UK Airprox Board UK Airprox Board
  • Assessment Summary Sheet for UKAB Meeting on 21st March 2018

     

    Total Risk A Risk B Risk C Risk D Risk E
    15 1 2 7 2 3

     

    Airprox

    Aircraft 1

    (Type)

    Aircraft 2

    (Type)

    Airspace

    (Class)

    Cause ICAO Risk
    2017259

    S92

    (SAR)

    Typhoon

    (HQ Air Ops)

    London FIR

    (G)

    A sighting report. E
    2017262

    DJI Phantom

    (Civ Pte)

    Tornado

    (HQ Air Ops)

    London FIR

    (G)

    A sighting report. E
    2017263

    BE350

    (HQ Air Ops)

    F15

    (Foreign Mil)

    London FIR

    (G)

    The F15 pilots inadvertently flew into conflict with the BE350 having not fully assimilated earlier Traffic Information.

    Contributory: 1. The F15s and the BE350 were on different frequencies.

    2. The BE350 pilot was asked to change frequency just before CPA and before Traffic Information was updated.

    3. Tactical controller workload was high.

    4. Traffic Information to the F15s was not explicit regarding the BE350 orbit.

    5. The F15s were given erroneous Traffic Information in azimuth just prior to CPA.

    C
    2017265

    EuroFOX/ Glider

    (Civ Club)

    Typhoon

    (HQ Air Ops)

    London FIR

    (G)

    A late sighting by the Typhoon pilot as he overtook the EuroFOX and glider.

    Contributory: 1. The Linton controller vectored the Typhoon overhead Rufforth at 2100ft.

    2. The EuroFOX was not transponder equipped.

    Recommendation: The BGA consider recommending the fitment of transponders to tug aircraft.

    C
    2017266

    AW139

    (SAR)

    CAP10

    (Civ Pte)

    London FIR

    (G)

    A conflict in Class G.

    Contributory: The low sun hindered the AW139 pilot’s lookout.

    C
    2017268

    DJI Spark

    (Civ Pte)

    Light Aircraft

    (Unknown)

    London FIR

    (G)

    The drone operator was concerned by the proximity of the light aircraft.   D
    2017269

    PA28

    (Civ Trg)

    SR22

    (Civ Pte)

    London FIR

    (G)

    The SR22 pilot flew into conflict with the PA28.

    Contributory: Inaction by the SR22 pilot on sighting the PA28 ahead.

    B
    2017272

    AW189

    (Civ Comm)

    F15

    (Foreign Mil)

    London FIR

    (G)

    The AW189 pilot was concerned by the proximity of the F15.

    Recommendation: USAFE-UK consider promulgation of North Sea helicopter activity to F15 crews.

    E
    2017274

    EC135

    (Civ Comm)

    R44

    (Civ Comm)

    London FIR

    (G)

    The R44 pilot flew close enough to cause the EC135 pilot concern. C
    2017275

    Discus

    (Civ Pte)

    P68

    (Civ Comm)

    Scottish FIR

    (G)

    A late sighting by the Discus pilot and a non-sighting by the P68 pilot. C
    2017276

    DH82 x 2

    (Civ Club)

    Light Aircraft

    (Unknown)

    London FIR

    (G)

    The light aircraft flew close enough to cause concern. D
    2017277

    EC135

    (Civ Comm)

    R44

    (Civ Pte)

    London FIR

    (G)

    Effectively a non-sighting by both pilots.

    Contributory: The Benson controller did not pass timely Traffic Information.

    B
    2017278

    Tucano

    (HQ Air Trg)

    F15

    (Foreign Mil)

    London FIR

    (G)

    A conflict in Class G.

    Contributory: The F15s exceeded 10000fpm rate of climb once above safety altitude, thereby denying the Tucano TCAS barrier.

    Recommendation: USAFE-UK review the rate of climb once above safety altitude after a low-level abort.

    A
    2017282

    RC135

    (Foreign Mil)

    2 F15s

    (Foreign Mil)

    London FIR

    (G)

    The F15s flew into conflict with the RC135, despite having received Traffic Information. C
    2018008

    A320

    (CAT)

    EC135

    (NPAS)

    London CTR

    (D)

    The A320 pilot was concerned by the proximity of the EC135 which the Heathrow controller had cleared to cross in front of him.

    Contributory: Late and incomplete Traffic Information to the A320 pilot.

