Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

400771

ICAO 24-bit transponder address · allocated to United Kingdom

Currently assigned to G-VIIT · BOEING 777-200

Hex
400771
Octal
20003561
Decimal
4,196,209
Country
GB
Tail
G-VIIT
Type
B772
No current signal · last broadcast 1h ago
Flights observed
89
Distinct callsigns
20
Country
GB
Last broadcast
1h ago

Last known position

Most recent position reported by Mode-S 400771.

Country allocation

The ICAO 24-bit address 400771 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
BAW5KW British Airways 9 2026-05-28
BAW2279 British Airways 7 2026-05-20
BAW2278 British Airways 7 2026-05-20
BAW12J British Airways 6 2026-05-27
BAW9VA British Airways 5 2026-05-28
BAW63H British Airways 5 2026-05-23
BAW43C British Airways 5 2026-05-23
BAW17PA British Airways 5 2026-04-20
BAW12TB British Airways 5 2026-05-27
BAW39D British Airways 4 2026-05-29
BAW38W British Airways 4 2026-05-30
BAW2067 British Airways 4 2026-04-26
BAW2159 British Airways 3 2026-04-30
BAW2066 British Airways 3 2026-04-19
BAW25K British Airways 2 2026-04-19
BAW22G British Airways 2 2026-05-25
BAW2239 British Airways 2 2026-05-24
BAW2238 British Airways 2 2026-05-26
BAW2204 British Airways 2 2026-05-26
BAW2160 British Airways 2 2026-04-29

