AD 2007-16-13
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Boeing | 757-200 | Airworthiness Directives; Boeing Model 757-200, -200PF, and -200CB Series Airplanes |
Unsafe Condition
Cracking, loose and broken bolts, and shim migration in the joint between the aft torque bulkhead and the strut-to-diagonal brace fitting, which could result in damage to the strut and consequent separation of the strut and engine from the airplane.
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Required Actions
Inspect the shim installation between the vertical flange and bulkhead, and repair if necessary. Inspect the four critical fastener holes in the horizontal flange for cracking, and repair if necessary. Replace the shim if cumulative movement exceeds 0.50 inch and inspect/repair the four critical fastener holes on the horizontal flange. Inspect fasteners for signs of movement or gaps under the head or collar, and repair or replace as necessary.
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Compliance Time
Within 90 days after the date of the service bulletin or 6,000 flight cycles or 36 months, whichever occurs first, after the incorporation of Boeing Service Bulletin 757-54-0035.
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Affected Aircraft
Boeing Model 757-200, -200PF, and -200CB series airplanes, as specified in the alert service bulletin.
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Source: Official FAA Source ↗
Retrieved: Apr 4, 2026
Rights: U.S. Government Public Domain
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