AD 2017-26-09
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | ATR-GIE | Avions de Transport Régional | Airworthiness Directives; ATR-GIE Avions de Transport Régional Airplanes |
Unsafe Condition
Damage of an engine fire extinguishing pipe was reported on an in-service ATR 72-212A aeroplane. The damage was induced by chafing between the engine fire extinguishing pipe and a fastener assembly installed between flap arm and hinge flap at rib 4 during flaps extension to the 30 degrees position. The subsequent investigation also determined that the chafing occurred as a result of an incorrect (back to front) installation of the pipe.
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Required Actions
Inspect for damage of the engine fire extinguishing pipes and incorrect pipe installation, and, depending on findings, accomplishment of applicable corrective actions, including replacing damaged pipes, ensuring correct alignment, applying protective sealant and corrosion inhibiting compound, replacing damaged fasteners with new fasteners, and repairing flap arms and flap hinges.
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Compliance Time
Before further flight
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Affected Aircraft
ATR--GIE Avions de Transport R[eacute]gional Model ATR 42-500 airplanes and Model ATR 72-212A airplanes.
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Source: Official FAA Source ↗
Retrieved: Apr 4, 2026
Rights: U.S. Government Public Domain
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