CESSNA
SECTION 3
MODEL 172S NAV III
EMERGENCY PROCEDURES
KAP 140 AUTOPILOT
U.S.
ROUGH ENGINE OPERATION OR LOSS OF POWER
(Continued)
ENGINE-DRIVEN FUEL PUMP FAILURE
Failure of the engine-driven fuel pump will be shown by a sudden
reduction in the fuel flow indication (FFLOW GPH)
immediately before
a loss of power
while operating from a fuel tank containing adequate
fuel.
If the engine-driven fuel pump fails, immediately set the FUEL PUMP
switch to the ON position to restore the engine power. The flight should
be terminated as soon as practical and the engine-driven fuel pump
repaired.
EXCESSIVE FUEL VAPOR
Fuel vapor in the fuel injection system is most likely to occur on the
ground, typically during prolonged taxi operations, when operating at
higher altitudes and/or in unusually warm temperatures.
Excessive fuel vapor accumulation is shown by fuel flow indicator
(FFLOW GPH) fluctuations greater than 1 GPH. This condition, with
leaner mixtures or with larger fluctuations, can result in power surges,
and if not corrected, may cause power loss.
To slow vapor formation and stabilize fuel flow on the ground or in the
air, set the FUEL PUMP switch to the ON position and adjust the
mixture as required for smooth engine operation. If vapor symptoms
continue, select the opposite fuel tank. When fuel flow stabilizes, set
the FUEL PUMP switch to the OFF position and adjust the mixture as
desired.
172SPHAUS-05
3-33
For
Training
Purposes
Only
Содержание Cessna 172S NAV III Skyhawk SP
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