airworthiness · Rule · Final rule. · Published 2021-11-24 · Effective 2021-12-29 · 86 FR 66945
Document
Document number
2021-25534
Federal Register citation
86 FR 66945
Type
Rule
Action
Final rule.
Category
airworthiness
Manufacturer
Airbus SAS
Publication date
2021-11-24
Effective date
2021-12-29
FAA docket
Docket No. FAA-2021-0545
Abstract
The FAA is adopting a new airworthiness directive (AD) for all Airbus SAS Model A350-941 and -1041 airplanes. This AD was prompted by a report of a broken forward guide arm found during a passenger door emergency opening test. Investigation results indicated that the opening speed of the door was higher than expected, likely caused by a reduced damping due to oil leakage of the passenger door damper emergency opening actuator (DEOA). This AD requires repetitively replacing certain forward and aft guide arms on the passenger door, inspecting the forward and aft guide arm support brackets for damage, modifying certain DEOAs, and repairing damage if necessary, and also provides an optional terminating action for the repetitive replacements, as specified in a European Union Aviation Safety Agency (EASA) AD, which is incorporated by reference. The FAA is issuing this AD to address the unsafe condition on these products.