UK Airprox Board UK Airprox Board
  • Assessment Summary Sheet for UKAB Meeting on Wednesday 11th September 2019

    Contributory factor assessment for each Airprox can be downloaded here


    Total A B C D E
    20 1 6 13 0 0

     

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

    ICAO

    Risk

    2019081 Dimona H36 (Civ Gld) C172 (Civ FW) London FIR (G) B
    2019100 HPH Shark (Civ Gld) Glider (Civ Gld) London FIR (G) A
    2019101 ASK21 (Civ Gld) PA28 (Civ FW) Scottish FIR (G) C
    Recommendation: SkyDemon review the selection and depiction of sites used for aerial sporting and recreational activities.
    2019102 Auster (Civ FW) C172 (Civ FW) Scottish FIR (G) B
    2019104 PA34 (Civ FW) PA28 (Civ FW) London FIR (G) C
    2019105 Standard Cirrus (Civ Gld) PA28 (Civ FW) London FIR (G) C
    2019106 DA40 (Civ FW) PA28 (Civ FW) Shoreham ATZ (G) C
    2019107 AS355 (Civ Helo) Folland Gnat (Civ FW) London FIR (G) C
    2019108 DH82 Queen Bee (Civ FW) AS355 (Civ Comm) London FIR (G) C
    2019109 Chipmunk (Civ FW) Sling 2 (Civ FW) London FIR (G) B
    2019110 Puchaz glider (Civ Gld)

    P51 Mustang/Sea Fury

    (Civ FW)

    London FIR (G) C
    Recommendation: SkyDemon review the selection and depiction of sites used for aerial sporting and recreational activities.
    2019111 FA20 (Civ Comm) Glider (Civ Gld) London FIR (G) C
    2019112 Saab 340 (CAT) A321 (CAT) London TMA (A) C
    2019116 Beech 58 (Civ FW) Ventus glider (Civ Gld) London FIR (G) B
    2019117 Eurofox 912 (Civ FW) AS365 (Civ Helo) Scottish FIR (G) C
    2019118 PA28 (Civ FW) PA31 (Civ FW) Biggin Hill ATZ (G) C
    2019119 G450 (Civ Comm) SR22 (Civ FW) Liverpool CTR (D) C
    2019121 PA34 (Civ FW) PA28 (Civ FW) Bournemouth CTR (D) B
    2019122 Duo Discus (Civ Gld) TB20 (Civ FW) London FIR (G) B
    2019125 ASK21 (Civ Gld) DC3 (Civ FW) London FIR (G) C

  • Consolidated Drone/Balloon/Model/Unknown Object Report Sheet for UKAB Meeting on 11 September 2019

    Contributory factor assessment for each Airprox can be downloaded here


    Total Risk A Risk B Risk C Risk D Risk E
    15 6 3 6 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

    2019148

    17 Jun 19     

    0920 

    B787

    (CAT)

    Drone

    5128N 00014W

    8NM E London Heathrow

    2600ft

    London TMA

    (A)

    The B787 pilot reports seeing a large white ‘box-like’ drone of ‘cuboid construction’ whilst on final approach to RW27L. It appeared to have an upper and lower surface propeller but this may have been an illusion. The drone was approximately 8nm from the airfield almost exactly between the 2 runways at around 2000ft agl.

     

    Reported Separation: 200ft V/NK H

    Reported Risk of Collision: Medium

    The reported drone was being flown above the maximum permitted height of 400ft and within controlled airspace such that it was endangering other aircraft at that location.   Applicable Contributory Factors: 1, 2, 3, 4, 6   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
    2019149

    16 Jun 19

    1125

    A319

    (CAT)

    Drone

    5118N 00006E

    BIG Hold

    FL100

    London TMA

    (A)

    The A319 pilot reports that while holding at FL100 in the BIG hold, the aircraft immediately below reported a sighting of a drone at his (the A319’s) level within the holding pattern.  The drone was clearly visible abeam his starboard wing at a range of about 50ft.  It was noted that the ‘quad’ designed drone was able to hold an altitude of approximately 10,000ft even in a 50kt wind. Rather than continue in the hold and turning towards the drone, he exited the hold.

     

    Reported Separation: 0ft V/18m H

    Reported Risk of Collision: Low

     

    The Swanwick controller reports that an aircraft in the BIG hold reported a drone passing over him, about 300ft above.  Approximately 2mins later the A319 pilot reported that a drone had just passed over his right wing, about 50ft above and requested vectors away from the hold.

