# Proposed AD 93-ANE-07-AD: 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 2005-12-06
- Products: Teledyne Continental Motors
- Product type: Appliance
- Action: Notice of proposed rulemaking (NPRM).
- Published: December 22, 2004, 69 FR 76632
- Comments due: February 22, 2005
- Became: [AD 2005-12-06](https://openairdocs.org/ad/2005-12-06)
- Docket: 93-ANE-07-AD
- FR document: 04-27955
- Official PDF: https://openairdocs.org/files/sha256/82/2b/822bcfb3d3b8ee09bcc90a51d9f3444732fba0eb4044aa139f43686ca359b917 (from https://www.govinfo.gov/content/pkg/FR-2004-12-22/pdf/04-27955.pdf)
- Federal Register: https://www.federalregister.gov/documents/2004/12/22/04-27955/airworthiness-directives-teledyne-continental-motors-formerly-bendix-s-20-s-1200-d-2000-and-d-3000
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/C2D01A14641CB17686256F72005EFE07.0001
- Page: https://openairdocs.org/proposed/93-ANE-07-AD

## Summary

The FAA proposes to supersede an existing airworthiness directive (AD) for Teledyne Continental Motors (TCM) (formerly Bendix) S-20, S-1200, D-2000, and D-3000 series magnetos equipped with impulse couplings. That AD currently requires replacing riveted-impulse coupling assemblies, which are worn beyond limits, with serviceable riveted-impulse couplings or snap-ring impulse couplings. This proposed AD would require a reduced inspection interval for magnetos with riveted-impulse couplings installed on certain Lycoming engine models. The proposed AD would not lower the inspection interval for magnetos with snap-ring impulse couplings. This proposed AD would also limit the Applicability to certain Lycoming engine models. This proposed AD results from data provided by the manufacturer that shows a need to reduce the inspection intervals for riveted-impulse couplings used on certain Lycoming engine models. We are proposing this AD to prevent failure of the magneto impulse couplingand possible engine failure.

## Notices in this docket

- Dec 22, 2004: Notice of proposed rulemaking (NPRM). (first notice), FR document 04-27955, comments due Feb 22, 2005 (https://www.federalregister.gov/documents/2004/12/22/04-27955/airworthiness-directives-teledyne-continental-motors-formerly-bendix-s-20-s-1200-d-2000-and-d-3000)

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