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
Broadcasting now · callsign BAW63H · 13,775 ft
Flights observed
97
Distinct callsigns
20
Country
GB
Last broadcast
29m ago

Current position

400775 is currently broadcasting. Map zoomed to live position.

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 14 2026-05-29
BAW63H British Airways 10 2026-05-29
BAW12TB British Airways 8 2026-05-24
BAW12J British Airways 8 2026-05-24
BAW5KW British Airways 7 2026-05-24
BAW9VA British Airways 6 2026-05-23
BAW2158 British Airways 6 2026-05-20
BAW17PA British Airways 5 2026-05-28
BAW39D British Airways 4 2026-04-21
BAW38W British Airways 4 2026-04-22
BAW2238 British Airways 4 2026-05-18
BAW2204 British Airways 4 2026-05-09
BAW22G British Airways 3 2026-05-09
BAW2159 British Airways 3 2026-04-28
BAW2239 British Airways 2 2026-05-17
BAW2067 British Airways 2 2026-05-21
BAW2066 British Airways 2 2026-05-22
BAW25K British Airways 1 2026-04-18
BAW23K British Airways 1 2026-04-17
BAW2256 British Airways 1 2026-05-27

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-29 BAW63H MCO → LGW May 29, 22:20 UTCMay 30, 05:15 UTC6h 55m
2026-05-29 BAW43C LGW → MCO May 29, 10:10 UTCMay 29, 18:55 UTC8h 45m
2026-05-28 BAW17PA LGW → ANU May 28, 10:15 UTCMay 29, 04:30 UTC18h 15m
2026-05-27 BAW63H MCO → LGW May 27, 22:05 UTCMay 28, 05:50 UTC7h 45m
2026-05-27 BAW43C LGW → MCO May 27, 10:50 UTCMay 27, 19:50 UTC9h 0m
2026-05-27 BAW2256 ANU → LGW May 27, 05:19 UTCMay 27, 06:40 UTC1h 20m
2026-05-26 BAW17PA LGW → ANU May 26, 09:49 UTCMay 27, 06:40 UTC20h 50m
2026-05-25 BAW17PA LGW → ANU May 25, 10:35 UTCMay 26, 04:00 UTC17h 25m
2026-05-24 BAW12TB TPA → LGW May 24, 23:30 UTCMay 25, 08:00 UTC8h 30m
2026-05-24 BAW12J LGW → TPA May 24, 11:55 UTCMay 24, 20:45 UTC8h 50m
2026-05-24 BAW5KW UVF → LGW May 24, 06:55 UTCMay 24, 08:20 UTC1h 25m
2026-05-23 BAW5KW UVF → LGW May 23, 11:20 UTCMay 24, 08:20 UTC21h 0m
2026-05-23 BAW9VA LGW → UVF May 23, 10:35 UTCMay 24, 08:20 UTC21h 46m
2026-05-22 BAW12TB TPA → LGW May 22, 23:55 UTCMay 23, 07:50 UTC7h 54m
2026-05-22 BAW12J LGW → TPA May 22, 11:50 UTCMay 22, 20:40 UTC8h 50m
2026-05-22 BAW2066 ACC → LGW May 22, 01:15 UTCMay 22, 03:35 UTC2h 20m
2026-05-21 BAW2067 LGW → ACC May 21, 12:05 UTCMay 21, 14:05 UTC2h 0m
2026-05-20 BAW12TB TPA → LGW May 20, 23:05 UTCMay 21, 07:15 UTC8h 10m
2026-05-20 BAW12J LGW → TPA May 20, 11:40 UTCMay 20, 20:25 UTC8h 45m
2026-05-20 BAW2158 GND → UVF May 20, 07:05 UTCMay 20, 08:00 UTC55m
2026-05-19 BAW2158 GND → UVF May 19, 11:20 UTCMay 20, 08:00 UTC20h 41m
2026-05-19 BAW9VA LGW → UVF May 19, 10:40 UTCMay 20, 08:00 UTC21h 21m
2026-05-18 BAW63H MCO → LGW May 18, 21:45 UTCMay 19, 05:40 UTC7h 55m
2026-05-18 BAW43C LGW → MCO May 18, 17:55 UTCMay 18, 18:40 UTC44m
2026-05-18 BAW43C LGW → MCO May 18, 10:15 UTCMay 18, 15:35 UTC5h 20m
2026-05-18 BAW2238 POS → LGW May 18, 02:40 UTCMay 18, 03:45 UTC1h 5m
2026-05-17 BAW2239 LGW → POS May 17, 08:55 UTCMay 17, 10:05 UTC1h 10m
2026-05-14 BAW5KW UVF → LGW May 14, 20:45 UTCMay 15, 10:55 UTC14h 10m
2026-05-14 BAW5KW UVF → LGW May 14, 11:20 UTCMay 15, 10:55 UTC23h 35m
2026-05-14 BAW9VA LGW → UVF May 14, 10:45 UTCMay 14, 21:10 UTC10h 25m
2026-05-13 BAW12TB TPA → LGW May 13, 23:10 UTCMay 14, 07:20 UTC8h 10m
2026-05-13 BAW12J LGW → TPA May 13, 11:50 UTCMay 13, 20:55 UTC9h 5m
2026-05-12 BAW2238 POS → LGW May 12, 11:20 UTCMay 13, 05:35 UTC18h 15m
2026-05-12 BAW2239 LGW → POS May 12, 10:30 UTCMay 13, 05:35 UTC19h 5m
2026-05-10 BAW2238 POS → LGW May 10, 09:20 UTCMay 11, 04:15 UTC18h 55m
2026-05-10 BAW2238 POS → LGW May 10, 09:10 UTCMay 11, 04:15 UTC19h 5m
2026-05-09 BAW2204 PUJ → LGW May 9, 21:40 UTCMay 10, 05:30 UTC7h 50m
2026-05-09 BAW22G LGW → PUJ May 9, 10:30 UTCMay 9, 18:05 UTC7h 35m
2026-05-07 BAW12TB TPA → LGW May 7, 23:09 UTCMay 8, 07:14 UTC8h 5m
2026-05-07 BAW12J LGW → TPA May 7, 11:50 UTCMay 7, 20:45 UTC8h 55m
2026-05-06 BAW2204 PUJ → LGW May 6, 11:35 UTCMay 7, 06:35 UTC18h 59m
2026-05-05 BAW12TB TPA → LGW May 5, 22:55 UTCMay 6, 06:45 UTC7h 50m
2026-05-05 BAW12J LGW → TPA May 5, 11:40 UTCMay 5, 20:30 UTC8h 50m
2026-05-04 BAW17PA LGW → ANU May 4, 10:55 UTCMay 5, 04:05 UTC17h 11m
2026-05-03 BAW63H MCO → LGW May 3, 21:50 UTCMay 4, 05:45 UTC7h 55m
2026-05-03 BAW43C LGW → MCO May 3, 10:15 UTCMay 3, 19:10 UTC8h 55m
2026-05-03 BAW43C LGW → MCO May 3, 09:50 UTCMay 3, 10:00 UTC10m
2026-05-02 BAW63H MCO → LGW May 2, 22:10 UTCMay 3, 05:55 UTC7h 44m
2026-05-02 BAW43C LGW → MCO May 2, 14:55 UTCMay 2, 18:50 UTC3h 55m
2026-05-02 BAW43C LGW → MCO May 2, 09:55 UTCMay 2, 11:20 UTC1h 25m

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?
Yes. Mode-S 400775 is currently airborne.
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, BAW63H, BAW12TB, BAW12J, BAW5KW.