As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
STANDBY ATTITUDE INDICATOR TUMBLED AFTER TAKE-OFF, INACCURATE DURING FLIGHT. STBY AI SHOWED LEVEL BEFORE TAKE-OFF AND AFTER LANDING. ***** AIRCRAFT REMOVED FROM SERVICE ***** R&R STANDBY ATTITUDE IAW AMM 34-23-01. OPS CHECK GOOD AT THIS TIME. P/N 501-1567-10, S/N OFF 3031, S/N ON 2048 SMK