# Proposed AD FAA-2003-16647: McDonnell Douglas Model DC-9-14, DC-9-15, and DC-9-15F Airplanes; Model DC-9-20, -30, -40, and -50 Series Airplanes; and Model DC-9-81 (MD-81), DC-9-82 (MD-82), DC-9-83 (MD-83), DC-9-87 (MD-87), MD-88, and MD-90-30 Airplanes

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2004-05-25
- Products: McDonnell Douglas
- Product type: Aircraft
- Action: Notice of proposed rulemaking (NPRM).
- Published: December 11, 2003, 68 FR 69051
- Comments due: January 26, 2004
- Became: [AD 2004-05-25](https://openairdocs.org/ad/2004-05-25)
- Docket: FAA-2003-16647 (https://www.regulations.gov/docket/FAA-2003-16647, where comments are filed)
- FR document: 03-30674
- Official PDF: https://openairdocs.org/files/sha256/c3/8c/c38c74f57c03e455060004e8a3265ffc1dd186813fa8cc6608d71802bd39c36f (from https://www.govinfo.gov/content/pkg/FR-2003-12-11/pdf/03-30674.pdf)
- Federal Register: https://www.federalregister.gov/documents/2003/12/11/03-30674/airworthiness-directives-mcdonnell-douglas-model-dc-9-14-dc-9-15-and-dc-9-15f-airplanes-model
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/FEA3109852641AFE86256DF9005C8A0C.0001
- Page: https://openairdocs.org/proposed/FAA-2003-16647

## Summary

This document proposes the adoption of a new airworthiness directive (AD) that is applicable to certain McDonnell Douglas airplane models. This proposal would require inspection of the captain's and first officer's seat locking pins for minimum engagement with the detent holes in the seat tracks; inspection of the seat lockpins for excessive wear; and corrective actions, if necessary. This action is necessary to prevent uncommanded seat movement during takeoff and/or landing, which could result in interference with the operation of the airplane and consequent temporary loss of control of the airplane. This action is intended to address the identified unsafe condition.

## Notices in this docket

- Dec 11, 2003: Notice of proposed rulemaking (NPRM). (first notice), FR document 03-30674, comments due Jan 26, 2004 (https://www.federalregister.gov/documents/2003/12/11/03-30674/airworthiness-directives-mcdonnell-douglas-model-dc-9-14-dc-9-15-and-dc-9-15f-airplanes-model)

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