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Engine Upgrade Program

Cessna Caravan 208B Engine Upgrade Program

CREATING A NEW STANDARD WITH PT6A ENGINE UPGRADE PROGRAMS


Standard Benefits

  • Shorter takeoff distance
  • Increased rate of climb
  • Increased cruise speed
  • Reduced operating costs
  • Increased asset value
  • New engine warranty

Preferred Improvements presents an innovative alternative for PT6A Operators with its Engine Upgrade Programs. Upgrading to the PT6A-140 engine provides you with the benefits of Pratt & Whitney Canada’s latest technology. With improved compressor efficiency and advanced hot section materials, these upgrades will significantly improve aircraft performance, as well as provide a higher aircraft resale value.

By offering greater engine performance to your existing reliable Caravan, Preferred Improvements is creating a new standard in PT6A support.

For more information please contact Jacob Mergler at:

330-698-2249

Cessna Caravan Engine Upgrade Program

Caravan Upgrade Program

The Preferred Improvements Caravan Engine Upgrade Program replaces your existing PT6A-114/-114A engine with a factory new PT6A-140 engine. Preferred Improvements FAA Approved Supplemental Type Certificate (STC) can be installed at our facility or another shop approved by Preferred Improvements. With minimal airframe modifications, a Caravan engine upgrade allows you to achieve a 28-45% increase in shaft horsepower, reduced takeoff distance (under 1200 feet) and up to a 40% improvement in rate of climb (1,200+feet/ minute). These benefits will give you enhanced safety margins for environmental factors, including flight in known icing conditions.

Dollars & Sense

Not only do you have a faster, more powerful aircraft, but you also reduce maintenance costs with a newer and more efficient engine.


Short Field Takeoff Performance
(Cargo Pod Installed)

Stock C208B
(PT6A-114A)

Over 50’ Obstacle

PI Upgraded C208B
(PT6A-140)

Over 50’ Obstacle

Sea Level, ISA 8,750 lbs. (MTOW) 2,500 ft. 2,160 ft. (-14%)
Sea Level, ISA+20 C, 8,750 lbs. (MTOW) 2,795 ft. 2,518 ft. (-10%)
4,000 ft. Pressure Altitude, ISA, 8,750 lbs. (MTOW) 3,051 ft. 2,651 ft. (-13%)
4,000 ft. Pressure Altitude, ISA+20 C, 8,750 lbs. (MTOW) 3,447 ft. 3,353 ft. (-13%)
Climb Performance
(Cargo Pod Installed)

Stock C208B
(PT6A-114A)

ISA

ISA+20 C

PI Upgraded C208B
(PT6A-140)

ISA

ISA+20 C

Rate of climb at 4,000 ft.
853 ft./min. 666 ft./min.
1,158 ft./min. (+36%) 1,158 ft./min. (+34%)
Climb Performance
(Cargo Pod Installed)

Stock C208B
(PT6A-114A)

ISA

ISA+20 C

PI Upgraded C208B
(PT6A-140)

ISA

ISA+20 C

Cruise Speed at 12,000 ft.
171 KTAS 157 KTAS
184 KTAS (+8%) 172 KTAS (+10%)
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