AD 90-17-07
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | The Boeing Company | 747-400 Series | Airworthiness Directives; BOEING Model 747-400 Series Airplanes |
Unsafe Condition
Failure of PSU closure panels to remain secured could result in their falling and causing injury to passengers.
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Required Actions
Modify the PSU rails in accordance with Boeing Service Bulletin 747-25-2853 dated March 1, 1990. An alternate means of compliance or adjustment of the compliance time may be used if approved by the Manager, Seattle Aircraft Certification Office.
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Compliance Time
within the next 90 days after the effective date of this AD, unless previously accomplished
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Affected Aircraft
Model 747-400 series airplanes listed in Boeing Service Bulletin 747-25-2853 dated March 1, 1990, 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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