# Airworthiness Directives; Boeing Model 747 Airplanes
> **Rule** · Final rule. · Published 2006-09-28 · Effective 2006-11-02 · 71 FR 56861
## Document
- **Document number:** 06-8227
- **Category:** airworthiness
- **Manufacturer:** Boeing Model 747
- **Type:** Rule
- **Action:** Final rule.
- **Citation:** 71 FR 56861
- **Publication date:** 2006-09-28
- **Effective date:** 2006-11-02
- **FAA docket:** Docket No. FAA-2006-24865
## Abstract

The FAA is superseding an existing airworthiness directive (AD), which applies to certain Boeing Model 747 airplanes. That AD currently requires inspections to detect disbonding, corrosion, and cracking at the longitudinal rows of fasteners in the bonded skin panels in section 41 of the fuselage, and repair, if necessary. This new AD adds airplanes to the applicability, and requires new inspections of airplanes that may have Alodine-coated rivets installed. This AD results from a report of cracking discovered in a skin lap joint that was previously inspected using the eddy current method. We are issuing this AD to prevent rapid decompression of the airplane due to disbonding and subsequent cracking of the skin panels.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2006/09/28/06-8227/airworthiness-directives-boeing-model-747-airplanes)
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