Rolls-Royce is market leader in the military transport aircraft sector with around half of this market worldwide. This prime position results largely from the success of the T56 and AE 2100 engines, which have powered the four-engined Lockheed Martin C-130 family since the programme began.

The AE 2100 also powers the smaller twin-engined C-27J Spartan transporter, which has been developed and certificated by LMATTS, a Lockheed Martin/Alenia joint venture.

As well as several versions of the large C-130 military transport, the T56 engine powers the Lockheed Martin P-3 Orion anti-submarine warfare aircraft, and the Northrop Grumman E-2C Hawkeye airborne early warning aircraft and its carrier-capable transport equivalent, the C-2A Greyhound.

The latest turboprop to be developed by Rolls-Royce is the TP400-D6 that will power the Airbus A400M military transporter. First engine run will take place in August 2005 with the first aircraft deliveries to commence in 2009.