AD 2021-08-04
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Boeing | Company | Airworthiness Directives; The Boeing Company Airplanes |
Unsafe Condition
a possible ignition source or an inlet valve jam in a crew oxygen mask stowage box unit, which could result in an oxygen-fed fire or restricted flow of oxygen.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
a general visual inspection for affected serial numbers of the crew oxygen mask stowage box units, and replacement or re-identification as necessary.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Within 24 months after the effective date of this AD.
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Affected Aircraft
The Boeing Company Model 737-700, -700C, -800, and -900ER series airplanes, Model 747-400F series airplanes, and Model 767-200 and -300 series airplanes.
AI-generated summary from the source AD text. Verify against the official source before acting.
Source: Official FAA Source ↗
Retrieved: Apr 4, 2026
Rights: U.S. Government Public Domain
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