411A - Two 255kW (340hp) Continental GTSIO-520-C turbocharged, geared and fuel injected flat six piston engines driving three blade constant speed propellers.
402C - Two 240kW (325hp) turbocharged and fuel injected TSIO-520-VBs.
411A - Max speed 431km/h (233kt), max cruising speed 396km/h (214kt), long range cruising speed 283km/h (153kt). Initial rate of climb 1900ft/min. Service ceiling 26,000ft. Range with no reserves and standard fuel 2003km (1081nm), with optional fuel 2310km (1247nm).
402C - Max speed 428km/h (230kt), max cruising speed 394km/h (213kt), long range cruising speed 304km/h (164kt). Initial rate of climb 1450ft/min. Service ceiling 26,900ft. Range with reserves at economical cruising speed 2360km (1273nm).
411A - Empty 1973kg (4350lb), max takeoff 2948kg (6500lb).
402C - Empty (Businessliner) 1845kg (4069lb), max takeoff 3107kg (6850lb).
411 & 401 - Standard seating for six with a centre aisle between the four main cabin seats.
402 - Six to eight seats in corporate configured Businessliner, 10 seats or freight in Utililiner.
301 Cessna 411s, 401 Cessna 404s and 1535 Cessna 402s were built.
Freighter, 10 seat commuter, or six to eight seat business twins
The 411 was Cessna's entry into the eight seat cabin class twin market that had previously been dominated by the Beech Queen Air.
Much more modern than the Queen Air, the 411 was lighter, smaller and faster. The prototype first flew in July 1962 and differed from the following production aircraft in having two blade props and direct drive engines (as opposed to the geared GTSIO-520-C engines of production aircraft). Production deliveries commenced in October 1964. Optional features for corporate configured aircraft included folding tables, a toilet and refreshment centre. The 411 was followed up by the 411A from 1967 with lighter and more efficient props and optional extra fuel capacity.
The 411 was soon after replaced by the 401 and 402, which had first been introduced in late 1966. These developments of the 411 were lighter, less powerful and had direct drive engines, and thus were less costly to operate. While the 401 and 402 were essentially the same aircraft, the 401 was optimised for corporate transport and was fitted with fewer seats than the 402, which was configured for commuter and freighter work. A number of versions of both models were developed with minor refinements, including the 402A, which had a lengthened nose, square windows and an optional 10th seat.
The 402 replaced the 401 from mid 1972, and, as the 402B, was offered in Businessliner corporate configuration, and Utililiner convertible passenger or freighter aircraft. The 402C appeared in late 1978 and featured the longer span wings from the 414A and 421C and more powerful engines. It remained in production until 1985.