Lockheed P-3 Orion

The Lockheed P-3 Orion is a Lockheed made four engined aircraft with variations such as the P-3K, P-3C, P-3As and more. Mostly used as maritime patrol aircraft due to the probes located at the rear of the aircraft where the APU would be found on other aircraft. The aircraft runs on Rolls Royce Allison's T56-A-14 engine with Hamilton Standard 54H60-77 propeller.