As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
BURNING SMELL NOTED DURING CLIMB THROUGHT CABIN LASTING APPROX 5MINS. CABIN TEMP ADJUSTMENT (LOWERING) ELIMINATED ODOR NO ODOR IN FLIGHTDECK, FLIGHT CONDUCTED 16,000 FT. REMOVED FROM SERVICE. COMPIED WITH FIM TASK 21-20-00-810-801-A. OPERATED BOTH PACKS AND APU INDIVIDUALLY NO DEFECTS NOTED WHILE ADJUSTING CABIN TEMP. DETERMINED TO BE TRANSITORY CONDITION. RETURNED TO SERVICE.