Cessna 320 Skyknight

$67,000 turbocharged monoplane introduced in 1961

Overview

Cessna United States ICAO: C320 1961–1969 Active $67,000 (1961)

The 320 Skynight was a large, refined aircraft produced by Cessna. It features a wider cabin and also boasts turbocharging, one of the numerous areas in which Cessna pioneered or at least persisted, where other aircraft manufacturers attempted but were not successful.

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Specifications

Units
Engine
2 × Continental TSIO-470-B
Engine type
Piston
Power
2 × 260 hp · 194 kW
Avionics
—
Wing tips
No winglets
Seats
6
Crew
—
Cabin width
3 ft 11 in  ·  1.20 m
Cabin height
3 ft 11 in  ·  1.20 m
Cabin length
8 ft 6 in  ·  2.60 m
Exterior length
29 ft 2 in  ·  8.90 m
Tail height
10 ft 3 in  ·  3.12 m
Fuselage diameter
4 ft 3 in  ·  1.30 m
Wing span
36 ft 8 in  ·  11.18 m
Baggage volume
4 ft³  ·  0.1 m³
Gross weight
—
Empty weight
—
Max takeoff weight
5,000 lb  ·  2,250 kg
Max landing weight
3,200 lb  ·  1,450 kg
Max payload
1,800 lb  ·  800 kg
Fuel capacity
130 gal · 500 L · 400 kg (AvGas)
Max cruise speed
240 kt  ·  276 mph  ·  444 km/h
Maximum speed
—
Cruise speed
—
Approach speed
68 kt  ·  78 mph  ·  126 km/h
Range
740 nm  ·  850 mi  ·  1,370 km
Fuel burn
—
Ceiling
28,100 ft  ·  8,600 m
Rate of climb
1,820 ft/min  ·  9 m/s
Takeoff distance
1,360 ft  ·  410 m
Landing distance
1,710 ft  ·  520 m
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1963 Cessna 320B Skyknight

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Operational Context

The 320 Skynight was developed out of efforts of Cessna to produce a heavier variant of the 310 model. The initial Skynight features supercharged engines for better performance. In 1963, the canted wingtip tanks were incorporated. In 1966, engine power was increased from 260 to 285 horsepower.

The later models had extended engine nacelles for added baggage capacity, a roomier cabin with a larger glass area, and other modifications. Despite these added features, the aircraft’s gross weight is just 100 pounds heavier compared to the Cessna 310. Also, it features a cruise speed approximately 17% greater due to its capability to fly at higher altitudes with good performance.

From 1963 to 1968, the Skynight introduced several variants starting with the 320A with canted fuel tanks, 47 of this type were built. The 320B has nacelle baggage lockers; 62 aircraft were built. The 320C features a longer cabin and an optional seventh seat; 73 of this type were built.

The 320D Executive is equipped with reshaped rear windows and TSIO-520-B engines; 130 were built. The 320E Executive has a pointed nose, single-piece windshield, improved landing gear, and an increase in take-off weight; 110 were built. The 320F Executive is the last version that features solid-state voltage regulators, double-pane windows, and a soundproofed configuration; 45 were built.

The Skynight has a maximum cruising speed of 240 knots and a range of 740 nautical miles. It can fly up to 28,100 feet and has a climb rate of 1,820 feet per minute. It has a takeoff and landing distance of 414 meters and 521 meters respectively.

The maximum take-off weight is 2263 kg while the maximum landing weight is 1,446 kg. It has a maximum payload of 816 kg and a fuel capacity of 133 US gal.

The aircraft could carry a maximum of six persons on board. It has an exterior length of 8.9 meters, a height of 2.18 meters, and a fuselage diameter of 1.3 meters. The wheelbase is 3.15 meters and the wingspan is 11.18 meters. It has a cabin length of 2.6 meters, width, and height of 1.2 meters.