# Proposed AD FAA-2023-2398: The Boeing Company Airplanes

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2025-18-02
- Products: Boeing
- Product type: Aircraft
- Action: Notice of proposed rulemaking (NPRM).
- Published: December 22, 2023, 88 FR 88544
- Comments due: February 5, 2024
- Became: [AD 2025-18-02](https://openairdocs.org/ad/2025-18-02)
- Docket: FAA-2023-2398 (https://www.regulations.gov/docket/FAA-2023-2398, where comments are filed)
- Project: AD-2023-00423-T
- FR document: 2023-28153
- Official PDF: https://openairdocs.org/files/sha256/08/dd/08dd24f2842e420fbfe13475716dd156a733648bd37a2be9fa44fc0b3d71815a (from https://www.govinfo.gov/content/pkg/FR-2023-12-22/pdf/2023-28153.pdf)
- Federal Register: https://www.federalregister.gov/documents/2023/12/22/2023-28153/airworthiness-directives-the-boeing-company-airplanes
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/FR-ADNPRM-2023-28153-00000000000.0001
- Page: https://openairdocs.org/proposed/FAA-2023-2398

## Summary

The FAA proposes to adopt a new airworthiness directive (AD) for all The Boeing Company Model 787-8, 787-9, and 787-10 airplanes. This proposed AD was prompted by a report indicating that the oxygen supply tubing can become kinked when certain passenger service unit (PSU) oxygen panel assemblies are installed in the forward-most position of a center stow bin. This proposed AD would require a one- time inspection of the affected PSU oxygen panel assemblies and applicable on-condition actions. This proposed AD would also prohibit the installation of affected parts. The FAA is proposing this AD to address the unsafe condition on these products.

## Notices in this docket

- Dec 22, 2023: Notice of proposed rulemaking (NPRM). (first notice), FR document 2023-28153, comments due Feb 5, 2024 (https://www.federalregister.gov/documents/2023/12/22/2023-28153/airworthiness-directives-the-boeing-company-airplanes)

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