Cessna 340 (All the Details You Need)

Small commuter flying got a whole lot more enjoyable with the release of the Cessna 340 in 1972. The pressurized cabin of this light twin piston engine business aircraft was designed for optimum passenger comfort while the twin turbocharged engines delivered on performance.

Designing the Cessna 340

Cessna 340 (All the Details You Need)

With the success of the Cessna 310, Cessna saw the opportunity to build on its strengths and develop a cabin-class aircraft. The resulting 340’s pressurized cabin was spacious and was one of the first offered in a light twin aircraft. The 340 was marketed as a pressurized, supercharged version of the 310. It did well, and sales quickly outpaced that of its closest competitor – the Beechcraft Duke.

Although the Cessna 310 was billed as the primary inspiration for the Cessna 340, and its fuselage and empennage have similar lines, the 340 also shares many components with the Cessna 414. The 340’s designers used the 310’s horizontal and vertical stabilizers along with the elevator and rudder paired with the wings, flaps, ailerons, and landing gear of the 414.

Realistically, the Cessna 340 is a hybrid of a 300-series and 400-series aircraft. One of the primary reasons that it was given a 300-series number and marketed as such was so that at an original retail price of $201,000, it would be accessible to the average twin buyer.

The pressurized cabin

Cessna 340 (All the Details You Need)

As expected, the pressurized cabin is the main highlight of this aircraft. The 340 can maintain a pressure differential of 3.8 to 4.2 psi depending on the model. That means that at 13,000 feet, the cabin is pressurized to about 3,000 feet. Even in a steep descent of up to 4,000 fpm, the pressurization system can keep up.

Thanks to the pressurized cabin, the 340 can comfortably cruise between 18,000- and 21,000-feet taking advantage of the turbocharged engines’ capabilities and positioning itself at an altitude above the smaller aircraft and below the larger ones.

Variants of the Cessna 340

Cessna 340 (All the Details You Need)

The original 340 was released in 1972 at a price point of $201,000 and was powered by two 285 hp Continental TSIO-520-K engines. It turned out to be slightly underpowered, so its successor – the 340A – was outfitted with upgraded 310 hp twin TSIO-520-N engines. The $365,000 Cessna 340A was the more popular model accounting for 948 of the 1,351 Cessna 340s that were built.

In 1979, Cessna tried out an unpressurized version – the 335 – in an attempt to provide some of the features of the 340 at a lower price point, however the 335 was not a commercial success and only 65 aircraft of this variant were ever produced. It turns out that the 340s key selling point truly was its pressurized cabin and potential customers did not see the value of an unpressurized version. Cessna shifted focus back to the well-received 340A model instead.

Other spin-off variants included the Riley Jet Prop 340, Riley Rocket 340, and Riley Super 340.

Modifications to the Cessna 340

Cessna 340 (All the Details You Need)

Owners of a Cessna 340 have plenty of mods they can do to improve the aircraft even further. Engine modification, enhanced turbocharger intercooling systems, STOL kits, speed brakes, and control improving vortex generators rank among the top owner improvements.

Cessna 340A Specifications

  • Engine: 2 x Continental TSIO-520-NB
  • Horsepower: 310 hp each
  • Propellers: McCauley CS/76in. 3-bland-constant-speed
  • Length: 34 feet 4 inches
  • Height: 12 feet 7 inches
  • Wing Span: 38 feet 1 inch
  • Wing Area: 184 square feet
  • Wing Loading: 32.6 pounds/square foot
  • Power Loading: 9.7 pounds/horsepower
  • Seats: 1 pilot and 5 passengers
  • Cabin Height: 49 inches
  • Cabin Width: 46.5 inches
  • Empty Weight: 4,142 pounds
  • Maximum Gross Weight: 5,990 pounds
  • Maximum Takeoff Weight: 5,990 pounds
  • Useful Load: 1,848 pounds
  • Baggage Capacity: 950/53
  • Fuel Capacity: 100 gallons plus 63-gallon reserve

Cessna 340A Performance

  • Takeoff Distance Ground Roll: 1,615 feet
  • Takeoff Over 50 ft. Obstacle: 2,175 feet
  • Rate of Climb, Sea Level: 1,650 feet per minute
  • Top Speed: 281 miles per hour
  • Cruise Speed: 230 miles per hour
  • Stall Speed: 94 mph
  • Fuel Consumption: 34 gallons per hour at 75% power
  • Endurance (65% power with 1 hr reserve): 5.5 hours
  • Range: 1,618 miles
  • Service Ceiling: 29,800 feet MSL
  • Landing Ground Roll: 770 feet
  • Landing Over 50 ft. Obstacle: 1,850 feet

