The Lockheed L-188 Electra is a four-engine turboprop airliner that first flew in 1957 and entered U.S. airline service in 1959. Its broad fuselage, high power, and short- to medium-range performance made it an important American turboprop transport. Structural changes developed after early whirl-mode flutter accidents restored the type's airworthiness, and converted Electras remain in specialized cargo and aerial-firefighting service.
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