Section X ENGINE TESTING (Continued)
1-93 GENERAL (Cont)
Propeller Windmilling. Propeller must be
restrained from windmilling when aircraft is not in use.
Windmilling, with zero oil pressure, can cause power
Engine Exhaust. At takeoff power settings, the
propeller may pick up and throw loose dirt, gravel, and
Precautionary measures must be taken during the
ground running of engines to avoid injury to personnel
and damage to property of other aircraft. Occasionally,
during the starting of a turbine engine, excess fuel
accumulates in the exhaust ducting, and when ignited,
causes long flames to be blown from the exhaust stubs.
Personnel must insure that the run-up area is clear of
inflammable materials and ground equipment.
Continuous exposure to noise can be
harmful to hearing. Ear plugs should
be used during all engine operations.
Exhaust Gases. The carbon monoxide content
of exhaust gases is relatively low, but other gases are
present which have a disagreeable odor and are
irritating in effect. Exposure normally results in watering
of the eyes, accompanied by a burning sensation. Less
noticeable, but equally hazardous, is the possibility of
respiratory irritation. For both these reasons, exposure
should be avoided whenever possible, particularly in
Cool Down. After engine operation, allow
sufficient cool down time before inspecting or working
on the exhaust case.
Prolonged contact with Lubricating Oil
(E.2) or .(E.71) may cause skin rash.
Those areas of skin and clothing that
come in contact with lubricating oil
Areas in which lubricating oil is used
should be adequately ventilated to
keep mist and fumes to a minimum.
Lubricating Oil (E.2) and (E.71) may
lubricating oil is spilled on painted
surfaces, these surfaces should be
thoroughly washed with Petroleum
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