# Proposed AD 95-NM-35-AD: Boeing Model 727-100 and -200 Series Airplanes Equipped With an Engine Nose Cowl Installed in Accordance With Supplemental Type Certificate (STC) SA4363NM

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 95-19-08
- Action: Notice of proposed rulemaking (NPRM).
- Published: May 3, 1995, 60 FR 21774
- Comments due: June 12, 1995
- Became: [AD 95-19-08](https://openairdocs.org/ad/95-19-08)
- Docket: 95-NM-35-AD
- FR document: 95-10829
- Official PDF: https://openairdocs.org/files/sha256/52/9a/529a13eb9176c9d3e308ee7622f92192f0a9aabb3c8f06d2f9434fabca6e75a4 (from https://www.govinfo.gov/content/pkg/FR-1995-05-03/pdf/95-10829.pdf)
- Federal Register: https://www.federalregister.gov/documents/1995/05/03/95-10829/airworthiness-directives-boeing-model-727-100-and--200-series-airplanes-equipped-with-an-engine-nose
- Page: https://openairdocs.org/proposed/95-NM-35-AD

## Summary

This document proposes the adoption of a new airworthiness directive (AD) that is applicable to certain Boeing Model 727-100 and - 200 series airplanes. This proposal would require replacing the attachin-nutplates on certain engine nose cowls with washers and self- locking nuts. This proposal is prompted by reports indicating that nose cowls separated (or nearly separated) from the engines of certain airplanes following failure of the engine fan blade and subsequent vibration of the engine, which caused loosening of the attach bolts on the nose cowl of the engine. The actions specified by the proposed AD are intended to prevent the attach bolts from becoming loose, which could result in subsequent separation of the nose cowl from the engine.

## Notices in this docket

- May 3, 1995: Notice of proposed rulemaking (NPRM). (first notice), FR document 95-10829, comments due Jun 12, 1995 (https://www.federalregister.gov/documents/1995/05/03/95-10829/airworthiness-directives-boeing-model-727-100-and--200-series-airplanes-equipped-with-an-engine-nose)

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.