Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

4005BF

ICAO 24-bit transponder address · allocated to United Kingdom

Currently assigned to G-VIIG · BOEING 777-200

Hex
4005BF
Octal
20002677
Decimal
4,195,775
Country
GB
Tail
G-VIIG
Type
B772
No current signal · last broadcast 3h ago
Flights observed
106
Distinct callsigns
20
Country
GB
Last broadcast
3h ago

Last known position

Most recent position reported by Mode-S 4005BF.

Country allocation

The ICAO 24-bit address 4005BF falls within the block assigned to United Kingdom (GB) by ICAO Annex 10, Volume III. Every aircraft registered in United Kingdom receives a permanent address from this block at the time of registration; the address stays with the airframe even if the aircraft is re-registered to a different operator within the country.

Callsign history 20 distinct

Callsign Airline Flights Last seen
BAW11J British Airways 8 2026-05-08
BAW181 British Airways 7 2026-05-07
BAW176A British Airways 7 2026-05-28
BAW7TG British Airways 6 2026-05-23
BAW23T British Airways 6 2026-05-24
BAW7NY British Airways 5 2026-05-08
BAW19N British Airways 5 2026-05-24
BAW17R British Airways 5 2026-05-27
BAW172 British Airways 5 2026-05-09
BAW7W British Airways 4 2026-05-28
BAW2LJ British Airways 4 2026-05-04
BAW29G British Airways 4 2026-04-14
BAW22B British Airways 4 2026-05-03
BAW216 British Airways 4 2026-05-28
BAW18B British Airways 4 2026-05-25
BAW04A British Airways 4 2026-04-16
BAW9E British Airways 3 2026-05-26
BAW82 British Airways 3 2026-04-13
BAW185 British Airways 3 2026-05-26
BAW180 British Airways 3 2026-04-17

