AD 94-15-05
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | The Boeing Company | 747-400 Series | Airworthiness Directives; Boeing Model 747-400 Series Airplanes |
| aircraft | The Boeing Company | 747-400D Series | Airworthiness Directives; Boeing Model 747-400 Series Airplanes |
| aircraft | The Boeing Company | 747-400F Series | Airworthiness Directives; Boeing Model 747-400 Series Airplanes |
Unsafe Condition
Inadvertent deployment of a thrust reverser during flight due to possible failure modes in the thrust reverser control system can result in control problems during high-speed climb or cruise.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Perform inspections and functional tests of the thrust reverser control and indication systems, including damage inspections to the bullnose seal, continuity tests of the position switch module, cone brake tests, and submission of results to the FAA. Correct discrepancies found prior to further flight or operate under MEL limitations with no more than one inoperative thrust reverser.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Within 90 days or 9 months after the effective date (August 24, 1994), depending on engine type, and repeat at intervals not exceeding 18 months or 1,000 hours time-in-service.
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
Boeing Model 747-400 Series, 747-400D Series, 747-400F Series airplanes powered by Pratt & Whitney PW4000, General Electric CF6-80C2, or Rolls-Royce RB211-524G/H series engines.
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.