Hydraulic Fluid Servicing. Hydraulic fluid
servicing precautions are explained in the following
To avoid contamination, do not use
previously opened cans of hydraulic
fluid. A new sealed can of fluid must
be opened and used. When opening
can, clean top, and use a clean
Do not overfill reservoir or spill fluid in
surrounding areas. When fluid is spilled, absorb with
When filling reservoirs, extreme care shall be
taken to ensure that no dirt or foreign matter enters the
Refer to applicable aircraft maintenance
instructions. Use only specified hydraulic fluid.
Pneumatic System Servicing. Safety precautions
for servicing pneumatic reservoirs are contained in the
Never use pressure oxygen to inflate gear
shock struts, pressure accumulators, etc.
Use only clearly labeled compressed air
cylinders or compressed air hoses of known origin.
Ensure that locking mechanism on aircraft
valve stem is engaged prior to installing hose to valve
stem. Always engage locking mechanism after servicing.
Fill system slowly to reduce heat generated
by filling too rapidly.
Exercise care not to overcharge the system.
removing a component from the system.
3-10. Engine Operation. For operation and specific
instructions on a particular fixed or rotary wing Army
aircraft, refer to the applicable maintenance manual.
Safety procedures and general operating procedures for
reciprocating and turbine engines are contained in the
Safety Procedures. Safety procedures prior
to starting, during starting, during engine operation, and
after operating engines are covered in the following
Safety procedures prior to starting. The
following safety procedures should be accomplished prior
Head aircraft so that exhaust
blast is directed to least inhabited areas.
Place approved chocks fore and
aft of main landing gear wheels.
Clear aircraft and surrounding
areas of covers, tools, rags, work stands etc , and remove
Secure access doors by closing
or removing prior to ground testing turbine-powered
Do not allow personnel on any
external portion of an aircraft during engine start or
Station ground crew member,
equipped with a carbon dioxide or equivalent fire
extinguisher to one side and forward of engine being
started. This crew member will observe for fire and fire
hazards, such as fuel from overflow lines, fuel/oil leakage,
chock slippage, and other irregular conditions.
If aircraft utility fire extinguisher is
utilized for an engine start, another
fire extinguisher, rated capacity of
10-B or more, will be located within
50 feet of all fixed or rotary wing
Army aircraft. Fire fighting capability
must be maintained.
If ground crewmember does not have
radio communication, he must stand
in view of aircraft operator.
responsible ground crewmember off to one side, away
from danger areas, and aft of operating turbine powered
aircraft, to warn approaching traffic. Use a danger flag