Defining the Language of Aviation
The Precision Obstacle Free Zone – POFZ is a section of airspace above an area beginning at the runway threshold, at the threshold elevation, and centered on the extended runway centerline. The standard Precision Obstacle Free Zone – POFZ is 200 feet (60 meters) long and 800 feet (240 meters) wide. The POFZ must be [...]
Hinged portion of the trailing edge between the ailerons and fuselage. In some aircraft, ailerons and flaps are interconnected to produce full-span “flaperons.” In either case, flaps change the lift and drag on the wing. The plain or hinge flap is a hinged section of the wing. The structure and function are comparable to the other control [...]
Heavy Maintenance – Heavy Maintenance is any maintenance, inspection, repair, or alteration a manufacturer has designated that requires specialized training, equipment, or facilities.
Hydraulic Ground Power Unit – Hydraulic power units, sometimes called a hydraulic mule, provide hydraulic pressure to operate the aircraft systems during maintenance. They can be used to: • Drain the aircraft hydraulic systems. • Filter the aircraft system hydraulic fluid. • Refill the aircraft system with clean fluid. • Check the aircraft hydraulic systems [...]
Manufacturer’s Maintenance Manual – A manual provided by an aircraft manufacturer that outlines the methods, techniques, and practices prescribed for each person performing maintenance, alteration, or preventive maintenance on an aircraft, engine, propeller, or appliance. Also referred to as an AMM (Aircraft Maintenance Manual)
MRO – MRO is an Aviation Term defined as “Maintenance and Repair Organization”
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