HEAT EXCHANGER

COIL, a metallic component with a plurality of passageways through which passes the liquid or air for cooling or heating.

HERTZ (Hz)

HERTZ (Hz), a unit of frequency.

HORIZONTAL STABILIZER

Horizontal stabilizer, moving horizontal surfaces on the tail that is used to trim the pitch.

HOT BATTERY BUS

HOT BATTERY BUS, bus battery, which is not disabled and are always powered by batteries (rechargeable) aircraft.

HONEYCOMB

Honeycomb, hexagonal type of material made of metal or NOMEX for precast panels (a sandwich).

HYDRAULIC FUSE

Hydraulic protection device in the hydraulic system to stop flow of fluid when there is a leak in the lines located beyond the fuse.

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