# Airworthiness Directives; McDonnell Douglas Corporation Model DC-9-10 Series Airplanes, DC-9-30 Series Airplanes, DC-9-81 (MD-81) Airplanes, DC-9-82 (MD-82) Airplanes, DC-9-83 (MD-83) Airplanes, DC-9-87 (MD-87) Airplanes, MD-88 Airplanes, and MD-90-30 Airplanes, Equipped With Flight Deck Doors Installed in Accordance With Supplemental Type Certificate ST02463AT
> **Rule** · Final rule; request for comments. · Published 2010-08-05 · Effective 2010-08-05 · 75 FR 47199
## Document
- **Document number:** 2010-18620
- **Category:** airworthiness
- **Manufacturer:** McDonnell Douglas Corporation Model DC-9-10 Series
- **Type:** Rule
- **Action:** Final rule; request for comments.
- **Citation:** 75 FR 47199
- **Publication date:** 2010-08-05
- **Effective date:** 2010-08-05
- **FAA docket:** Docket No. FAA-2010-0702
## Abstract

The FAA is revising an existing airworthiness directive (AD), which applies to all McDonnell Douglas Model DC-9-10 series airplanes, DC-9-30 series airplanes, DC-9-81 (MD-81) airplanes, DC-9-82 (MD-82) airplanes, DC-9-83 (MD-83) airplanes, DC-9-87 (MD-87) airplanes, MD-88 airplanes, and MD-90-30 airplanes. That AD currently requires modifying the flight deck door. This AD revises the applicability by removing certain airplanes. This AD was prompted by a report indicating that certain equipment of the flight deck door is defective. We are issuing this AD to prevent failure of this equipment, which could jeopardize flight safety.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2010/08/05/2010-18620/airworthiness-directives-mcdonnell-douglas-corporation-model-dc-9-10-series-airplanes-dc-9-30-series)
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