AD 2007-09-04
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Boeing | 777-200 | Airworthiness Directives; Boeing Model 777-200, 777-300, and 777-300ER Series Airplanes |
Unsafe Condition
Corrosion on the torque tube and closeout rib fittings that support the inboard end of the inboard trailing edge flap, as well as the potential for premature fatigue cracking of the torque tube that would not be detected using reasonable inspection methods.
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Required Actions
Repetitive inspections for discrepancies of the splined components that support the inboard end of the inboard trailing edge flap; related investigative, corrective, and other specified actions if necessary; a one-time modification of the inboard support of the inboard trailing edge flap by installing a new isolation strap and attachment hardware; repetitive replacement of the torque tube assembly; and for certain Boeing Model 777-200 series airplanes, one-time inspections of the flap seal panels for cracking and minimum clearances, and of the torque tubes for damage; related investigative and corrective actions if necessary.
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Compliance Time
Within specified intervals as outlined in the Boeing 777 Maintenance Planning Document (MPD).
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Affected Aircraft
Boeing Model 777-200, 777-300, and 777-300ER series airplanes.
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Source: Official FAA Source ↗
Retrieved: Apr 4, 2026
Rights: U.S. Government Public Domain
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