Service difficulty report · Contactor · Amtr

Difficulty date
August 26, 2021
Submitted
October 13, 2022
Operation
General aviation
Aircraft
N810RK
Make and model
Amtr
Aircraft serial
1341
Part
Contactor
Part number
STSM12
Part serial
80R67065
Condition
Failed
Location
Battery Relay
Stage of operation
IN
How discovered
9
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

THE BATTERY CONTACTOR FAILED IIN THE CLOSED POSITION. IT WAS NECESSARY FOR ME TO REMOVE THE COWL AND DISCONNECT THE BATTERY TO PREVENT THE CLOSED CONTACTOR FROM DRAINING THE BATTER. LATER WHEN TROUBLE SHOOTING THE PROBLEM IT WAS DISCOVERED THAT IF RAPPED ON CONTACTOR WITH A SMALL HAMMER WITH THE BATTERY SWITCH OFF THE CONTACTOR WOULD OPEN. FOR A YEAR TO BE DETERMINED REASON, THE CONTACTOR WOULD NOT OPEN WHEN THE GROUND WIRE FROM THE BATTERY SWITCH WS OPENED WITH THE BATTERY SWITCH. THERE IS NO VISIBLE DAMAGE TO THE EXTERIOR OR THE PART.