What was found
MIA - FLT 821 - DURING TAKEOFF, THE CAPTAIN REPORTED THE FIRST OFFICER AIR SPEED INDICATOR FROZEN AT 120 KNOTS, THE AIRCRAFT RETURNED TO MIA STATION FOR MAINTENANCE. AFTER LANDING, MAINTENANCE PERSONNEL REMOVED AND REPLACED THE FIRST OFFICER AIRSPEED INDICATOR ACCORDING TO AMM 34-11-40, PERFORMED OPERATIONAL TEST ACCORDING TO AMM 34-11-40 PAGE 501. THE AIRCRAFT WAS RETURNED TO SERVICE. (M)