# Proposed AD FAA-2016-9391: The Boeing Company Airplanes

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2017-13-01
- Products: Boeing
- Product type: Aircraft
- Action: Notice of proposed rulemaking (NPRM).
- Published: November 18, 2016, 81 FR 81707
- Comments due: January 3, 2017
- Became: [AD 2017-13-01](https://openairdocs.org/ad/2017-13-01)
- Docket: FAA-2016-9391 (https://www.regulations.gov/docket/FAA-2016-9391, where comments are filed)
- Project: 2016-NM-129-AD
- FR document: 2016-27531
- Official PDF: https://openairdocs.org/files/sha256/20/cc/20cc69cc4d2d3c8dfe7a2d3c52494d56d34cb4565057551cceadec8d799a5617 (from https://www.govinfo.gov/content/pkg/FR-2016-11-18/pdf/2016-27531.pdf)
- Federal Register: https://www.federalregister.gov/documents/2016/11/18/2016-27531/airworthiness-directives-the-boeing-company-airplanes
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/827B9EA03FA2A5248625806F00567B08.0001
- Page: https://openairdocs.org/proposed/FAA-2016-9391

## Summary

We propose 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 a report of a crack in a certain body station (BS) frame inboard chord during supplemental structural inspection document (SSID) inspections. This proposed AD would require repetitive detailed and high frequency eddy current (HFEC) inspections for any crack at the frame inboard chords, and repair if necessary. We are proposing this AD to prevent the unsafe condition on these products.

## Notices in this docket

- Nov 18, 2016: Notice of proposed rulemaking (NPRM). (first notice), FR document 2016-27531, comments due Jan 3, 2017 (https://www.federalregister.gov/documents/2016/11/18/2016-27531/airworthiness-directives-the-boeing-company-airplanes)

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