The King Air 90 series, specifically the King Air C90GTx model, is powered by two Pratt and Whitney PT6A-135A turboprop engines, each generating 550 shaft horsepower (shp). This results in a combined total of 1,100 shp for the aircraft.
Engine Specifications and Total Power
The formidable power output of the King Air C90GTx is a key factor in its performance and popularity as a versatile business and utility aircraft. Each of its two engines contributes significantly to its capabilities.
| Engine Detail | Specification |
|---|---|
| Engine Type | Pratt and Whitney PT6A-135A |
| Number of Engines | Two |
| Power per Engine | 550 shp |
| Total Horsepower | 1,100 shp |
Understanding Shaft Horsepower (SHP)
Shaft horsepower (shp) is a common unit of measurement for turboprop engines, representing the power delivered to the propeller shaft. Unlike piston engines, where horsepower directly relates to engine power output, turboprop engines convert the power generated by the turbine section into rotational force for the propeller, with some power also used to generate thrust through the exhaust. This measurement effectively quantifies the mechanical power available to drive the aircraft.
Performance and Capabilities of the King Air C90GTx
Beyond its powerful engines, the King Air C90GTx is engineered for impressive performance and operational efficiency. The twin PT6A-135A engines enable the aircraft to perform a variety of missions with reliability.
Key performance indicators include:
- Passenger Capacity: Capable of carrying up to 4 passengers with full fuel.
- Maximum Cruise Speed: Achieves a maximum cruise speed of 270 knots.
- NBAA IFR Range (Full Fuel): Offers an impressive range of 975 nautical miles for NBAA IFR operations.
These characteristics make the King Air C90GTx a robust choice for corporate travel, air ambulance services, and special mission operations, leveraging the consistent and reliable power delivered by its Pratt and Whitney engines.
For more detailed specifications, you can refer to resources like Altivation Aircraft.
