AD 2010-05-02
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Pilatus | AIRCRAFT LTD | Airworthiness Directives; PILATUS AIRCRAFT LTD. Model PC-12/47E Airplanes |
| aircraft | Aviat | Various | Airworthiness Directives; PILATUS AIRCRAFT LTD. Model PC-12/47E Airplanes |
Unsafe Condition
Both Primary Flight Displays (PFDs) could indicate a roll attitude offset of up to 10 degrees in the same direction during an accelerated turn onto the active runway followed by take-off. Additionally, incorrect heading may be displayed if the ADAHRS switches from GPS track to magnetometer heading in low horizontal magnetic field strength areas.
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Required Actions
Update the ADAHRS software or replace the ADAHRS unit. Operators must also comply with Pilatus Aircraft Ltd. Service Bulletin No.: 34-022 and Honeywell International Inc. Service Bulletin KSG 7200-34-09, Revision 0.
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Compliance Time
Within 12 months of the effective date (April 1, 2010)
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Affected Aircraft
PILATUS AIRCRAFT LTD. Model PC-12/47E airplanes with affected ADAHRS units installed, including all serial numbers unless otherwise specified by the manufacturer.
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Source: Official FAA Source ↗
Retrieved: Apr 4, 2026
Rights: U.S. Government Public Domain
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