AD Amdt-39-11227
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Boeing | 747-200 and -300 | Airworthiness Directives; Boeing Model 747-200 and -300 Series Airplanes Equipped With General Electric CF6-80C2 Series Engines |
| engine | General Electric | CF6-80C2 Series | Airworthiness Directives; Boeing Model 747-200 and -300 Series Airplanes Equipped With General Electric CF6-80C2 Series Engines |
Unsafe Condition
Low holding torque of the center drive unit (CDU) cone brake may lead to possible failure modes in the thrust reverser control system, resulting in inadvertent deployment of a thrust reverser during flight.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Inspect the thrust reverser control and indication system, perform functional tests to detect discrepancies, and correct any discrepancies found. Reduce the repetitive interval for one specific functional test.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Within the specified time frame as outlined in the AD, which reduces the repetitive interval for one functional test.
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
Boeing Model 747-200 and -300 series airplanes equipped with General Electric CF6-80C2 series engines.
AI-generated summary from the source AD text. Verify against the official source before acting.
Source: Official FAA Source ↗
Retrieved: Apr 6, 2026
Rights: U.S. Government Public Domain
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