# Proposed AD FAA-2019-0389: Sikorsky Aircraft Corporation Helicopters

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2019-19-12
- Products: Sikorsky
- Product type: Aircraft
- Action: Notice of proposed rulemaking (NPRM).
- Published: May 23, 2019, 84 FR 23740
- Comments due: July 8, 2019
- Became: [AD 2019-19-12](https://openairdocs.org/ad/2019-19-12)
- Docket: FAA-2019-0389 (https://www.regulations.gov/docket/FAA-2019-0389, where comments are filed)
- FR document: 2019-10772
- Official PDF: https://openairdocs.org/files/sha256/db/eb/dbebfd6c3a756c7a1979d90fbc840c54b518a7f1b87cb29df4402d71d5bb0d8c (from https://www.govinfo.gov/content/pkg/FR-2019-05-23/pdf/2019-10772.pdf)
- Federal Register: https://www.federalregister.gov/documents/2019/05/23/2019-10772/airworthiness-directives-sikorsky-aircraft-corporation-helicopters
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/B60AAE7CE7937F9386258403004BB068.0001
- Page: https://openairdocs.org/proposed/FAA-2019-0389

## Summary

We propose to supersede Airworthiness Directive (AD) 2018-10- 07, which applies to Sikorsky Aircraft Corporation (Sikorsky) Model S- 76C helicopters. AD 2018-10-07 requires inspecting the engine collective position transducer (CPT). Since we issued AD 2018-10-07, we determined that an additional part-numbered engine CPT is affected by the same unsafe condition. This proposed AD would retain the requirements of AD 2018-10-07 and expand the applicability to include the additional engine CPT. We are proposing this AD to address the unsafe condition on these products.

## Notices in this docket

- May 23, 2019: Notice of proposed rulemaking (NPRM). (first notice), FR document 2019-10772, comments due Jul 8, 2019 (https://www.federalregister.gov/documents/2019/05/23/2019-10772/airworthiness-directives-sikorsky-aircraft-corporation-helicopters)

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