    The reported drone was being flown above the maximum permitted height of 400ft and within controlled airspace such that it was endangering other aircraft at that location.

     

    Applicable Contributory Factors: 1, 2, 3, 4, 6

     

    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
    2019153
    16 Jun 19
    1445

    B737

    (CAT)
    Drone
    5356N 00146W

    6nm RW14 Leeds Bradford

    2900ft

    Leeds Bradford CTR
    (D)

    The B737 pilot reports that he was 6nm on the ILS RW14 passing 2900ft when the crew noticed a drone flying past the aircraft on the Captain’s side, it missed the left wing-tip by a matter of metres. The drone was orange and black.

     

    Reported Separation: 0ft V/’few’ m H

    Reported Risk of Collision: High
    The reported drone was being flown above the maximum permitted height of 400ft and within controlled airspace such that it was endangering other aircraft at that location.
     

    Applicable Contributory Factors: 1, 2, 3, 4, 6

    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
    2019155

    22 Jun 19

    1923

    A320

    (CAT)

    Drone

    5144N 00005W

    BPK waypoint

    6000ft

    London TMA

    (A)

    The A320 pilot reports that when abeam the BPK waypoint, initiating a climb from 6000ft, he saw a drone on his right-hand side, just below.  The drone was round and black with red and green lights and was about 50cm in diameter.

     

    Reported Separation: 300ft V/ 100m H

    Reported Risk of Collision: Low

     

    The Swanwick Controller reports that at about 1924, the A320 climbing on departure reported a drone in the BPK area at about 6000ft.

    The reported drone was being flown above the maximum permitted height of 400ft and within controlled airspace such that it was endangering other aircraft at that location.

     

    Applicable Contributory Factors: 1, 2, 3, 4, 6

     

    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
    2019166

    17 Jun 19

    1308

    C180

    (Civ FW)

    Drone

    5146N 00001W

    Hoddesdon

    2100ft

    Stansted CTA

    (D) (TMZ)

    The C180 pilot reports in level cruise in receipt of a radar control service from Essex Radar when he saw an object in his peripheral vision in the right 2 o’clock position at a range of about 100m. He initially thought it was a bird but the passenger also saw it and confirmed that it was a dark coloured drone at exactly the same level. The pilot noted that this was a very high risk encounter because a slight difference in track laterally could have resulted in a collision.

     

    Reported Separation: 0ft V/100m H

    Reported Risk of Collision: Very High

    The reported drone was being flown above the maximum permitted height of 400ft and within controlled airspace such that it was endangering other aircraft at that location.

     

    Applicable Contributory Factors: 1, 2, 3, 4, 6

     

    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
    2019167

    23 Jun 19

    1205

    A319

    (CAT)

    Balloon

    5128N 00047W

    Heathrow Approach

    3400ft

    London TMA

    (A)

    The A319 pilot reports that he was on a standard arrival to Heathrow RW09. The First Officer and Captain saw what looked like a large rectangular box suspended by 3 balloons, orange and white in colour.  The preceding aircraft had reported seeing the object but described it as a drone, however the A319 crew were not sure it was a drone. Approach mode was disengaged and an avoiding left bank was made using autopilot.  The approach was regained after the event.

     

    Reported Separation: 10ft V/ 20m H

    Reported Risk of Collision: High

     

    The Swanwick Controller reports that a DH8 reported seeing a drone at 3000ft at 12nm final, however the subsequent A319 pilot reported it as 3 large balloons carrying a box.

    The Board were unable to determine the nature of the balloon.

     

    Applicable Contributory Factors: 5

     

    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
    2019168

    27 Jun 19

    1831

    A319

    (CAT)

    Balloon

    5602N 00327W

    Rosyth

    8300ft

    Scottish TMA

    (D) (TMZ)

    The A319 pilot reports on departure, in the climb approaching GOW30, when an unknown object, apparently metallic and suspected to be a drone or balloon, came within 20-50ft of aircraft and passed down the left hand side. There were no signs of collision and engine parameters were normal. Object reported to ATC and subsequent aircraft kept clear.

     

    The Prestwick controller reports: At about FL100 the aircraft reported that they had flown in close proximity to an unknown object. The subsequent aircraft already working him was vectored off the SID to the north. Further questioning revealed that [A319 C/S] had flown in close proximity to what they thought was a silver balloon, that they hadn't come into contact with the object and they were happy to continue.

