# Proposed AD FAA-2019-1099: Airbus Helicopters

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2020-15-01
- Products: Airbus Helicopters
- Product type: Aircraft
- Action: Notice of proposed rulemaking (NPRM).
- Published: February 28, 2020, 85 FR 11879
- Comments due: April 28, 2020
- Became: [AD 2020-15-01](https://openairdocs.org/ad/2020-15-01)
- Docket: FAA-2019-1099 (https://www.regulations.gov/docket/FAA-2019-1099, where comments are filed)
- FR document: 2020-04043
- Official PDF: https://openairdocs.org/files/sha256/e1/1b/e11b9b49102111af2ebfcc9094bdc0f4f6f3f00c8f307c96942ac48299c84eed (from https://www.govinfo.gov/content/pkg/FR-2020-02-28/pdf/2020-04043.pdf)
- Federal Register: https://www.federalregister.gov/documents/2020/02/28/2020-04043/airworthiness-directives-airbus-helicopters
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/D1678DD39934DBBE8625851F008284D4.0001
- Page: https://openairdocs.org/proposed/FAA-2019-1099

## Summary

The FAA proposes to adopt a new airworthiness directive (AD) for Airbus Helicopters Model EC 155B and EC155B1 helicopters. This proposed AD would require modifying the wiring of the attitude and heading reference system (AHRS) connector. This proposed AD is prompted by a report of wiring of the AHRS contrary to approved design specifications. The actions of this proposed AD are intended to address an unsafe condition on these products.

## Notices in this docket

- Feb 28, 2020: Notice of proposed rulemaking (NPRM). (first notice), FR document 2020-04043, comments due Apr 28, 2020 (https://www.federalregister.gov/documents/2020/02/28/2020-04043/airworthiness-directives-airbus-helicopters)

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