AD 91-11-03
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | The Boeing Company | DC-9-81 (MD-81) | Airworthiness Directives; MCDONNELL DOUGLAS DC-9-80 (MD-80) Series Airplanes and MD-88 Airplanes |
| aircraft | The Boeing Company | DC-9-82 (MD-82) | Airworthiness Directives; MCDONNELL DOUGLAS DC-9-80 (MD-80) Series Airplanes and MD-88 Airplanes |
| aircraft | The Boeing Company | DC-9-83 (MD-83) | Airworthiness Directives; MCDONNELL DOUGLAS DC-9-80 (MD-80) Series Airplanes and MD-88 Airplanes |
| aircraft | The Boeing Company | DC-9-87 (MD-87) | Airworthiness Directives; MCDONNELL DOUGLAS DC-9-80 (MD-80) Series Airplanes and MD-88 Airplanes |
| aircraft | The Boeing Company | MD-88 | Airworthiness Directives; MCDONNELL DOUGLAS DC-9-80 (MD-80) Series Airplanes and MD-88 Airplanes |
Unsafe Condition
Passenger service unit (PSU) oxygen doors may become jammed closed.
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Required Actions
Within 45 days after November 5, 1990, and every 45 days thereafter, inspect all PSU oxygen doors for proper closure. Jammed doors must be readjusted prior to further flight. Install PSU oxygen door stops within 12 months after June 24, 1991, to terminate repetitive inspections.
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Compliance Time
Required as indicated, unless previously accomplished.
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Affected Aircraft
MCDONNELL DOUGLAS DC-9-80 (MD-80) series airplanes and MD-88 airplanes, certificated in any category.
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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