Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

4005BB

ICAO 24-bit transponder address · allocated to United Kingdom

Currently assigned to G-VIIC · BOEING 777-200

Hex
4005BB
Octal
20002673
Decimal
4,195,771
Country
GB
Tail
G-VIIC
Type
B772
No current signal · last broadcast 2h ago
Flights observed
89
Distinct callsigns
20
Country
GB
Last broadcast
2h ago

Last known position

Most recent position reported by Mode-S 4005BB.

Country allocation

The ICAO 24-bit address 4005BB 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
BAW25GP British Airways 11 2026-05-24
BAW255T British Airways 10 2026-05-03
BAW23T British Airways 9 2026-05-29
BAW7TG British Airways 7 2026-05-28
BAW19N British Airways 6 2026-05-29
BAW7W British Airways 5 2026-05-19
BAW252N British Airways 5 2026-05-27
BAW53M British Airways 4 2026-05-27
BAW18B British Airways 4 2026-05-29
BAW29G British Airways 3 2026-05-10
BAW9E British Airways 2 2026-05-13
BAW82 British Airways 2 2026-05-17
BAW216 British Airways 2 2026-05-19
BAW185 British Airways 2 2026-05-13
BAW183 British Airways 2 2026-05-16
BAW181 British Airways 2 2026-05-21
BAW178 British Airways 2 2026-05-17
BAW11J British Airways 2 2026-05-21
BAW51B British Airways 1 2026-05-19
BAW50G British Airways 1 2026-05-18

