As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SLIGHT BURNING ODOR NOTICED DURING POWER REDUCTION AT ALTITUDE. COMPLIED WITH FIM TASK 71-00-00-810-817 AND SL DH8-400-SL-012A. OPERATED BLEED AIR IAW AMM 36-11-00-710-802 FOR 30 MINS. NO ODOR NOTED. REPLACED ENGINE DRIVEN HYD PUMP FOUND TO BE LEAKING. RETURNED TO SERVICE.