# Proposed AD FAA-2021-0786: Pilatus Aircraft Ltd. Airplanes

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2021-24-22
- Products: Pilatus
- Product type: Aircraft
- Action: Notice of proposed rulemaking (NPRM).
- Published: September 17, 2021, 86 FR 51835
- Comments due: November 1, 2021
- Became: [AD 2021-24-22](https://openairdocs.org/ad/2021-24-22)
- Docket: FAA-2021-0786 (https://www.regulations.gov/docket/FAA-2021-0786, where comments are filed)
- Project: MCAI-2021-00429-A
- FR document: 2021-19961
- Official PDF: https://openairdocs.org/files/sha256/d2/c4/d2c4e57bc8697c67fba36fe3ccf1f4fa000248c07706c200deb41e6223cbbab4 (from https://www.govinfo.gov/content/pkg/FR-2021-09-17/pdf/2021-19961.pdf)
- Federal Register: https://www.federalregister.gov/documents/2021/09/17/2021-19961/airworthiness-directives-pilatus-aircraft-ltd-airplanes
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/90FDF36BD091A4848625875300810004.0001
- Page: https://openairdocs.org/proposed/FAA-2021-0786

## Summary

The FAA proposes to supersede Airworthiness Directive (AD) 2012-06-16, which applies to all Pilatus Aircraft Ltd. (Pilatus) 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. AD 2012-06-16 requires installing a new rudder and elevator locking screw and modifying the installation of the rudder and elevator hinge bolt. Since the FAA issued AD 2012-06-16, the European Union Aviation Safety Agency (EASA) superseded its mandatory continuing airworthiness information (MCAI) to correct an unsafe condition on these products. This proposed AD would not retain any actions required by AD 2012-06-16 and would require inspecting and modifying the rudder, elevator, and right-hand (RH) aileron hinge bolt installations. The FAA is proposing this AD to address the unsafe condition on these products.

## Notices in this docket

- Sep 17, 2021: Notice of proposed rulemaking (NPRM). (first notice), FR document 2021-19961, comments due Nov 1, 2021 (https://www.federalregister.gov/documents/2021/09/17/2021-19961/airworthiness-directives-pilatus-aircraft-ltd-airplanes)

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