AD 2015-15-10
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Airbus | A318 | Airworthiness Directives; Airbus Airplanes |
Unsafe Condition
Wear of the trimmable horizontal stabilizer actuator (THSA) could reduce its remaining life, possibly resulting in premature failure and reduced control of the airplane.
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Required Actions
Inspect the THSA for damage and replace if necessary. Replace the THSA after reaching a certain life limit. Perform a detailed inspection of the magnetic chip detector, spectrometric analysis of the THSA gearbox oil, detailed inspection of the ballscrew and nut, and detailed inspection of the upper and lower attachments for damage.
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Compliance Time
Before further flight or within 4 months from drainage of the oil sample, depending on the specific inspection.
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Affected Aircraft
All Airbus Model A318, A319, A320, and A321 series airplanes.
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Source: Official FAA Source ↗
Retrieved: Apr 6, 2026
Rights: U.S. Government Public Domain
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