Today’s Aeronautical Maintenance Terms

An insulation material based on the polyolefin family that has its normally thermomelt characteristic altered by the radiation cross-linking process to that of a nonmelt, therm-set material.
[Source Acceptable Methods Techniques, and Practices—Aircraft Inspection and Repair]

A sonic venturi in a line between a turbine engine or turbocharger and a pressurization system. When the air flowing through the sonic venturi reaches the speed of sound, a shock wave forms across the throat of the sonic venturi and limits the flow. A sonic venturi is also called a flow limiter.
[Source FAA-H-8083-30B AMT Airframe Handbook]

A measure of power equal to 550 foot-pounds per second or 33,000 foot-pounds per minute and 746 Watts.
[Source FAA-H-8083-30B AMT General Handbook]

A spring in the elevator control system that produces a mechanical force that tries to lower the elevator. In normal flight, this spring force is overcome by the aerodynamic force from the elevator trim tab. But in slow flight with an aft CG position, the trim tab loses its effectiveness and the downspring lowers the nose to prevent a stall.
[Source FAA-H-8083-30B AMT Airframe Handbook]

Foreign Object Damage
[Source Acceptable Methods Techniques, and Practices—Aircraft Inspection and Repair]

Selective Calling System
[Source Acceptable Methods Techniques, and Practices—Aircraft Inspection and Repair]