AD 2008-06-06
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Boeing | 767 | Airworthiness Directives; Boeing Model 767 Airplanes |
Unsafe Condition
Extensive corrosion of the ballscrew in the drive mechanism of the horizontal stabilizer could lead to undetected failure of the primary load path, subsequent wear and failure of the secondary load path, and loss of control of the horizontal stabilizer, potentially resulting in loss of control of the airplane.
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Required Actions
Inspect the drive mechanism of the horizontal stabilizer for discrepancies and loose ball bearings. Lubricate the ballnut and ballscrew. Measure the freeplay between the ballnut and the ballscrew. Take corrective action if necessary. Perform initial and repetitive inspections of the ballscrew-to-ballnut freeplay for certain airplanes.
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Compliance Time
Before further flight
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Affected Aircraft
All Boeing Model 767 airplanes.
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Source: Official FAA Source ↗
Retrieved: Apr 4, 2026
Rights: U.S. Government Public Domain
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