Service difficulty report · Motor · Pilats PC1245

Difficulty date
June 28, 2010
Submitted
January 4, 2011
Operation
Air carrier
Make and model
Pilats PC1245
Aircraft time
1,723 hours
Engine
Pwa PT6A67B
Propeller
Hartzl HCE4A3D
Part
Motor
Part number
12501465
Condition
Failed
Location
A/C Pack
Part time
254 hours
Component
A/C Pack
Component part number
959902210
Stage of operation
CR
How discovered
O
Nature of condition
E
Precautionary procedure
H

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

What was found

DURING FLIGHT, SELECTED THE VAPOR CYCLE COOLING SYS (VCCS) ON, HOWEVER IT WAS EXTREMELY NOISY AND SHUT IT OFF. THE COMPRESSOR/CONDENSOR UNIT WAS FOUND TO BE THE CAUSE OF THE NOISE. MX FOUND THE COMPRESSOR MOTOR BELT COVER DESTROYED, THE BELT OFF OF BOTH PULLEYS AND PIECES OF THE MOTOR PULLEY SPREAD AROUND THE EQUIPMENT BAY. IT SEEMS THE EDGE OF THE MOTOR PULLEY FAILED ALLOWING THE BELT TO WALK OFF THE PULLEY, EATING ITS WAY THROUGH THE BELT COVER.