# Airworthiness Directives; Boeing Model 747 Airplanes
> **Rule** · Final rule. · Published 2005-08-09 · Effective 2005-09-13 · 70 FR 46067
## Document
- **Document number:** 05-15584
- **Category:** airworthiness
- **Manufacturer:** Boeing Model 747
- **Type:** Rule
- **Action:** Final rule.
- **Citation:** 70 FR 46067
- **Publication date:** 2005-08-09
- **Effective date:** 2005-09-13
- **FAA docket:** Docket No. FAA-2005-21184
## Abstract

The FAA is adopting a new airworthiness directive (AD) for certain Boeing Model 747 airplanes. This AD requires modifying the inflation systems of the upper deck escape slides; single-piece off- wing escape ramps/slides; two-piece off-wing escape slides; and door 1, 2, 4, and 5 escape slides/rafts. This AD results from a report of 30- to 60-second delays in the inflation of escape slides/rafts. We are issuing this AD to prevent actuation delays in the inflation systems of the escape slides/rafts, which could result in delayed or failed deployment of escape slides/rafts during emergency evacuation of an airplane.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2005/08/09/05-15584/airworthiness-directives-boeing-model-747-airplanes)
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