AD 90-19-01
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Pilatus Aircraft Limited | PC-6 | Airworthiness Directives; PILATUS AIRCRAFT, LTD. AND FAIRCHILD-HILLER Model PC-6 series airplanes manufactured by Pilatus Aircraft, Ltd., (Serial Number (S/N) 1 through 824), and to Model PC-6 airplanes manufactured by Fairchild-Hiller (S/N 2001 and up) |
| aircraft | Pilatus Aircraft Limited | PC-6-H1 | Airworthiness Directives; PILATUS AIRCRAFT, LTD. AND FAIRCHILD-HILLER Model PC-6 series airplanes manufactured by Pilatus Aircraft, Ltd., (Serial Number (S/N) 1 through 824), and to Model PC-6 airplanes manufactured by Fairchild-Hiller (S/N 2001 and up) |
| aircraft | Pilatus Aircraft Limited | PC-6-H2 | Airworthiness Directives; PILATUS AIRCRAFT, LTD. AND FAIRCHILD-HILLER Model PC-6 series airplanes manufactured by Pilatus Aircraft, Ltd., (Serial Number (S/N) 1 through 824), and to Model PC-6 airplanes manufactured by Fairchild-Hiller (S/N 2001 and up) |
| aircraft | Pilatus Aircraft Limited | PC-6/350 | Airworthiness Directives; PILATUS AIRCRAFT, LTD. AND FAIRCHILD-HILLER Model PC-6 series airplanes manufactured by Pilatus Aircraft, Ltd., (Serial Number (S/N) 1 through 824), and to Model PC-6 airplanes manufactured by Fairchild-Hiller (S/N 2001 and up) |
| aircraft | Pilatus Aircraft Limited | PC-6/350-H1 | Airworthiness Directives; PILATUS AIRCRAFT, LTD. AND FAIRCHILD-HILLER Model PC-6 series airplanes manufactured by Pilatus Aircraft, Ltd., (Serial Number (S/N) 1 through 824), and to Model PC-6 airplanes manufactured by Fairchild-Hiller (S/N 2001 and up) |
| aircraft | Pilatus Aircraft Limited | PC-6/350-H2 | Airworthiness Directives; PILATUS AIRCRAFT, LTD. AND FAIRCHILD-HILLER Model PC-6 series airplanes manufactured by Pilatus Aircraft, Ltd., (Serial Number (S/N) 1 through 824), and to Model PC-6 airplanes manufactured by Fairchild-Hiller (S/N 2001 and up) |
| aircraft | Pilatus Aircraft Limited | PC-6/A | Airworthiness Directives; PILATUS AIRCRAFT, LTD. AND FAIRCHILD-HILLER Model PC-6 series airplanes manufactured by Pilatus Aircraft, Ltd., (Serial Number (S/N) 1 through 824), and to Model PC-6 airplanes manufactured by Fairchild-Hiller (S/N 2001 and up) |
| aircraft | Pilatus Aircraft Limited | PC-6/A-H1 | Airworthiness Directives; PILATUS AIRCRAFT, LTD. AND FAIRCHILD-HILLER Model PC-6 series airplanes manufactured by Pilatus Aircraft, Ltd., (Serial Number (S/N) 1 through 824), and to Model PC-6 airplanes manufactured by Fairchild-Hiller (S/N 2001 and up) |
| aircraft | Pilatus Aircraft Limited | PC-6/A-H2 | Airworthiness Directives; PILATUS AIRCRAFT, LTD. AND FAIRCHILD-HILLER Model PC-6 series airplanes manufactured by Pilatus Aircraft, Ltd., (Serial Number (S/N) 1 through 824), and to Model PC-6 airplanes manufactured by Fairchild-Hiller (S/N 2001 and up) |
| aircraft | Pilatus Aircraft Limited | PC-6/B-H2 | Airworthiness Directives; PILATUS AIRCRAFT, LTD. AND FAIRCHILD-HILLER Model PC-6 series airplanes manufactured by Pilatus Aircraft, Ltd., (Serial Number (S/N) 1 through 824), and to Model PC-6 airplanes manufactured by Fairchild-Hiller (S/N 2001 and up) |
Unsafe Condition
Failure of the welded steel rudder pedal supports.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Visually inspect the rudder pedal support for cracks using a 10x magnifying glass in accordance with the appropriate Service Bulletin. If cracks are found, repair or replace the support with a serviceable unit prior to further flight. Repetitive inspections may be discontinued after installing Pilatus Part Number 116.35.06.104.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Initially within the next 50 hours time-in-service (TIS) after the effective date of this AD, and thereafter at intervals of 100 hours TIS
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
Model PC-6 series airplanes manufactured by Pilatus Aircraft, Ltd., (Serial Number (S/N) 1 through 824), and Model PC-6 airplanes manufactured by Fairchild-Hiller (S/N 2001 and up) (all variants) fitted with welded steel rudder pedal supports, certificated in any category.
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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