As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING CRUISE FLIGHT AT FL430, HYD PRESS LITE ILLUMINATED ON ANNUNCIATOR PANEL, TWO OR THREE MINUTES LATER THE STAB MISCOMPARE LITE ALSO ILLUMINATED ON ANNUNCIATOR PANEL. COMPLIED WITH BOTH EMER/ABNORMAL CHECKLISTS. DIVERTED AND LANDED SAFELY. REMOVED AND REPLACED SPEED SWITCH WITH NEW IAW AMM 27-40-00. OPERATIONAL CHECK GOOD.