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-30 BAW38W MCO → LGW May 30, 01:35 UTCMay 30, 04:15 UTC2h 40m
2026-05-29 BAW39D LGW → MCO May 29, 14:00 UTCMay 29, 22:35 UTC8h 35m
2026-05-28 BAW5KW UVF → LGW May 28, 20:55 UTCMay 29, 10:15 UTC13h 20m
2026-05-28 BAW9VA LGW → UVF May 28, 10:45 UTCMay 29, 10:15 UTC23h 30m
2026-05-27 BAW12TB TPA → LGW May 27, 23:00 UTCMay 28, 07:00 UTC8h 0m
2026-05-27 BAW12J LGW → TPA May 27, 11:45 UTCMay 27, 20:30 UTC8h 45m
2026-05-26 BAW2238 POS → LGW May 26, 10:50 UTCMay 27, 05:45 UTC18h 55m
2026-05-26 BAW2204 PUJ → LGW May 26, 03:55 UTCMay 26, 04:50 UTC55m
2026-05-25 BAW22G LGW → PUJ May 25, 09:20 UTCMay 25, 17:35 UTC8h 15m
2026-05-24 BAW2239 LGW → POS May 24, 09:00 UTCMay 25, 03:35 UTC18h 35m
2026-05-23 BAW63H MCO → LGW May 23, 21:55 UTCMay 24, 05:45 UTC7h 50m
2026-05-23 BAW43C LGW → MCO May 23, 10:15 UTCMay 23, 19:05 UTC8h 51m
2026-05-22 BAW9607 JFK → LHR May 22, 22:15 UTCMay 23, 05:55 UTC7h 39m
2026-05-21 BAW12J LGW → TPA May 21, 11:40 UTCMay 21, 20:35 UTC8h 55m
2026-05-20 BAW2278 YVR → LGW May 20, 23:05 UTCMay 21, 08:15 UTC9h 10m
2026-05-20 BAW2279 LGW → YVR May 20, 10:55 UTCMay 20, 19:55 UTC9h 0m
2026-05-19 BAW2278 YVR → LGW May 19, 22:55 UTCMay 20, 07:50 UTC8h 56m
2026-05-19 BAW2279 LGW → YVR May 19, 11:05 UTCMay 19, 20:00 UTC8h 55m
2026-05-18 BAW2278 YVR → LGW May 18, 22:45 UTCMay 19, 07:55 UTC9h 10m
2026-05-18 BAW2279 LGW → YVR May 18, 11:00 UTCMay 18, 20:05 UTC9h 4m
2026-05-17 BAW63H MCO → LGW May 17, 22:35 UTCMay 18, 06:25 UTC7h 50m
2026-05-17 BAW43C LGW → MCO May 17, 10:15 UTCMay 17, 19:05 UTC8h 50m
2026-05-16 BAW63H MCO → LGW May 16, 22:15 UTCMay 17, 06:15 UTC8h 0m
2026-05-16 BAW43C LGW → MCO May 16, 10:01 UTCMay 16, 18:45 UTC8h 45m
2026-05-13 BAW2204 PUJ → LGW May 13, 12:20 UTCMay 14, 06:35 UTC18h 15m
2026-05-13 BAW22G LGW → PUJ May 13, 11:20 UTCMay 14, 06:35 UTC19h 15m
2026-05-12 BAW12TB TPA → LGW May 12, 23:30 UTCMay 13, 07:45 UTC8h 15m
2026-05-12 BAW12J LGW → TPA May 12, 11:35 UTCMay 12, 21:10 UTC9h 35m
2026-05-12 BAW12TB TPA → LGW May 12, 06:15 UTCMay 12, 07:35 UTC1h 20m
2026-05-11 BAW12J LGW → TPA May 11, 12:10 UTCMay 11, 21:00 UTC8h 51m
2026-05-11 BAW5KW UVF → LGW May 11, 05:40 UTCMay 11, 08:50 UTC3h 10m
2026-05-10 BAW5KW UVF → LGW May 10, 12:19 UTCMay 11, 08:50 UTC20h 30m
2026-05-10 BAW5KW UVF → LGW May 10, 11:25 UTCMay 11, 08:50 UTC21h 25m
2026-05-09 BAW2278 YVR → LGW May 9, 23:15 UTCMay 10, 08:10 UTC8h 55m
2026-05-09 BAW2279 LGW → YVR May 9, 11:00 UTCMay 9, 20:15 UTC9h 15m
2026-05-08 BAW12TB TPA → LGW May 8, 23:00 UTCMay 9, 07:15 UTC8h 15m
2026-05-08 BAW12J LGW → TPA May 8, 11:34 UTCMay 8, 20:45 UTC9h 10m
2026-05-07 BAW2278 YVR → LGW May 7, 22:45 UTCMay 8, 07:50 UTC9h 5m
2026-05-07 BAW2279 LGW → YVR May 7, 11:30 UTCMay 7, 20:25 UTC8h 55m
2026-05-06 BAW2278 YVR → LGW May 6, 22:50 UTCMay 7, 07:45 UTC8h 55m
2026-05-06 BAW2279 LGW → YVR May 6, 11:10 UTCMay 6, 20:20 UTC9h 9m
2026-05-05 BAW2278 YVR → LGW May 5, 22:35 UTCMay 6, 07:35 UTC9h 0m
2026-05-05 BAW2279 LGW → YVR May 5, 11:10 UTCMay 5, 20:15 UTC9h 5m
2026-05-04 BAW12TB TPA → LGW May 4, 23:20 UTCMay 5, 06:55 UTC7h 35m
2026-05-04 BAW12J LGW → TPA May 4, 11:55 UTCMay 4, 21:00 UTC9h 6m
2026-05-03 BAW38W MCO → LGW May 3, 02:40 UTCMay 3, 10:30 UTC7h 49m
2026-05-02 BAW39D LGW → MCO May 2, 14:30 UTCMay 2, 23:50 UTC9h 20m
2026-05-02 BAW38W MCO → LGW May 2, 01:20 UTCMay 2, 09:20 UTC8h 1m
2026-05-01 BAW39D LGW → MCO May 1, 14:15 UTCMay 1, 22:55 UTC8h 40m
2026-05-01 BAW5KW UVF → LGW May 1, 07:25 UTCMay 1, 10:30 UTC3h 5m

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

Mode-S 400771 frequently asked

What is Mode-S code 400771?
400771 is an ICAO 24-bit transponder address. Allocated to United Kingdom. Assigned to G-VIIT.
Where is Mode-S 400771 registered?
Mode-S code 400771 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 400771 broadcasting right now?
No active broadcast right now. Last signal was 1h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 400771, octal 20003561, decimal 4,196,209.
What flights does 400771 operate?
Mode-S 400771 has broadcast 20 distinct callsigns, including BAW5KW, BAW2279, BAW2278, BAW12J, BAW9VA.