Apparatus

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sensors Mode-S transponder

4005BA

ICAO 24-bit transponder address · allocated to United Kingdom

Currently assigned to G-VIIB · BOEING 777-200

Hex
4005BA
Octal
20002672
Decimal
4,195,770
Country
GB
Tail
G-VIIB
Type
B772
Broadcasting now · callsign BAW17R · 8,975 ft
Flights observed
90
Distinct callsigns
20
Country
GB
Last broadcast
1d ago

Current position

4005BA is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 4005BA 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
BAW178 British Airways 10 2026-05-22
BAW183 British Airways 9 2026-05-21
BAW9E British Airways 4 2026-05-21
BAW82 British Airways 4 2026-05-03
BAW25GP British Airways 4 2026-05-29
BAW18B British Airways 4 2026-05-18
BAW185 British Airways 4 2026-05-20
BAW7NY British Airways 3 2026-05-14
BAW53M British Airways 3 2026-05-17
BAW29C British Airways 3 2026-05-07
BAW293 British Airways 3 2026-05-06
BAW291 British Airways 3 2026-04-28
BAW255T British Airways 3 2026-05-28
BAW252N British Airways 3 2026-05-18
BAW239 British Airways 3 2026-04-18
BAW19N British Airways 3 2026-05-18
BAW172 British Airways 3 2026-05-15
BAW290 British Airways 2 2026-04-28
BAW21V British Airways 2 2026-04-27
BAW17R British Airways 2 2026-05-25

