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When released, the Cessna 340 the pressurised piston twin was positioned in Cessna's product line between the 310 and the eight seat 414 and 421 and competed against the Beechcraft Duke. The 340 borrowed wings from the 414 and the 310's undercarriage and a similar tail unit. Design features of the new aircraft included a pressurisation system with a differential of 4.2 psi (0.29bars) that kept the cabin's internal altitude at 8000ft while the aircraft was at 20,000ft, an all new fail safe fuselage and an integral airstair door.
Early 340s were powered by two 285hp (210kW) turbocharged Continental TSIO-520-K engines, but these were replaced on the improved 340A, with two 310hp (230kW) TSIO-520-NBs in 1976, while other improvements included reduced diameter props and a slight increase in weights. The 340A was also offered in optional 340A II and 340A III forms with various levels of IFR avionics fitted.
The Cessna 335 is an unpressurised, lighter weight and thus lower cost development of the 340. Available from 1979, aside from being unpressurised it differed in having 300hp (225kW) TSIO-520-EB engines. Although claimed by Cessna as the lowest priced cabin class business twin on the market, just 64 335s were built before production was terminated in 1980. Production of the 340 continued until 1984. |
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| Seating (normal) |
6 |
Max Takeoff (lbs) |
5,990 |
| Seating (maximum) |
- |
Certified Ceiling (ft) |
29,800 |
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| Engines |
2 Continental TSIO-520 MB |
To (Sealevel, ISA Temp) (ft) |
2,175 |
| Output lbs ea. Flat Rating |
310 shp |
Landing Distance (ft) |
1,850 |
| Maximum Mach No. |
- |
Max Range (fuel) (nm) |
1,177 |
| High Speed Cruise (Kts) |
244 |
Max Range (payload) (nm) |
535 |
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| Flight Time 300nm |
- |
Flight Time 1000nm |
- |
| Flight Time 600nm |
- |
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| External |
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Internal |
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| Length (ft) |
34.30 |
Length (ft) |
- |
| Height (ft) |
12.60 |
Height (ft) |
4.10 |
| Span (ft) |
28.10 |
Width: Max floor (ft) |
3.90 |
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