What was found
STANDBY AIRSPEED INDICATORS INOPERATIVE. AT 250 KTS ON BOTH PFD'S BOTH STANDBY AIRSPEED INDICATORS SHOWED 180 KTS, THIS WAS AT 10,000 FT, BOTH STANDBY AIRSPEED INDICATORS SLOWLY DECREASED DURING THE CLIMB TO FL 380, AT FL 380 BOTH PFD'S SHOWED 255 KTS, BOTH STANDBY AIRSPEED INDICATORS SHOWED 115KTS. FOUND STANDBY PITOT TUBE DRAIN HOLES OBSTRUCTED. CLEANED OUT DRAIN HOLES IAW MM 34-11-15-06. PERFORMED LEAK CHECK ON STANDBY PITOT SYS IAW MM 34-10-00-05, OPS CHECK GOOD. MX ALERT RE-ISSUED TO ADVISE PROPER PITOT COVER INSTALLATON AND REMOVALS.