# Proposed AD FAA-2022-0084: Pilatus Aircraft Ltd. Airplanes

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2022-08-09
- Products: Pilatus
- Product type: Aircraft
- Action: Notice of proposed rulemaking (NPRM).
- Published: February 3, 2022, 87 FR 6087
- Comments due: March 21, 2022
- Became: [AD 2022-08-09](https://openairdocs.org/ad/2022-08-09)
- Docket: FAA-2022-0084 (https://www.regulations.gov/docket/FAA-2022-0084, where comments are filed)
- Project: MCAI-2020-01312-A
- FR document: 2022-02130
- Official PDF: https://openairdocs.org/files/sha256/6c/5c/6c5c4648ab3fea4fedd82df61e630d3f475ea97c171e0115d1ed2fb157a97848 (from https://www.govinfo.gov/content/pkg/FR-2022-02-03/pdf/2022-02130.pdf)
- Federal Register: https://www.federalregister.gov/documents/2022/02/03/2022-02130/airworthiness-directives-pilatus-aircraft-ltd-airplanes
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/FR-ADNPRM-2022-02130-00000000000.0001
- Page: https://openairdocs.org/proposed/FAA-2022-0084

## Summary

The FAA proposes to adopt a new airworthiness directive (AD) for all Pilatus Aircraft Ltd. (Pilatus) Model PC-24 airplanes. This proposed AD was prompted by a failure of the dual ethernet communication channel on a dual-channel data concentration and processing unit, which triggered the opening of electronic circuit breakers that caused several unintended system activations. This proposed AD would require installing a software (SW) upgrade to the utility management system (UMS), as specified in a European Union Aviation Safety Agency (EASA) AD, which is proposed for incorporation by reference (IBR). The FAA is proposing this AD to address the unsafe condition on these products.

## Notices in this docket

- Feb 3, 2022: Notice of proposed rulemaking (NPRM). (first notice), FR document 2022-02130, comments due Mar 21, 2022 (https://www.federalregister.gov/documents/2022/02/03/2022-02130/airworthiness-directives-pilatus-aircraft-ltd-airplanes)

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