AD 2015-26-07
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Boeing | Company | Airworthiness Directives; The Boeing Company Airplanes |
Unsafe Condition
Certain barrel nuts installed at the vertical fin may be subject to stress corrosion and cracking, which could result in reduced structural integrity of the vertical fin attachment joint, loss of the vertical fin, and consequent loss of controllability of the airplane.
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Required Actions
Either repetitive inspections of vertical fin barrel nuts for corrosion or a magnetic check to identify certain barrel nuts must be performed. Corrective actions, such as replacement of corroded or loose barrel nuts, are required if necessary.
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Compliance Time
Within 36 months after the last torque check inspection specified in Task 53-734-00, or 24 months after the issuance of the service information, whichever is later.
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Affected Aircraft
The Boeing Company Model 767-200, -300, and -300F series airplanes with line numbers 575 through 681 inclusive.
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Source: Official FAA Source ↗
Retrieved: Apr 6, 2026
Rights: U.S. Government Public Domain
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