Rotorcraft production list for Sikorsky S-53

b/u
cnx
dbf
gtv
i/a
n/b

broken up
cancelled
destroyed by fire
ground test vehicle
instructional airframe
not built

ntu
prs
wfu
w/o
..??..

not taken up
preserved
withdrawn from use
written off
reg. unknown (if any)
rotorcraft not active