What was found
CREW EXPERIENCED MULTIPLE AVIONIC SYSTEM FAILURES. RETURNED TO DEPARTURE. NO EMERGENCY DECLARED. R & R NR 1 CADC PRECAUTIONARY IAW AMM 34-16-01. REPLACED NR 1 CADC QUICK DISCONNECT COUPLING AND HOSE ASSY REF IPC 34-11-80-01, NR 105J AND NR 151. PERFORMED PITOT, STATIC LEAK CHECK IAW AMM 34-11-00, NO LEAKS NOTED. PERFORMED NR 1 CADC.