As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLIGHT 3049 DCA-GSO - AFTER TAKEOFF, CAPTAIN AND FIRST OFFICER DETECTED A BURNING ODOR IN THE COCKPIT AND CABIN. CYCLED BOTH BLEED SYSTEMS AND ODOR WENT AWAY. MAINTENANCE RAN BOTH ENGINES AND CYCLED BOTH BLEED VALVES. NO ODORS NOTED AT THIS TIME. OPS CHECK GOOD IAW AMM 36-11-05.