# Airworthiness Directives; Boeing Model 747-100, 747-100B, 747-100B SUD, 747-200B, 747-200F, 747-300, 747-400, 747-400D, 747SP, 747SR, 767-200, 767-300, 777-200, 777-300, and 777-300ER Series Airplanes
> **Rule** · Final rule; request for comments. · Published 2006-04-11 · Effective 2006-04-17 · 71 FR 18210
## Document
- **Document number:** 06-3437
- **Category:** airworthiness
- **Type:** Rule
- **Action:** Final rule; request for comments.
- **Citation:** 71 FR 18210
- **Publication date:** 2006-04-11
- **Effective date:** 2006-04-17
- **FAA docket:** Docket No. FAA-2006-24409
## Abstract

This document publishes in the Federal Register an amendment adopting airworthiness directive (AD) 2005-05-20 that was sent previously to all known affected U.S. operators of certain Boeing Model 747-100, 747-100B, 747-100B SUD, 747-200B, 747- 200F, 747-300, 747-400, 747-400D, 747SP, 747SR, 767-200, 767-300, 777- 200, 777-300, and 777-300ER series airplanes by individual notices. This AD requires modification of certain flight deck door electronic equipment. This AD results from a report indicating that this equipment 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/2006/04/11/06-3437/airworthiness-directives-boeing-model-747-100-747-100b-747-100b-sud-747-200b-747-200f-747-300)
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