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-29 BAW239 LHR → BOS May 29, 19:50 UTCMay 30, 02:20 UTC6h 30m
2026-05-28 BAW216 IAD → LHR May 28, 22:40 UTCMay 29, 05:20 UTC6h 40m
2026-05-28 BAW7W LHR → IAD May 28, 13:25 UTCMay 28, 20:25 UTC7h 0m
2026-05-28 BAW176A JFK → LHR May 28, 00:15 UTCMay 28, 06:40 UTC6h 25m
2026-05-27 BAW17R LHR → JFK May 27, 07:45 UTCMay 27, 14:35 UTC6h 50m
2026-05-26 BAW9E EWR → LHR May 26, 22:05 UTCMay 27, 04:24 UTC6h 20m
2026-05-26 BAW185 LHR → EWR May 26, 10:39 UTCMay 26, 17:35 UTC6h 55m
2026-05-25 BAW40F JFK → LHR May 25, 22:55 UTCMay 26, 05:20 UTC6h 25m
2026-05-25 BAW173A LHR → JFK May 25, 11:10 UTCMay 25, 18:25 UTC7h 15m
2026-05-25 BAW18B BDA → LHR May 25, 04:15 UTCMay 25, 05:25 UTC1h 10m
2026-05-24 BAW18B BDA → LHR May 24, 23:00 UTCMay 24, 23:20 UTC20m
2026-05-24 BAW19N LHR → BDA May 24, 20:35 UTCMay 24, 20:45 UTC10m
2026-05-24 BAW19N LHR → BDA May 24, 13:45 UTCMay 24, 14:40 UTC55m
2026-05-24 BAW23T ATL → LHR May 24, 03:05 UTCMay 24, 10:30 UTC7h 25m
2026-05-23 BAW7TG LHR → ATL May 23, 15:45 UTCMay 24, 00:15 UTC8h 30m
2026-05-22 BAW18B BDA → LHR May 22, 23:10 UTCMay 23, 05:30 UTC6h 19m
2026-05-22 BAW19N LHR → BDA May 22, 20:45 UTCMay 22, 21:05 UTC20m
2026-05-22 BAW19N LHR → BDA May 22, 13:55 UTCMay 22, 15:05 UTC1h 10m
2026-05-22 BAW252N NAS → LHR May 22, 09:10 UTCMay 22, 10:30 UTC1h 20m
2026-05-21 BAW53M LHR → NAS May 21, 09:55 UTCMay 21, 16:55 UTC7h 0m
2026-05-15 BAW18B BDA → LHR May 15, 05:15 UTCMay 15, 06:40 UTC1h 25m
2026-05-14 BAW19N LHR → BDA May 14, 15:10 UTCMay 14, 16:10 UTC1h 0m
2026-05-14 BAW23T ATL → LHR May 14, 03:55 UTCMay 14, 11:15 UTC7h 20m
2026-05-13 BAW7TG LHR → ATL May 13, 16:55 UTCMay 14, 01:25 UTC8h 30m
2026-05-13 BAW23T ATL → LHR May 13, 02:45 UTCMay 13, 10:45 UTC8h 0m
2026-05-12 BAW7TG LHR → ATL May 12, 15:30 UTCMay 13, 00:05 UTC8h 35m
2026-05-12 BAW23T ATL → LHR May 12, 04:10 UTCMay 12, 11:30 UTC7h 20m
2026-05-11 BAW7TG LHR → ATL May 11, 17:10 UTCMay 11, 18:00 UTC50m
2026-05-11 BAW23T ATL → LHR May 11, 02:55 UTCMay 11, 10:30 UTC7h 35m
2026-05-10 BAW7TG LHR → ATL May 10, 15:45 UTCMay 11, 00:19 UTC8h 35m
2026-05-10 BAW23T ATL → LHR May 10, 02:45 UTCMay 10, 10:19 UTC7h 35m
2026-05-09 BAW7TG LHR → ATL May 9, 15:50 UTCMay 10, 00:20 UTC8h 30m
2026-05-09 BAW172 JFK → LHR May 9, 01:20 UTCMay 9, 07:55 UTC6h 35m
2026-05-08 BAW7NY LHR → JFK May 8, 09:34 UTCMay 8, 16:40 UTC7h 5m
2026-05-08 BAW11J JFK → LHR May 8, 00:29 UTCMay 8, 05:29 UTC5h 0m
2026-05-07 BAW11J JFK → LHR May 7, 23:14 UTCMay 8, 00:25 UTC1h 10m
2026-05-07 BAW181 LHR → EWR May 7, 12:00 UTCMay 7, 19:20 UTC7h 20m
2026-05-07 BAW176A JFK → LHR May 7, 00:40 UTCMay 7, 07:00 UTC6h 20m
2026-05-06 BAW17R LHR → JFK May 6, 07:55 UTCMay 6, 15:00 UTC7h 5m
2026-05-05 BAW9E EWR → LHR May 5, 22:20 UTCMay 6, 04:40 UTC6h 20m
2026-05-05 BAW185 LHR → EWR May 5, 10:30 UTCMay 5, 17:40 UTC7h 10m
2026-05-04 BAW11J JFK → LHR May 4, 23:10 UTCMay 5, 05:40 UTC6h 30m
2026-05-04 BAW181 LHR → EWR May 4, 12:15 UTCMay 4, 19:05 UTC6h 51m
2026-05-04 BAW2LJ BWI → LHR May 4, 01:44 UTCMay 4, 08:40 UTC6h 55m
2026-05-03 BAW22B LHR → BWI May 3, 15:55 UTCMay 3, 23:20 UTC7h 25m
2026-05-03 BAW290 LHR → IAD May 3, 00:40 UTCMay 3, 07:25 UTC6h 44m
2026-05-02 BAW291 LHR → SFO May 2, 15:10 UTCMay 2, 22:40 UTC7h 30m
2026-05-01 BAW11J JFK → LHR May 1, 23:05 UTCMay 2, 05:40 UTC6h 36m
2026-05-01 BAW181 LHR → EWR May 1, 12:10 UTCMay 1, 19:00 UTC6h 50m
2026-05-01 BAW172 JFK → LHR May 1, 01:35 UTCMay 1, 08:20 UTC6h 45m

About Mode-S

A Mode-S transponder code (also called an "ICAO 24-bit address" or "hex code") is a 6-character hexadecimal identifier permanently assigned to an aircraft when it's first registered. Unlike callsigns (which change with each flight) or registrations (which can change if an aircraft is sold internationally), the Mode-S address stays with the airframe for the life of the aircraft in that country.

Every ADS-B transmission from an aircraft includes its Mode-S address, making it the most reliable way to identify a specific airframe. Flight-tracking services like Apparatus use the Mode-S address as the primary key for tying position broadcasts, callsigns, and ownership records together.

Prefer a tail-number view? See the G-VIIG page for operator, model, and routing details .

Mode-S 4005BF frequently asked

What is Mode-S code 4005BF?
4005BF is an ICAO 24-bit transponder address. Allocated to United Kingdom. Assigned to G-VIIG.
Where is Mode-S 4005BF registered?
Mode-S code 4005BF is allocated to United Kingdom (GB). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4005BF broadcasting right now?
No active broadcast right now. Last signal was 3h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4005BF, octal 20002677, decimal 4,195,775.
What flights does 4005BF operate?
Mode-S 4005BF has broadcast 20 distinct callsigns, including BAW11J, BAW181, BAW176A, BAW7TG, BAW23T.