Convair 580

Convair. A turboprop airliner.

Seats: Standard 50
Range: 1,700 km
Cruise: 450 km/h
Payload: 5,000 kg
Take off run: 1,200 m
Fuel burn: 819 kg per block hour
Reference price: $1,500,000 in 1976 dollars
Enters service: 1948-02-29
Production ends: 1962-01-01
Confidence: estimated (to be verified)

Source: Specifications from the type article on en.wikipedia.org as read in era4-aircraft.md; price, fuel burn, crew and maintenance cost per hour are estimates.