Accession Number:

AD0258320

Title:

TRANSPORT AIRCRAFT COCKPIT VOICE RECORDING

Descriptive Note:

Corporate Author:

NATIONAL AVIATION FACILITIES EXPERIMENTAL CENTER ATLANTIC CITY N J

Personal Author(s):

• JEFFERSON,F.W.

Report Date:

1960-12-01

Pagination or Media Count:

1.0

Abstract:

Tests were conducted utilizing three aircraft, a C-131, a DC-3, and a Grumman Gulfstream, to determine the most desirable method for recording crew conversations as an aid to accident investigation. Currently available area and individual pickup-type microphones were employed. The application of electronic noise-filtering and noise-cancelling techniques was investigated for improving the intelligibility of the recorded voice. It was concluded that the recording of crew conversation in transport aircraft utilizing area pickup-type microphones is feasible. Author

Descriptors:

• *ACOUSTICS
• *AVIATION ACCIDENTS
• *INTERCOMMUNICATION SYSTEMS
• *RECORDING SYSTEMS
• *TRANSPORT AIRCRAFT
• *VOICE COMMUNICATIONS
• AIRBORNE
• AVIATION PERSONNEL
• CIVIL AVIATION
• COCKPITS
• EARPHONES
• FLIGHT TESTING
• HUMAN FACTORS ENGINEERING
• INTELLIGIBILITY
• MAGNETIC TAPE
• MICROPHONES
• NOISE
• REDUCTION

Subject Categories:

Distribution Statement:

APPROVED FOR PUBLIC RELEASE