# Proposed AD FAA-2007-29335: McDonnell Douglas Model DC-9-81 (MD- 81), DC-9-82 (MD-82), DC-9-83 (MD-83), DC-9-87 (MD-87), and MD-88 Airplanes

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2008-13-29
- Products: McDonnell Douglas
- Product type: Aircraft
- Action: Notice of proposed rulemaking (NPRM); extension of comment period.
- Published: November 14, 2007, 72 FR 64008
- Comments due: December 3, 2007
- Became: [AD 2008-13-29](https://openairdocs.org/ad/2008-13-29)
- Docket: FAA-2007-29335 (https://www.regulations.gov/docket/FAA-2007-29335, where comments are filed)
- Project: 2007-NM-045-AD
- FR document: 07-5654
- Official PDF: https://openairdocs.org/files/sha256/b0/d9/b0d91b3687d12090bc6c79890389576cbffea8c95ce73ab87d3b62a18834959c (from https://www.govinfo.gov/content/pkg/FR-2007-11-14/pdf/07-5654.pdf)
- Federal Register: https://www.federalregister.gov/documents/2007/11/14/07-5654/airworthiness-directives-mcdonnell-douglas-model-dc-9-81-md-81-dc-9-82-md-82-dc-9-83-md-83-dc-9-87
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/15CA2570029AE0258625739300503A49.0001
- Page: https://openairdocs.org/proposed/FAA-2007-29335

## Summary

This document extends the comment period for the above- referenced NPRM, which proposes the adoption of a new airworthiness directive (AD) that applies to all McDonnell Douglas Model DC-9-81 (MD- 81), DC-9-82 (MD-82), DC-9-83 (MD-83), DC-9-87 (MD-87), and MD-88 airplanes. The NPRM would require repetitive inspections for cracking of the overwing frames from stations 845 to 905 (MD-87 stations 731 to 791), left and right sides, and corrective actions if necessary. The NPRM results from reports of cracked overwing frames. This extension of the comment period is necessary to ensure that all interested persons have ample opportunity to submit any written relevant data, views, or arguments regarding the NPRM.

## Notices in this docket

- Sep 28, 2007: Notice of proposed rulemaking (NPRM). (first notice), FR document E7-19204, comments due Nov 13, 2007 (https://www.federalregister.gov/documents/2007/09/28/E7-19204/airworthiness-directives-mcdonnell-douglas-model-dc-9-81-md-81-dc-9-82-md-82-dc-9-83-md-83-dc-9-87)
- Nov 14, 2007: Notice of proposed rulemaking (NPRM); extension of comment period., FR document 07-5654, comments due Dec 3, 2007 (https://www.federalregister.gov/documents/2007/11/14/07-5654/airworthiness-directives-mcdonnell-douglas-model-dc-9-81-md-81-dc-9-82-md-82-dc-9-83-md-83-dc-9-87)

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