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  • B737/C212 en-route/manoeuvring, near Richmond NSW Australia, 2011 (Synopsis: On 5 November 2011, ATC cleared a Virgin Australia Boeing 737-700 to climb without speed restriction through an active parachute Drop Zone contrary to prevailing ATC procedures. As a result, prescribed separation from the drop zone was not maintained, but an avoiding action turn initiated by the 737 crew in VMC upon recognising the conflict eliminated any actual risk of collision with either the drop aircraft or its already-departed free-fall parachutists. The incident was attributed to a combination of inadequate controller training and inadequate ATC operational procedures.)
  • A332 / RJ1H, vicinity Zurich Switzerland, 2004 (Synopsis: On 31 October 2004, a Loss of Separation occurred between an A330-200, on a low go-around from Rwy 14 at Zurich Switzerland, and an Avro RJ100 which had been cleared for take-off on Rwy 10 and was on a convergent flight path.)
  • F16 / C150, vicinity Berkeley County SC USA, 2015 (Synopsis: On 7 July 2015, a mid-air collision occurred between an F16 and a Cessna 150 in VMC at 1,600 feet QNH in Class E airspace north of Charleston SC after neither pilot detected the conflict until it was too late to take avoiding action. Both aircraft subsequently crashed and the F16 pilot ejected. The parallel civil and military investigations conducted noted the limitations of see-and-avoid and attributed the accident to the failure of the radar controller working the F16 to provide appropriate timely resolution of the impending conflict.)
  • E145/E135, Chicago O’Hare USA, 2011 (Synopsis: On 8 August 2011, an Embraer 145 was given take off clearance from runway 32L at O’Hare in day VMC without the controller making the required check for potentially conflicting arrivals to runway 09R which pass over the runway. When the controller realised that the departing aircraft would conflict with an Embraer 135 approaching 09R, he told his aircraft to “stay low” and the runway 09R controller to send his aircraft around. Radar data indicated that the 135 on go around had crossed runway 32L about 125 feet above and just over 100 metres in front of the departing 145.)
  • B752, vicinity Atlanta GA USA, 2011 (Synopsis: On 11 March 2011, a Delta AL Boeing 757 departed Atlanta GA with no secondary radar indication visible to ATC and also failed to make contact with departure radar after accepting the frequency transfer instruction. During the eight minutes out of radio contact, it successively lost separation against two light aircraft and another passenger aircraft as it followed the cleared RNAV departure routing for eight minutes until the crew queried further climb on the TWR frequency and were invited to select their transponder on and contact the correct frequency.)