Service difficulty report · Evaporator · Snias AS350B2

Difficulty date
September 6, 2002
Submitted
June 5, 2003
Operation
General aviation
Aircraft
N5204X
Make and model
Snias AS350B2
Aircraft serial
3099
Aircraft time
1,048 hours, 2,173 cycles
Engine
Tmeca ARRIEL1D1
Engine time
1,048 hours, 1,436 cycles
Part
Evaporator
Part number
900A4031
Condition
Broken
Location
Zone 100
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

CRACKED HOUSINGS THAT CAUSE BLOWER MOTORS TO BECOME DISLODGED IN THE HOUSING, CAUSING BLOWER CAGES TO RUB ON THE HOUSING AND HOUSINGS TO BREAK APART. EVENTUAL FAILURE OF ENTIRE ASSEMBLY AND BLOWER MOTOR RENDERING THE AIRCONDITIONING SYSTEM INOPERATIVE. ONE OF HOUSING PARTS OR BLOWER CAGE PIECES COULD FALL OFF AND BECOME LODGED IN LT TAIL ROTOR CONTROL PEDDLES. THIS IS POSSIBLE DUE TO LOCATION OF EVAPORATOR ASSY, IT IS ALMOST DIRECTLY OVER TAIL ROTOR CONTROL PEDDLES ON L/H SIDE OF COCKPIT. THIS HAS TO BE PAID EVERYTIME ONE BREAKS BECAUSE UNITS ARE NOT FIELD REPAIRABLE, THEY HAVE TO BE RETURNED TO MANUFACTURER FOR REPAIR OR REPLACEMENT. WE WOULD LIKE TO RECOMEND THAT EVAPORATOR ASSY.