Airworthiness Directives; The Boeing Company Airplanes
airworthiness · Rule · Final rule; request for comments. · Published 2020-08-11 · Effective 2020-08-26 · 85 FR 48465
Document
Document number
2020-17469
Federal Register citation
85 FR 48465
Type
Rule
Action
Final rule; request for comments.
Category
airworthiness
Manufacturer
The Boeing Company
Publication date
2020-08-11
Effective date
2020-08-26
FAA docket
Docket No. FAA-2020-0684
Abstract
The FAA is adopting a new airworthiness directive (AD) for all The Boeing Company Model 737-300, -400, -500, -600, -700, -700C, -800, -900, and -900ER series airplanes. An emergency AD was sent to all known U.S. owners and operators of these airplanes. This AD requires inspections of the engine bleed air 5th stage check valve on each engine, and replacement of the engine bleed air 5th stage check valve if any inspection is not passed. This AD was prompted by four recent reports of single-engine shutdowns due to engine bleed air 5th stage check valves being stuck open. The FAA is issuing this AD to address the unsafe condition on these products.