What was found
LEFT PACK HIGH PRESSURE, YELLOW AMBER CAUTION MESSAGE ON TAKEOFF. ABORTED TAKEOFF BELOW 80 KNOTS (30 KNOTS), MAX BTMS READING 3, TAKEOFF WEIGHT 44,000 LBS. PLACARDED AND PLACED ON MEL, NO RTO/HES INSPECTION REQUIRED. REMOVED AND REPLACED PRESSURE SWITCH S1HG, OPERATIONAL CHECK GOOD, IAW 21-30-00. REMOVED PLACARD, REMOVED OFF MEL. (M)