What was found
SMELL OF EXHAUST FUMES IN FLIGHT DECK FACT 26JUL26 07:22 ROA OPERATED PACK 1&2 WITH E2 BLEED AND VERIFIED NO EXHAUST SMELL COMMING FROM PACK SYSTEM. NO DEFECTS NOTED. 26JUL26 12:41 ROA AIR LEAK WAS PREVIOUSLY FOUND TO BE ON AFT END OF APU BLEED AIR CHECK VALVE ADDITIONAL LEAK WAS FOUND TO BE IN COUPLING AT THE AFT END OF BLEED AIR PIPE WITH THE APU BLEED AIR CHECK VALVE R&R APU BLEED AIR CHECK VALVE IRW AMM 36-12-02 O-RING AT AFT COUPLING WAS FOUND TO BE BROKEN R&R AFT COUPLING O-RINGS AND REINSTALLED ASSOCIATED BLEED PIPE IRW AMM 36-11-09 RAN PACK SYSTEM OFF APU BLEED IN MULTIPLE DIFFERENT CONFIGURATIONS NO SMELL NOTED AT THIS TIME A/C OK FOR SERVICE