# Proposed AD 2001-NM-17-AD: Boeing Model 747 Series Airplanes Powered by General Electric (GE) CF6-80C2 Series Engines

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2002-24-03
- Products: Boeing
- Product type: Aircraft
- Action: Notice of proposed rulemaking (NPRM).
- Published: August 30, 2002, 67 FR 55739
- Comments due: October 15, 2002
- Became: [AD 2002-24-03](https://openairdocs.org/ad/2002-24-03)
- Docket: 2001-NM-17-AD
- FR document: 02-22130
- Official PDF: https://openairdocs.org/files/sha256/34/0a/340a12cb01baac01f7a3563680a5728c53cc4a652e13bbf63363fd1c36ed6953 (from https://www.govinfo.gov/content/pkg/FR-2002-08-30/pdf/02-22130.pdf)
- Federal Register: https://www.federalregister.gov/documents/2002/08/30/02-22130/airworthiness-directives-boeing-model-747-series-airplanes-powered-by-general-electric-ge-cf6-80c2
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/1C7FEF23C67327D986256C29005B152B.0001
- Page: https://openairdocs.org/proposed/2001-NM-17-AD

## Summary

This document proposes the adoption of a new airworthiness directive (AD) that is applicable to certain Boeing Model 747 series airplanes powered by GE CF6-80C2 series engines. This proposal would require repetitive inspections and torque checks to find discrepancies of the fasteners that attach the diagonal brace fittings of the lower spar to the inboard engine struts, and modification of the fasteners if discrepancies are found. This proposal also would require eventual modification of all the fasteners, which would end the repetitive inspections and checks. This action is necessary to find and fix discrepant fasteners of the diagonal brace fittings, which could result in reduced structural integrity of the diagonal brace-to-strut attachment, and possible separation of the strut and engine from the airplane. This action is intended to address the identified unsafe condition.

## Notices in this docket

- Aug 30, 2002: Notice of proposed rulemaking (NPRM). (first notice), FR document 02-22130, comments due Oct 15, 2002 (https://www.federalregister.gov/documents/2002/08/30/02-22130/airworthiness-directives-boeing-model-747-series-airplanes-powered-by-general-electric-ge-cf6-80c2)

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