Engine speed in the middle of green arc with
twist grip,
4.
CONTINUE FLIGHT
Caution :
Always overtake the governor and stabilize NR in green arc
before any other action is taken.
EPM failures
Complete loss of EPM display:
1.
LAND AS SOON AS POSSIBLE
2. Switch NR switch to Back-up position, check green light,
3. Rotor/Engine speed is controlled by the governor and can be
checked using high and low NR warning lights.
4. Control carburetor heat manually :
▪
Select COLD position at high power,
▪
Select HOT position at low power
5. In this case, if LOW FUEL lights :
LAND IMMEDIATELY
Erratic engine / rotor speed de-synchronization :
Reduce power gradually.
If de-synchronization indication continues :
1. Refer to NR lights indicator for reliable rotor speed,
2. Switch the engine governor OFF,
3. Monitor the rotor speed in the green arc,
4.
LAND AS SOON AS POSSIBLE
If de-synchronization stops :
1. Consider the EPM is operative, and the transmission is
questionable
2. Limit power to avoid any de-synchronization reading
3.
LAND AS SOON AS POSSIBLE
4. Conduct a cautious landing, with minimum power, and gradual
power increase. Refer to procedure page 3-2.
