US Navy 'submarine hunter' declares emergency over UK before making sudden U-turn

US Navy 'submarine hunter' declares emergency over UK before making sudden U-turn The US Navy Poseidon P-8 plane issued a 7700 squawk code - an emergency alert - this morning shortly after departing the RAF base in Lossiemouth, Moray A US Navy aircraft used to hunt submarines has declared a mid-air emergency over Scotland. The Poseidon P-8 plane departed RAF Lossiemouth in Moray shortly after 7am this morning before issuing a 7700 squawk code - the universal transponder code for a general in-flight emergency. The aircraft was tracked flying south over Central Scotland before making a U-turn and heading back towards Lossiemouth. The nature of the emergency is not yet clear. The Poseidon P-8 plane is used extensively by the US Navy, the UK Royal Air Force (operating as the Poseidon MRA1), and allied nations for long-range maritime patrol, intelligence, surveillance, and anti-submarine warfare, reports the Daily Record. RAF Lossiemouth serves as the primary home base for the UK's Poseidon fleet and frequently hosts integrated US Navy P-8A operations and support facilities covering the North Atlantic. The Mirror has contacted the US Navy and the Ministry of Defence for comment.