What was found
C HYD SYS MAINT STATUS MSG CAME ON SHORT FINAL. OPERATED C1 AND C2 PUMPS ONE AT A TIME. C2 ONLY PUTTING OUT 2510 PSI. SHOULD BE 2800-3200 PSI. DEFERRED FOR NO TIME. AIR DRIVEN PUMP & C1 PUMP OK. REPLACED C HYD SYS C2 ACMP, NO HELP. SUSPECT PRESS TRANSMITTER SWITCH. PERFORMED CTR SYS INTERNAL LEAKAGE CHECK FOUND INBD AILERON WITH HEAVY CURRENT DRAW, CAPPED LT INBD PCA AND HAD NORMAL CURRENT DRAW COMPARED WITH C-1. REMOVED LT INBD PCA. REPLACED LT IB AILERON ACTUATOR. OPS CHECK GOOD. NO LEAKS. CTR HYD PRESSURE CKS NORMAL