AD 2007-12-20
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Aviat | Various | Airworthiness Directives; Aerospatiale Model ATR42 and ATR72 Airplanes |
Unsafe Condition
Electrical arcing due to chafing between a bonding cable and electrical wires in the 120 VU electrical harness, causing the loss of some instruments and loss of one hydraulic circuit pressure.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Inspect the harness installation in the 120 VU electrical harness and, as applicable, restore correct installation of the bonding cable, in accordance with the instructions given by Avions de Transport Regional Service Bulletins ATR42-92-0012 (for Model ATR42 airplanes) and ATR72-92-1013 (for Model ATR72 airplanes), both dated July 4, 2006; or Revision 01, both dated December 7, 2006; as applicable.
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Compliance Time
Within 3 months after the effective date of this AD.
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Affected Aircraft
Model ATR42-200, -300, -320, and -500 airplanes; all serial numbers up to manufacturer serial number (MSN) 643 inclusive; and Model ATR72-101, -102, -201, -202, -211, -212, and -212A airplanes, all serial numbers up to MSN 728 inclusive, except MSN 723 and 725; 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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