As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLIGHT 7553 DEN TO YEG CREW REPORTS STRONG SMELL OF ELECTRICAL SMOKE AT PUSH TIME. PASSENGERS WERE DEPLANED. MAINTENANCE COULD NOT DUPLICATE SMOKE SMELL. ANOTHER AC CART WAS HOOKED UP TO THE AIRCRAFT AND NO FURTHER DISCREPANCIES WERE NOTED.