SDR CA101014001

Service difficulty report · Terminal · Dhav DHC6300

Difficulty date: October 12, 2010
Submitted: January 4, 2011
Operation: Air carrier
Make and model: Dhav DHC6300
System (JASC): 2497 · Electrical Power System Wiring
Part: Terminal
Condition: Loose
Location: Battery
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

DURING INSPECT OF THE REVERSE CURRENT RELAYS, IT WAS FOUND THAT DUE TO LOOSE FASTENING OF BATTERY TERMINAL BUS BAR, IT CREATED A SITUATION WHERE THE BUS BAR AND TERMINAL STUD INTERMITTENTLY CAME INTO AND OUT OF CONTACT WITH EACH OTHER. THE RESULT OF THIS WAS ONE THAT THE BUS BAR FROM THE BUS TIE RELAY AND RCR BATTERY TERMINAL STUD FASTENERS ENDED UP ARCED/WELDED TO TERMINAL STUD.