# Proposed AD 93-ANE-07: Teledyne Continental Motors (formerly Bendix) S-20, S-1200, D-2000, and D-3000 Series Magnetos

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 96-12-07
- Action: Supplemental notice of proposed rulemaking; reopening of comment period.
- Published: October 16, 1995, 60 FR 53557
- Comments due: December 15, 1995
- Became: [AD 96-12-07](https://openairdocs.org/ad/96-12-07)
- Docket: 93-ANE-07
- FR document: 95-25567
- Official PDF: https://openairdocs.org/files/sha256/64/7a/647af6ddf4496ac6b550bb3ae76f937b45a2e55ea271b8643cb8f0f576d1e781 (from https://www.govinfo.gov/content/pkg/FR-1995-10-16/pdf/95-25567.pdf)
- Federal Register: https://www.federalregister.gov/documents/1995/10/16/95-25567/airworthiness-directives-teledyne-continental-motors-formerly-bendix-s-20-s-1200-d-2000-and-d-3000
- Page: https://openairdocs.org/proposed/93-ANE-07

## Summary

This notice revises an earlier proposed airworthiness directive (AD), applicable to Teledyne Continental Motors (TCM) (formerly Bendix) S-20, S-1200, D-2000, and D-3000 series magnetos equipped with impulse couplings, that would have superseded an AD that currently requires inspections for wear, and replacement, if necessary, of the impulse coupling assemblies. The proposed rule would have retained the repetitive inspections for wear required by the current AD, but would have also required replacement, if necessary, of riveted impulse coupling assemblies with newly designed, improved, snap ring impulse coupling assemblies. In addition, the proposed AD would have required marking the magneto data plate to indicate installation of a snap ring impulse coupling assembly. Installation of snap ring impulse coupling assemblies would have constituted terminating action to the inspection requirements of the AD. That proposal was prompted by availability of an improved design for the impulse coupling assembly. This action revises the proposed rule by allowing installation of replacement serviceable riveted as well as snap ring impulse couplings. The actions specified by this proposed AD are intended to prevent magneto failure and subsequent engine failure.

## Notices in this docket

- Oct 16, 1995: Supplemental notice of proposed rulemaking; reopening of comment period. (first notice), FR document 95-25567, comments due Dec 15, 1995 (https://www.federalregister.gov/documents/1995/10/16/95-25567/airworthiness-directives-teledyne-continental-motors-formerly-bendix-s-20-s-1200-d-2000-and-d-3000)

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