Apparatus

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sensors Mode-S transponder

400774

ICAO 24-bit transponder address · allocated to United Kingdom

Currently assigned to G-VIIW · BOEING 777-200

Hex
400774
Octal
20003564
Decimal
4,196,212
Country
GB
Tail
G-VIIW
Type
B772
No current signal · last broadcast 19h ago
Flights observed
95
Distinct callsigns
20
Country
GB
Last broadcast
19h ago

Last known position

Most recent position reported by Mode-S 400774.

Country allocation

The ICAO 24-bit address 400774 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
BAW7CP British Airways 8 2026-05-21
BAW6AC British Airways 7 2026-05-22
BAW25GP British Airways 7 2026-05-26
BAW255T British Airways 6 2026-05-25
BAW19N British Airways 5 2026-05-23
BAW18B British Airways 5 2026-05-23
BAW7W British Airways 4 2026-05-24
BAW23T British Airways 4 2026-04-17
BAW216 British Airways 4 2026-05-24
BAW7TG British Airways 3 2026-04-16
BAW2PD British Airways 3 2026-05-02
BAW20R British Airways 3 2026-05-02
BAW7NY British Airways 2 2026-05-04
BAW29C - 2 2026-04-14
BAW298 British Airways 2 2026-05-29
BAW293 - 2 2026-04-13
BAW291 British Airways 2 2026-05-01
BAW290 British Airways 2 2026-05-01
BAW21V British Airways 2 2026-05-06
BAW181 British Airways 2 2026-05-27

