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  • C525 / B773, vicinity London City UK, 2009 (Synopsis: On 27 July 2009, a Cessna 525 departing from London City failed to comply with the initial 3000 ft QNH SID Stop altitude and at 4000 ft QNH in day VMC came into close proximity on an almost reciprocal heading with a Boeing 777-300ER. Actual minimum separation was approximately 0.5nm laterally and estimated at between 100 ft and 200 ft vertically.)
  • A320 / AT76, Yangon Myanmar, 2017 (Synopsis: On 18 September 2017, a departing Airbus A320 was instructed to line up and wait at Yangon but not given takeoff clearance until an ATR72 was less than a minute from touchdown and the prevailing runway traffic separation standard was consequently breached. The Investigation found that the TWR controller had been a temporarily unsupervised trainee who, despite good daylight visibility, had instructed the A320 to line up and wait and then forgotten about it. When the A320 crew, aware of the approaching ATR72, reminded her, she “did not know what to do” and the trainee APP controller had to intervene.)
  • F900 / B772, en-route, near Kihnu Island Estonia, 2013 (Synopsis: On 17 October 2013, a Falcon 900 climbing as cleared to FL 340 and being operated as a State Aircraft equipped with TCAS II v7.0 initially responded to a TCAS RA against crossing traffic at FL 350 in day VMC in the opposite direction to the one directed and prescribed separation was lost as a result. The Investigation concluded that the F900 crew had commenced a climb on receipt of a TCAS RA 'ADJUST VERTICAL SPEED' when a reduction in the 800 fpm rate of climb was required. Safety Recommendations were made in respect of TCAS RA requirements for State Aircraft.)
  • DH8D / B772, vicinity Sydney Australia, 2016 (Synopsis: On 9 December 2016, a Bombardier DHC8-400 departing Sydney lost prescribed separation against an inbound Boeing 777-200 after its crew failed to ensure that the aircraft levelled as cleared at 5,000 feet and this was exceeded by 600 feet. The Investigation found that the First Officer, as Pilot Flying, had disconnected the autopilot prior to routinely changing the selected airspeed because it tended to disconnect when this was done with altitude capture mode active but had then failed to re-engage it. The Captain's lack of effective monitoring was attributed to distraction as he sought to visually acquire the conflicting traffic.)
  • F15 / B752, en-route, South East of Birmingham UK, 2000 (Synopsis: On 22 November 2000, near Birmingham UK, a dangerous loss of vertical and lateral separation occurred between a Boeing B757-200 being operated by Britannia Airways on a passenger flight and a formation flight of two F-15Es being operated by the United States Air Force (USAF).)