# Proposed AD FAA-2005-23197: McDonnell Douglas Model DC-9-10, DC-9- 20, DC-9-30, DC-9-40, and DC-9-50 Series Airplanes

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2006-07-08
- Products: McDonnell Douglas
- Product type: Aircraft
- Action: Notice of proposed rulemaking (NPRM).
- Published: December 6, 2005, 70 FR 72601
- Comments due: January 20, 2006
- Became: [AD 2006-07-08](https://openairdocs.org/ad/2006-07-08)
- Docket: FAA-2005-23197 (https://www.regulations.gov/docket/FAA-2005-23197, where comments are filed)
- Project: 2005-NM-109-AD
- FR document: 05-23655
- Official PDF: https://openairdocs.org/files/sha256/d6/b1/d6b1198b9964e29840173a756937240dc52b5b0042bb66e10b9cad2dea221623 (from https://www.govinfo.gov/content/pkg/FR-2005-12-06/pdf/05-23655.pdf)
- Federal Register: https://www.federalregister.gov/documents/2005/12/06/05-23655/airworthiness-directives-mcdonnell-douglas-model-dc-9-10-dc-9-20-dc-9-30-dc-9-40-and-dc-9-50-series
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/CA7D98D4F70F07E7862570CF005C4CA8.0001
- Page: https://openairdocs.org/proposed/FAA-2005-23197

## Summary

The FAA proposes to adopt a new airworthiness directive (AD) for certain McDonnell Douglas Model DC-9-10, DC-9-20, DC-9-30, DC-9-40, and DC-9-50 series airplanes. This proposed AD would require repetitive inspections for stress corrosion cracks of the main fuselage frame, and corrective actions if necessary. This proposed AD also would provide an optional terminating action for the repetitive inspections. This proposed AD results from several reports of cracking of the main fuselage frame. We are proposing this AD to detect and correct stress corrosion cracking of the main fuselage frame, which could result in extensive damage to adjacent structure, and reduced structural integrity of the airplane.

## Notices in this docket

- Dec 6, 2005: Notice of proposed rulemaking (NPRM). (first notice), FR document 05-23655, comments due Jan 20, 2006 (https://www.federalregister.gov/documents/2005/12/06/05-23655/airworthiness-directives-mcdonnell-douglas-model-dc-9-10-dc-9-20-dc-9-30-dc-9-40-and-dc-9-50-series)

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