What was found
PDIS 720 34-11 0002739 13OCT06 ORD CLOSE R 1ST RTO OF 2 F/O'S PFD AIRSPEED LAGGED CAPT. PFD AND BOTH STBY AIRSPEED GAUGES BY 40 KTS, THEN STOPPED INCREASING AT 200 KIAS, LATER CAPT. PFD AIRSPEED READ 300 KIAS, F/O' PFD AIRSPEED READ 200. OFF MFG 4045053-914 POS 2 SRL 86090484 TAG 24137A ON MFG 4045053-914 SRL 95051897, TAG 22A340 FACT 13OCT06 06:02 ORD R REPLACED F/O ADC AND CHECK IAW MM 34-11-34-4 RVSM STATUS REMAINS THE SAME. R/I 13OCT06 06:03 ORD R R/I FROM FACT PREMATURE REMOVAL/INSTALLATION OFF MFG 4045053-914 POS 2 SRL 86090484 AG 24137A ON MFG 4045053-914 SRL 95051897 TAG 22A340.