AD 2006-25-08
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Lancair | Various | Airworthiness Directives; Columbia Aircraft Manufacturing Models LC41-550FG and LC42-550FG Airplanes |
Unsafe Condition
Problems with the installation of the Kelly Aerospace Thermal Systems Thermawing Deice System following STC SA02260CH, resulting in a short circuit condition at the deice heater connector, which could cause damage to the wings and horizontal stabilizer, leading to reduced structural integrity of the airplane.
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Required Actions
Deactivate the Kelly Aerospace Thermal Systems Thermawing Deice System installed following STC SA02260CH. Fabricate and install a placard in clear view of the pilot stating 'DEICE SYSTEM INOPERABLE'.
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Compliance Time
Before further flight after December 21, 2006
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Affected Aircraft
Columbia Aircraft Manufacturing Models LC41-550FG and LC42-550FG airplanes, all serial numbers equipped with Kelly Aerospace Thermal Systems Supplemental Type Certificate (STC) SA02260CH.
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Source: Official FAA Source ↗
Retrieved: Apr 4, 2026
Rights: U.S. Government Public Domain
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