# Proposed AD FAA-2021-0196: Airbus Helicopters Deutschland GmbH Helicopters

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2021-11-09
- Products: Airbus Helicopters Deutschland
- Product type: Aircraft
- Action: Notice of proposed rulemaking (NPRM).
- Published: March 26, 2021, 86 FR 16121
- Comments due: May 10, 2021
- Became: [AD 2021-11-09](https://openairdocs.org/ad/2021-11-09)
- Docket: FAA-2021-0196 (https://www.regulations.gov/docket/FAA-2021-0196, where comments are filed)
- Project: 2018-SW-021-AD
- FR document: 2021-06214
- Official PDF: https://openairdocs.org/files/sha256/91/e9/91e985e3157b2a38a1a79aa76e040dd59f598e1b36d7cbc43791d7abca17c1a7 (from https://www.govinfo.gov/content/pkg/FR-2021-03-26/pdf/2021-06214.pdf)
- Federal Register: https://www.federalregister.gov/documents/2021/03/26/2021-06214/airworthiness-directives-airbus-helicopters-deutschland-gmbh-helicopters
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/C98EA717C3F719E9862586A4007B3083.0001
- Page: https://openairdocs.org/proposed/FAA-2021-0196

## Summary

The FAA proposes to adopt a new airworthiness directive (AD) for Airbus Helicopters Deutschland GmbH Model 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 was prompted by an analysis of the main rotor (M/R) blade loop area. This proposed AD would require repetitive inspections of certain M/R blade thimble areas and corrective actions if necessary, as specified in a European Aviation Safety Agency (now European Union Aviation Safety Agency) (EASA) AD, which is proposed for incorporation by reference (IBR). The FAA is proposing this AD to address the unsafe condition on these products.

## Notices in this docket

- Mar 26, 2021: Notice of proposed rulemaking (NPRM). (first notice), FR document 2021-06214, comments due May 10, 2021 (https://www.federalregister.gov/documents/2021/03/26/2021-06214/airworthiness-directives-airbus-helicopters-deutschland-gmbh-helicopters)

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