Cessna 402C - Page 67

SECTION 3
EMERGENCY PROCEOUR~S
(AMPLIFIED PROCEDURES)
I
FUEL SYSTEM EMERGENCY PROCEDURES
ENGINE-DRIVEN FUEL PUMP FAILURE
I. Fuel Selector - MAIN TANK (Feel For Detent).
2. Auxiliary Fuel Pump - ON.
3. Mixture - FULL RICH. Adjust fuel flow to coincide with power
setti ng.
4. Cowl Flap - AS REQUIRED.
5. As Soon as Practical - LAND.
6. Crossfeed is unusable if the other engine is operating.
r---------
NOTE
-------....,
If both an engine-driven fuel pump and an auxiliary
fuel pump fail on the same side of the airplane, the
failing engine cannot be supplied with fuel from the
opposite main tank since that auxiliary fuel pump
wil 1 operate on the low pressure setting as long as
the corresponding
engine-driven fuel pump is opera-
tive.
ELECTRICAL SYSTEM EMERGENCY PROCEDURES
ALTERNATOR FAILURE (Single)
Indicated By Illuminatian 01 1 Failure Light
1. Electrical Load - REDUCE.
2. If Circuit Breaker is tripped:
a. Turn off affected alternator.
b. Reset affected alternator circuit breaker.
c. Turn
on affected alternator switch.
d. If circuit breaker reopens, turn off alternator.
3. If Circuit Breaker does not trip:
a. Select affected alternator on voltamrooter and IOOnitor output.
b. If output is normal and failure light remains on, disregard
fa;l i ndi ca ti on and have indi ca tor checked after la ndi ng.
c. If output is insufficient, turn off alternator and reduce
electrical load to one alternator capacity.
d. If complete loss of alternator output occurs, check field fuse
and replace if necessary. Spare fuses are located on the left
side console forward of the field fuses.
e. If an intennittent light indication accompanied by voltamrooter
fluctuation is observed, turn off affected alternator and
reduce load to one alternator capacity.
f. Restrict load on remaining alternator to 80% of the rated load.
ALTERNATOR FAILURE (Dual)
Indicated By Illumination Of Failure Light
1. Electrical Load - REDUCE.
2. If Circuit Breakers are tripped:
a. Turn off alternators.
b. Reset circuit breakers.
c. Turn on left alternator and IOOnitor output on voltammeter.
d.
If alternator is charging, leave it on. Disregard failure
light if still illuminated.
e. If still inoperative, turn off left alternator.
f. Repeat steps c through e for right alternator.
g. If circuit breakers reopen, prepare to terminate flight.
1 November 1979
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