AD 91-03-16
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | The Boeing Company | 747-400 Series | Airworthiness Directives; BOEING Model 747-400 Series Airplanes |
Unsafe Condition
Smoking material dropping behind the sidewall lining at the second observer's station.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Install a housing on the outboard side of the second observer's ashtray in accordance with Boeing Alert Service Bulletin 747-25A2862, Revision 1. Alternate means of compliance or adjustment of compliance time may be approved by the Manager, Seattle Aircraft Certification Office.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
within the next 9 months after the effective date of this AD, unless previously accomplished
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
Model 747-400 series airplanes listed in Boeing Alert Service Bulletin 747-25A2862, Revision 1, dated December 13, 1990.
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
This site is not affiliated with or endorsed by the FAA. Always verify with official sources.