AD 2003-18-07
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Aviat | Various | Airworthiness Directives; Aerospatiale Model ATR42-200, -300, -320, and -500 Series Airplanes; and Model ATR72 Series Airplanes |
Unsafe Condition
Use of Type II or IV de-icing or anti-icing fluids can lead to higher-than-normal stick forces during rotation, potentially causing delayed rotation, significantly lower rotation rates, and in some cases, the decision of the flightcrew to abort the takeoff after V1.
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Required Actions
Revise the Airplane Flight Manual (AFM) to modify procedures for calculating takeoff performance when Type II or IV de-icing or anti-icing fluids have been used. The revision must correct the performance values for Model ATR-72 series airplanes and provide an additional method of compliance for all affected airplanes.
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Compliance Time
Within 12 months of the effective date (October 15, 2003).
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Affected Aircraft
All Aerospatiale Model ATR42-200, -300, -320, and -500 series airplanes; and all Model ATR72 series airplanes.
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Source: Official FAA Source ↗
Retrieved: Apr 6, 2026
Rights: U.S. Government Public Domain
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