Apparatus

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sensors Mode-S transponder

400775

ICAO 24-bit transponder address · allocated to United Kingdom

Currently assigned to G-VIIX · BOEING 777-200

Hex
400775
Octal
20003565
Decimal
4,196,213
Country
GB
Tail
G-VIIX
Type
B772
No current signal · last broadcast Jul 26, 11:25 UTC
Flights observed
148
Distinct callsigns
20
Country
GB
Last broadcast
Jul 26, 11:25 UTC

Last known position

Most recent position reported by Mode-S 400775.

Country allocation

The ICAO 24-bit address 400775 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
BAW43C British Airways 17 2026-07-25
BAW12TB British Airways 14 2026-07-21
BAW12J British Airways 14 2026-07-21
BAW63H British Airways 13 2026-07-25
BAW5KW British Airways 9 2026-06-08
BAW17PA British Airways 8 2026-07-26
BAW9VA British Airways 7 2026-06-07
BAW2158 British Airways 6 2026-05-20
BAW39D British Airways 5 2026-06-08
BAW38W British Airways 5 2026-06-09
BAW22G British Airways 5 2026-06-03
BAW2279 British Airways 4 2026-07-22
BAW2278 British Airways 4 2026-07-22
BAW2238 British Airways 4 2026-05-18
BAW2204 British Airways 4 2026-05-09
BAW2067 British Airways 4 2026-07-23
BAW86 British Airways 3 2026-07-21
BAW264 - 3 2026-07-20
BAW2159 British Airways 3 2026-04-28
BAW2239 British Airways 2 2026-05-17

