If you are referring from the aerospace industry, is someone who is certified on working with an aircraft (airplanes or helicopter). The "A" refers to the certification on the Airframe structure, to work on the wings, structure of the Frame or assemblies such as air vents for repairs. The "P" stands for Power Plant, The Certification repair for an Engine of a craft which also includes the hydraulic system.
of Stand, imp. & p. p. of Stand.
Postage and Packing
Patrick
Premium
p stands for "progressive"
p stands for "progressive"
Polarized
Yes, but it is not airworthy until it has been checked and certified by a licensed A&P mechanic (Airframe & Powerplant).
Phillip
P = Phosphorous
stands for "PREPARATION"
The P in PIN stands for personal.