As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT IN BASE VISIT: PILOT REPORTS WITH FLAPS EXTENDED TO 15 OR 20 , SELECTING GEAR DOWN, C1 AND C2 AND CTR SYSTEM HYD LOW PRESS LIGHTS ILLUMINATED. CENTER HYD PRESS DROPPED TO 2200 PSI. MAINTENANCE REMOVED AND REPLACED ADP PRESSURE SWITCH IAW AMM 29-11-19. LEAK AND OPS CHECK GOOD.