AD 2024-24-01
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Boeing | Company | Airworthiness Directives; The Boeing Company Airplanes |
Unsafe Condition
Cracking at the upper frames common to the splice at stringers S-13 to S-14, which could interact with fuselage skin cracking at the stringer S-14 lap splice, could result in the inability of a principal structural element to sustain limit loads and adversely affect the structural integrity of the airplane.
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Required Actions
An inspection or records review for existing repairs between stringers S-13 and S-14 in Sections 43 and 46. Repetitive high frequency eddy current (HFEC) and low frequency eddy current (LFEC) inspections for cracking of the upper frames and splice doublers at the frame splices between stringers S-13 and S-14. Applicable on-condition actions, including repair.
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Compliance Time
Within the specified compliance times and repeat intervals as outlined in Boeing Alert Requirements Bulletin 757-53A0115, dated January 25, 2022, with a reduction by a factor of two for airplanes modified by Aviation Partners Boeing (APB) STC ST01518SE.
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Affected Aircraft
The Boeing Company Model 757-200, -200CB, and -200PF series airplanes, including those modified by VT MAE STC ST03562AT and Aviation Partners Boeing (APB) STC ST01518SE.
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Source: Official FAA Source ↗
Retrieved: Apr 4, 2026
Rights: U.S. Government Public Domain
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