AD 97-22-08
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Pilatus Aircraft Limited | PC-12 | Airworthiness Directives; Pilatus Aircraft LTD Models PC-6/B1-H2, PC-6/B2-H2, PC-6/B2-H4, and PC-12 Airplanes |
| aircraft | Pilatus Aircraft Limited | PC-6/B1-H2 | Airworthiness Directives; Pilatus Aircraft LTD Models PC-6/B1-H2, PC-6/B2-H2, PC-6/B2-H4, and PC-12 Airplanes |
| aircraft | Pilatus Aircraft Limited | PC-6/B2-H2 | Airworthiness Directives; Pilatus Aircraft LTD Models PC-6/B1-H2, PC-6/B2-H2, PC-6/B2-H4, and PC-12 Airplanes |
| aircraft | Pilatus Aircraft Limited | PC-6/B2-H4 | Airworthiness Directives; Pilatus Aircraft LTD Models PC-6/B1-H2, PC-6/B2-H2, PC-6/B2-H4, and PC-12 Airplanes |
Unsafe Condition
Loss of airplane control or engine overspeed with consequent loss of engine power caused by the power levers being positioned below the flight idle stop while the airplane is in flight.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Amend the Limitations Section of the airplane flight manual (AFM) or pilot's operating handbook (POH) by inserting specified temporary revisions to prohibit positioning power levers below the flight idle stop during flight, including a consequence statement. Entry into aircraft records must be made per 14 CFR 43.11.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
within the next 30 days after the effective date of this AD
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Affected Aircraft
Pilatus Aircraft LTD Models PC-6/B1-H2, PC-6/B2-H2, PC-6/B2-H4 (all serial numbers with PT6A turboprop engines) and PC-12 (all serial numbers)
AI-generated summary from the source AD text. Verify against the official source before acting.
Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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