As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LT ENG SPEED CARD DURING TAXI OUT. RESET C/BS AND RE-SEATED CARD NO HELP. HARD FAULT WITH ENGS SHUTDOWN. PLACED LEFT CARD IN THE RT POSITION AND TESTED NORMAL. RE-POSITIONED CARDS TO ORIGINAL POSITION AND ALL TESTED NORMAL. AIRCRAFT WILL DEPART ON 60/60 V/F TO DKR. C/BS D15 AND D23 CYCLED DC VOLTAGE MEASURED ALL NORMAL SPEED LEFT RERACKED NO CURE. SPEEDCARD LEFT PLACED IN THE RIGHT POSITION THEN BACK TO ITS ORIGINAL PLACE STS MSG CLEARED GN ENG RUN PERF ALL NORMAL.