AD 2017-12-01
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Boeing | Company | Airworthiness Directives; The Boeing Company Airplanes |
Unsafe Condition
Interference between the 6-9 drive arm assembly and the 4-5 actuator crank arm assembly, which causes a fatigue load on the 5-7 link that could result in failure of the 5-7 link and subsequent loss of the inboard flap.
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Required Actions
Repetitive inspections for damage caused by interference between the 6-9 drive arm assembly and the 4-5 actuator crank arm assembly on the inboard flap outboard support assembly number 3 and number 6. Related investigative and corrective actions if necessary.
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Compliance Time
As specified in the service information (Boeing Alert Service Bulletin 767-57A0134), which can be found at <a href="http://www.regulations.gov">http://www.regulations.gov</a> by searching for Docket No. FAA-2017-0531.
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Affected Aircraft
The Boeing Company Model 767-200 series airplanes modified by Supplemental Type Certificate (STC) ST01329WI-D.
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Source: Official FAA Source ↗
Retrieved: Apr 4, 2026
Rights: U.S. Government Public Domain
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