# Proposed AD FAA-2023-1891: Centerpointe Aerospace Inc. Helicopters

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2024-12-10
- Products: Centerpointe Aerospace
- Product type: Aircraft
- Action: Notice of proposed rulemaking (NPRM).
- Published: October 3, 2023, 88 FR 68002
- Comments due: November 17, 2023
- Became: [AD 2024-12-10](https://openairdocs.org/ad/2024-12-10)
- Docket: FAA-2023-1891 (https://www.regulations.gov/docket/FAA-2023-1891, where comments are filed)
- Project: AD-2023-00612-R
- FR document: 2023-21684
- Official PDF: https://openairdocs.org/files/sha256/74/2d/742d55f423b3b234fefe51bd5a0528c89faaf18c2aa15fe56902ec13f0065201 (from https://www.govinfo.gov/content/pkg/FR-2023-10-03/pdf/2023-21684.pdf)
- Federal Register: https://www.federalregister.gov/documents/2023/10/03/2023-21684/airworthiness-directives-centerpointe-aerospace-inc-helicopters
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/FR-ADNPRM-2023-21684-00000000000.0001
- Page: https://openairdocs.org/proposed/FAA-2023-1891

## Summary

The FAA proposes to adopt a new airworthiness directive (AD) for all Centerpointe Aerospace Inc. (Centerpointe) Model S-58BT, S- 58DT, S-58ET, S-58FT, S-58HT, and S-58JT helicopters. This proposed AD was prompted by an indication of a crack on the angle gearbox mount (AGBM). This proposed AD would require repetitively performing a fluorescent penetrant inspection (FPI) and depending on the results, removing the AGBM from service. The FAA is proposing this AD to address the unsafe condition on these products.

## Notices in this docket

- Oct 3, 2023: Notice of proposed rulemaking (NPRM). (first notice), FR document 2023-21684, comments due Nov 17, 2023 (https://www.federalregister.gov/documents/2023/10/03/2023-21684/airworthiness-directives-centerpointe-aerospace-inc-helicopters)

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