What was found
DMI# 550903 WITH APU BLEED ON, STRONG HYD BLACK OIL STINKY SOCK ODOR WITH PACKS ON ( APU BLEED AIR SUPPLY SYSTEM (APU AIR NOT AVAILABLE; WILL NEED GRND AIR CON AND AIR START CART) ). GROUNDED - YES. MULTIPLE INSTANCES OF APU BLEED OPERATING IN TROUBLESHOOTING TAB W/ZERO ODOR NOTED. INSPECTED APU COMPARTMENT-NO LEAKS NOTE. PACK BURN PREVIOUSLY COMPLIED WITH ON LOGPAGE 100284376-1 ON 10/17/2026. NO ODOR NOTED CURRENTLY. PLACARDS REMOVED & MIC SHEET CLEARED.