Apparatus

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sensors Mode-S transponder

4006C3

ICAO 24-bit transponder address · allocated to United Kingdom

Currently assigned to G-VIIR · BOEING 777-200

Hex
4006C3
Octal
20003303
Decimal
4,196,035
Country
GB
Tail
G-VIIR
Type
B772
No current signal · last broadcast Jul 26, 22:15 UTC
Flights observed
158
Distinct callsigns
20
Country
GB
Last broadcast
Jul 26, 22:15 UTC

Last known position

Most recent position reported by Mode-S 4006C3.

Country allocation

The ICAO 24-bit address 4006C3 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 2026-07-26
BAW12TB - 14 2026-07-05
BAW12J - 14 2026-07-05
BAW63H British Airways 13 2026-07-26
BAW2278 British Airways 11 2026-07-21
BAW2279 British Airways 10 2026-07-21
BAW38W British Airways 8 2026-07-25
BAW17PA - 8 2026-07-14
BAW39D British Airways 6 2026-07-24
BAW2239 - 6 2026-07-12
BAW2204 British Airways 6 2026-07-22
BAW9VA British Airways 5 2026-07-23
BAW2238 - 5 2026-07-12
BAW2160 - 5 2026-06-17
BAW2158 - 5 2026-07-18
BAW25K - 4 2026-07-02
BAW22G - 4 2026-07-11
BAW2256 - 4 2026-07-15
BAW2067 British Airways 4 2026-06-25
BAW5KW British Airways 3 2026-07-24

