# Proposed AD FAA-2022-0874: The Boeing Company Airplanes

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2023-01-13
- Products: Boeing
- Product type: Aircraft
- Action: Notice of proposed rulemaking (NPRM).
- Published: August 31, 2022, 87 FR 53419
- Comments due: October 17, 2022
- Became: [AD 2023-01-13](https://openairdocs.org/ad/2023-01-13)
- Docket: FAA-2022-0874 (https://www.regulations.gov/docket/FAA-2022-0874, where comments are filed)
- Project: AD-2022-00337-T
- FR document: 2022-18759
- Official PDF: https://openairdocs.org/files/sha256/28/d8/28d8f0082dfd57478919475e7d246ce573fb1dbe60504fcef95840b09dbb188a (from https://www.govinfo.gov/content/pkg/FR-2022-08-31/pdf/2022-18759.pdf)
- Federal Register: https://www.federalregister.gov/documents/2022/08/31/2022-18759/airworthiness-directives-the-boeing-company-airplanes
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/FR-ADNPRM-2022-18759-00000000000.0001
- Page: https://openairdocs.org/proposed/FAA-2022-0874

## Summary

The FAA proposes to adopt a new airworthiness directive (AD) for certain The Boeing Company Model DC-9-81 (MD-81), DC-9-82 (MD-82), DC-9-83 (MD-83), and DC-9-87 (MD-87) airplanes; and Model MD-88 airplanes. This proposed AD was prompted by an evaluation by the design approval holder (DAH) indicating that certain center wing lower stringers are subject to widespread fatigue damage (WFD). WFD analysis found that fatigue cracks could grow to a critical length after the structural modification point (SMP) for these center wing lower stringers. This proposed AD would require replacing certain left and right side center wing lower stringers. The FAA is proposing this AD to address the unsafe condition on these products.

## Notices in this docket

- Aug 31, 2022: Notice of proposed rulemaking (NPRM). (first notice), FR document 2022-18759, comments due Oct 17, 2022 (https://www.federalregister.gov/documents/2022/08/31/2022-18759/airworthiness-directives-the-boeing-company-airplanes)

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