What was found
PDIS 308 21-50 7643 21MAR21 IND FACT U LOGPAGES:3203672 NOTE: AFTER STARTING APU AND TURNING ON PACKS AN ODD SMELL EMINATED FROM THE AIR VENTS. SMELLED LIKE TURPINTINE TO THE CAPT AND GASOLINE TO FO. HAPPENED TWICE. LASTED 5 MINS. SHGN 21MAR21 03:28 IND U PER DEBRIEF: CREW FLEW PLANE YESTERDAY ALSO AND NOTICED THE SMELL AFTER STARTUP BUT SINCE IT CLEARED AFTER ABOUT FIVE MINUTES THOUGHT IT WAS SOMETHING EXTERNAL. CAPT MENTIONED HE HAD BLEED AIR AND PACKS SELECTED ON DURING STARTUP SO THEY CAME ON IMMEDIATELY AFTER APU STARTED. 21MAR21 03:28 MEM R OLD DISCREPANCY : 308 / 25-50 / 0007642 FACT 21MAR21 17:40 IND U PERFORMED ADJ/TEST OF ALL 3 AC PACKS IAW MD10-30 M/M 21-00-01-5 ALSO FOLLOWED M/M 49-00-00-2 CHAP 8. OIL SMELL/SMOKE IN COCKPIT. NOTED NO ABNORMAL SMELLS. SUSPECT SMELL WAS FROM AN EXTERNAL SOURCE. ACFT OK FOR FLT.