Cessna 401 — Service Bulletins

This service bulletin, issued by AmSafe Inc., addresses the AmSafe Seatbelt Airbag System's inflator assemblies for the Cessna 401. It extends the service and storage life of specific inflator assemblies from 10 years to 12 years, based on substantiating data. The bulletin applies to various AmSafe part numbers and provides detailed instructions for compliance. Operators are encouraged to complete the service at the earliest opportunity when resources are available. The bulletin does not require FAA approval as it does not modify the approved configuration of the aircraft.

• The service life of inflator assemblies is extended from 10 years to 12 years.
• Affected AmSafe part numbers include 507592-401, 508792-401, 510385-401, 508794-401, 508793-401, and 508795-401.
• Operators should complete the service bulletin at the earliest opportunity when resources allow.
• No FAA approval is required as the bulletin does not change the approved configuration.
• Accessing the inflator assembly may require a mirror to read the part number.