# Proposed AD FAA-2015-4497: Airbus Helicopters Deutschland GmbH (Type Certificate Previously Held by Eurocopter Deutschland GmbH) Helicopters

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2021-05-07
- Products: Airbus Helicopters Deutschland
- Product type: Aircraft
- Action: Notice of proposed rulemaking (NPRM).
- Published: July 16, 2020, 85 FR 43153
- Comments due: September 14, 2020
- Became: [AD 2021-05-07](https://openairdocs.org/ad/2021-05-07)
- Docket: FAA-2015-4497 (https://www.regulations.gov/docket/FAA-2015-4497, where comments are filed)
- FR document: 2020-15313
- Official PDF: https://openairdocs.org/files/sha256/87/27/8727aa57c796db90a7ef06691636a04adcc87cf7a08382391778d545f9b9a79e (from https://www.govinfo.gov/content/pkg/FR-2020-07-16/pdf/2020-15313.pdf)
- Federal Register: https://www.federalregister.gov/documents/2020/07/16/2020-15313/airworthiness-directives-airbus-helicopters-deutschland-gmbh-type-certificate-previously-held-by
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/4B946A36C21E0731862585A7003D7DE4.0001
- Page: https://openairdocs.org/proposed/FAA-2015-4497

## Summary

The FAA proposes to adopt a new airworthiness directive (AD) for Airbus Helicopters Deutschland GmbH (Airbus Helicopters) Model BO- 105A, BO-105C, BO-105S, MBB-BK 117 A-1, MBB-BK 117 A-3, MBB-BK 117 A-4, MBB-BK 117 B-1, MBB-BK 117 B-2, and MBB-BK 117 C-1 helicopters. This proposed AD would require inspecting the starter-generator electrical ground connection, retrofitting the starter-generator wire harness, and depending on model, revising the Rotorcraft Flight Manual (RFM) for your helicopter. This proposed AD was prompted by a report of a loss of electrical ground between the starter-generator and the generator voltage regulator (regulator). The proposed actions are intended to correct an unsafe condition on these products.

## Notices in this docket

- Jul 16, 2020: Notice of proposed rulemaking (NPRM). (first notice), FR document 2020-15313, comments due Sep 14, 2020 (https://www.federalregister.gov/documents/2020/07/16/2020-15313/airworthiness-directives-airbus-helicopters-deutschland-gmbh-type-certificate-previously-held-by)

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