Auxiliary power unit. A small turbine powered combination electrical generator
and hydraulic pump permanently installed in the aircraft.
A thin head open end wrench with only one opening and short tapered handle.
Normally used on hose and tube fittings.
A manually operated lever located on top of extended range fuel system (ERFS)
fuel tank, linked mechanically to operate fuel dump valve located at bottom of
A type of quick release latch or fastener.
Spring loaded discs built into hose couplings which close automatically when
couplings are separated, thus preventing fuel spillage. Fuel is field captive in
The design of an aircraft's fuel system to sustain crash damage with fuel
A line or mark on hose fittings used as a guide in establishing length bulk hose.
Electrical control panel.
A design principle used by the ERFS low fuel pressure sensing system.
Absence of fuel in pump lines causes a change in light pattern detected by
optical sensor which is translated into an electrical output.
Extended range fuel system.
A metal strip or bar formed with a consistent cross section during manufacturing.
Forward air refueling equipment.
Lowest temperature at which liquid will give off sufficient vapor to ignite upon
application of flame or spark.
Fuel management control panel.
Helicopter internal cargo handling system.
An undesirable crimp, twist, or sharp bend in a hose causing restriction of fluid or
The internally threaded end fitting of a hose or piece of rigid tubing.