What was found
DISCREPANCY: REFERENCE LP 239748 AIRCRAFT WAS GROUNDED AS A RESULT OF AN SDR REPORTABLE EVENT.ON DESCENT COCKPIT & FWD CABIN DETECTED BURNT ORDER. COMPLETED THE ELIMINATION OF ORDOR PROCEDURES DETERMINED PACK 1 WAS RESPONSIBLE FOR ODOR. CORRECTIVE ACTION: PERFORMED LEVEL A DECONTAMINATION WITH APU BURN. VERIFIED BY MAINTENANCE AND CREW NOSMELL EMITTED FROM PACK. RETURNED TO SERVICE AMM 21-00-00-615-802-A - IAW TSM 05-50-00-810-834-A & AMM 21-00-00-615-802//END//