AD Amdt-39-14656
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Pilatus | Aircraft Ltd | Airworthiness Directives; Pilatus Aircraft Ltd. Models PC-6, PC-6-H1, PC-6-H2, PC-6/350, PC-6/350-H1, PC-6/350-H2, PC-6/A, PC-6/A-H1, PC-6/A-H2, PC-6/B-H2, PC-6/B1-H2, PC-6/B2-H2, PC-6/B2-H4, PC-6/C-H2, and PC-6/C1-H2 Airplanes |
Unsafe Condition
Fatigue cracks found in the bottom nose rib on the rudders of certain PC-6 airplanes, which could result in failure of the rudder and lead to loss of rudder control.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Inspect the rudder end rib, part number 6302.27 (or FAA-approved equivalent), for cracks using a mirror. If cracks are detected, replace the rudder end rib with a modified assembly, P/N 6302.26 Pos. 2, channel reinforcement P/N 113.40.06.002, and torque tube P/N 113.40.06.003 (or FAA-approved equivalents).
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Within the next 50 hours time-in-service after August 19, 1968, and repetitively thereafter at intervals not exceeding 50 hours TIS.
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Affected Aircraft
Pilatus Aircraft Ltd. Models PC-6, PC-6-H1, PC-6-H2, PC-6/350, PC-6/350-H1, PC-6/350-H2, PC-6/A, PC-6/A-H1, PC-6/A-H2, PC-6/B-H2, PC-6/B1-H2, PC-6/B2-H2, PC-6/B2-H4, PC-6/C-H2, and PC-6/C1-H2 airplanes, all manufacturer serial numbers, including those manufactured by Fairchild Republic Company (serial numbers 2001 through 2092) under a licensing agreement.
AI-generated summary from the source AD text. Verify against the official source before acting.
Source: Official FAA Source ↗
Retrieved: Apr 4, 2026
Rights: U.S. Government Public Domain
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