AD 69-25-09
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Airbus SAS | BAC 1-11 200 Series | Airworthiness Directives; BRITISH AIRCRAFT CORPORATION Model BAC 1-11 Airplanes |
| aircraft | Airbus SAS | BAC 1-11 400 Series | Airworthiness Directives; BRITISH AIRCRAFT CORPORATION Model BAC 1-11 Airplanes |
Unsafe Condition
The passenger oxygen system shut-off valve may not be maintained in the OFF position during normal operations, and the center roof panel 'E' may exhibit overheating, damage, or fouls, leading to potential oxygen system leaks and operational restrictions above 30,000 feet.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Add operating limitations to the Airplane Flight Manual prohibiting passenger operations above 30,000 feet and requiring the oxygen system shut-off valve to remain OFF. Inspect the center roof panel 'E' for overheating, damage, and fouls within 200 hours' time in service. Test the passenger drop-out oxygen system control panel for leaks within 200 hours' time in service and at intervals not exceeding 200 hours. Replace panels with modified versions if leaks are found, adjusting subsequent test intervals to 1,000 hours' time in service after modification.
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Compliance Time
within the next 75 hours' time in service after the effective date of this AD (for paragraph (a)), within the next 200 hours' time in service after the effective date (for paragraphs (b), (c), (e)), and on or before 1 July 1970 (for paragraphs (h), (i))
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Affected Aircraft
BRITISH AIRCRAFT CORPORATION Model BAC 1-11 200 Series and 400 Series airplanes
AI-generated summary from the source AD text. Verify against the official source before acting.
Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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