Service difficulty report · Bearing · Snias AS350B3

Difficulty date
June 16, 2025
Submitted
June 17, 2025
Operation
Air carrier
Aircraft
N855MB
Make and model
Snias AS350B3
Aircraft serial
7523
Aircraft time
4,476 hours, 11,106 cycles
Part
Bearing
Part number
704A33651269
Part serial
1710258
Condition
Failed
Location
Hyd Pump
Part time
2,567 hours
Stage of operation
CR
How discovered
O
Nature of condition
J
Precautionary procedure
A

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

What was found

PILOT PERFORMED A PRECAUTIONARY LANDING FOR #2 HYDRAULICS FAILED IN FLIGHT. MECHANIC DISCOVERED THE HYDRAULIC PUMP BELT HAD SHEARED. DURING REMOVAL IT WAS DISCOVERED THE HYDRAULIC PUMP BEARING FAILED AND CAUSED THE BELT TO SHEAR. MECHANIC REMOVED AND REPLACED THE HYDRAULIC PUMP PULLEY AND BEARING ASSY AND REPLACED THE HYDRAULIC PUMP BELT. BIS.