AD Amdt-39-15485
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Boeing | 747-400 | Airworthiness Directives; Boeing Model 747-400 Series Airplanes |
Unsafe Condition
Oxygen cylinder supports may not have been properly heat-treated, potentially leading to failure under critical flight load conditions. This could cause the oxygen cylinder to come loose and leak oxygen, resulting in oxygen unavailability for the flightcrew or a fire hazard.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Inspect the support bracket of the crew oxygen cylinder installation to determine the manufacturing date marked on the support. Perform corrective action if necessary.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Before further flight
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Affected Aircraft
Boeing Model 747-400 series airplanes, including those not on the U.S. Register, with certain oxygen cylinder support configurations.
AI-generated summary from the source AD text. Verify against the official source before acting.
Source: Official FAA Source ↗
Retrieved: Apr 6, 2026
Rights: U.S. Government Public Domain
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