# Proposed AD FAA-2025-4000: The Boeing Company Airplanes

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2026-13-03
- Products: Boeing
- Product type: Aircraft
- Action: Notice of proposed rulemaking (NPRM).
- Published: November 17, 2025, 90 FR 51227
- Comments due: January 2, 2026
- Became: [AD 2026-13-03](https://openairdocs.org/ad/2026-13-03)
- Docket: FAA-2025-4000 (https://www.regulations.gov/docket/FAA-2025-4000, where comments are filed)
- Project: AD-2025-00440-T
- FR document: 2025-20010
- Official PDF: https://openairdocs.org/files/sha256/17/23/1723bceb9aae160a39b058f201524cf287f949c1856c4cfe7be678ec7b7de0ad (from https://www.govinfo.gov/content/pkg/FR-2025-11-17/pdf/2025-20010.pdf)
- Federal Register: https://www.federalregister.gov/documents/2025/11/17/2025-20010/airworthiness-directives-the-boeing-company-airplanes
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/FR-ADNPRM-2025-20010-00000000000.0001
- Page: https://openairdocs.org/proposed/FAA-2025-4000

## Summary

The FAA proposes to adopt a new airworthiness directive (AD) for certain The Boeing Company Model 747-8F series airplanes. This proposed AD was prompted by reports of cracking in stringers and splice fittings located at stringer splices at multiple body stations. This proposed AD would require an inspection of each free flange of the stringers at the stringer splice for radius fillers at certain fastener locations, an inspection for cracking of the stringers and stringer splice fittings at certain stringer splice locations, and applicable on-condition actions. The FAA is proposing this AD to address the unsafe condition on these products.

## Notices in this docket

- Nov 17, 2025: Notice of proposed rulemaking (NPRM). (first notice), FR document 2025-20010, comments due Jan 2, 2026 (https://www.federalregister.gov/documents/2025/11/17/2025-20010/airworthiness-directives-the-boeing-company-airplanes)

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