What was found
THE AIRCRAFT WAS GROUNDED. DUE TO REPORT OF CABIN ODOR , PRIOR TO NEXT FLIGHT ACCOMPLISH THE FOLLOWING. TROUBLESHOOT CABIN AIR QUALITY PER JOB CARD 26L00021001 NEEDS TO BE ACCOMPLISHED J/C 26L00021001, CABIN ODOR T/S, CHECKED APU FOR EXTERNAL OIL LEAKS WITH BLACK LIGHT. NO LEAKS NOTED. RAN ENGINES APU AS BLEED SOURCE, NO ODORS NOTED. NO THIRTY DAY HISTORY. OK FOR SERVICE.