UK Airprox Board UK Airprox Board
  • Assessment Summary Sheet for UKAB Meeting on Wednesday 20th May 2020

    Contributory factor assessment for each Airprox can be downloaded here

     

    Total A B C D E
    10 0 2 6 1 1

     

    Airprox Aircraft 1 (Type) Aircraft 2 (Type) Airspace (Class)

    ICAO

    Risk

    2019326 Emeraude (Civ FW) C172 (Civ FW) London FIR (G) C
    2019328 Chinook (HQ JHC) Cirrus SR20 (Civ FW) London FIR (G) C
    2019329 Typhoon(A) (HQ Air (Ops)) Typhoon(B) (HQ Air (Ops)) AARA 4 (C) C
    2019330 DA40(A) (Civ FW) DA40(B) (Civ FW) Bournemouth CTR (D) C
    2019333 Voyager (HQ Air (Ops)) Typhoon (HQ Air (Ops)) EG D323A (Danger Area) E
    2019335 TB20 (Civ FW) C152 (Civ FW) London FIR (G) B
    2020001 TB20 (Civ FW) Light Aircraft (Unknown) London FIR (G) B
    2020002 DA42 (Civ FW) PA28 (Civ FW) Oxford ATZ (G) C
    2020003 Chipmunk (Civ FW) Helicopter (Unknown) London FIR (G) D
    2020006 Cessna 421 (Civ Comm) PA28 (Civ FW) London FIR (G) C

  • Consolidated Drone/Balloon/Model/Unknown Object Report Sheet for UKAB Meeting on 20th May 2020

    Contributory factor assessment for each Airprox can be downloaded here

     

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

     

    Airprox

    Number                           

    Date

    Time (UTC)                                                                                                                    

    Aircraft

    (Operator)                        

    Object                              

    Location[1]

    Description

    Altitude                        

    Airspace

    (Class)                                 

    Pilot/Controller Report

    Reported Separation

    Reported Risk

    Comments/Risk Statement

    ICAO

    Risk

    2020033

    21 Mar 20      

    1424

    B747

    (CAT)

    Unk Obj

    N5120 W00038

    LHR 220°/10NM

    6000ft

     

    London TMA

    (A)

    The B747 pilot reports flying right downwind for RW09L at 6000ft. He had been cleared to descend to 4000ft when a drone passed down the port side within 300ft laterally 200ft below.

     

    Reported Separation: 200ft V/300ft H

    Reported Severity of Risk: Medium

     

    The LHR FIN controller reports that they acknowledged the pilot’s report, took the details and informed all relevant sectors and subsequent aircraft. No further sightings were reported.

    In the Board’s opinion the reported altitude and/or description of the object were such that they were unable to determine the nature of the unknown object.

     

    Applicable Contributory Factors: 4, 5, 7

     

    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
    2020034

    13 Mar 20

    1040

    A320

    (CAT)

    Unk Obj

    N5329 W00057

    5NM SE Doncaster

    FL140

    Airway Y70

    (A)

    The A320 pilot reports that, during descent, a drone passed down the starboard side of the aircraft. The drone looked orange/brown in colour and was fairly large. He reported the incident to the Scottish Radar controller.

     

    Reported Separation: 25ft V/1.0NM H

    Reported Risk of Collision: Medium

    In the Board’s opinion the reported altitude and/or description of the object were such that they were unable to determine the nature of the unknown object.

     

    Applicable Contributory Factors: 4, 5, 8

     

    Risk: The Board considered that the pilot’s overall account of the incident portrayed a situation where normal procedures and/or safety standards had applied.

    E



    [1] Latitude and Longitude are usually only estimates that are based on the reported time of occurrence mapped against any available radar data for the aircraft’s position at that time. Because such reported times may be inaccurate, the associated latitudes and longitudes should therefore not be relied upon as precise locations of the event.