Additional Reading Material

Cessna 340 Manuals and Checklists are available at PilotMall.com

Cessna 340 Manuals and Checklists

Aircraft ownership

Leave a comment

All comments are moderated before being published

Featured products

Headsets - Bose A20 Aviation Headset With Bluetooth (Battery Powered Twin Plugs)
Bose
360 View
Bose A20 Aviation Headset with Bluetooth (Battery Powered Twin Plugs)
Sale price$1,095.00
33 reviews Sold out
Aviation-Press Everything Explained for the Professional Pilot 14th Edition
Aviation-Press
🔥 New Product
Aviation-Press Everything Explained for the Professional Pilot 14th Edition
Sale price$49.99 Regular price$59.95
17 reviews In stock
Federal Aviation Regulations - ASA 2022 FAR/AIM (Print Book)
ASA
ASA 2022 FAR/AIM (Print Book)
Sale price$18.99 Regular price$19.95
3 reviews Sold out

New Products

View all
Pins Patches Lanyards Keychains - Snoopy Flying Ace Luggage Tag Set
Peanuts
💰 Save 39% Today
Snoopy Flying Ace Luggage Tag Set
Sale price$15.13 Regular price$24.95
In stock
Pins Patches Lanyards Keychains - Patch - 2021 SUN 'n FUN Embroidered Patch (Iron On Application)
SUN 'n FUN
🔥 New Product
Patch - 2021 SUN 'n FUN Embroidered Patch (Iron On Application)
Sale price$5.99
In stock
Smith & Wesson Night Guard Dual Beam Headlamp
Smith & Wesson
🔥 New Product
Smith & Wesson Night Guard Dual Beam Headlamp
Sale price$39.99 Regular price$43.99
In stock
Smith & Wesson Night Guard Dual-Beam Flashlight
Smith & Wesson
🔥 New Product
Smith & Wesson Night Guard Dual-Beam Flashlight
Sale price$24.99 Regular price$27.99
In stock
Flashlights - Smith & Wesson Captain's Galaxy Elite Dual-Beam Flashlight
Smith & Wesson
🔥 New Product
Smith & Wesson Captain's Galaxy Elite Dual-Beam Flashlight
Sale price$64.99 Regular price$67.99
In stock
Tactical Trauma Kit
Elite First Aid, Inc.
🔥 New Product
Tactical Trauma Kit
Sale price$199.95 Regular price$219.95
In stock
Casio Rangeman G-Shock Black on Black Solar Atomic Watch GW9400-1B
Casio
🔥 Hurry Only 2 left!
Casio Rangeman G-Shock Black on Black Solar Atomic Watch GW9400-1B
Sale price$330.00 Regular price$350.00
In stock
Casio G-Shock Black Watch GA900-1A
Casio
🔥 Hurry Only 1 left!
Casio G-Shock Black Watch GA900-1A
Sale price$120.00 Regular price$140.00
In stock
Casio Rangeman G-Shock Black Solar Atomic Watch GW9400-1
Casio
🔥 Hurry Only 2 left!
Casio Rangeman G-Shock Black Solar Atomic Watch GW9400-1
Sale price$330.00 Regular price$350.00
In stock
Casio Mudmaster G-Shock Military Beige Watch GG-1000-1A5CR
Casio
🔥 Hurry Only 2 left!
Casio Mudmaster G-Shock Military Beige Watch GG-1000-1A5CR
Sale price$350.00 Regular price$370.00
In stock
Casio Mudmaster G-Shock Watch GG-1000-1ACR
Casio
🔥 Hurry Only 1 left!
Casio Mudmaster G-Shock Watch GG-1000-1ACR
Sale price$350.00 Regular price$370.00
In stock
Casio Mudmaster G-Shock Carbon Core Guard Black Watch GG-B100-1B
Casio
🔥 Hurry Only 1 left!
Casio Mudmaster G-Shock Carbon Core Guard Black Watch GG-B100-1B
Sale price$380.00 Regular price$400.00
In stock