The Lockheed L-188C Electra is a pressurized, low-wing, turbo-propeller airplane that was designed as a medium-range airliner. It is powered by four Allison 501-D13 constant-speed, axial-flow, turbine engines which drive four-bladed, full-feathering, reversible-pitch, turbo propellers providing a top speed of 720 kmh and a range of 4040 km depending upon payload. Flight is approved in known icing conditions. However, external instrument installations may limit operations in icing conditions. The Lockheed L-188C carries a flight crew of three and up to 98 passengers or 26500 lbs of freight in the cabin. Research L-188C
 
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