The curriculum

Glossary

2,678 terms. Where the regulation defines a term (14 CFR 1.1 and 1.2, 280 of them), its definition is quoted word for word, and it governs. The FAA handbooks' definitions follow as guidance, each with the page of the handbook that prints it.

Q

Quick-disconnect fitting

A hydraulic line fitting that seals the line when the fitting is disconnected. Quick-disconnect fittings are used on the lines connected to the engine-driven hydraulic pump. They allow the pump to be disconnected and an auxiliary hydraulic power system connected to perform checks requiring hydraulic power while the aircraft is in the hangar.

Aviation Maintenance Technician Handbook — Airframe, p. G-27

Quill shaft

A type of shaft used to couple parts of an engine that are subject to torsional loads. A quill shaft is a long, hardened steel shaft with splines on each end. One end splines into the drive shaft and the other end splines into the device being driven. Torsional vibrations are absorbed by the quill shaft twisting.

Aviation Maintenance Technician Handbook — Powerplant, p. G-22

Sources
14 CFR 1.1
14 CFR 1.1, General definitions
14 CFR 1.2
14 CFR 1.2, Abbreviations and symbols
AMTG
FAA-H-8083-30B, Aviation Maintenance Technician Handbook — General
AMTA
FAA-H-8083-31B, Aviation Maintenance Technician Handbook — Airframe
AMTP
FAA-H-8083-32B, Aviation Maintenance Technician Handbook — Powerplant
W&B
FAA-H-8083-1B, Aircraft Weight and Balance Handbook
HFH
FAA-H-8083-21B, Helicopter Flying Handbook
PHAK
FAA-H-8083-25C, Pilot's Handbook of Aeronautical Knowledge

The glossary is CC BY-SA 4.0 as an arrangement; the quoted regulation text is a work of the US Government. Handbook definitions are quoted from the FAA's handbooks, each linked to the FAA's own copy.