# Proposed AD FAA-2020-0342: Airbus Helicopters Deutschland GmbH Helicopters

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2020-19-01
- Products: Airbus Helicopters Deutschland
- Product type: Aircraft
- Action: Notice of proposed rulemaking (NPRM).
- Published: April 28, 2020, 85 FR 23489
- Comments due: June 12, 2020
- Became: [AD 2020-19-01](https://openairdocs.org/ad/2020-19-01)
- Docket: FAA-2020-0342 (https://www.regulations.gov/docket/FAA-2020-0342, where comments are filed)
- FR document: 2020-08976
- Official PDF: https://openairdocs.org/files/sha256/35/9b/359b3acc78a7f95f5288368f04ab997d2701bb76e07b1a37488bd0422c23574e (from https://www.govinfo.gov/content/pkg/FR-2020-04-28/pdf/2020-08976.pdf)
- Federal Register: https://www.federalregister.gov/documents/2020/04/28/2020-08976/airworthiness-directives-airbus-helicopters-deutschland-gmbh-helicopters
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/86CF3F7E0A71A2D78625855800422F4E.0001
- Page: https://openairdocs.org/proposed/FAA-2020-0342

## Summary

The FAA proposes to adopt a new airworthiness directive (AD) for all Airbus Helicopters Deutschland GmbH Model MBB-BK 117 D-2 helicopters. This proposed AD was prompted by a report of an erroneous low rotor revolutions per minute (RPM) indication after establishing a one engine inoperative (OEI) condition. This proposed AD would require a software (SW) modification for the aircraft management computer (AMC). The FAA is proposing this AD to address the unsafe condition on these products.

## Notices in this docket

- Apr 28, 2020: Notice of proposed rulemaking (NPRM). (first notice), FR document 2020-08976, comments due Jun 12, 2020 (https://www.federalregister.gov/documents/2020/04/28/2020-08976/airworthiness-directives-airbus-helicopters-deutschland-gmbh-helicopters)

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