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  • F50 / T6, vicinity Maastricht Netherlands, 2007 (Synopsis: On 2 August 2007, a Fokker F50 on an ILS approach to Maastricht in IMC came into close proximity inside the CTZ with an unseen light aircraft which had failed to comply with its Special VFR transit clearance. The Investigation found that the transiting aircraft had come within 0.14nm / 260 metres of the opposite direction F50 at a similar altitude without either aircraft having sight of the other, and that the Harvard had been wrongly assumed by ATC to be a helicopter after an initial lack of call sign prefix clarity on first contact had not been positively resolved.)
  • G115 / G115, near Porthcawl South Wales UK, 2009 (Synopsis: On 11 February 2009, the plots of two civil-registered Grob 115E Tutors being operated for the UK Royal Air Force (RAF) and both operating from RAF St Athan near Cardiff were conducting Air Experience Flights (AEF) for air cadet passengers whilst in the same uncontrolled airspace in day VMC and aware of the general presence of each other when they collided. The aircraft were destroyed and all occupants killed)
  • G115 / GLID, en-route Oxfordshire UK, 2009 (Synopsis: On 14 June 2009, a Grob 115E Tutor being operated by the UK Royal Air Force (RAF) and based at RAF Benson was conducting aerobatics in uncontrolled airspace near Drayton, Oxfordshire in day VMC when it collided with a Standard Cirrus Glider on a cross country detail from Lasham. The glider was sufficiently damaged that it could no longer be controlled and the glider pilot parachuted to safety. The Tutor entered a spin or spiral manoeuvre which it exited in a steep dive from which it did not recover prior to a ground impact which killed both occupants.)
  • H25B / AS29, en-route / manoeuvring, near Smith NV USA, 2006 (Synopsis: On 28 August 2006, a Hawker 800 collided with a glider at 16,000 feet in Class 'E' airspace. The glider became uncontrollable and its pilot evacuated by parachute. The Hawker was structurally damaged and one engine stopped but it was recovered to a nearby airport. The Investigation noted that the collision had occurred in an area well known for glider activity in which transport aircraft frequently avoided glider collisions using ATC traffic information or by following TCAS RAs. The glider was being flown by a visitor to the area with its transponder intentionally switched off to conserve battery power.)
  • RJ1H/UNKN, vicinity Malmo Sweden, 2009 (Synopsis: On 13 October 2009, an Avro RJ100 being operated by Malmo Aviation on a scheduled passenger flight from Stockholm Bromma to Malmo in day VMC came into proximity with a unseen light aircraft crossing below which activated a TCAS RA which was followed. The flight crew were unaware that they were outside controlled airspace at the time. No abrupt manoeuvring occurred and none of the 85 occupants were injured.)
  • ULAC / A319 vicinity Southend UK, 2013 (Synopsis: On 18 July 2013, an Airbus A319 level at 2000 feet QNH in Class G airspace and being radar vectored towards an ILS approach at Southend in day VMC had a sudden but brief base leg encounter with a paramotor which was not visible on radar and was seen too late for avoiding action to be practicable, before passing within an estimated 50 metres of the A319. The paramotor pilot could not subsequently be traced. The Investigation made a safety recommendation to the UK CAA to "review the regulation and licensing of paramotor pilots".)