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1993 Auckland mid-air collision : ウィキペディア英語版 | 1993 Auckland mid-air collision
The 1993 Auckland mid-air collision was an aircraft accident in New Zealand.〔TAIC Investigation 93-020, page 2〕 It occurred on 26 November 1993, when two aircraft operated by Airwork, under contract to the New Zealand Police, collided and crashed in central Auckland. The mid-air collision of the Aérospatiale TwinStar helicopter and Piper Archer aeroplane resulted in the deaths of all four occupants – a civilian Airwork pilot on each aircraft and two New Zealand Police officers on the helicopter. The accident occurred in daylight with excellent visibility,〔TAIC Investigation 93-020, page 5〕 in uncontrolled airspace (class G), with both aircraft flying under visual flight rules. Both the helicopter and aeroplane were operated by Airwork (NZ), and working under contract to the New Zealand Police at the time of the accident. The Transport Accident Investigation Commission investigation found the accident occurred because neither pilot saw the other aircraft.〔TAIC Investigation 93-020, page 20〕 ==Aérospatiale aircraft==
The Aérospatiale TwinStar AS 355 F1, registration ZK-HIT, was using call signs "Police One" with air traffic control and "Eagle" with police control. It was operating out of Mechanics Bay Heliport, the base of the police Air Support Unit, 1 NM east of the central city. The helicopter performed ''ad hoc'' missions around the city, usually at 1,000 feet AMSL, and on 26 November was being piloted by Ross Jeffree Harvey (aged 41), with Police Air Support Unit officers Sergeant Lindsay Eion "Lou" Grant (39) and Constable Alastair Alan Sampson (27). At 4:22 pm it returned to the heliport after a routine mission for a break of about an hour, and was logged taking off again at 5:33 pm. It departed to the north over Waitemata Harbour and shortly afterwards made a turn to the left to a southwest heading. It flew this course, climbing, for about 1 minute before making a 30° turn to the left, continuing climbing through 1,200 feet until the accident 18 seconds later.〔
抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)』 ■ウィキペディアで「1993 Auckland mid-air collision」の詳細全文を読む
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