Lden/Lnight

Lden/Lnight

day-evening-night/night-time average sound level

More lexicon entries

Term Definition
WG

working group

NCC

non-commercial air operations with complex motor-powered aircraft

FMEA

failure modes and effects analysis

CS-Definitions

Definitions and abbreviations used in the Certification, Specifications for Products, Parts and Appliances

PDR

Preliminary Design Review

AWOSG

All Weather Operations Steering Group (JAA)

UAS

unmanned aircraft system

ISA

International Standard Atmosphere

UPRT

upset prevention and recovery training

LAPL

light aircraft pilot licence

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