     

    NATS Investigation: [A319 C/S] was following the track of the GOSAM 1D SID when they reported that they ‘had just had an a AIRPROX with an unknown object approximately two miles ago’, to the Galloway sector at Prestwick Centre. The controller missed this message and asked for a repeat. [A319 C/S] responded that they ‘just had an unknown object just pass off our left hand side. Very close proximity’, without mentioning that they considered this an AIRPROX. When asked if they thought the object were a drone or a balloon, the crew responded ‘We’re not sure. We think it may have been a balloon. It looked a little bit metallic but might have been one of those silver reflective ones’. A following aircraft was advised of the sighting and vectored off the SID. The location corresponded to Rosyth dockyard, on the north bank of the Forth Estuary. [A319 C/S] was passing FL83 at that point. Radar analysis of MRT and Kincardine radars showed no associated Primary returns +/- 30 minutes of the time of the event (18:30:37). There are no published radiosonde balloon launch sites in the area, and no NOTAMs could be found for balloon launches in the Scottish FIR on the date of the event.

     

    Reported Separation: ’20-50ft’

    Reported Risk of Collision: Medium

    The Board noted that that there were no Met balloons airborne in that area at that time and date. The Board were therefore not able to ascertain the origin of the balloon.

     

    Applicable Contributory Factors: 5

     

    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
    2019171

    27 Jun 19

    1752

    A319

    (CAT)

    Drone

    5131N 00019W

    Wembley

    3800ft

    London TMA

    (A)

    The A319 pilot reports that on passing 4000ft on departure from RW09R, a drone was spotted operating to the south of Wembley at around 3500-4000ft close to the departure track. No avoiding action was required as the drone passed below and to the left of the aircraft as it climbed.

     

    Reported Separation: 200-400m H

    Reported Risk of Collision: NK

    The reported drone was being flown above the maximum permitted height of 400ft and within controlled airspace such that it was endangering other aircraft at that location.

     

    Applicable Contributory Factors: 1, 2, 3, 4, 6

     

    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
    2019172

    23 Jun 19

    0716

    B747

    (CAT)

    Drone

    5108N 00046W

    7.5NM NW MID

    10400ft

    London TMA

    (A)

    The B747 pilot reports in the descent when he saw a large black circular object at a range of about 2nm. As it passed the aircraft it was identified as a drone with no lights or visible markings.

     

    Reported Separation: 0ft V/<0.5NM H

    Reported Risk of Collision: High

    The reported drone was being flown above the maximum permitted height of 400ft and within controlled airspace such that it was endangering other aircraft at that location.

     

    Applicable Contributory Factors: 1, 2, 3, 4, 6

     

    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
    2019173

    13 Jun 19

    1123

    B737

    (CAT)

    Drone

    5150N 00036E

    Stansted

    FL110

     

    London TMA

    (A)

    The B737 pilot reports he was departing Stansted on a radar heading of 070°.  On passing FL110 the FO spotted a drone pass close to the left-hand side of aircraft at the same height.  It was difficult to judge the distance, although it was close enough to see it was square with legs.  ATC were advised.

     

    Reported Separation: 0ft V/ Not known H

    Reported Risk of Collision: High

    The reported drone was being flown above the maximum permitted height of 400ft and within controlled airspace such that it was endangering other aircraft at that location.

     

    Applicable Contributory Factors: 1, 2, 3, 4, 6

     

    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
    2019174

    30 Jun 19

    1631

    CS100

    (CAT)

    Drone

    5131N 00001W

    3NM WNW LCY

    3000ft

    London TMA

    (A)

    The CS100 pilot reports departing from RW27 at LCY when they encountered a drone. The drone was at the right hand side and flying slightly higher. It was a small black drone but it was close enough for him to identify the 4 propellers. ATC were informed.

     

    Reported Separation: NK

    Reported Risk of Collision: NK

    The reported drone was being flown above the maximum permitted height of 400ft and within controlled airspace such that it was endangering other aircraft at that location.

