# SDR LDI2004F00001

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 20, 2003
- Submitted: March 25, 2004
- Operation: Air carrier
- Aircraft: N903EH
- Make and model: Bag JETSTM3101
- Aircraft serial: 605
- Engine: Garrtt TPE33110U
- System (JASC): [7261 · Turbine Engine Oil System](https://openairdocs.org/jasc/7261)
- Part: Gear Shaft
- Part number: 8968075
- Condition: Sheared
- Location: Oil Pump
- Stage of operation: NR
- How discovered: 9
- Nature of condition: R
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/LDI2004F00001

## Discrepancy

OIL PUMP SHAFT SHEARED THUS UNCOUPLING THE FUEL PUMP FROM THE ENGINES GEARBOX.  THE CRACK THAT CAUSED THE EVENTUAL SHEARING OF THE GEARSHAFT APPARENTLY ORIGINATED AT A SLOT FOR THE LOCKING KEY THAT WAS MACHINED DURING A PAST REWORK (MODIFICATION)  THAT HAD BEEN DONE TO THE PUMP.  (SW05200400286)

---
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.