AD 2018-17-07
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | ATR-GIE | Avions de Transport Régional | Airworthiness Directives; ATR-GIE Avions de Transport Régional Airplanes |
Unsafe Condition
An event was reported of several spurious alarms on a recently delivered ATR 72 aeroplane. During subsequent trouble-shooting, damage was found on the electrical harness wire bundle (Route 1M), due to chafing with a window blinding panel located on the left-hand (LH) side of the fuselage, zone 231. A bracket, necessary to maintain the harness wire bundle close to the structure of the fuselage and avoid chafing, was missing. The same bracket was also found missing on the right-hand (RH) side of the fuselage, zone 232, Route 2M, although without damage on the harness wire bundle. A quality investigation revealed another aeroplane on the production line where same brackets were not installed. This condition, if not detected and corrected, may lead to wire failure (cut or shorted) and, in case of several failures in combination, to loss of systems, possibly resulting in reduced control of the aeroplane.
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Required Actions
Inspect the installation of the brackets, perform a one-time inspection of the wire bundles, and depending on findings, accomplish applicable corrective action(s).
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Compliance Time
Before further flight
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Affected Aircraft
Model ATR42-500 airplanes and Model ATR72-212A airplanes, manufacturer serial numbers 1071, 1141, 1341, 1367, and 1377 are not affected by the identified unsafe condition.
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Source: Official FAA Source ↗
Retrieved: Apr 4, 2026
Rights: U.S. Government Public Domain
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