# SDR 2005FA0000569

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 15, 2005
- Submitted: April 26, 2005
- Operation: General aviation
- Engine: Cont IO550F
- System (JASC): [8520 · Reciprocating Engine Power Section](https://openairdocs.org/jasc/8520)
- Part: Bearing
- Part number: SA634503M010
- Condition: Damaged
- Location: Crankshaft
- 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/2005FA0000569

## Discrepancy

UPON DISASSEMBLY IT WAS NOTED THAT THIS BEARING SHELL IS BROKEN.  IT IS LOCATED IN NR 2 FROM REAR SADDLE.  IT APPEARS THAT THE BEARING HAS WORKED AND IS POLISHED AS RESULT:  THE CRANKSHAFT, SN C159618N HAS OVERSIZED BLADE BUSHING BOSSES.  UPON DISASSEMBLY, (LOOSE BUSHINGS) NOTE: FRETTING ON PARTING SURFACE AS A RESULT OF THE BEARING WORKING, THE BEARING TANG IN THE SADDLE HAS BEEN MALFORMED.

---
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.