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Photo © Don Boyd
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690A - Two 520kW (700shp) Garrett AiResearch TPE3315251K turboprops driving three blade constant speed propellers.
Jetprop 1000 - Two 730kW (980shp) Garrett TPE33110501Ks flat rated to 610kW (820shp).
690A - Max speed 528km/h (285kt), econ cruising speed 465km/h (251kt). Initial rate of climb 2850ft/min. Range with max payload and reserves 1370km (740nm).
1000 - Max speed 571km/h (308kt), econ cruising speed 474km/h (256kt). Initial rate of climb 2802ft/min. Max certificated altitude 35,000ft. Range with max payload and reserves 2430km (1311nm), with max fuel and reserves 3855km (2080nm).
690A - Empty 2778kg (6126lb), loaded 4650kg (10,250lb).
1000 - Empty equipped 3307kg (7289lb), max TO 5080kg (11,200lb).
690A - Wing span 14.22m (46ft 8in), length 13.52m (44ft 5in), height 4.56m (15ft 0in). Wing area 24.7m2 (266sq ft). 1000 - Wing span 15.89m (52ft 2in), length 13.10m (43ft 0in), height 4.55m (15ft 0in). Wing area 26.0m2 (279.4sq ft).
Pilot and passenger or copilot on flightdeck. Main cabin seating for six to eight. Jetprop 1000 can seat 10 in main cabin.
Total built 1121, including 138 680s, 72 681s, 541 Commander 690s, 136 Jetprop 840s, 42 Jetprop 900s, 84 Jetprop 980s, 107 Jetprop 1000s, and 1 Commander 1200. Production ceased in 1985.
Twin turboprop utility and corporate transports
The turboprop powered developments of the Aero Commander family of light twins enjoyed a two decade long production run, and were built by three companies before production ceased.
The original Turboprop Commander was based on the 680FLP, and first flew on December 31 1964, but instead of piston engines power was supplied by 450kW (605shp) Garrett AiResearch TPE331 turboprops. This initial Turbo Commander model was designated the 680T and entered production in 1965.
Progressively improved developments of the basic Turbo Commander appeared, including the 680V, which introduced an increased maximum takeoff weight, and the 680W with improved engines. Following North American Rockwell's takeover of Aero Commander and the introduction of the further improved Model 681, the name Hawk Commander was adopted for a time, but it was dropped from 1971 with the release of the 681B.
By the time of the introduction of the 681B, Rockwell was already flight testing the upgraded Turbo Commander 690, which first flew on March 3 1968 and was certificated in July 1971. Rockwell introduced the improved 690A soon after.
In 1979 Rockwell flew the Jetprop Commander 840 and 980, developments of the 690 powered by 625kW (840shp) Garrett TPE3315 and 730kW (980shp) TPE33110 turboprops respectively. These went into production with Gulfstream, who had purchased Rockwell's GA lines in 1979. The Jetprop 1000 was similar in overall dimensions but introduced a revised interior that made better use of the available space and the 980's engines. The Jetprop 900 meanwhile combined the revised interior with the 840's engines.
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