What was found
AFTER SELECTING LG DOWN, RECEIVED HYD 3 LOW PRESS CAUTION, FOLLOWED BY GEAR DISAGREE & NOSE DOOR WARNING MESSAGE. AFTER 5 SECONDS ALL MESSAGES CLEARED ON THEIR OWN, ALL GEAR DOWN & GREEN. FLT 5253 REPLACED HYD SYS NR 3 PUMP 3A. PN ON OFF 848847, SN ON MX605967, SN OFF MX679140, PN ON OFF 848847 SN ON MX572952 & SN OFF MX563539.