# Airworthiness Directives; Boeing Model 747-400 and -400D Series Airplanes
> **Rule** · Final rule. · Published 2004-06-29 · Effective 2004-08-03 · 69 FR 38824
## Document
- **Document number:** 04-14568
- **Category:** airworthiness
- **Manufacturer:** Boeing Model 747-400 and -400D Series
- **Type:** Rule
- **Action:** Final rule.
- **Citation:** 69 FR 38824
- **Publication date:** 2004-06-29
- **Effective date:** 2004-08-03
- **FAA docket:** Docket No. 2003-NM-126-AD
## Abstract

This amendment adopts a new airworthiness directive (AD), applicable to certain Boeing Model 747-400 and -400D series airplanes, that requires an inspection to detect missing fasteners in the section 42 skin and internal doubler at the cutout for the ground exhaust valve of the electrical equipment; modification and rework of the doubler; repetitive inspections of the skin for cracks; and corrective actions if necessary; as applicable. This action is necessary to detect and correct fatigue cracks in the section 42 skin at the cutout for the ground exhaust valve of the electrical equipment, which could result in rapid decompression of the airplane. This action is intended to address the identified unsafe condition.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2004/06/29/04-14568/airworthiness-directives-boeing-model-747-400-and--400d-series-airplanes)
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