# Proposed AD FAA-2020-0097: The Boeing Company Airplanes

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2020-14-03
- Products: Boeing
- Product type: Aircraft
- Action: Notice of proposed rulemaking (NPRM).
- Published: February 18, 2020, 85 FR 8776
- Comments due: April 3, 2020
- Became: [AD 2020-14-03](https://openairdocs.org/ad/2020-14-03)
- Docket: FAA-2020-0097 (https://www.regulations.gov/docket/FAA-2020-0097, where comments are filed)
- FR document: 2020-03083
- Official PDF: https://openairdocs.org/files/sha256/4c/ce/4cceab7141db8cf3a9f5ee5f4fa60fecab162d2c5881a76d22f0ada17cbc3be3 (from https://www.govinfo.gov/content/pkg/FR-2020-02-18/pdf/2020-03083.pdf)
- Federal Register: https://www.federalregister.gov/documents/2020/02/18/2020-03083/airworthiness-directives-the-boeing-company-airplanes
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/28126211BA9B9329862585120052FEC6.0001
- Page: https://openairdocs.org/proposed/FAA-2020-0097

## 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 a report that a crack indication consistent with fatigue cracking was found on the left nacelle support overwing fitting flange fastener hole during teardown of a Model 737-300 series airplane. This proposed AD would require a general visual inspection of the strut to wing diagonal brace at a certain location for cracking. For certain airplanes, this proposed AD would also require an ultrasonic inspection of certain fasteners of the nacelle support overwing fitting at a certain location for cracking. For certain other airplanes, this proposed AD would also require a magnetic check of the nacelle support overwing fitting at a certain location to determine the material composition. This proposed AD would also require applicable on-condition actions. The FAA is proposing this AD to address the unsafe condition onthese products.

## Notices in this docket

- Feb 18, 2020: Notice of proposed rulemaking (NPRM). (first notice), FR document 2020-03083, comments due Apr 3, 2020 (https://www.federalregister.gov/documents/2020/02/18/2020-03083/airworthiness-directives-the-boeing-company-airplanes)

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