zoggavia
Model 049S Super Constellation Prototype N67900
This aircraft was used for various modifications during its life time:
Early 1951 new
Wright R3350-CA engine was fitted in no. 4 position, outboard
vertical stabilizers enlarged by 18 inches to improve directional
control
1951 stepped
roof cockpit installed
Late 1951 first prototype R-3350 Turbo
Compound engine installed
1952 the aircraft was
fitted with two 600 US Gallon wing-tip tanks (in preparation for the turbo prop
development)
1952 R3350-CA was replaced by the updated CB
engine
1952 Aero-dynamic tests
for the Navy airborne early warning version Super Constellations
1953 DA-1 engines
installed and used as test bench to sort out the various problems with the
Turbo compound engines
1954 Allison YT-56 (for
the C-130 Hercules) was installed in the no. 4 position, c/n changed to 1961ST;
DA.-3 and EA-1 engines were fitted, the latter for the Model 1649 Starliner in
1956
1957 Allison 501 D13 was tested for the
Model188 Electra
End 1957 "old 1961" was
withdrawn from use by Lockheed
1958 parts used for the rebuild of c/n 2513, remains scrapped later