# SDR 8PCR20151001002

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 1, 2015
- Submitted: October 1, 2015
- Operation: Air carrier
- Aircraft: [N256CA](https://openairdocs.org/aircraft/N256CA), registered now
- Make and model: Cessna 402C
- Registry model: [Cessna 402C](https://openairdocs.org/model/cessna-402c) (OpenAirDocs)
- Aircraft serial: 402C0606
- Engine: Cont TSIO520VB
- Engine time: 955 hours
- System (JASC): [8520 · Reciprocating Engine Power Section](https://openairdocs.org/jasc/8520)
- Part: Nut
- Part number: 652541
- Condition: Fractured
- Location: Engine
- 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/8PCR20151001002

## Discrepancy

DURING ROUTINE INSPECTION, A THRU-BOLT NUT, TWELVE POINT PN 652541, WAS FOUND FRACTURED & LAYING IN THE BOTTOM OF THE ENG COWLING.  THERE WERE NO SIGNS OF CORROSION ON THE NUT.  THE ENG WAS REMOVED TO BE DISASSEMBLED, INSPECTED & OVERHAULED.  THE NUT WAS RETURNED TO THE ENG MFG FOR FURTHER EXAMINATION.

---
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.