* = Aircraft originally manufactured with conventional round instruments, known as "Round Eyes". All above 17 1956 "A" models were originally committed as TEST or BAILMENT aircraft.
# = Aircraft upgraded from "TEST-TO-TACTICAL" with vertical instruments in 1961 by returning to Convair for rework. The aircraft's fuselage were actually cut in half at station 412 (Aft bulkhead in the missile bay) and a new fuselage, cockpit section, & nose section was installed with the latest production avionics, the same as the last F-106A 59-0148 version & 59-0165 for the F-106B version. A total of 35 aircraft (28 "A" models & 7 "B" models) were converted from Test-To-Tactical and reassigned to various ADC units. Click here for the Convair "Test-To-Tac" Modification Schedule.
