9.22.7 MAIN XMSN OIL PRESS Caution Legend On/XMSN OIL PRESS LOW/XMSN OIL TEMP HIGH or XMSN OIL TEMP Caution Legend On. Loss of cooling oil supply will lead to electrical and/or mechanical failure of main generators. If the malfunction is such that oil pressure decays slowly, the generators may fail before MAIN XMSN OIL PRESS caution legend goes on.
1. LAND AS SOON AS POSSIBLE.
If time permits:

2.
Slow to 80 KIAS.

3. EMER APU START.

4.
GENERATORS NO. 1 and NO. 2 switches -OFF.

9.22.8 CHIP INPUT MDL LH or RH Caution Legend On.

1. ENG POWER CONT lever on affected engine -IDLE.

2.
LAND AS SOON AS POSSIBLE.

9.22.9 CHIP MAIN MDL SUMP, CHIP ACCESS MDL LH or RH, CHIP TAIL XMSN or CHIP INT XMSN/ TAIL XMSN OIL TEMP or INT XMSN OIL TEMP Cau-tion Legend On.
LAND AS SOON AS POSSIBLE.
9.23 FIRE.

If AC electrical power is not available, only the reserve .re bottle can be dis-charged and .re extinguishing capability for the #2 engine will be lost.
The safety of helicopter occupants is the primary con-sideration when a .re occurs; therefore, it is imperative that every effort be made to extinguish the .re. On the ground, it is essential that the engine be shut down, crew and pas-sengers evacuated, and .re .ghting begun immediately. If time permits, a 9May Day9 radio call should be made before the electrical power is OFF to expedite assistance from .re-.ghting equipment and personnel. If the helicopter is air-borne when a .re occurs, the most important single action that can be taken by the pilot is to land. Consideration must be given to jettisoning external stores and turning FUEL BOOST PUMPS and XFER PUMPS off prior to landing.

9.23.1 Engine/Fuselage Fire On Ground.

1. ENG POWER CONT levers -OFF.

2.
ENG EMER OFF handle -Pull if applicable.

3.
FIRE EXTGH switch -MAIN/RESERVE as required.

9.23.2 APU Compartment Fire.

1.  
APU .re T-handle -Pull.

2.  
FIRE EXTGH switch -MAIN/RESERVE as required.

9.23.3 APU OIL TEMP HI Caution Legend On.
APU CONTR switch -OFF. Do not attempt restart until oil level has been checked.
9.23.4 Engine Fire In Flight.

Attempt to visually con.rm .re before en-gine shutdown or discharging extinguish-ing agent.

1. ENG POWER CONT lever (affected engine) -OFF.

2.
ENG EMER OFF handle -Pull.

3.
FIRE EXTGH switch -MAIN/RESERVE as required.

4.
LAND AS SOON AS POSSIBLE.

9.23.5 Electrical Fire In Flight. Prior to shutting off all electrical power, the pilot must consider the equipment that is essential to a particular .ight environment which will be affected, e.g., .ight instruments, .ight controls, etc. If a landing cannot be made as soon as possible the affected
TM 1-1520-253-10
circuit may be isolated by selectively turning off electrical equipment and/or pulling circuit breakers.

1. BATT and GENERATORS switches -OFF.

2.
LAND AS SOON AS POSSIBLE.

9.24 SMOKE AND FUME ELIMINATION.
Smoke or fumes in the cockpit/cabin can be eliminated as follows:
1.
Airspeed -80 KIAS or less.

2.
ECS panel switches -OFF.

3.
Cabin doors -Open.

4.
LAND AS SOON AS PRACTICABLE.

9.25 FUEL SYSTEM.

9.25.1 #1 or #2 FUEL FLTR BYPASS Caution Leg-end On.

1. ENG FUEL SYS selector on affected engine -XFD.

2.
LAND AS SOON AS PRACTICABLE.

9.25.2 #1 and #2 FUEL FLTR BYPASS Caution Legends On.
LAND AS SOON AS POSSIBLE.
9.25.3 #1 FUEL LOW and #2 FUEL LOW Caution Legends On.
LAND AS SOON AS PRACTICABLE.
9.25.4 #1 or #2 FUEL PRESS Caution Legend On.
a. If the legend illuminates, .ameout is possible. Do not make rapid collective movements. This emergency proce-dure has been written to include corrective action for criti-cal situations. Critical situations are those where the loss of an engine represents a greater hazard than the possibility of pressurizing a fuel leak.
　
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