24-Nov-2015 Source: FAA
This Special Airworthiness Information Bulletin (SAIB) advises general aviation pilots and operators of concerns with the use of noise cancelling headsets. In many cases, pilots are using the noise cancelling headsets as supplementary equipment during operations. When wearing these headsets, the pilot may be unaware of environmental sounds and audible warning annunciations in the cockpit that do not come through the intercom system.
At this time, the airworthiness concern is not considered an unsafe condition that would warrant airworthiness directive (AD) action under Title 14 of the Code of Federal Aviation Regulations (14 CFR) part 39.
Background
The FAA issued Information for Operators (InFO) 07001 on January 5, 2007, to recommend that operators, directors of operations, chief pilots, and crewmembers of aircraft should evaluate their use of noise cancelling headsets.
Many general aviation pilots and operators may be unaware of the safety information presented in InFO 07001.
Recommendations
The FAA recommends that general aviation pilots and operators do the following:
See also this page