# Proposed AD FAA-2008-1072: Boeing Model 747-100, 747-100B, 747- 100B SUD, 747-200B, 747-200C, 747-200F, 747-300, 747-400, 747SR, and 747SP Series Airplanes

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2009-06-02
- Products: Boeing
- Product type: Aircraft
- Action: Notice of proposed rulemaking (NPRM).
- Published: October 8, 2008, 73 FR 58901
- Comments due: November 24, 2008
- Became: [AD 2009-06-02](https://openairdocs.org/ad/2009-06-02)
- Docket: FAA-2008-1072 (https://www.regulations.gov/docket/FAA-2008-1072, where comments are filed)
- Project: 2008-NM-109-AD
- FR document: E8-23821
- Official PDF: https://openairdocs.org/files/sha256/5f/4a/5f4aeaab6c1a8b5580023d165d716df4eb621f9091fb508a0ee7627a6fc2e12b (from https://www.govinfo.gov/content/pkg/FR-2008-10-08/pdf/E8-23821.pdf)
- Federal Register: https://www.federalregister.gov/documents/2008/10/08/E8-23821/airworthiness-directives-boeing-model-747-100-747-100b-747-100b-sud-747-200b-747-200c-747-200f
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/112570E64DE5E3CD862574DC004EFBC4.0001
- Page: https://openairdocs.org/proposed/FAA-2008-1072

## Summary

We propose to adopt a new airworthiness directive (AD) for certain Boeing Model 747-100, 747-100B, 747-100B SUD, 747-200B, 747- 200C, 747-200F, 747-300, 747-400, 747SR, and 747SP series airplanes. This proposed AD would require inspecting for skin cracks at the shear tie end fastener locations of the fuselage frames, and repair if necessary. This proposed AD results from a wide-spread fatigue damage assessment of Model 747 airplanes. We are proposing this AD to detect and correct cracks in the fuselage skin that can propagate and grow, resulting in a loss of structural integrity and a sudden decompression of the airplane during flight.

## Notices in this docket

- Oct 8, 2008: Notice of proposed rulemaking (NPRM). (first notice), FR document E8-23821, comments due Nov 24, 2008 (https://www.federalregister.gov/documents/2008/10/08/E8-23821/airworthiness-directives-boeing-model-747-100-747-100b-747-100b-sud-747-200b-747-200c-747-200f)

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