# Proposed AD FAA-2020-0689: The Boeing Company Airplanes

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2020-26-04
- Products: Boeing
- Product type: Aircraft
- Action: Notice of proposed rulemaking (NPRM).
- Published: August 17, 2020, 85 FR 49978
- Comments due: October 1, 2020
- Became: [AD 2020-26-04](https://openairdocs.org/ad/2020-26-04)
- Docket: FAA-2020-0689 (https://www.regulations.gov/docket/FAA-2020-0689, where comments are filed)
- FR document: 2020-17837
- Official PDF: https://openairdocs.org/files/sha256/3a/84/3a840d8f3f6af186c4751c991f994ae7d8ac6be0292a867bda187554d4e76c16 (from https://www.govinfo.gov/content/pkg/FR-2020-08-17/pdf/2020-17837.pdf)
- Federal Register: https://www.federalregister.gov/documents/2020/08/17/2020-17837/airworthiness-directives-the-boeing-company-airplanes
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/6BCD129CB269E618862585C700509FD6.0001
- Page: https://openairdocs.org/proposed/FAA-2020-0689

## Summary

The FAA proposes to supersede Airworthiness Directive (AD) 2013-18-08, which applies to certain The Boeing Company Model 737-200, -200C, -300, -400, and -500 series airplanes. AD 2013-18-08 requires repetitive inspections for cracking of certain upper and lower skin panels of the fuselage, and of the fuselage skin along certain chem- milled lines, and corrective actions if necessary. AD 2013-18-08 also includes a terminating action for the repetitive inspections of certain modified or repaired areas only. Since the FAA issued AD 2013-18-08, there have been reports of additional cracking in certain horizontal and vertical chem-milled step locations outside of those identified in AD 2013-18-08. This proposed AD would continue to require repetitive inspections for cracking of the fuselage skin along certain chem-milled lines and applicable on-condition actions, and would expand the inspection area. This AD would continue to provide terminating action for repetitive inspections ofcertain modified or repaired areas. This proposed AD would also add airplanes to the applicability. The FAA is proposing this AD to address the unsafe condition on these products.

## Notices in this docket

- Aug 17, 2020: Notice of proposed rulemaking (NPRM). (first notice), FR document 2020-17837, comments due Oct 1, 2020 (https://www.federalregister.gov/documents/2020/08/17/2020-17837/airworthiness-directives-the-boeing-company-airplanes)

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