# Proposed AD FAA-2018-0901: The Boeing Company Airplanes

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2019-08-03
- Products: Boeing
- Product type: Aircraft
- Action: Notice of proposed rulemaking (NPRM).
- Published: October 16, 2018, 83 FR 52171
- Comments due: November 30, 2018
- Became: [AD 2019-08-03](https://openairdocs.org/ad/2019-08-03)
- Docket: FAA-2018-0901 (https://www.regulations.gov/docket/FAA-2018-0901, where comments are filed)
- FR document: 2018-22277
- Official PDF: https://openairdocs.org/files/sha256/4c/60/4c60816364dddf61a9d8c6ffc824f8f5a72e037fb17e06402935bf0a1616d78e (from https://www.govinfo.gov/content/pkg/FR-2018-10-16/pdf/2018-22277.pdf)
- Federal Register: https://www.federalregister.gov/documents/2018/10/16/2018-22277/airworthiness-directives-the-boeing-company-airplanes
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/D86D3195F7B247C686258328005E5EEB.0001
- Page: https://openairdocs.org/proposed/FAA-2018-0901

## Summary

We propose to adopt a new airworthiness directive (AD) for certain The Boeing Company Model 737-100, -200, -200C, -300, -400, and -500 series airplanes. This proposed AD was prompted by reports that frame web and frame integral inboard chord cracking is occurring on multiple airplanes in multiple locations below the passenger floor. This proposed AD would require repetitive detailed, general visual, and high frequency eddy current (HFEC) inspections of the section 43 lower lobe frames at certain stations; an inspection to determine if certain repairs are installed; and applicable on-condition actions. We are proposing this AD to address the unsafe condition on these products.

## Notices in this docket

- Oct 16, 2018: Notice of proposed rulemaking (NPRM). (first notice), FR document 2018-22277, comments due Nov 30, 2018 (https://www.federalregister.gov/documents/2018/10/16/2018-22277/airworthiness-directives-the-boeing-company-airplanes)

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