· Starting oil pressure may exceed
standard oil pressure gauge limits.
This condition is not considered
remains high. Takeoff should be
delayed until oil pressure drops with
range, as specified in applicable
· A hot start occurs when the engine
temperature exceeds specified limits.
excessively rich fuel air mixture
entering the combustion chamber.
The fuel to the engine should be
shut off immediately.
· False or hung starts occur when the
engine starts normally but the rpm
remains at some low value rather
starting rpm. This is often the result
of insufficient power to the starter, or
the starter cutting off before the
engine starts self-accelerating. In
this case, the engine should be shut
Ground checks. To ensure proper
operation, perform the following procedures before taxiing
Inspect all aircraft systems and
surfaces, with emphasis on systems and surfaces directly
affected by low temperatures.
Inspect controls and trim tabs for
freedom of movement.
Do not apply heat directly or too
cracking, crazing, and discoloration.
Inspect cabin heat, defrosting,
and anti-icing systems.
equipment. Cycle system several times if sluggish
operation is evident.
Shutdown. Shut down turbine
engines in accordance with the applicable maintenance
3-11. Runup and Taxiing. Nonrated personnel who
start, run, warmup test, taxi or otherwise operate aircraft
on the ground will be fully qualified, demonstrate
satisfactory ability, and be authorized to perform such
duties, in accordance with AR 95-1. Nonrated personnel
cannot run up rotary wing aircraft under any condition.
General safety procedures, taxiing, and postflight and
parking are covered in the following paragraphs.
procedures for runup and taxiing are provided in the
attempting an engine runup.
Check runup area carefully to prevent
propeller or jet blast from throwing ice and snow on other
Some instruments will give erroneous
readings due to cold. These readings
can be compensated for or corrective
action may be taken. For specific
instruments and their characteristics,
adequate guidance when aircraft is maneuvered close to
other aircraft, buildings, or obstructions, or in gusty or high
Check that brakes are not frozen, and
that aircraft will roll before attempting to taxi from parking
Free tires that have become frozen to
surface by application of heat or over-inflation. Do not
allow heat to exceed 160 °F (71°C).
Immediate freeing action cannot be
expected from tires that have been
over-inflated. A time period of one-
half to one hour may be necessary
for tires to become free.