As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) DURING START, THE CREW NOTICED ELECTRICAL BURNING ODOR IN COCKPIT, START ABORTED WITH NO FURTHER PROBLEMS. MAINTENANCE INVESTIGATED AND DISCOVERED THE TCAS/VSI INDICATOR FAILED THE SYS TEST, AND SMELLED OF ELECTRICAL BURNING. TCAS/VSI INDICATOR REPLACED- NO FURTHER PROBLEMS.