The Convair 580 is a turbine powered development of the Convair 340/440. Standard Pratt and Whitney R2800 piston engine (2,000hp) Convairs were converted to take a pair of Allison 501-D turboprop engines developing 2796kW (3750ehp) and driving four-bladed propellers. Development work was carried out by PacAero Engineering Corp, the extra power allowed a gross weight increase to 53,200 lb. for take off following some structural modification including an enlarged horizontal and vertical tailplane. The conversion line was opened at Pacific Airmotive Corp. Burbank, California, following certifica-tion in 1960. The last 580 was delivered in July 1969 after 170 aircraft had been converted. In all-passenger configuration it could carry 39 passengers.
Engines: 2 x Allison 501-D turboprop, 2796kW (3750ehp).
MAUW: 53,200 lb.