# SDR 99ZZZX4412

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 16, 1999
- Submitted: March 26, 2000
- Operation: General aviation
- Aircraft: N421KP
- Make and model: Cessna 421B
- Registry model: [Cessna 421B](https://openairdocs.org/model/cessna-421b) (OpenAirDocs)
- Aircraft serial: 421B0142
- System (JASC): [8011 · Engine Starter](https://openairdocs.org/jasc/8011)
- Part: Gear
- Condition: Damaged
- Location: Starter
- Part time: 348 hours
- Component: Cont, EQ66R2
- Stage of operation: IN
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/99ZZZX4412

## Discrepancy

STARTER ADAPTER SHAFT GEAR AT BEARING END IN ENGINE AND NEEDLE BEARING IN ENGINE DAMAGED.  NO EVIDENCE OF LACK OF LUBRICATION.  NEEDLE BEARING DESTROYED AND CASE DAMAGED.  SUBMITTER STATED THIS IS THE THIRD FAILURE OF THE EQ6642 ADAPTER IN THE LAST 2 YEARS.

---
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.