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-29 BAW18B BDA → LHR May 29, 23:10 UTCMay 29, 23:20 UTC10m
2026-05-29 BAW19N LHR → BDA May 29, 20:55 UTCMay 29, 21:05 UTC10m
2026-05-29 - - May 29, 19:55 UTCMay 29, 20:05 UTC10m
2026-05-29 BAW19N LHR → BDA May 29, 13:50 UTCMay 29, 15:10 UTC1h 20m
2026-05-29 BAW23T ATL → LHR May 29, 03:00 UTCMay 29, 10:55 UTC7h 55m
2026-05-28 BAW7TG LHR → ATL May 28, 16:10 UTCMay 29, 00:20 UTC8h 10m
2026-05-27 BAW252N NAS → LHR May 27, 16:25 UTCMay 28, 10:25 UTC18h 0m
2026-05-27 BAW252N NAS → LHR May 27, 10:50 UTCMay 28, 10:25 UTC23h 35m
2026-05-27 BAW53M LHR → NAS May 27, 10:00 UTCMay 27, 16:40 UTC6h 40m
2026-05-27 BAW18B BDA → LHR May 27, 04:19 UTCMay 27, 05:45 UTC1h 25m
2026-05-26 BAW18B BDA → LHR May 26, 23:10 UTCMay 26, 23:19 UTC10m
2026-05-26 BAW19N LHR → BDA May 26, 20:40 UTCMay 26, 20:54 UTC15m
2026-05-26 BAW19N LHR → BDA May 26, 14:05 UTCMay 26, 15:00 UTC55m
2026-05-24 BAW25GP BGI → LHR May 24, 10:50 UTCMay 25, 05:10 UTC18h 20m
2026-05-24 BAW25GP BGI → LHR May 24, 10:35 UTCMay 25, 05:10 UTC18h 35m
2026-05-23 BAW25GP BGI → LHR May 23, 10:50 UTCMay 24, 05:10 UTC18h 20m
2026-05-23 BAW25GP BGI → LHR May 23, 10:30 UTCMay 24, 05:10 UTC18h 40m
2026-05-22 BAW40F JFK → LHR May 22, 23:15 UTCMay 23, 05:20 UTC6h 4m
2026-05-22 BAW173A LHR → JFK May 22, 11:15 UTCMay 22, 18:05 UTC6h 50m
2026-05-21 BAW11J JFK → LHR May 21, 23:15 UTCMay 22, 05:20 UTC6h 5m
2026-05-21 BAW181 LHR → EWR May 21, 11:50 UTCMay 21, 18:50 UTC7h 0m
2026-05-21 BAW11J JFK → LHR May 21, 01:55 UTCMay 21, 08:15 UTC6h 20m
2026-05-20 BAW181 LHR → EWR May 20, 12:05 UTCMay 20, 19:05 UTC7h 0m
2026-05-19 BAW216 IAD → LHR May 19, 22:35 UTCMay 20, 05:25 UTC6h 51m
2026-05-19 BAW7W LHR → IAD May 19, 12:25 UTCMay 19, 19:45 UTC7h 20m
2026-05-19 BAW51B BOS → LHR May 19, 02:05 UTCMay 19, 08:15 UTC6h 10m
2026-05-18 BAW50G LHR → BOS May 18, 17:30 UTCMay 18, 23:50 UTC6h 19m
2026-05-17 BAW82 ABV → LHR May 17, 22:01 UTCMay 18, 13:25 UTC15h 25m
2026-05-17 BAW178 JFK → LHR May 17, 12:10 UTCMay 17, 18:20 UTC6h 10m
2026-05-16 BAW183 LHR → JFK May 16, 18:45 UTCMay 17, 02:05 UTC7h 20m
2026-05-15 BAW82 ABV → LHR May 15, 23:30 UTCMay 16, 13:21 UTC13h 51m
2026-05-13 BAW9E EWR → LHR May 13, 22:25 UTCMay 14, 04:45 UTC6h 20m
2026-05-13 BAW185 LHR → EWR May 13, 11:10 UTCMay 13, 18:30 UTC7h 20m
2026-05-12 BAW9E EWR → LHR May 12, 22:10 UTCMay 13, 04:30 UTC6h 20m
2026-05-12 BAW185 LHR → EWR May 12, 10:40 UTCMay 12, 18:20 UTC7h 40m
2026-05-12 BAW176A JFK → LHR May 12, 04:55 UTCMay 12, 06:20 UTC1h 25m
2026-05-11 BAW17R LHR → JFK May 11, 07:50 UTCMay 11, 14:55 UTC7h 5m
2026-05-10 BAW29G BOS → LHR May 10, 16:00 UTCMay 10, 17:55 UTC1h 55m
2026-05-10 BAW29G BOS → LHR May 10, 11:40 UTCMay 10, 12:49 UTC1h 10m
2026-05-09 BAW239 LHR → BOS May 9, 19:30 UTCMay 10, 01:55 UTC6h 25m
2026-05-09 BAW23T ATL → LHR May 9, 02:55 UTCMay 9, 10:35 UTC7h 40m
2026-05-08 BAW7TG LHR → ATL May 8, 15:50 UTCMay 9, 00:30 UTC8h 40m
2026-05-08 BAW23T ATL → LHR May 8, 09:04 UTCMay 8, 10:25 UTC1h 20m
2026-05-08 BAW23T ATL → LHR May 8, 03:09 UTCMay 8, 05:35 UTC2h 25m
2026-05-07 BAW7TG LHR → ATL May 7, 15:50 UTCMay 8, 00:40 UTC8h 50m
2026-05-07 BAW252N NAS → LHR May 7, 09:05 UTCMay 7, 10:30 UTC1h 25m
2026-05-06 BAW53M LHR → NAS May 6, 09:40 UTCMay 6, 10:55 UTC1h 15m
2026-05-05 BAW178 JFK → LHR May 5, 12:20 UTCMay 5, 18:45 UTC6h 25m
2026-05-04 BAW183 LHR → JFK May 4, 18:50 UTCMay 5, 01:45 UTC6h 55m
2026-05-04 BAW25GP BGI → LHR May 4, 03:54 UTCMay 4, 05:10 UTC1h 15m

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-VIIC page for operator, model, and routing details .

Mode-S 4005BB frequently asked

What is Mode-S code 4005BB?
4005BB is an ICAO 24-bit transponder address. Allocated to United Kingdom. Assigned to G-VIIC.
Where is Mode-S 4005BB registered?
Mode-S code 4005BB 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 4005BB broadcasting right now?
No active broadcast right now. Last signal was 2h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4005BB, octal 20002673, decimal 4,195,771.
What flights does 4005BB operate?
Mode-S 4005BB has broadcast 20 distinct callsigns, including BAW25GP, BAW255T, BAW23T, BAW7TG, BAW19N.