# Proposed AD FAA-2006-24119: Boeing Model 747 Airplanes

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2006-22-09
- Products: Boeing
- Product type: Aircraft
- Action: Notice of proposed rulemaking (NPRM).
- Published: March 14, 2006, 71 FR 13055
- Comments due: April 28, 2006
- Became: [AD 2006-22-09](https://openairdocs.org/ad/2006-22-09)
- Docket: FAA-2006-24119 (https://www.regulations.gov/docket/FAA-2006-24119, where comments are filed)
- Project: 2005-NM-100-AD
- FR document: E6-3559
- Official PDF: https://openairdocs.org/files/sha256/dc/7e/dc7ed8cdfe5bc4112ebf68134b1839a0139e86d3171a0eb2c126f9dc9d55bc31 (from https://www.govinfo.gov/content/pkg/FR-2006-03-14/pdf/E6-3559.pdf)
- Federal Register: https://www.federalregister.gov/documents/2006/03/14/E6-3559/airworthiness-directives-boeing-model-747-airplanes
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/D239D12F26FD921886257131005EC7F8.0001
- Page: https://openairdocs.org/proposed/FAA-2006-24119

## Summary

The FAA proposes to adopt a new airworthiness directive (AD) for certain Boeing Model 747 airplanes. This proposed AD would require repetitive mid- and low-frequency eddy current inspections for cracks in the overlapped skin panels in the fuselage skin lap joints in sections 41, 42, 44, and 46, and corrective actions if necessary. This proposed AD is prompted by a report indicating that an operator found multiple small cracks in the overlapped skin panels in the fuselage skin lap joints. We are proposing this AD to detect and correct cracks in the overlapped skin panels, which could join together and result in reduced structural capability in the skin and consequent rapid decompression of the airplane.

## Notices in this docket

- Mar 14, 2006: Notice of proposed rulemaking (NPRM). (first notice), FR document E6-3559, comments due Apr 28, 2006 (https://www.federalregister.gov/documents/2006/03/14/E6-3559/airworthiness-directives-boeing-model-747-airplanes)

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