What was found
AIR INTERRUPT, DIVERTED, NO EMER WAS DECLARED, LANDING WAS UNEVENTFUL & ACFT WAS NOT OVERWEIGHT. NR 2 SOURCE OFF LIGHT ILLUMINATED IN FLIGHT. PRIOR TO SOURCE OFF LIGHT THE NR 1 TR UNIT AMPS WERE FLUCTUATING BETWEEN 5 - 0. THE TR UNIT LIGHT ILLUMINATED INTERMITTENTLY UNTIL THE NR 2 SOURCE LIGHT ILLUMINATED. NR 1 TR UNIT OPERATES NORMAL AFTER NR 2 SOURCE OFF LIGHT ILLUMINATED. REPLACED NR 2 RIGID BUSS ASSEMBLY IAW 24-21-22. PLEASE SEE AALA20150614002 & AALA20150617010 FOR ADDITIONAL PART INFORMATION.