What was found
DURING NORMAL CRUISE FLIGHT, THE CREW RECEIVED A WARNING INDICATION THAT ALERTED THEM A RT AC BUSS CAUTION LIGHT THAT WAS ILLUMINATED. RECEIVED A CABIN PRESSURE WARNING LIGHT. CREW DECLARED AN EMERGENCY AND DIVERTED. LANDED WITHOUT INCIDENT. UNABLE TO REPLICATE THE CABIN PRESSURE WARNING ISSUE. REPLACED THE NR 2 AC GENERATOR, AC GCU AND THE K2 RELAY AS A PRECAUTION TO PREVENT THE BUSS CAUTION LIGHT. ALL OPS CHECKED PRODUCED SATISFACTORY RESULTS AND THE ACFT WAS RETURNED TO SERVICE.