AD 2005-20-18
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Boeing | 747-100 | Airworthiness Directives; Boeing Model 747-100, -200B, -200F, -200C, -100B, -300, -100B SUD, -400, -400D, and -400F Series Airplanes; and Model 747SR Series Airplanes |
Unsafe Condition
Cracks and corrosion around the lower bearing of the actuator attach fittings of the inboard and outboard flaps, which could result in abnormal operation or retraction of a trailing edge flap, and possible loss of controllability of the airplane.
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Required Actions
Inspect for discrepancies of the actuator attach fittings of the flaps; repair if necessary; and overhaul or replace the fittings of both the inboard and outboard flaps repetitively.
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Compliance Time
Within specified times as outlined in the referenced service bulletins.
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Affected Aircraft
Boeing Model 747-100, -200B, -200F, -200C, -100B, -300, -100B SUD, -400, -400D, -400F, and Model 747SR series airplanes.
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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