Apparatus

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sensors Mode-S transponder

400772

ICAO 24-bit transponder address · allocated to United Kingdom

Currently assigned to G-VIIU · BOEING 777-200

Hex
400772
Octal
20003562
Decimal
4,196,210
Country
GB
Tail
G-VIIU
Type
B772
No current signal · last broadcast Jul 26, 20:25 UTC
Flights observed
219
Distinct callsigns
20
Country
GB
Last broadcast
Jul 26, 20:25 UTC

Last known position

Most recent position reported by Mode-S 400772.

Country allocation

The ICAO 24-bit address 400772 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
BAW2279 British Airways 20 2026-07-26
BAW2278 British Airways 17 2026-07-25
BAW39D - 16 2026-06-30
BAW38W - 14 2026-07-01
BAW12J - 14 2026-07-06
BAW63H British Airways 13 2026-07-22
BAW43C British Airways 12 2026-07-22
BAW12TB - 12 2026-07-06
BAW5KW - 10 2026-07-06
BAW2160 British Airways 10 2026-05-29
BAW2156 British Airways 8 2026-07-20
BAW9VA - 7 2026-07-05
BAW25K - 6 2026-06-27
BAW2256 - 6 2026-06-17
BAW2239 - 6 2026-06-18
BAW2161 British Airways 6 2026-04-17
BAW2158 - 6 2026-07-05
BAW17PA British Airways 6 2026-05-19
BAW23K - 5 2026-06-27
BAW22G British Airways 4 2026-06-08

