"Robert Moore" wrote in message
5.250...
"Alan Erskine" wrote

S-3 Viking. The second aircraft image is an S-1. Why wasn't there an
"S-2"?

Must have been....my logbook shows about 200 hours of pilot time in
the S2F Tracker.

Bob Moore

Oops. ;-) I meant, why wasn't there an S-1? Was it due to the 1960's
nomenclature change?