- Joint Aviation Authority.
JAR - Joint Aviation Requirements, being drawn up by eighteen
European states, aimed at unifying airworthiness, flight crew
licensing and other criteria among signatory nations.
JAWG - Joint Airmiss Working Group. A civilian/military
committee which reviews and reports on all air-misses which occur in UK
Jeppesen - U.S.-developed navigational/approach chart system
with worldwide coverage, similar to British Aerad system.
JPATS - Joint Primary Aircraft Training System. A USAF/U.S.
Navy programme to select a common aircraft design as a basic pilot
trainer for the two services, due to be decided next year.