What was found
LGA - PREFLIGHT, FOUND PRIMARY STAB TRIM WOULD NOT OPERATE NORMALLY FROM THE SUITCASE HANDLES, MOTOR THERMALLY CUTS OUT AFTER ONLY SHORT USAGE 5-10 SECONDS FROM YOLK SWITCHES. FOUND 'B' PHASE C/B BAD REMOVED AND REPLACED 'B' PHASE C/B, OPS CHECK NORMAL PER A/C MM 27-40-00, AIRCRAFT OK FOR SERVICE. (M)