AD 2003-14-13
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Aerospatiale | Model ATR42 Series | Airworthiness Directives; Aerospatiale Model ATR42 Series Airplanes and Model ATR72 Series Airplanes |
Unsafe Condition
Shorting of a contact in the Automatic Takeoff Power Control System (ATPCS) test selector switch due to abnormal wear of contact surfaces, which could result in dual engine power drop with associated loss of both alternating current wild and main hydraulic power during ground maneuvers, and consequent reduced controllability of the airplane and increased flightcrew workload.
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Required Actions
Replace the IPP JANCO ATPCS test selector switch having part number ACE 0002 on panel 114VU (FIN 22KF) with an IEC Electronique test selector switch having part number 097-037-00, per Avions de Transport Regional Service Letters ATR42-61-5012 (for Model ATR42 series airplanes) or ATR72-61-6008 (for Model ATR72 series airplanes), both dated April 23, 2002. As of the effective date, no person shall install an IPP JANCO ATPCS test selector switch, P/N ACE 0002, on any airplane.
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Compliance Time
Within 5 years after the effective date of this AD.
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Affected Aircraft
Aerospatiale Model ATR42-200, -300, -320, and -500 series airplanes; and Model ATR72 series airplanes, certificated in any category, equipped with IPP JANCO Automatic Takeoff Power Control System (ATPCS) test selector switch, part number (P/N) ACE 0002; except those airplanes having received modification 5162 in production and on which no replacement of the ATPCS test selector switch has been performed afterwards.
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Source: Official FAA Source ↗
Retrieved: Apr 6, 2026
Rights: U.S. Government Public Domain
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