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 BAW17PA LGW → ANU Jul 26, 10:15 UTCJul 26, 11:25 UTC1h 10m
2026-07-25 BAW63H MCO → LGW Jul 25, 21:25 UTCJul 26, 05:20 UTC7h 55m
2026-07-25 BAW43C LGW → MCO Jul 25, 10:15 UTCJul 25, 18:15 UTC8h 0m
2026-07-24 BAW2161 LGW → ISB Jul 24, 09:55 UTCJul 25, 03:35 UTC17h 40m
2026-07-23 BAW2067 LGW → ACC Jul 23, 12:15 UTCJul 24, 03:25 UTC15h 10m
2026-07-22 BAW2278 YVR → LGW Jul 22, 23:15 UTCJul 23, 07:55 UTC8h 40m
2026-07-22 BAW2279 LGW → YVR Jul 22, 11:20 UTCJul 22, 20:05 UTC8h 45m
2026-07-21 BAW12TB TPA → LGW Jul 21, 23:00 UTCJul 22, 02:35 UTC3h 35m
2026-07-21 BAW12J LGW → TPA Jul 21, 12:10 UTCJul 21, 20:40 UTC8h 30m
2026-07-21 BAW86 YVR → LHR Jul 21, 10:00 UTCJul 21, 10:10 UTC10m
2026-07-20 BAW12TB TPA → LGW Jul 20, 23:15 UTCJul 21, 07:45 UTC8h 29m
2026-07-20 BAW12J LGW → TPA Jul 20, 11:55 UTCJul 20, 20:20 UTC8h 25m
2026-07-20 BAW264 - Jul 20, 09:55 UTCJul 20, 10:05 UTC10m
2026-07-19 BAW12TB TPA → LGW Jul 19, 22:55 UTCJul 20, 07:05 UTC8h 10m
2026-07-19 BAW12J LGW → TPA Jul 19, 11:50 UTCJul 19, 20:20 UTC8h 30m
2026-07-19 BAW12TB TPA → LGW Jul 19, 00:20 UTCJul 19, 08:55 UTC8h 35m
2026-07-18 BAW12J LGW → TPA Jul 18, 11:55 UTCJul 18, 20:20 UTC8h 25m
2026-07-17 BAW2278 YVR → LGW Jul 17, 22:49 UTCJul 18, 07:35 UTC8h 46m
2026-07-17 BAW2279 LGW → YVR Jul 17, 11:10 UTCJul 17, 20:25 UTC9h 15m
2026-07-16 BAW17PA LGW → LGW Jul 16, 10:35 UTCJul 17, 04:29 UTC17h 55m
2026-07-15 BAW9172 CWL → KEF Jul 15, 16:20 UTCJul 15, 16:55 UTC35m
2026-07-10 BAW264 - Jul 10, 10:25 UTCJul 10, 10:35 UTC10m
2026-07-03 BAW86 - Jul 3, 09:40 UTCJul 3, 09:55 UTC15m
2026-07-02 - - Jul 2, 13:55 UTCJul 2, 14:05 UTC10m
2026-06-22 BAW2LJ - Jun 22, 09:30 UTCJun 22, 09:40 UTC10m
2026-06-19 BAW86 - Jun 19, 09:44 UTCJun 19, 10:04 UTC20m
2026-06-16 BAW22B - Jun 16, 15:50 UTCJun 16, 16:00 UTC10m
2026-06-10 BAW9176 HND → LHR Jun 10, 10:35 UTCJun 10, 11:10 UTC35m
2026-06-09 BAW2067 LGW → ACC Jun 9, 12:15 UTCJun 10, 03:25 UTC15h 10m
2026-06-09 BAW38W MCO → LGW Jun 9, 00:50 UTCJun 9, 08:45 UTC7h 55m
2026-06-08 BAW39D LGW → MCO Jun 8, 13:20 UTCJun 8, 22:00 UTC8h 40m
2026-06-08 BAW5KW UVF → LGW Jun 8, 06:50 UTCJun 8, 08:05 UTC1h 15m
2026-06-07 BAW5KW UVF → LGW Jun 7, 11:20 UTCJun 8, 08:05 UTC20h 45m
2026-06-07 BAW9VA LGW → UVF Jun 7, 10:30 UTCJun 8, 08:05 UTC21h 35m
2026-06-06 BAW12TB TPA → LGW Jun 6, 23:05 UTCJun 7, 07:05 UTC8h 0m
2026-06-06 BAW12J LGW → TPA Jun 6, 11:35 UTCJun 6, 20:25 UTC8h 50m
2026-06-06 BAW264 IAD → LHR Jun 6, 09:55 UTCJun 6, 10:04 UTC10m
2026-06-05 BAW2278 YVR → LGW Jun 5, 22:50 UTCJun 6, 07:40 UTC8h 50m
2026-06-05 BAW2279 LGW → YVR Jun 5, 10:55 UTCJun 5, 20:05 UTC9h 10m
2026-06-04 BAW63H MCO → LGW Jun 4, 22:10 UTCJun 5, 05:35 UTC7h 25m
2026-06-04 BAW43C LGW → MCO Jun 4, 10:20 UTCJun 4, 19:05 UTC8h 45m
2026-06-03 BAW22G LGW → PUJ Jun 3, 11:20 UTCJun 4, 05:35 UTC18h 15m
2026-06-03 BAW22G LGW → PUJ Jun 3, 11:10 UTCJun 4, 05:35 UTC18h 25m
2026-06-02 BAW12TB TPA → LGW Jun 2, 23:15 UTCJun 3, 06:40 UTC7h 25m
2026-06-02 BAW12J LGW → TPA Jun 2, 11:35 UTCJun 2, 20:20 UTC8h 45m
2026-06-01 BAW2278 YVR → LGW Jun 1, 22:45 UTCJun 2, 07:15 UTC8h 30m
2026-06-01 BAW2279 LGW → YVR Jun 1, 11:05 UTCJun 1, 20:05 UTC9h 0m
2026-05-31 BAW2156 ANU → LGW May 31, 13:40 UTCJun 1, 03:45 UTC14h 5m
2026-05-31 BAW17PA LGW → ANU May 31, 10:25 UTCMay 31, 11:25 UTC1h 0m
2026-05-30 BAW63H MCO → LGW May 30, 22:10 UTCMay 30, 22:45 UTC35m

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

Mode-S 400775 frequently asked

What is Mode-S code 400775?
400775 is an ICAO 24-bit transponder address. Allocated to United Kingdom. Assigned to G-VIIX.
Where is Mode-S 400775 registered?
Mode-S code 400775 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 400775 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 11:25 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 400775, octal 20003565, decimal 4,196,213.
What flights does 400775 operate?
Mode-S 400775 has broadcast 20 distinct callsigns, including BAW43C, BAW12TB, BAW12J, BAW63H, BAW5KW.