# Proposed AD FAA-2019-0875: The Boeing Company Airplanes

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2020-04-11
- Products: Boeing
- Product type: Aircraft
- Action: Notice of proposed rulemaking (NPRM).
- Published: November 26, 2019, 84 FR 65034
- Comments due: January 10, 2020
- Became: [AD 2020-04-11](https://openairdocs.org/ad/2020-04-11)
- Docket: FAA-2019-0875 (https://www.regulations.gov/docket/FAA-2019-0875, where comments are filed)
- FR document: 2019-25574
- Official PDF: https://openairdocs.org/files/sha256/02/49/02499e3946d397a509ad25bba187e06edb6b0dcc864885245c7200906b2f48d6 (from https://www.govinfo.gov/content/pkg/FR-2019-11-26/pdf/2019-25574.pdf)
- Federal Register: https://www.federalregister.gov/documents/2019/11/26/2019-25574/airworthiness-directives-the-boeing-company-airplanes
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/CBD6F278C4747111862584BE004FBF1C.0001
- Page: https://openairdocs.org/proposed/FAA-2019-0875

## Summary

The FAA proposes to adopt a new airworthiness directive (AD) for certain The Boeing Company Model 747-400 series airplanes. This proposed AD was prompted by a report of a certain modification that causes interference with inspections that are intended to detect fatigue cracks. This proposed AD would require repetitive low frequency eddy current (LFEC) inspections of a certain fuselage upper skin lap splice for cracks, repetitive high frequency eddy current (HFEC) inspections of a certain fuselage upper skin lap splice for cracks, and applicable on-condition actions. The FAA is proposing this AD to address the unsafe condition on these products.

## Notices in this docket

- Nov 26, 2019: Notice of proposed rulemaking (NPRM). (first notice), FR document 2019-25574, comments due Jan 10, 2020 (https://www.federalregister.gov/documents/2019/11/26/2019-25574/airworthiness-directives-the-boeing-company-airplanes)

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