AD 2011-23-10
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Aviat | Various | Airworthiness Directives; ATR-GIE Avions de Transport Régional Airplanes |
Unsafe Condition
One ATR operator experienced in-flight elevator travel limitations with unusual effort required on the pitch axis, accompanied by a 'pitch mistrim' message. Post-flight inspection revealed the LH elevator lower stop assembly was broken at the level of the angles, potentially preventing normal elevator response to flight control inputs.
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Required Actions
Within 6 months after the effective date, perform a general visual inspection of the inboard hinge fitting area and a detailed inspection of lower stop angles of the inboard hinge fittings on both LH and RH elevators. Replace damaged angles with serviceable parts and inspect adjacent areas for damage. Repair any detected damage using an approved method. Report findings to ATR Engineering.
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Compliance Time
Within 6 months after the effective date
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Affected Aircraft
ATR-GIE Avions de Transport Régional Model ATR42-200, -300, -320, and -500 airplanes, all manufacturer serial numbers (MSN) up to MSN 643 inclusive; and Model ATR72-101, -102, -201, -202, -211, -212, and -212A airplanes, all MSNs up to MSN 728 inclusive, certificated in any category.
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Source: Official FAA Source ↗
Retrieved: Apr 6, 2026
Rights: U.S. Government Public Domain
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