    C

     

  • Consolidated Drone/Balloon/Model/Unknown Object Report Sheet for UKAB Meeting on 21st March 2018

      Download below sheet as PDF

    Total Risk A Risk B Risk C Risk D Risk E
    4 1 1 2 0 0

     

    Airprox

    Number

    Date

    Time (UTC)

    Aircraft

    (Operator)

    Object

    Location

    Description

    Altitude

    Airspace

    (Class)

    Pilot/Controller Report

    Reported Separation

    Reported Risk

    Cause/Risk Statement

    ICAO

    Risk

    2017283    

    20 Dec 17

    1549        

    B787

    (CAT)

    Drone

    5129N 00007W

    12nm west Heathrow

    4000ft            

    London TMA

    (D)

    The B787 pilot reports that he was in level flight, stabilised on approach to RW27R at Heathrow, when the crew saw what appeared to be opposite direction oncoming ‘rotor-wing’ traffic which passed very closely above and slightly to the right. The extremely fast crossing speed precluded any chance of positive identification or initiation of evasive action. The crew noted that the object looked like a miniature remote controlled helicopter, about the size of a volley ball, rather than a typical flat or star shaped multi-rotor drone. ATC was asked whether there was any proximate helicopter traffic. However, ATC reply discounted the possibility of any conflicting traffic. Normal approach and landing followed and after passenger disembarkation two Police Officers boarded the aircraft to take a provisional statement from the crew.

     

    Reported Separation: 100ft V/50ft H

    Reported Risk of Collision: Medium

    Cause: The drone was being flown beyond practical VLOS limits such that it was endangering other aircraft at that altitude and position. The Board agreed that the incident was therefore best described as the drone was flown into conflict with the B787.

     

    Risk: The Board considered that the pilot’s overall account of the incident portrayed a situation where providence had played a major part in the incident and/or a definite risk of collision had existed.

    A
    2018028

    22 Feb 18

    1030          

    EC135

    (Civ Comm)         

    Drone

    5156N 00052W

    Winslow, SW Milton Keynes

    1500ft

    London FIR

    (G)

    The EC135 pilot reports that he was on a VFR transit at 1500ft and receiving a Basic Service from Brize ATC when he passed an object, believed to be a quadcopter style drone.  The encounter happened very quickly, but the drone appeared too small to be a full sized aircraft, yet quite large for a drone.  It did not appear to be climbing and so was not a helium balloon.  He reported the incident to Brize ATC, who subsequently informed him that they observed a small primary contact on the radar.

     

    Reported Separation: 100ft V/150m H

    The NATS area radars did not have any primary returns in the vicinity that could have been the drone.

    Cause: Although on the edge of the practical limits of VLOS, nevertheless, the drone was entitled to operate at that location and altitude, was not being flown in proximity to airfield approach paths etc and so was not endangering other aircraft. The Board agreed that the incident was therefore best described as a conflict in Class G.

     

    Risk: The Board considered that the pilot’s overall account of the incident portrayed a situation where although safety had been reduced, there had been no risk of collision.

    C
    2018030 21 Feb 18

    E190

    (CAT)

    Drone

    5129N 00007W

    ODLEG

    2000ft

    London/City CTR

    (D)                    

    The Embraer 190 pilot reports that a large black multi-rotor drone passed down the left side as they were approaching ODLEG. No avoiding action was necessary. The drone appeared to be stationary at first, before then tilting and flying south in the opposite direction. The incident was reported to ATC and the Police met them on a later flight to take the details.

     

    Reported Separation: 0ft V/100m H

    Reported Risk of Collision: Medium

    Cause: The drone was being flown beyond practical VLOS limits such that it was endangering other aircraft at that altitude and position. The Board agreed that the incident was therefore best described as the drone was flown into conflict with the E190.

     

    Risk: The Board considered that the pilot’s overall account of the incident portrayed a situation where safety had been much reduced below the norm to the extent that safety had not been assured.

    B
    2018032 14 Feb 18

    F15

    (Foreign Mil)                

    Drone 

    5228N 00042E

    7nm NE RAF Lakenheath

    1900ft

    London FIR

    (G)

    The F15 pilot reports that he was on the ILS approach when both crew saw something go down the right side of the aircraft. They both thought that it was not a bird but that it could be a ‘gyrocopter’ or some type of UAS. The pilot advised the crew in an aircraft that was behind them on the approach who did not see anything.

     

    Reported Separation: 100ft V/100m H

    Reported Risk of Collision: Medium

    Cause: The drone was being flown beyond practical VLOS limits such that it was endangering other aircraft at that altitude and position. The Board agreed that the incident was therefore best described as the drone was flown into conflict with the F15.

     

    Risk: The Board considered that the pilot’s overall account of the incident portrayed a situation where although safety had been reduced, there had been no risk of collision.

    C