# Proposed AD FAA-2005-23196: Boeing Model 747-200C, -200F, -400, - 400D, and -400F Series Airplanes

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2006-05-09
- Products: Boeing
- Product type: Aircraft
- Action: Notice of proposed rulemaking (NPRM).
- Published: December 6, 2005, 70 FR 72599
- Comments due: January 20, 2006
- Became: [AD 2006-05-09](https://openairdocs.org/ad/2006-05-09)
- Docket: FAA-2005-23196 (https://www.regulations.gov/docket/FAA-2005-23196, where comments are filed)
- Project: 2005-NM-187-AD
- FR document: 05-23654
- Official PDF: https://openairdocs.org/files/sha256/b1/c2/b1c240883de6d3fcd35430c113b3bacacba4bc5ae99226002610a0ed2d07c457 (from https://www.govinfo.gov/content/pkg/FR-2005-12-06/pdf/05-23654.pdf)
- Federal Register: https://www.federalregister.gov/documents/2005/12/06/05-23654/airworthiness-directives-boeing-model-747-200c--200f--400--400d-and--400f-series-airplanes
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/DF8E3206C4EAEC2B862570CF005C4C92.0001
- Page: https://openairdocs.org/proposed/FAA-2005-23196

## Summary

The FAA proposes to adopt a new airworthiness directive (AD) for certain Boeing Model 747-200C, -200F, -400, -400D, and -400F series airplanes. This proposed AD would require repetitive inspections for cracks in the overlapping (upper) skin, upper fastener row of the lap joints of the fuselage skin in sections 41, 42, and 46; and related investigative and corrective actions, if necessary. This proposed AD results from fatigue tests and an analysis that identified areas of the fuselage lap joints where fatigue cracks can occur. We are proposing this AD to detect and correct fatigue cracks in the overlapping (upper) skin, upper fastener row of the lap joints of the fuselage skin in sections 41, 42, and 46, which could adversely affect the structural integrity of the airplane.

## Notices in this docket

- Dec 6, 2005: Notice of proposed rulemaking (NPRM). (first notice), FR document 05-23654, comments due Jan 20, 2006 (https://www.federalregister.gov/documents/2005/12/06/05-23654/airworthiness-directives-boeing-model-747-200c--200f--400--400d-and--400f-series-airplanes)

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