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 BAW2279 LGW → YVR Jul 26, 10:50 UTCJul 26, 20:15 UTC9h 25m
2026-07-25 BAW2278 YVR → LGW Jul 25, 22:50 UTCJul 26, 07:10 UTC8h 21m
2026-07-25 BAW2279 LGW → YVR Jul 25, 11:00 UTCJul 25, 20:20 UTC9h 20m
2026-07-22 BAW63H MCO → LGW Jul 22, 21:45 UTCJul 23, 05:40 UTC7h 55m
2026-07-22 BAW43C LGW → MCO Jul 22, 11:10 UTCJul 22, 18:30 UTC7h 20m
2026-07-22 BAW63H MCO → LGW Jul 22, 04:05 UTCJul 22, 05:25 UTC1h 20m
2026-07-21 BAW63H MCO → LGW Jul 21, 21:20 UTCJul 22, 00:30 UTC3h 10m
2026-07-21 BAW43C LGW → MCO Jul 21, 10:05 UTCJul 21, 18:20 UTC8h 15m
2026-07-20 BAW2156 ANU → LGW Jul 20, 10:20 UTCJul 21, 04:05 UTC17h 45m
2026-07-19 BAW2156 - Jul 19, 10:35 UTCJul 20, 04:45 UTC18h 10m
2026-07-18 BAW63H MCO → LGW Jul 18, 21:20 UTCJul 19, 05:30 UTC8h 10m
2026-07-18 BAW43C LGW → MCO Jul 18, 10:20 UTCJul 18, 18:45 UTC8h 25m
2026-07-13 - - Jul 13, 09:45 UTCJul 13, 09:55 UTC10m
2026-07-12 BAW2278 - Jul 12, 22:35 UTCJul 13, 07:10 UTC8h 35m
2026-07-12 BAW2279 LGW → YVR Jul 12, 11:01 UTCJul 12, 20:15 UTC9h 15m
2026-07-11 BAW2278 YVR → LGW Jul 11, 23:00 UTCJul 12, 07:50 UTC8h 50m
2026-07-11 BAW2279 - Jul 11, 15:35 UTCJul 11, 20:25 UTC4h 50m
2026-07-11 BAW2279 - Jul 11, 11:05 UTCJul 11, 14:00 UTC2h 55m
2026-07-10 BAW2278 YVR → LGW Jul 10, 22:45 UTCJul 11, 07:10 UTC8h 25m
2026-07-10 BAW2279 LGW → YVR Jul 10, 11:00 UTCJul 10, 20:05 UTC9h 5m
2026-07-09 BAW2278 YVR → LGW Jul 9, 22:40 UTCJul 10, 07:30 UTC8h 50m
2026-07-09 BAW2279 LGW → YVR Jul 9, 10:55 UTCJul 9, 19:55 UTC9h 0m
2026-07-08 BAW2278 YVR → LGW Jul 8, 23:25 UTCJul 9, 08:05 UTC8h 40m
2026-07-08 BAW2279 LGW → YVR Jul 8, 11:55 UTCJul 8, 20:55 UTC9h 0m
2026-07-07 BAW2278 - Jul 7, 23:10 UTCJul 8, 08:00 UTC8h 50m
2026-07-07 BAW2279 LGW → YVR Jul 7, 11:45 UTCJul 7, 21:00 UTC9h 15m
2026-07-06 BAW12TB TPA → LGW Jul 6, 23:05 UTCJul 7, 07:10 UTC8h 5m
2026-07-06 BAW12J LGW → TPA Jul 6, 11:50 UTCJul 6, 20:35 UTC8h 45m
2026-07-06 BAW5KW - Jul 6, 06:35 UTCJul 6, 08:35 UTC2h 0m
2026-07-06 BAW5KW - Jul 6, 00:40 UTCJul 6, 00:55 UTC15m
2026-07-05 BAW2158 - Jul 5, 22:50 UTCJul 5, 23:05 UTC15m
2026-07-05 BAW2159 - Jul 5, 20:20 UTCJul 5, 20:35 UTC15m
2026-07-05 BAW9VA - Jul 5, 10:40 UTCJul 5, 11:35 UTC55m
2026-07-04 BAW2278 YVR → LGW Jul 4, 22:45 UTCJul 5, 07:05 UTC8h 20m
2026-07-04 BAW2279 LGW → YVR Jul 4, 11:00 UTCJul 4, 20:25 UTC9h 25m
2026-07-04 BAW86 - Jul 4, 09:40 UTCJul 4, 09:50 UTC10m
2026-07-03 BAW12TB TPA → LGW Jul 3, 23:00 UTCJul 4, 07:10 UTC8h 10m
2026-07-03 BAW12J LGW → TPA Jul 3, 11:40 UTCJul 3, 20:15 UTC8h 35m
2026-07-03 BAW2278 YVR → LGW Jul 3, 06:05 UTCJul 3, 07:35 UTC1h 30m
2026-07-02 BAW2278 YVR → LGW Jul 2, 22:50 UTCJul 2, 23:50 UTC1h 0m
2026-07-02 BAW2279 LGW → YVR Jul 2, 11:00 UTCJul 2, 20:05 UTC9h 5m
2026-07-01 BAW38W MCO → LGW Jul 1, 02:15 UTCJul 1, 10:20 UTC8h 5m
2026-06-30 BAW39D LGW → MCO Jun 30, 13:55 UTCJun 30, 22:50 UTC8h 55m
2026-06-30 BAW38W MCO → LGW Jun 30, 01:14 UTCJun 30, 08:55 UTC7h 40m
2026-06-29 BAW39D LGW → MCO Jun 29, 13:44 UTCJun 29, 22:55 UTC9h 10m
2026-06-29 BAW38W MCO → LGW Jun 29, 02:30 UTCJun 29, 10:10 UTC7h 40m
2026-06-28 BAW39D LGW → MCO Jun 28, 15:14 UTCJun 28, 23:54 UTC8h 40m
2026-06-27 BAW25K - Jun 27, 23:10 UTCJun 28, 11:29 UTC12h 20m
2026-06-27 BAW23K LGW → LGW Jun 27, 15:00 UTCJun 28, 11:29 UTC20h 30m
2026-06-27 BAW25K - Jun 27, 08:44 UTCJun 27, 10:00 UTC1h 15m

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

Mode-S 400772 frequently asked

What is Mode-S code 400772?
400772 is an ICAO 24-bit transponder address. Allocated to United Kingdom. Assigned to G-VIIU.
Where is Mode-S 400772 registered?
Mode-S code 400772 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 400772 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 20:25 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 400772, octal 20003562, decimal 4,196,210.
What flights does 400772 operate?
Mode-S 400772 has broadcast 20 distinct callsigns, including BAW2279, BAW2278, BAW39D, BAW38W, BAW12J.