SDR 98ZZZX1853

Service difficulty report · Contactor · Piper PA31350

Difficulty date
May 4, 1998
Submitted
March 26, 2000
Operation
General aviation
Aircraft
N20LX
Make and model
Piper PA31350
Aircraft serial
317552121
Part
Contactor
Part number
455211
Condition
Failed
Location
Battery
Stage of operation
IN
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

WENT TO SERVICE BATTERY AND FOUND BATTERY RELAY BROKEN AND WIRES BURNED. THE SYSTEM STILL WORKED, BUT SUBMITTER DOES NOT KNOW HOW LONG RELAY EAR HAD BEEN BROKEN OFF. IT SEEMS THAT EVEN THOUGH THE EAR ON THE CONTACTOR HAD BROKEN OFF, IT WAS STILL ABLE TO MAKE CONTACT, BUT SINCE THERE WAS HIGH RESISTANCE, IT CREATED A LOT OF HEAT AND BURNED THE WIRES. THIS IS THE ORIGINAL CONTACTOR MFG 1975 BY CUTLER-HAMMER 200 AMP SP-ST 28V. SUBMITTER SUSPECTS PART MIGHT HAVE BROKEN FROM AGE

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