General Aviation Glossaries

Abbreviations

TermDefinition in EnglishDefinición en ÉspañolElaboration
GPUGround Power UnitUnidad de potencia terrestreA piece of ground support equipment that supplies electrical power to an aircraft while its engines are off.
Tug
Pushback
Tail Stand
Tow Bar
Towbarless Tractor
Chock
ULD
Baggage Cart
Airport Dolly
Signal Wands
Reflective Clothing
OSHA
OSHA Clothing
Personnel Van
Jet Bridge
N2
  • High-pressure spool speed: N2 represents the rotational speed of the engine's core, or high-pressure spool, as a percentage of its maximum RPM.
  • Engine core: The N2 spool consists of the high-pressure compressor, the combustion chamber, and the high-pressure turbine.
  • Engine accessory power: N2 also indicates if engine-driven systems like hydraulic pumps, fuel pumps, and electrical generators are receiving enough power to operate.