As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
JFK - FLT 4754 - DURING CLIMB, CREW REPORTED A STRONG BURNING ODOR IN COCKPIT. AIRCRAFT WAS RETURNED TO JFK AND LANDED WITH NO FURTHER INCIDENTS REPORTED. MAINTENANCE COULD NOT DUPLICATE DISCREPANCY. AN OPERATIONAL CHECK OF THE PACKS WAS GOOD AND AIRCRAFT WAS RETURNED TO SERVICE. (M)