20-133 - Cockpit Noise and Speech Interference Between Crewmember
- Date Issued
- March 22, 1989
- Responsible Office
- AIR-130, Aviation Safety - Aircraft Certification Service, Aircraft Engineering Division
- Provides information about the relationship between flight crew members cockpit voice communication and cockpit noise levels. Guidance, on speech interference levels, noise measurement and measurement systems, and methods to improve cockpit communication, is provided for those manufacturers, owners or operators who believe cockpit noise may be a problem on their aircraft. This guidance material is relevant to the operation of all types of civil aircraft.
- AC20-133.pdf (PDF, 2.7 MB)