AD 2001-11-09
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Airbus | A330 and A340 | Airworthiness Directives; Airbus Model A330 and A340 Series Airplanes |
Unsafe Condition
Entrance of water into the ball nut of the trimmable horizontal stabilizer actuator (THSA), resulting in jamming of the ball transfer path when the water freezes.
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Required Actions
Inspect the ball nut in the area of the transfer tubes for evidence of ball migration, distortion of the collar or transfer tubes, or disconnection of the transfer tubes from the ball nut. Replace the THSA if necessary. Report inspection findings to Airbus.
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Compliance Time
Within the applicable compliance time specified in the AD.
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Affected Aircraft
Airbus Model A330 and A340 series airplanes, certificated in any category, equipped with a trimmable horizontal stabilizer actuator (THSA) part number 47172, and on which Airbus Modification 45299 has been performed.
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Source: Official FAA Source ↗
Retrieved: Apr 6, 2026
Rights: U.S. Government Public Domain
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