Service difficulty report · Tube · Robsin R44

Difficulty date
March 25, 2008
Submitted
April 8, 2009
Operation
General aviation
Aircraft
N157HP
Make and model
Robsin R44
Aircraft serial
11057
Aircraft time
626 hours
Part
Tube
Condition
Chafed
Location
A/C Pack
Stage of operation
NR
How discovered
O
Nature of condition
K
Precautionary procedure
O

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

What was found

FOUND WIRING TO FREEZE SWITCH HAD CHAFED THROUGH THE CAPILLARY TUBE TEMP SENSOR RELEASING ALL IT'S REFRIGERANT, CAUSING SWITCH TO OPEN AND NOT ALLOW COMPRESSOR TO RUN. SWITCH NOT FIELD REPLACEABLE, HAD TO SEND TO FACTORY FOR REPAIRS. INSTALLED SPIRAL WRAP ANTI-CHAFE TO WIRING ON REPAIRED PART TO PREVENT REOCCURRENCE. NOTIFIED PRODUCT SUPPORT OF PROBLEM AND WAS TOLD A SB WOULD BE ISSUED.