# Proposed AD 94-NM-252-AD: Boeing Model 747 Series Airplanes Equipped with Rolls Royce Model RB211 Series Engines

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 95-13-05
- Action: Notice of proposed rulemaking (NPRM).
- Published: February 7, 1995, 60 FR 7140
- Comments due: March 6, 1995
- Became: [AD 95-13-05](https://openairdocs.org/ad/95-13-05)
- Docket: 94-NM-252-AD
- FR document: 95-2930
- Official PDF: https://openairdocs.org/files/sha256/68/dd/68dddf5ebba21994f41e54d3f582a598cfe7d763e05606a2a398dc157b98c42a (from https://www.govinfo.gov/content/pkg/FR-1995-02-07/pdf/95-2930.pdf)
- Federal Register: https://www.federalregister.gov/documents/1995/02/07/95-2930/airworthiness-directives-boeing-model-747-series-airplanes-equipped-with-rolls-royce-model-rb211
- Page: https://openairdocs.org/proposed/94-NM-252-AD

## Summary

This document proposes the adoption of a new airworthiness directive (AD) that is applicable to certain Boeing Model 747 series airplanes. This proposal would require modification of the nacelle strut and wing structure, inspections and checks to detect discrepancies, and correction of discrepancies. This proposal is prompted by the development of a modification of the strut and wing structure that improves the fail-safe capability and durability of the strut-to-wing attachments, and reduces reliance on inspections of those attachments. The actions specified by the proposed AD are intended to prevent failure of the strut and subsequent loss of the engine.

## Notices in this docket

- Feb 7, 1995: Notice of proposed rulemaking (NPRM). (first notice), FR document 95-2930, comments due Mar 6, 1995 (https://www.federalregister.gov/documents/1995/02/07/95-2930/airworthiness-directives-boeing-model-747-series-airplanes-equipped-with-rolls-royce-model-rb211)

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