# Proposed AD FAA-2020-0483: MD Helicopters Inc. (MDHI), Helicopters

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2020-18-20
- Products: MD Helicopters
- Product type: Aircraft
- Action: Notice of proposed rulemaking (NPRM).
- Published: May 14, 2020, 85 FR 28895
- Comments due: July 13, 2020
- Became: [AD 2020-18-20](https://openairdocs.org/ad/2020-18-20)
- Docket: FAA-2020-0483 (https://www.regulations.gov/docket/FAA-2020-0483, where comments are filed)
- FR document: 2020-10246
- Official PDF: https://openairdocs.org/files/sha256/5e/ef/5eef5c42ed941c1eeca0ba9e9b772b282874f9909bff62d6ac8524dc337237ef (from https://www.govinfo.gov/content/pkg/FR-2020-05-14/pdf/2020-10246.pdf)
- Federal Register: https://www.federalregister.gov/documents/2020/05/14/2020-10246/airworthiness-directives-md-helicopters-inc-mdhi-helicopters
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/216DA234CCCE504C86258568004441CA.0001
- Page: https://openairdocs.org/proposed/FAA-2020-0483

## Summary

The FAA proposes to adopt a new airworthiness directive (AD) for certain MD Helicopters Inc. (MDHI), Model 369A, 369D, 369E, 369FF, 369H, 369HE, 369HM, 369HS, 500N, and 600N helicopters. This proposed AD would require tap inspecting each main rotor (MR) blade leading edge abrasion strip and is prompted by reports of abrasion strips departing the MR blade in-flight. The proposed actions are intended to prevent an unsafe condition on these products.

## Notices in this docket

- May 14, 2020: Notice of proposed rulemaking (NPRM). (first notice), FR document 2020-10246, comments due Jul 13, 2020 (https://www.federalregister.gov/documents/2020/05/14/2020-10246/airworthiness-directives-md-helicopters-inc-mdhi-helicopters)

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