AD 2018-20-05
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Boeing | Company | Airworthiness Directives; The Boeing Company Airplanes |
Unsafe Condition
Cracking in the station 259.5 bulkhead frame web from the first stiffener above stringer S-10 to S-13 may lead to subsequent failure of the skin and cockpit window surround structure, and could result in rapid decompression.
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Required Actions
Repetitive high frequency eddy current inspections and low frequency eddy current inspections for cracks of the station 259.5 bulkhead frame web from the first stiffener above S-10 to S-13, on the left and right sides of the airplane, and applicable on-condition actions.
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Compliance Time
At intervals not to exceed 8,600 flight cycles.
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Affected Aircraft
All The Boeing Company Model 727C, 727-100, 727-100C, 727-200, and 727-200F series airplanes.
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Source: Official FAA Source ↗
Retrieved: Apr 6, 2026
Rights: U.S. Government Public Domain
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