What was found
DURING TAKEOFF FROM ABQ, AT AN ALTITUDE OF 450 FT AGL THE STAB TRIM AND MACH TRIM DISCONNECTED AS SOON AS THE FLAPS WERE MOVED FROM 20 DEGREES TO 8 DEGREES. REMOVED AND REPLACED HORIZONTAL STAB ACTUATOR, MCU AND STAB TRIM SWITCH IAW 27-46-00, 27-42-61, 27-42-05, 27-42-05. PERFORMED OPERATIONAL CHECKS IAW 27-40-00, 27-42-04, 27-42-05. P/N 7062-3, S/N OFF 63.