# Proposed AD 95-NM-158-AD: de Havilland Model DHC-7 Series Airplanes

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 97-06-08
- Action: Notice of proposed rulemaking (NPRM).
- Published: May 22, 1996, 61 FR 25598
- Comments due: July 1, 1996
- Became: [AD 97-06-08](https://openairdocs.org/ad/97-06-08)
- Docket: 95-NM-158-AD
- FR document: 96-12728
- Official PDF: https://openairdocs.org/files/sha256/2c/dd/2cddca5324e3a1da718cda21917ad9c34e82d4be9ecbe0b5b5e95173f883996b (from https://www.govinfo.gov/content/pkg/FR-1996-05-22/pdf/96-12728.pdf)
- Federal Register: https://www.federalregister.gov/documents/1996/05/22/96-12728/airworthiness-directives-de-havilland-model-dhc-7-series-airplanes
- Page: https://openairdocs.org/proposed/95-NM-158-AD

## Summary

This document proposes the adoption of a new airworthiness directive (AD) that is applicable to all de Havilland Model DHC-7 series airplanes. This proposal would require certain structural inspections, and repair, if necessary. This proposal is prompted by a structural re-evaluation, which identified certain significant structural items to inspect for fatigue cracking as these airplanes approach and exceed the manufacturer's original design life. The actions specified by the proposed AD are intended to prevent fatigue cracking in these areas which, if not detected and corrected in a timely manner, could reduce the structural integrity of these airplanes.

## Notices in this docket

- May 22, 1996: Notice of proposed rulemaking (NPRM). (first notice), FR document 96-12728, comments due Jul 1, 1996 (https://www.federalregister.gov/documents/1996/05/22/96-12728/airworthiness-directives-de-havilland-model-dhc-7-series-airplanes)

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