As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON CLIMBOUT STANBY INSTRUMENT SHOWS ACFT AIRSPEED ABOVE VMO THE HIGHER AND FAST THE ACFT IS THE MORE PRONOUNCED THE VARITATION IS. INDICATES NORMAL ON GROUND. RETURNED TO FIELD. LANDING UNEVENTFUL. R & R ISI R & R STBY PITOT/STATIC PROBE NOT HELP. FOUND RUPTURED STBY PITOT LINE, REPLACED LINE, OPS CHECK GOOD NO LEAKS. RETURNED TO SERVICE.