# Proposed AD FAA-2019-0440: The Boeing Company Airplanes

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2019-23-12
- Products: Boeing
- Product type: Aircraft
- Action: Notice of proposed rulemaking (NPRM).
- Published: June 25, 2019, 84 FR 29815
- Comments due: August 9, 2019
- Became: [AD 2019-23-12](https://openairdocs.org/ad/2019-23-12)
- Docket: FAA-2019-0440 (https://www.regulations.gov/docket/FAA-2019-0440, where comments are filed)
- FR document: 2019-13049
- Official PDF: https://openairdocs.org/files/sha256/77/53/77538b55b30e3d6f7266d573bf8fb861545d3a21027929ac062abaf8d017c72f (from https://www.govinfo.gov/content/pkg/FR-2019-06-25/pdf/2019-13049.pdf)
- Federal Register: https://www.federalregister.gov/documents/2019/06/25/2019-13049/airworthiness-directives-the-boeing-company-airplanes
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/32F65DD083D4164C862584270055EC21.0001
- Page: https://openairdocs.org/proposed/FAA-2019-0440

## Summary

The FAA proposes to adopt a new airworthiness directive (AD) for all The Boeing Company Model 737-300, -400, and -500 series airplanes. This proposed AD was prompted by fuel system reviews conducted by the manufacturer. This proposed AD would require applying sealant to the fasteners in the fuel tanks, replacing wire bundle clamps external to the fuel tanks and installing Teflon sleeving under the clamps. The FAA is proposing this AD to address the unsafe condition on these products.

## Notices in this docket

- Jun 25, 2019: Notice of proposed rulemaking (NPRM). (first notice), FR document 2019-13049, comments due Aug 9, 2019 (https://www.federalregister.gov/documents/2019/06/25/2019-13049/airworthiness-directives-the-boeing-company-airplanes)

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