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-29 BAW25GP BGI → LHR May 29, 03:25 UTCMay 29, 04:25 UTC1h 0m
2026-05-28 BAW255T LHR → BGI May 28, 10:20 UTCMay 28, 11:30 UTC1h 10m
2026-05-27 BAW25GP BGI → LHR May 27, 11:00 UTCMay 28, 05:10 UTC18h 10m
2026-05-27 BAW298 ORD → LHR May 27, 00:39 UTCMay 27, 07:55 UTC7h 15m
2026-05-26 BAW299 LHR → ORD May 26, 12:35 UTCMay 26, 20:29 UTC7h 55m
2026-05-26 BAW176A JFK → LHR May 26, 00:09 UTCMay 26, 06:39 UTC6h 30m
2026-05-25 BAW17R LHR → JFK May 25, 07:35 UTCMay 25, 14:40 UTC7h 5m
2026-05-22 BAW178 JFK → LHR May 22, 12:25 UTCMay 22, 18:25 UTC6h 0m
2026-05-21 BAW183 LHR → JFK May 21, 18:40 UTCMay 22, 01:45 UTC7h 5m
2026-05-21 BAW9E EWR → LHR May 21, 00:00 UTCMay 21, 06:05 UTC6h 5m
2026-05-20 BAW185 LHR → EWR May 20, 10:30 UTCMay 20, 17:50 UTC7h 20m
2026-05-20 BAW9E EWR → LHR May 20, 00:50 UTCMay 20, 07:20 UTC6h 31m
2026-05-19 BAW185 LHR → EWR May 19, 10:25 UTCMay 19, 17:30 UTC7h 5m
2026-05-18 BAW18B BDA → LHR May 18, 23:10 UTCMay 19, 05:25 UTC6h 15m
2026-05-18 BAW19N LHR → BDA May 18, 14:05 UTCMay 18, 20:55 UTC6h 49m
2026-05-18 BAW252N NAS → LHR May 18, 03:35 UTCMay 18, 10:00 UTC6h 25m
2026-05-17 BAW53M LHR → NAS May 17, 10:00 UTCMay 17, 15:20 UTC5h 20m
2026-05-16 BAW25GP BGI → LHR May 16, 10:40 UTCMay 17, 05:10 UTC18h 30m
2026-05-16 BAW18B BDA → LHR May 16, 04:00 UTCMay 16, 05:20 UTC1h 20m
2026-05-15 BAW18B BDA → LHR May 15, 23:10 UTCMay 15, 23:20 UTC10m
2026-05-15 BAW19N LHR → BDA May 15, 13:45 UTCMay 15, 20:55 UTC7h 9m
2026-05-15 BAW172 JFK → LHR May 15, 01:35 UTCMay 15, 07:40 UTC6h 5m
2026-05-14 BAW7NY LHR → JFK May 14, 09:40 UTCMay 14, 16:40 UTC7h 0m
2026-05-13 BAW216 IAD → LHR May 13, 23:05 UTCMay 14, 05:45 UTC6h 40m
2026-05-13 BAW7W LHR → IAD May 13, 13:40 UTCMay 13, 21:10 UTC7h 30m
2026-05-13 - - May 13, 11:10 UTCMay 13, 11:20 UTC10m
2026-05-12 BAW11J JFK → LHR May 12, 23:25 UTCMay 13, 05:50 UTC6h 25m
2026-05-12 BAW181 LHR → EWR May 12, 12:00 UTCMay 12, 19:10 UTC7h 10m
2026-05-12 BAW172 JFK → LHR May 12, 06:25 UTCMay 12, 07:50 UTC1h 25m
2026-05-11 BAW7NY LHR → JFK May 11, 10:35 UTCMay 11, 17:45 UTC7h 10m
2026-05-11 BAW176A JFK → LHR May 11, 00:00 UTCMay 11, 06:20 UTC6h 20m
2026-05-10 BAW178 JFK → LHR May 10, 18:15 UTCMay 10, 18:25 UTC10m
2026-05-10 BAW17R LHR → JFK May 10, 07:45 UTCMay 10, 14:40 UTC6h 55m
2026-05-09 BAW9E EWR → LHR May 9, 22:00 UTCMay 10, 04:25 UTC6h 25m
2026-05-09 BAW185 LHR → EWR May 9, 10:30 UTCMay 9, 17:35 UTC7h 5m
2026-05-08 BAW178 JFK → LHR May 8, 12:10 UTCMay 8, 18:30 UTC6h 20m
2026-05-07 BAW183 LHR → JFK May 7, 18:40 UTCMay 8, 01:59 UTC7h 20m
2026-05-07 BAW29C IAD → LHR May 7, 03:00 UTCMay 7, 09:40 UTC6h 40m
2026-05-06 BAW293 LHR → IAD May 6, 16:30 UTCMay 7, 00:10 UTC7h 39m
2026-05-06 BAW29C IAD → LHR May 6, 03:10 UTCMay 6, 09:50 UTC6h 40m
2026-05-05 BAW293 LHR → IAD May 5, 17:15 UTCMay 6, 00:46 UTC7h 30m
2026-05-05 BAW29C IAD → LHR May 5, 02:30 UTCMay 5, 09:25 UTC6h 55m
2026-05-04 BAW293 LHR → IAD May 4, 16:45 UTCMay 5, 00:00 UTC7h 16m
2026-05-03 BAW82 ABV → LHR May 3, 21:54 UTCMay 4, 13:20 UTC15h 25m
2026-05-03 BAW178 JFK → LHR May 3, 13:00 UTCMay 3, 19:15 UTC6h 15m
2026-05-02 BAW183 LHR → JFK May 2, 18:45 UTCMay 3, 01:45 UTC7h 0m
2026-05-01 BAW82 ABV → LHR May 1, 21:55 UTCMay 2, 13:15 UTC15h 20m
2026-05-01 BAW178 JFK → LHR May 1, 12:05 UTCMay 1, 18:40 UTC6h 35m
2026-04-30 BAW183 LHR → JFK Apr 30, 18:30 UTCMay 1, 01:25 UTC6h 55m
2026-04-29 BAW9E EWR → LHR Apr 29, 22:05 UTCApr 30, 04:50 UTC6h 44m

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

Mode-S 4005BA frequently asked

What is Mode-S code 4005BA?
4005BA is an ICAO 24-bit transponder address. Allocated to United Kingdom. Assigned to G-VIIB.
Where is Mode-S 4005BA registered?
Mode-S code 4005BA 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 4005BA broadcasting right now?
Yes. Mode-S 4005BA is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4005BA, octal 20002672, decimal 4,195,770.
What flights does 4005BA operate?
Mode-S 4005BA has broadcast 20 distinct callsigns, including BAW178, BAW183, BAW9E, BAW82, BAW25GP.