# Proposed AD FAA-2023-2151: The Boeing Company Airplanes

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2025-06-02
- Products: Boeing
- Product type: Aircraft
- Action: Supplemental notice of proposed rulemaking (SNPRM).
- Published: September 20, 2024, 89 FR 77049
- Comments due: November 4, 2024
- Became: [AD 2025-06-02](https://openairdocs.org/ad/2025-06-02)
- Docket: FAA-2023-2151 (https://www.regulations.gov/docket/FAA-2023-2151, where comments are filed)
- Project: AD-2023-00984-T
- FR document: 2024-21211
- Official PDF: https://openairdocs.org/files/sha256/73/b9/73b91710a962c25e089701de973de9ffd458ac94d3f0594a339e83c70f8b3b46 (from https://www.govinfo.gov/content/pkg/FR-2024-09-20/pdf/2024-21211.pdf)
- Federal Register: https://www.federalregister.gov/documents/2024/09/20/2024-21211/airworthiness-directives-the-boeing-company-airplanes
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/FR-ADNPRM-2024-21211-00000000000.0001
- Page: https://openairdocs.org/proposed/FAA-2023-2151

## Summary

The FAA is revising a notice of proposed rulemaking (NPRM) that would apply to all The Boeing Company Model 777-200, -200LR, -300, -300ER, and 777F series airplanes. This action revises the NPRM by changing certain proposed actions from ultrasonic inspections (UT) to open hole high frequency eddy current (HFEC) inspections. The FAA is proposing this airworthiness directive (AD) to address the unsafe condition on these products. Since these actions would impose an additional burden over that in the NPRM, the FAA is requesting comments on this SNPRM.

## Notices in this docket

- Nov 17, 2023: Notice of proposed rulemaking (NPRM). (first notice), FR document 2023-25340, comments due Jan 2, 2024 (https://www.federalregister.gov/documents/2023/11/17/2023-25340/airworthiness-directives-the-boeing-company-airplanes)
- Sep 20, 2024: Supplemental notice of proposed rulemaking (SNPRM)., FR document 2024-21211, comments due Nov 4, 2024 (https://www.federalregister.gov/documents/2024/09/20/2024-21211/airworthiness-directives-the-boeing-company-airplanes)

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