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-29 BAW298 ORD → LHR May 29, 04:35 UTCMay 29, 09:45 UTC5h 10m
2026-05-29 BAW298 ORD → LHR May 29, 02:05 UTCMay 29, 04:30 UTC2h 25m
2026-05-28 BAW299 LHR → ORD May 28, 12:50 UTCMay 28, 21:00 UTC8h 10m
2026-05-28 BAW11J JFK → LHR May 28, 03:30 UTCMay 28, 10:00 UTC6h 30m
2026-05-27 BAW181 LHR → EWR May 27, 12:15 UTCMay 27, 19:05 UTC6h 50m
2026-05-26 BAW25GP BGI → LHR May 26, 11:05 UTCMay 27, 05:04 UTC18h 0m
2026-05-26 BAW25GP BGI → LHR May 26, 10:44 UTCMay 27, 05:04 UTC18h 20m
2026-05-26 BAW25GP BGI → LHR May 26, 03:35 UTCMay 26, 05:10 UTC1h 35m
2026-05-25 BAW255T LHR → BGI May 25, 10:40 UTCMay 25, 11:50 UTC1h 10m
2026-05-24 BAW216 IAD → LHR May 24, 23:00 UTCMay 25, 05:30 UTC6h 30m
2026-05-24 BAW7W LHR → IAD May 24, 12:00 UTCMay 24, 19:30 UTC7h 30m
2026-05-23 BAW18B BDA → LHR May 23, 23:15 UTCMay 24, 05:55 UTC6h 40m
2026-05-23 BAW19N LHR → BDA May 23, 20:35 UTCMay 23, 20:50 UTC15m
2026-05-23 BAW19N LHR → BDA May 23, 13:55 UTCMay 23, 15:10 UTC1h 15m
2026-05-22 BAW461 MAD → LHR May 22, 17:20 UTCMay 22, 19:30 UTC2h 10m
2026-05-22 BAW46EZ LHR → MAD May 22, 13:05 UTCMay 22, 15:00 UTC1h 55m
2026-05-22 BAW6AC ORD → LHR May 22, 03:10 UTCMay 22, 10:05 UTC6h 55m
2026-05-21 BAW7CP LHR → ORD May 21, 14:55 UTCMay 21, 22:45 UTC7h 50m
2026-05-21 BAW6AC ORD → LHR May 21, 03:15 UTCMay 21, 10:00 UTC6h 45m
2026-05-20 BAW7CP LHR → ORD May 20, 15:10 UTCMay 20, 23:25 UTC8h 15m
2026-05-20 BAW6AC ORD → LHR May 20, 02:45 UTCMay 20, 09:45 UTC7h 1m
2026-05-19 BAW7CP LHR → ORD May 19, 14:40 UTCMay 19, 22:40 UTC8h 0m
2026-05-19 BAW6AC ORD → LHR May 19, 02:45 UTCMay 19, 10:15 UTC7h 30m
2026-05-18 BAW7CP LHR → ORD May 18, 15:00 UTCMay 18, 23:05 UTC8h 4m
2026-05-18 BAW6AC ORD → LHR May 18, 03:35 UTCMay 18, 10:40 UTC7h 5m
2026-05-17 BAW7CP LHR → ORD May 17, 15:05 UTCMay 17, 23:20 UTC8h 15m
2026-05-15 BAW25GP BGI → LHR May 15, 11:10 UTCMay 16, 05:30 UTC18h 19m
2026-05-14 BAW11J JFK → LHR May 14, 23:05 UTCMay 15, 05:20 UTC6h 15m
2026-05-14 BAW181 LHR → EWR May 14, 12:10 UTCMay 14, 19:15 UTC7h 5m
2026-05-12 BAW6AC ORD → LHR May 12, 03:25 UTCMay 12, 10:35 UTC7h 10m
2026-05-11 BAW7CP LHR → ORD May 11, 21:10 UTCMay 11, 22:35 UTC1h 24m
2026-05-11 BAW7CP LHR → ORD May 11, 15:15 UTCMay 11, 21:05 UTC5h 51m
2026-05-07 BAW120 CVG → LHR May 7, 02:05 UTCMay 7, 09:05 UTC7h 0m
2026-05-06 BAW21V LHR → CVG May 6, 15:30 UTCMay 6, 23:45 UTC8h 14m
2026-05-06 BAW6AC ORD → LHR May 6, 02:35 UTCMay 6, 09:40 UTC7h 5m
2026-05-05 BAW7CP LHR → ORD May 5, 14:40 UTCMay 5, 22:30 UTC7h 50m
2026-05-05 BAW172 JFK → LHR May 5, 01:40 UTCMay 5, 08:05 UTC6h 25m
2026-05-04 BAW7NY LHR → JFK May 4, 09:40 UTCMay 4, 16:35 UTC6h 55m
2026-05-03 BAW216 IAD → LHR May 3, 22:20 UTCMay 4, 05:20 UTC7h 0m
2026-05-03 BAW7W LHR → IAD May 3, 12:00 UTCMay 3, 19:34 UTC7h 35m
2026-05-02 BAW20R ORD → LHR May 2, 22:30 UTCMay 3, 06:05 UTC7h 34m
2026-05-02 BAW2PD LHR → ORD May 2, 10:50 UTCMay 2, 18:40 UTC7h 50m
2026-05-01 BAW290 LHR → IAD May 1, 23:30 UTCMay 2, 06:20 UTC6h 50m
2026-05-01 BAW291 LHR → SFO May 1, 13:35 UTCMay 1, 21:00 UTC7h 25m
2026-04-30 BAW216 IAD → LHR Apr 30, 22:40 UTCMay 1, 05:30 UTC6h 50m
2026-04-30 BAW7W LHR → IAD Apr 30, 12:00 UTCApr 30, 19:20 UTC7h 20m
2026-04-30 BAW2LJ BWI → LHR Apr 30, 02:00 UTCApr 30, 09:00 UTC7h 0m
2026-04-29 BAW22B LHR → BWI Apr 29, 15:55 UTCApr 29, 23:20 UTC7h 24m
2026-04-29 BAW172 JFK → LHR Apr 29, 01:35 UTCApr 29, 08:25 UTC6h 50m
2026-04-28 BAW7NY LHR → JFK Apr 28, 09:30 UTCApr 28, 16:15 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-VIIW page for operator, model, and routing details .

Mode-S 400774 frequently asked

What is Mode-S code 400774?
400774 is an ICAO 24-bit transponder address. Allocated to United Kingdom. Assigned to G-VIIW.
Where is Mode-S 400774 registered?
Mode-S code 400774 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 400774 broadcasting right now?
No active broadcast right now. Last signal was 19h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 400774, octal 20003564, decimal 4,196,212.
What flights does 400774 operate?
Mode-S 400774 has broadcast 20 distinct callsigns, including BAW7CP, BAW6AC, BAW25GP, BAW255T, BAW19N.