     

    Applicable Contributory Factors: 1, 2, 3, 4, 6

     

    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
    2019185

    30 Jun 19

    1220

    B777

    (CAT)

    Drone

    5128N 00015W

    Barnes

    2400ft

    London CTR

    (D)

    The B777 pilot reports that at about 7NM on the ILS to RW27R, P3 spotted a large black drone slightly to the right at about ½nm. PM (the co-pilot) was immediately made aware and saw the drone in the right 1 o’clock position. ILS maintained as the drone appeared to be parallel to the aircraft’s track. P3 and PM monitored the drone as it passed down the right hand side. The drone appeared to be possibly in a hover due to the slow passing speed. The approach was continued, ATC were informed and a Police statement given on arrival at the gate. The Captain did not see the drone.

     

    Reported Separation: 0ft V/100-200m H

    Reported Risk of Collision: High

    The reported drone was being flown above the maximum permitted height of 400ft and within controlled airspace such that it was endangering other aircraft at that location.

     

    Applicable Contributory Factors: 1, 2, 3, 4, 6

     

    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
    2019186

    04 Jul 19

    1600

    Avro RJ

    (MoD ATEC)

    Drone

    5109N 00145W

    Boscombe Down

    400ft

    Boscombe ATZ

    (G)

    The Avro RJ pilot reports that he was established on a PAR to RW05.  At 1nm and 400ft agl, the PNF observed a small object just above the aircraft for only a split second.  The approach was continued to a touch and go for further PAR.  On climb-out he reported an Airprox with an unknown object, believed to be a drone, to ATC.  Shortly afterwards the App Controller reported that drone activity was spotted near a local golf club and hotel by the Runway Caravan Controller.

     

    Reported Separation: 50-100ft V

    Reported Risk of Collision: Medium

     

    The Boscombe Talkdown Controller reports that the talkdown was uneventful and he was not aware of the drone.

     

    The Boscombe Supervisor reports that after the RJ pilot reported the drone the Caravan Controller was asked to conduct a visual inspection of the approach lane.  He observed a drone overhead the golf course, which then descended and landed in a field obscured by trees.  Operations were informed, they spoke to the golf club, who were not aware of any activity.

    The reported drone was being flown within the lateral and vertical limits of an FRZ and within the ATZ such that it was endangering other aircraft at that location.

     

    Applicable Contributory Factors: 1, 3, 4, 6

     

    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
    2019189

    03 Jul 19

    1631

    B777

    (CAT)

    Drone

    5129N 00042W

    Fifield

    2500ft

    London CTR

    (D)

    The B777 pilot reports on final approach when he saw a flash of sunlight glint off something shiny directly ahead and just below the aircraft. His initial observation was it could be a shiny silver helium balloon. He called it out to the co-pilot and ‘Heavy’ co-pilot. It passed under the nose with no obvious velocity itself, but as they were passing it at 160Kts that was to be expected. It was seen to be a drone in the last second of view as the dazzle of sunshine off it faded. Had it been at our height there would have been insufficient time to manoeuvre to avoid.

     

    Reported Separation: 100ftV/0m H

    Reported Risk of Collision: High

    The reported drone was being flown above the maximum permitted height of 400ft and within controlled airspace such that it was endangering other aircraft at that location.

     

    Applicable Contributory Factors: 1, 2, 3, 4, 6

     

    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
    2019200

    18 Jul 19

    1852

    Saab 340

    (CAT)

    Balloon

    5344N 00206W

    Abeam POL

    FL140

    Manchester TMA

    (A)

    The Saab 340 pilot reports that he was abeam Pole Hill at FL140 routing north when he saw a dark round object coming towards them.  As it got closer they realised it was a weather balloon, it passed below and slightly right of the aircraft; the closing speed was quite high, and the object passed them before they could react. It was a semi-inflated grey or black balloon, with an elliptical appearance when viewed from the front and pear shaped when observed from above.  He estimated it was 1m wide and 3m long.

     

    Reported Separation: 50ft V/ 50m H

    Reported Risk of Collision: Medium

     

    A NATS investigation found that at 1852 the pilot reported seeing a black balloon to the controller.  He reported it as being ‘4 times the size of the football’ and it went in the opposite direction just below the right engine.  A review of the radar showed a few intermittent primary returns just before and just after the time of the event, but that the returns could not be conclusively identified as the balloon.

     

    The Met office reported that there were no Met office balloons in the air at that time, furthermore the position was some way from any of their release sites.

         

    The Board noted that the Met Office confirmed that there were no Met balloons airborne in that area at that time and date. The Board were therefore not able to ascertain the origin of the balloon.

     

    Applicable Contributory Factors: 5

     

    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