The Orion was based on the Electra airliner and was first flown in 1958. Designed as a replacement for the P-2 Neptune, the Orion has served with many airforces throughout the world. Its extreme range and ability to carry offensive weapons on up to 8 hard points make it a potent anti-submarine platform. This aircraft was acquired by Spain from the US Navy and was allocated to 221 ESC.