# Proposed AD FAA-2017-0052: Bell Helicopter Textron Inc. Helicopters

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2020-02-11
- Products: Bell Helicopter Textron
- Product type: Aircraft
- Action: Notice of proposed rulemaking (NPRM).
- Published: August 2, 2018, 83 FR 37764
- Comments due: October 1, 2018
- Became: [AD 2020-02-11](https://openairdocs.org/ad/2020-02-11)
- Docket: FAA-2017-0052 (https://www.regulations.gov/docket/FAA-2017-0052, where comments are filed)
- FR document: 2018-16495
- Official PDF: https://openairdocs.org/files/sha256/63/3b/633b9376b6f6ce30698bb6b91be1419cd19696bf402317541b5ce54fdc90d12d (from https://www.govinfo.gov/content/pkg/FR-2018-08-02/pdf/2018-16495.pdf)
- Federal Register: https://www.federalregister.gov/documents/2018/08/02/2018-16495/airworthiness-directives-bell-helicopter-textron-inc-helicopters
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/0D06AEB00AC1C071862582DD0067FD1D.0001
- Page: https://openairdocs.org/proposed/FAA-2017-0052

## Summary

We propose to supersede airworthiness directive (AD) 2015-04- 04 for Bell Helicopter Textron Inc. (Bell) Model 412 and 412EP helicopters. AD 2015-04-04 requires revising the Rotorcraft Flight Manual (RFM) and installing a placard to limit flights to visual flight rules (VFR) and prohibiting night operations because of failing inverters. This proposed AD would require replacing the inverters with a new inverter. The actions in this proposed AD are intended to correct an unsafe condition on these products.

## Notices in this docket

- Aug 2, 2018: Notice of proposed rulemaking (NPRM). (first notice), FR document 2018-16495, comments due Oct 1, 2018 (https://www.federalregister.gov/documents/2018/08/02/2018-16495/airworthiness-directives-bell-helicopter-textron-inc-helicopters)

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