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 BAW63H MCO → LGW Jul 26, 21:40 UTCJul 26, 22:15 UTC35m
2026-07-26 BAW43C LGW → MCO Jul 26, 10:30 UTCJul 26, 19:10 UTC8h 40m
2026-07-25 BAW38W MCO → LGW Jul 25, 01:20 UTCJul 25, 09:10 UTC7h 50m
2026-07-24 BAW39D LGW → MCO Jul 24, 14:10 UTCJul 24, 22:10 UTC8h 0m
2026-07-24 BAW5KW UVF → LGW Jul 24, 08:25 UTCJul 24, 10:10 UTC1h 45m
2026-07-24 BAW5KW UVF → LGW Jul 24, 02:40 UTCJul 24, 02:55 UTC15m
2026-07-23 BAW2159 UVF → TAB Jul 23, 20:25 UTCJul 24, 00:55 UTC4h 30m
2026-07-23 BAW9VA LGW → UVF Jul 23, 10:40 UTCJul 23, 18:15 UTC7h 35m
2026-07-22 BAW2204 PUJ → LGW Jul 22, 11:10 UTCJul 23, 06:40 UTC19h 30m
2026-07-21 BAW2278 YVR → LGW Jul 21, 22:55 UTCJul 22, 00:30 UTC1h 35m
2026-07-21 BAW2279 LGW → YVR Jul 21, 11:20 UTCJul 21, 20:45 UTC9h 25m
2026-07-20 BAW63H MCO → LGW Jul 20, 22:15 UTCJul 21, 06:30 UTC8h 14m
2026-07-20 BAW43C LGW → MCO Jul 20, 10:45 UTCJul 20, 19:00 UTC8h 15m
2026-07-19 BAW38W MCO → LGW Jul 19, 02:15 UTCJul 19, 10:35 UTC8h 20m
2026-07-18 BAW39D LGW → MCO Jul 18, 14:05 UTCJul 18, 22:35 UTC8h 30m
2026-07-18 BAW2158 GND → UVF Jul 18, 08:45 UTCJul 18, 10:10 UTC1h 25m
2026-07-18 BAW2158 - Jul 18, 02:09 UTCJul 18, 02:19 UTC10m
2026-07-16 BAW9VA - Jul 16, 10:59 UTCJul 16, 12:00 UTC1h 0m
2026-07-15 BAW63H MCO → LGW Jul 15, 21:20 UTCJul 16, 05:20 UTC8h 0m
2026-07-15 BAW43C LGW → MCO Jul 15, 10:20 UTCJul 15, 18:50 UTC8h 30m
2026-07-15 BAW2256 - Jul 15, 05:10 UTCJul 15, 06:40 UTC1h 30m
2026-07-14 BAW17PA LGW → LGW Jul 14, 09:40 UTCJul 15, 06:40 UTC20h 59m
2026-07-13 BAW63H MCO → LGW Jul 13, 21:55 UTCJul 14, 05:55 UTC8h 0m
2026-07-13 BAW43C LGW → MCO Jul 13, 10:25 UTCJul 13, 19:00 UTC8h 35m
2026-07-12 BAW2238 - Jul 12, 20:01 UTCJul 13, 03:55 UTC7h 55m
2026-07-12 BAW2239 - Jul 12, 09:05 UTCJul 12, 17:20 UTC8h 15m
2026-07-11 BAW2204 - Jul 11, 21:40 UTCJul 12, 05:25 UTC7h 45m
2026-07-11 BAW22G - Jul 11, 10:35 UTCJul 11, 18:20 UTC7h 45m
2026-07-05 BAW12TB TPA → LGW Jul 5, 23:00 UTCJul 6, 07:00 UTC8h 0m
2026-07-05 BAW12J LGW → TPA Jul 5, 11:45 UTCJul 5, 20:40 UTC8h 55m
2026-07-04 BAW2204 - Jul 4, 10:50 UTCJul 5, 05:25 UTC18h 35m
2026-07-04 BAW22G LGW → LGW Jul 4, 10:25 UTCJul 5, 05:25 UTC19h 0m
2026-07-03 BAW38W MCO → LGW Jul 3, 01:25 UTCJul 3, 09:10 UTC7h 45m
2026-07-02 BAW39D LGW → MCO Jul 2, 14:20 UTCJul 2, 22:45 UTC8h 25m
2026-07-02 BAW25K - Jul 2, 08:25 UTCJul 2, 09:45 UTC1h 20m
2026-07-01 BAW25K LGW → LGW Jul 1, 13:10 UTCJul 2, 09:45 UTC20h 35m
2026-06-30 BAW2278 YVR → LGW Jun 30, 22:55 UTCJul 1, 07:30 UTC8h 35m
2026-06-30 BAW2279 LGW → YVR Jun 30, 11:10 UTCJun 30, 20:10 UTC9h 0m
2026-06-29 BAW2278 YVR → LGW Jun 29, 22:44 UTCJun 30, 07:35 UTC8h 51m
2026-06-29 BAW2279 LGW → YVR Jun 29, 11:04 UTCJun 29, 19:54 UTC8h 50m
2026-06-28 BAW63H MCO → LGW Jun 28, 21:24 UTCJun 29, 05:04 UTC7h 40m
2026-06-28 BAW43C LGW → MCO Jun 28, 10:00 UTCJun 28, 18:44 UTC8h 45m
2026-06-27 BAW22G LGW → LGW Jun 27, 11:50 UTCJun 28, 06:34 UTC18h 45m
2026-06-26 BAW63H MCO → LGW Jun 26, 22:14 UTCJun 27, 05:49 UTC7h 35m
2026-06-26 BAW43C LGW → MCO Jun 26, 10:50 UTCJun 26, 19:30 UTC8h 40m
2026-06-25 BAW2067 LGW → ACC Jun 25, 12:54 UTCJun 26, 04:04 UTC15h 10m
2026-06-24 BAW12TB TPA → LGW Jun 24, 23:10 UTCJun 25, 06:55 UTC7h 45m
2026-06-24 BAW12J LGW → TPA Jun 24, 11:50 UTCJun 24, 20:44 UTC8h 55m
2026-06-23 BAW2278 YVR → LGW Jun 23, 22:40 UTCJun 24, 07:40 UTC9h 0m
2026-06-23 BAW2279 LGW → YVR Jun 23, 11:14 UTCJun 23, 20:19 UTC9h 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-VIIR page for operator, model, and routing details .

Mode-S 4006C3 frequently asked

What is Mode-S code 4006C3?
4006C3 is an ICAO 24-bit transponder address. Allocated to United Kingdom. Assigned to G-VIIR.
Where is Mode-S 4006C3 registered?
Mode-S code 4006C3 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 4006C3 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 22:15 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4006C3, octal 20003303, decimal 4,196,035.
What flights does 4006C3 operate?
Mode-S 4006C3 has broadcast 20 distinct callsigns, including BAW43C, BAW12TB, BAW12J, BAW63H, BAW2278.