# Proposed AD FAA-2026-2725: The Boeing Company Airplanes

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2026-21-08
- Products: Boeing
- Product type: Aircraft
- Action: Notice of proposed rulemaking (NPRM).
- Published: March 26, 2026, 91 FR 14654
- Comments due: May 11, 2026
- Became: [AD 2026-21-08](https://openairdocs.org/ad/2026-21-08)
- Docket: FAA-2026-2725 (https://www.regulations.gov/docket/FAA-2026-2725, where comments are filed)
- Project: AD-2025-00999-T
- FR document: 2026-05843
- Official PDF: https://openairdocs.org/files/sha256/0a/30/0a309faf6e7e24af21f1256a4a93e2b11ad0a1329743862c85d72d4cd6be4d25 (from https://www.govinfo.gov/content/pkg/FR-2026-03-26/pdf/2026-05843.pdf)
- Federal Register: https://www.federalregister.gov/documents/2026/03/26/2026-05843/airworthiness-directives-the-boeing-company-airplanes
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/FR-ADNPRM-2026-05843-00000000000.0001
- Page: https://openairdocs.org/proposed/FAA-2026-2725

## Summary

The FAA proposes to adopt a new airworthiness directive (AD) certain The Boeing Company Model 737-700, -700C, -800, and -900ER series airplanes. This proposed AD was prompted by a leak through the form-in-place (FiP) gasket at the engine fuel shutoff valve access panel found during a leak check. This proposed AD would require a detailed inspection of the left and right side FiP gasket at the engine fuel shutoff valve access panel, for correct sealant installation, a fluid leak test of the engine fuel shutoff valve access panels for any leak, and applicable on-condition actions. The FAA is proposing this AD to address the unsafe condition on these products.

## Notices in this docket

- Mar 26, 2026: Notice of proposed rulemaking (NPRM). (first notice), FR document 2026-05843, comments due May 11, 2026 (https://www.federalregister.gov/documents/2026/03/26/2026-05843/airworthiness-directives-the-boeing-company-airplanes)

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