# Proposed AD FAA-2021-0331: The Boeing Company Airplanes

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2021-26-28
- Products: Boeing
- Product type: Aircraft
- Action: Notice of proposed rulemaking (NPRM).
- Published: May 10, 2021, 86 FR 24786
- Comments due: June 24, 2021
- Became: [AD 2021-26-28](https://openairdocs.org/ad/2021-26-28)
- Docket: FAA-2021-0331 (https://www.regulations.gov/docket/FAA-2021-0331, where comments are filed)
- Project: AD-2020-01703-T
- FR document: 2021-09761
- Official PDF: https://openairdocs.org/files/sha256/54/6b/546b428af2700d7415c6a49b838f9eda63f7d07f50cd0e7b2164f6f9b02c152b (from https://www.govinfo.gov/content/pkg/FR-2021-05-10/pdf/2021-09761.pdf)
- Federal Register: https://www.federalregister.gov/documents/2021/05/10/2021-09761/airworthiness-directives-the-boeing-company-airplanes
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/AF4748D2E616F4DA862586D1006308BB.0001
- Page: https://openairdocs.org/proposed/FAA-2021-0331

## Summary

The FAA proposes to adopt a new airworthiness directive (AD) for all The Boeing Company Model 757 airplanes. This proposed AD was prompted by significant changes, including new or more restrictive requirements, made to the airworthiness limitations (AWLs) related to fuel tank ignition prevention and the nitrogen generation system. 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

- May 10, 2021: Notice of proposed rulemaking (NPRM). (first notice), FR document 2021-09761, comments due Jun 24, 2021 (https://www.federalregister.gov/documents/2021/05/10/2021-09761/airworthiness-directives-the-boeing-company-airplanes)

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