Service difficulty report · Fcu · Swrngn SA226TC

Difficulty date
June 23, 2004
Submitted
December 3, 2004
Operation
General aviation
Make and model
Swrngn SA226TC
Aircraft time
35,405 hours
Engine
Garrtt TPE33110UA
Propeller
Hartzl HCE4N3
Part
Fcu
Part number
8978017
Condition
Unserviceable
Location
Engine
Stage of operation
TX
How discovered
O
Nature of condition
M
Precautionary procedure
E

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

What was found

(CAN) DURING THE ATTEMPTED ENGINE START, THE EGT ROSE RAPIDLY TOWARDS REDLINE AND THE ENGINE WAS SHUTDOWN. TOO MUCH FUEL WAS BEING INTRODUCED DURING THE START SEQUENCE THEREFORE CAUSING THE OVERTEMP PROBLEM. THE FUEL CONTROL WAS REPLACED. ENCOUNTER THIS PROBLEM NUMEROUS TIMES A YEAR WITH DIFFERENT FUEL CONTROL UNITS AND UPON RETURN TO THE MANUFACTURER FOR REPAIR THE UNIT TESTS FINE AND IS RETURNED TO SERVICE ONLY TO FAIL AGAIN A SHORT TIME LATER. THE OVERTEMP PROBLEM IS USUALLY AN INTERMITTENT FAILURE. HAVE ISSUED SEVERAL SDR'S IN THE PAST ON THIS ISSUE AND WILL CONTINUE TO DO SO AS THEY ARISE. A TEARDOWN REPORT FROM THE MFG HAS BEEN ATTACHED.