What was found
IN FLIGHT (AUTO SLATS) LIGHT ILLUMINATED ACCOMANIED BY LOSS OF NR 2 AIRSPEED INDICATOR. MANUALLY PULLED (ADC 2) CIRCUT BREAKER IAW CHECKLIST. DUPLICATED, FOUND NR 2 ADC TO BE DEFECTIVE. REMOVED NR 2 ADC INSTALLED CUSTOMER SUPPLIED OVERHAULED ADC IN NR 2 ADC POSITION. C/W FUNCT. TEST & RECONNECT CHECK WITH NO DEFECTS NOTED. ALL WORK PERFORMED IAW FALCON 2000MM 34-101. ALSO C/W FLAPS/SLATS NORMAL AND AUTO MODE FUNCT. TEST. NO DEFECTS NOTED. ALL PERFORMED IAW FALCON 2000 MM. 27-803. C/W PITOT/STATIC SYS LEAK CHECK PERFORMED IAW FAR 91.411 ON 2/15/07 AND TRANSPONDER.