# Proposed AD 2001-NM-279-AD: Boeing Model 747 Series Airplanes

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2005-03-01
- Products: Boeing
- Product type: Aircraft
- Action: Notice of proposed rulemaking (NPRM).
- Published: September 18, 2003, 68 FR 54680
- Comments due: November 3, 2003
- Became: [AD 2005-03-01](https://openairdocs.org/ad/2005-03-01)
- Docket: 2001-NM-279-AD
- FR document: 03-23820
- Official PDF: https://openairdocs.org/files/sha256/1a/a2/1aa2f18e6128d1ecbe5b418d2c73188b059116fbd29ccbed924496442d37f7b0 (from https://www.govinfo.gov/content/pkg/FR-2003-09-18/pdf/03-23820.pdf)
- Federal Register: https://www.federalregister.gov/documents/2003/09/18/03-23820/airworthiness-directives-boeing-model-747-series-airplanes
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/DCEB12B21CBC6C5886256DA50059B750.0001
- Page: https://openairdocs.org/proposed/2001-NM-279-AD

## Summary

This document proposes the adoption of a new airworthiness directive (AD) that is applicable to all Boeing Model 747 series airplanes. This proposal would require repetitive inspections of the nacelle strut-to-wing attachment structure, and repetitive overhaul of the diagonal brace and spring beam load paths, to maintain damage tolerance requirements and ensure long-term structural integrity; and follow-on and corrective actions if necessary. This action is necessary to ensure the structural integrity of the strut-to-wing load path and prevent separation of the strut and engine from the airplane. This action is intended to address the identified unsafe condition.

## Notices in this docket

- Sep 18, 2003: Notice of proposed rulemaking (NPRM). (first notice), FR document 03-23820, comments due Nov 3, 2003 (https://www.federalregister.gov/documents/2003/09/18/03-23820/airworthiness-directives-boeing-model-747-series-airplanes)

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