# Proposed AD FAA-2022-1170: The Boeing Company Airplanes

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2023-03-20
- Products: Boeing
- Product type: Aircraft
- Action: Notice of proposed rulemaking (NPRM).
- Published: November 4, 2022, 87 FR 66615
- Comments due: December 19, 2022
- Became: [AD 2023-03-20](https://openairdocs.org/ad/2023-03-20)
- Docket: FAA-2022-1170 (https://www.regulations.gov/docket/FAA-2022-1170, where comments are filed)
- Project: AD-2022-00023-T
- FR document: 2022-23901
- Official PDF: https://openairdocs.org/files/sha256/da/d5/dad5286bb1f9d3df40139cec1c2444d0970a63db9e814760cadca89bc0bdbb04 (from https://www.govinfo.gov/content/pkg/FR-2022-11-04/pdf/2022-23901.pdf)
- Federal Register: https://www.federalregister.gov/documents/2022/11/04/2022-23901/airworthiness-directives-the-boeing-company-airplanes
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/FR-ADNPRM-2022-23901-00000000000.0001
- Page: https://openairdocs.org/proposed/FAA-2022-1170

## Summary

The FAA proposes to adopt a new airworthiness directive (AD) for all The Boeing Company Model 747-400, -400D, and -400F series airplanes. This proposed AD was prompted by the FAA's analysis of the Model 747 airplane fuel system reviews conducted by the manufacturer, and by the determination that new or more restrictive airworthiness limitations are necessary. This proposed AD would require revising the existing maintenance or inspection program, as applicable, to incorporate new or more restrictive airworthiness limitations. The FAA is proposing this AD to address the unsafe condition on these products.

## Notices in this docket

- Nov 4, 2022: Notice of proposed rulemaking (NPRM). (first notice), FR document 2022-23901, comments due Dec 19, 2022 (https://www.federalregister.gov/documents/2022/11/04/2022-23901/airworthiness-directives-the-boeing-company-airplanes)

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