Summary
The FAA is adopting a new airworthiness directive (AD) for certain The Boeing Company Model 787-8 and 787-9 airplanes. This AD was prompted by reports that the cabin air compressor (CAC) outlet check valve failed due to fatigue of the aluminum flappers, and exposed the Y-duct to temperatures above its design limit. This AD requires installing new inboard and outboard CAC outlet check valves on the left-side and right-side cabin air conditioning and temperature control system (CACTCS) packs. The FAA is issuing this AD to address the unsafe condition on these products.
Directive Details
AD Number
FAA-2019-1070
Document Number
2020-19387
Type
Rule
Publication Date
September 3, 2020
Effective Date
October 8, 2020
Affected Manufacturer
The Boeing Company
Criticality
routine
Emergency
No
Docket ID
Docket No. FAA-2019-1070
Topics
Official Documents
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