site in the forest outside Pegnitz was stolen in 2009. On 28 November 1971, a CH-47C carrying five crew and 28 soldiers from the 101st Airborne Division on a flight from Da Nang to Phu Bai Combat Base, South Vietnam crashed into high ground killing all onboard. On 18 October 1974, a CH-47C, US serial 74-22058 assigned 147001 but was never marked with Canadian Forces. The aircraft was lost on its delivery flight to Canada following gear failure in main combining gear box, caused by undetected metal infraction in gear blank before machining. This failure led to drive shaft failure and loss of synchronization and resulted in five fatalities. After a lengthy litigation, it was replaced by 147009. On 11 September 1982 at an airshow in Mannheim, Germany, a U.S. Army Chinook (serial number 74-22292) carrying parachutists crashed, killing 46 people. The crash was later found to have been caused by an accumulation of ground walnut shell grit used for cleaning machinery, which blocked lubrication from reaching transmission bearings. The accident resulted in the eventual discontinuation of the use of walnut grit as a cleaning agent. On 4 February 1985, a Royal Australian Air Force (RAAF) CH-47C (A15-001) crashed into Perseverance Dam, Toowoomba, Queensland, Australia. The Royal Air Force (RAF) exchange pilot was rescued from the submerged cockpit but later died in hospital. On 6 November 1986, a British International Helicopters Chinook crashed on approach to Sumburgh Airport, Shetland Islands resulting in the loss of 45 lives and the withdrawal of the Chinook from crew-servicing flights in the North Sea. On 30 October 1997, a civilian BV234UT operated by Columbia Helicopters (registration C-FHFH) engaged in logging operations crashed on Vancouver Island, Canada, killing both of the pilots. The investigation determined that the helicopter lost yaw control due to failure of flight control computer. On 1 March 1991, Major Marie Therese Rossi Cayton was killed when her U.S. Army Chinook helicopter crashed after colliding with a microwave tower during a dust storm. She was the first American woman to fly in combat during Desert Storm in 1991. On 2 June 1994, an RAF CH-47 carrying 25 British MI5, police, and military intelligence experts and 4 crew, flew from Northern Ireland to Scotland for a conference crashed on the Mull of Kintyre On 29 May 2001, a Republic of Korea Army (ROK Army) CH-47D installing a sculpture onto Olympic Bridge in Seoul,