# SDR 2005FA0000677

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 10, 2004
- Submitted: May 11, 2005
- Operation: General aviation
- Aircraft: [N9SD](https://openairdocs.org/aircraft/N9SD), registered now
- Make and model: Cessna 421B
- Registry model: [Cessna 421B](https://openairdocs.org/model/cessna-421b) (OpenAirDocs)
- Aircraft serial: 421B0888
- Engine: Cont GTSIO520*
- System (JASC): [8520 · Reciprocating Engine Power Section](https://openairdocs.org/jasc/8520)
- Part: Main Bearing
- Part number: TCM634503
- Condition: Delaminated
- Location: Nr 2
- Part time: 321 hours
- Stage of operation: IN
- How discovered: V
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/2005FA0000677

## Discrepancy

BEARING CRACKED AND DELAMINATED IN NR2 MAIN BEARING SADDLE.  HEATED CRACKS IN NR2 MAIN JOURNAL.  THIS HAS BEEN NOTED ON OTHER ENGINES WE HAVE DISASSEMBLED.  BEARING BORN DATE 10-02.  THIS WAS A NEW CASE AND NO SIGNS OF FRETTING ON THE CASE HALF. (K)

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