# SDR CGHR2021011801002

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 18, 2021
- Submitted: January 18, 2021
- Operation: General aviation
- Filed by: [Elliott Aviation of the Quad Cities, LLC., repair station CGHR812C](https://openairdocs.org/faa-repair-station/CGHR812C/elliott-aviation-of-the-quad-cities-llc.md) (OpenAirDocs)
- Aircraft: [N867UP](https://openairdocs.org/aircraft/N867UP), registered now
- Make and model: Beech B300
- Registry model: [Beech B300](https://openairdocs.org/model/hawker-beechcraft-b300) (OpenAirDocs)
- Aircraft serial: FL1098
- Aircraft time: 2,365 hours
- Engine: Pwa PT6A60A
- System (JASC): [7120 · Engine Mount Section](https://openairdocs.org/jasc/7120)
- Part: Mount
- Part number: 10191012269
- Condition: Cracked
- Location: Engine
- Part time: 2,365 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/CGHR2021011801002

## Discrepancy

CRACKS HAVE BEEN FOUND IN THE FIELD DURING ROUTINE VISUAL INSPECTIONS OF ENGINE MOUNT TRUSS/COWLING MOUNT ATTACH BRACKETS.  THE CRACKS FOUND ARE ALMOST ALWAYS EXCLUSIVE TO THE UPPER RIGHT ENGINE MOUNT TRUSS (NR 1 ENGINE TRUSS UPPER INBOARD, NR 2 ENGINE TRUSS UPPER OUTBOARD).  WE BELIEVE THE CRACKS ARE OCCURRING DUE TO EXCESSIVE VIBRATION CONDITIONS OR INADEQUATE WELD QUALITY DURING MANUFACTURING PROCESS.  THE AFFECTED ENGINE TRUSS PART NUMBERS ARE: P/N’S 101-910122-53, 101-910122-69, ASSEMBLIES 130-910000-617, AND 130-910000-618.  REPAIR OPTIONS CONSIST OF COMPLYING WITH BEECHCRAFT STANDARD REPAIR TITLED-CRACK, ENGINE MOUNT TRUSS, COWLING MOUNTING BRACKETS, DRAWING NO. SR-KA-00034, REV. 1, OR REPLACING CRACKED ENGINE TRUSS WITH APPLICABLE PART NUMBER REFERENCED IN CURRENT BEECHCRAFT KING AIR 300 SERIES ILLUSTRATED PARTS CATALOG.

---
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.