aircraft noise certificate

aircraft airworthiness certificate

aircraft certificate

aircraft certificate holder

noise floor; noise level

aircraft noise production program

working group on aircraft noise

non-noise certificated aircraft

aircraft noise

aircraft noise abatement

aircraft noise and design effects study (ANDES)

aircraft noise annoyance

aircraft noise certification

aircraft noise design effects study

aircraft noise pollution

aircraft noise prediction program(me)

aircraft noise received on the ground

aircraft noise stringency

methods of aircraft noise measurements

model for assessing global exposure to the noise of transport aircraft (MAGENTA)

certificate or waiver of authorization

volunteer certificate

handover certificate

Air Defense Command Commendation Certificate

acceptance certificate

crew member certificate

issue a certificate

certificate holder

certificate of compliance

certificate of quality

certificate of revaccination

certificate of safety for flight

certificate of type