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The FAA is adopting a new airworthiness directive (AD) for all The Boeing Company Model 737 airplanes. This AD was prompted by reports of latent failures of the cabin altitude pressure switches. This AD requires repetitive functional tests of the pressure switches, and on- condition actions, including replacement, if necessary. The FAA is issuing this AD to address the unsafe condition on these products.
Published
Jul 20, 2021
Effective
Jul 20, 2021
Citation
86 FR 38214
Agencies
2
Full text not available in our database.
View on Federal Register →Get a plain-English explanation of what this regulation does, which agencies are responsible, and how it affects existing rules.
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Docket No. FAA-2021-0561
Project Identifier AD-2021-00623-T
Amendment 39-21647
AD 2021-14-20
2120-AA64
14 CFR 39