SDR B3OR20020021

Service difficulty report · Bearing · Snias AS350B2

Difficulty date: November 8, 2002
Submitted: December 3, 2002
Operation: Air carrier
Aircraft: N5204X
Make and model: Snias AS350B2
Aircraft serial: 3099
Aircraft time: 1,108 hours, 1,495 cycles
Engine: Tmeca ARRIEL1D1
Engine time: 1,110 hours, 1,171 cycles
System (JASC): 2110 · Cabin Compressor System
Part: Bearing
Condition: Failed
Location: Ac Compressor
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

DURING POST FLIGHT INSPECTION TECHNICAN ROTATED MAIN ROTOR TO INSPECT. WHILE TURNING HE NOTED THAT IT WAS VERY HARD TO TURN. FURTHER TROUBLESHOOTING REVEALED THE AIR CONDITIONER COMPRESSOR BELT SLIPPING ON THE COMPRESSOR DRIVE PULLEY. THE AIR CONDITIONER COMPRESSOR CLUTCH BEARING HAD FAILED MAKING IT VERY HARD TO TURN.