SDR ERAA078460

Service difficulty report · Bearing · Bolkms BO105S

Difficulty date: April 4, 2002
Submitted: April 22, 2002
Operation: General aviation
Aircraft: N130EH
Make and model: Bolkms BO105S
Aircraft serial: 558
Aircraft time: 13,915 hours
Engine: Allsn 250C20B
System (JASC): 7210 · Turbine Engine Reduction Gear
Part: Bearing
Condition: Worn
Location: Gearbox
Part time: 6,891 hours, 9,006 cycles
Stage of operation: IN
How discovered: V
Nature of condition: O
Precautionary procedure: K

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

ENGINE IS MAKING METAL. FOUND ROLLER ON 2 1/2 BEARING DAMAGED. GEARBOX PN 6894171 SN CAG-39145 INSTALLED. REPAIRED GEARBOX PN 6894171, SN CAG-23194. GEASHAFT DAMAGED, PN E23031922, SN CI-21-536, O/H OIL CHECK VALVE PN 23031856. ACTION TAKEN: INSTALLED REPAIRED GEARBOX PN 6894171, SN CAG-23194, INSTALLED NEW GEAR SHAFT, P/N E63031922, SN DG14-147, INSTALLED NEW CHECK VALVE PN 23069740.