Airworthiness Directives; The Boeing Company Airplanes
airworthiness · Rule · Final rule. · Published 2021-07-30 · Effective 2021-09-03 · 86 FR 40927
Document
Document number
2021-16174
Federal Register citation
86 FR 40927
Type
Rule
Action
Final rule.
Category
airworthiness
Manufacturer
The Boeing Company
Publication date
2021-07-30
Effective date
2021-09-03
FAA docket
Docket No. FAA-2020-0333
Abstract
The FAA is adopting a new airworthiness directive (AD) for all The Boeing Company Model 737 airplanes powered by LEAP-1B engines. This AD was prompted by reports of inadvertent release of the spring energy of the spring door opening system (SDOS) actuator with a certain part number, causing injury and the potential for injury to maintenance personnel. This AD requires replacing each affected SDOS actuator with a new SDOS actuator, and verifying that new safety markers are installed in the proper locations. The FAA is issuing this AD to address the unsafe condition on these products.