# Proposed AD FAA-2022-1059: The Boeing Company Airplanes

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2022-23-12
- Products: Boeing
- Product type: Aircraft
- Action: Notice of proposed rulemaking (NPRM).
- Published: September 8, 2022, 87 FR 54927
- Comments due: October 24, 2022
- Became: [AD 2022-23-12](https://openairdocs.org/ad/2022-23-12)
- Docket: FAA-2022-1059 (https://www.regulations.gov/docket/FAA-2022-1059, where comments are filed)
- Project: AD-2022-00204-T
- FR document: 2022-19272
- Official PDF: https://openairdocs.org/files/sha256/0c/cf/0ccf760fbe2e83c62e6f2d08130e3131153baedccf98f666c56e22bf70a01f0f (from https://www.govinfo.gov/content/pkg/FR-2022-09-08/pdf/2022-19272.pdf)
- Federal Register: https://www.federalregister.gov/documents/2022/09/08/2022-19272/airworthiness-directives-the-boeing-company-airplanes
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/FR-ADNPRM-2022-19272-00000000000.0001
- Page: https://openairdocs.org/proposed/FAA-2022-1059

## Summary

The FAA proposes to adopt a new airworthiness directive (AD) for all The Boeing Company Model 747-100, 747-100B, 747-100B SUD, 747- 200B, 747-200C, 747-200F, 747-300, 747-400, 747-400D, 747-400F, 747SR, and 747SP series airplanes. This proposed AD was prompted by reports that high temperature composite trim air diffuser ducts (TADD) showed composite degradation and signs of hot air leakage. This proposed AD would require a one-time low frequency eddy current (LFEC) inspection of certain center tank upper skin panels on the right and left side for any structural damage due to heat exposure, and repair if necessary. The FAA is proposing this AD to address the unsafe condition on these products.

## Notices in this docket

- Sep 8, 2022: Notice of proposed rulemaking (NPRM). (first notice), FR document 2022-19272, comments due Oct 24, 2022 (https://www.federalregister.gov/documents/2022/09/08/2022-19272/airworthiness-directives-the-boeing-company-airplanes)

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