As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
NUMBER TWO NAV SYSTEM FAILED INFLIGHT. ''''NAV'''' FLAG WITHOUT IDENT FEATURE ON ALL VOR AND ILS FREQUENCIES. RETURNED TO SLC. INSTALLED SERVICEABLE VIR-32 NAV BOX IAW MM 34-54-00. NUMBER TWO NAV SYSTEM OPS CHECKS GOOD. (S/N 14919) ON, (S/N 10605) OFF.