The upgraded Australian Orions, designated AP-3C, were introduced in 2002. The aircraft is fitted with a variety of sensors, including digital multi-mode radar, electronic support measures, electro-optics detectors (infra-red and visual), magnetic anomaly detectors, identification friend or foe systems, and underwater acoustic detectors.
Located in the long boom at the rear of the aircraft, the Magnetic Anomaly Detector (MAD) is an incredibly sensitive device that reads fluctuations in the earth's magnetic field. Large metal objects, such as submarines, can create a local variance in the magnetic field, that when detected by the Orion's MAD, can reveal its location.
The Orion's radar system is able to scan 360° and continuously track any detected targets.
The AP-3C Orion may work alone, or in conjunction with other aircraft or ships. Wartime missions include locating and attacking enemy submarines and ships using torpedoes and Harpoon anti-shipping missiles.
Designed to be launched from over the horizon, this anti-ship weapon flies at very low altitudes and uses active radar homing to reach its target.
The Orion is also equipped with the MK-46, a lightweight torpedo designed to counter nuclear or conventional submarines. It is presently identified as the NATO standard.
The Star Safire Electro Optic unit provides high quality infra-red and visual spectrum video to the Orion's operators. Capable of detailed viewing of distant objects, even at night, it gives the aircraft excellent surveillance capabilities.