What was found
BOTH PILOTS PFD'S DISPLAYED AN AMBER IAS MESSAGE AFTER PASSING THROUGH 160 KTS. AT MINIMUM LT PILOTS IAS INDICATING 160, RT PILOTS INDICATING 166 & STANDBY INDICATING 167. ACCELERATED TO 200 KTS, SPLIT INCREASED TO ABOUT 9 KTS BETWEEN PRIMARY IAS INDICATORS WITH RT SIDE SHOWING FASTER THAN LT. DECELERATED THROUGH 160 KTS FOR LANDING, SPLIT WENT BACK DOWN TO ABOUT 5 KTS. INSPECTED PITOT TUBES AND FOUND A SMALL ROCK IN PILOTS PITOT. PURGED PITOT SYS AND REMOVED DEBRIS. WHILE PERFORMING LEAK CHECK FOUND PILOTS STATIC SYS LEAK AT DRAIN. R & R O-RING IAW THE MM 34-11-08. LEAK CHECK WAS COMPLIED WITH IAW MM 34-11-08. PITOT STATIC SYS LEAK CHECK WAS PERFORMED IAW THE FAR 91-411.