Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

4006C1

ICAO 24-bit transponder address · allocated to United Kingdom

Currently assigned to G-VIIO · BOEING 777-200

Hex
4006C1
Octal
20003301
Decimal
4,196,033
Country
GB
Tail
G-VIIO
Type
B772
Transponder active on ground
Flights observed
140
Distinct callsigns
20
Country
GB
Last broadcast
48m ago

Last known position

Most recent position reported by Mode-S 4006C1.

Country allocation

The ICAO 24-bit address 4006C1 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
BAW63H - 22 2026-07-12
BAW43C - 21 2026-07-12
BAW12TB - 14 2026-06-28
BAW12J - 14 2026-06-27
BAW17PA British Airways 9 2026-06-14
BAW2279 British Airways 7 2026-05-29
BAW2278 British Airways 7 2026-05-29
BAW22G - 6 2026-07-13
BAW2256 British Airways 6 2026-06-14
BAW2238 - 6 2026-06-21
BAW2239 - 5 2026-06-21
BAW9VA - 4 2026-06-25
BAW5KW - 3 2026-06-25
BAW2204 - 3 2026-06-24
BAW2161 British Airways 3 2026-06-10
BAW2067 British Airways 3 2026-05-26
BAW2160 British Airways 2 2026-05-27
BAW9173 - 1 2026-06-28
BAW9170 - 1 2026-07-11
BAW39D - 1 2026-06-26

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-13 BAW22G - Jul 13, 09:25 UTCJul 14, 04:15 UTC18h 50m
2026-07-12 BAW63H MCO → LGW Jul 12, 22:30 UTCJul 13, 06:25 UTC7h 55m
2026-07-12 BAW43C LGW → MCO Jul 12, 10:15 UTCJul 12, 19:30 UTC9h 15m
2026-07-11 BAW9170 - Jul 11, 21:05 UTCJul 11, 21:20 UTC15m
2026-06-28 BAW9173 LGW → LHR Jun 28, 16:09 UTCJun 28, 16:25 UTC15m
2026-06-28 BAW12TB TPA → LGW Jun 28, 00:45 UTCJun 28, 08:39 UTC7h 55m
2026-06-27 BAW12J LGW → TPA Jun 27, 13:24 UTCJun 27, 22:29 UTC9h 5m
2026-06-27 BAW38W MCO → LGW Jun 27, 01:35 UTCJun 27, 09:19 UTC7h 45m
2026-06-26 BAW39D LGW → MCO Jun 26, 14:09 UTCJun 26, 22:55 UTC8h 45m
2026-06-25 BAW5KW - Jun 25, 20:45 UTCJun 26, 10:15 UTC13h 30m
2026-06-25 BAW9VA LGW → LGW Jun 25, 10:50 UTCJun 26, 10:15 UTC23h 25m
2026-06-24 BAW2204 - Jun 24, 12:20 UTCJun 25, 06:40 UTC18h 20m
2026-06-24 BAW2204 LGW → LGW Jun 24, 11:09 UTCJun 25, 06:40 UTC19h 30m
2026-06-23 BAW12TB TPA → LGW Jun 23, 23:05 UTCJun 24, 07:10 UTC8h 5m
2026-06-23 BAW12J LGW → TPA Jun 23, 11:59 UTCJun 23, 20:40 UTC8h 40m
2026-06-22 BAW12TB TPA → LGW Jun 22, 23:10 UTCJun 23, 07:09 UTC8h 0m
2026-06-22 BAW12J LGW → TPA Jun 22, 11:44 UTCJun 22, 20:49 UTC9h 5m
2026-06-21 BAW2238 - Jun 21, 10:19 UTCJun 22, 04:34 UTC18h 15m
2026-06-21 BAW2239 LGW → LGW Jun 21, 09:35 UTCJun 22, 04:34 UTC19h 0m
2026-06-20 BAW22G LGW → LGW Jun 20, 10:39 UTCJun 21, 05:30 UTC18h 50m
2026-06-19 BAW63H MCO → LGW Jun 19, 21:39 UTCJun 20, 05:29 UTC7h 50m
2026-06-19 BAW43C LGW → MCO Jun 19, 10:14 UTCJun 19, 19:25 UTC9h 10m
2026-06-18 BAW63H MCO → LGW Jun 18, 21:45 UTCJun 19, 05:30 UTC7h 44m
2026-06-18 BAW43C LGW → MCO Jun 18, 10:30 UTCJun 18, 19:10 UTC8h 40m
2026-06-17 BAW22G LGW → LGW Jun 17, 11:10 UTCJun 18, 06:00 UTC18h 50m
2026-06-16 BAW63H MCO → LGW Jun 16, 21:20 UTCJun 17, 05:05 UTC7h 45m
2026-06-16 BAW43C LGW → MCO Jun 16, 09:45 UTCJun 16, 18:39 UTC8h 55m
2026-06-15 BAW63H - Jun 15, 21:25 UTCJun 16, 05:20 UTC7h 55m
2026-06-15 BAW43C LGW → MCO Jun 15, 10:20 UTCJun 15, 19:00 UTC8h 40m
2026-06-14 BAW17PA LGW → ANU Jun 14, 10:20 UTCJun 15, 03:35 UTC17h 14m
2026-06-14 BAW2256 ANU → LGW Jun 14, 05:20 UTCJun 14, 06:20 UTC1h 0m
2026-06-13 BAW2256 ANU → LGW Jun 13, 10:20 UTCJun 14, 06:20 UTC20h 1m
2026-06-13 BAW17PA LGW → ANU Jun 13, 09:30 UTCJun 14, 06:20 UTC20h 50m
2026-06-11 BAW5KW UVF → LGW Jun 11, 21:10 UTCJun 12, 09:50 UTC12h 41m
2026-06-11 BAW9VA LGW → UVF Jun 11, 10:45 UTCJun 12, 09:50 UTC23h 6m
2026-06-10 BAW2161 LGW → ISB Jun 10, 10:00 UTCJun 11, 03:55 UTC17h 55m
2026-06-09 BAW2239 LGW → POS Jun 9, 10:35 UTCJun 10, 05:25 UTC18h 50m
2026-06-08 BAW12TB TPA → LGW Jun 8, 23:00 UTCJun 9, 07:05 UTC8h 5m
2026-06-08 BAW12J LGW → TPA Jun 8, 11:45 UTCJun 8, 20:25 UTC8h 40m
2026-06-07 BAW12TB TPA → LGW Jun 7, 23:05 UTCJun 8, 07:10 UTC8h 5m
2026-06-07 BAW12J LGW → TPA Jun 7, 11:40 UTCJun 7, 20:25 UTC8h 45m
2026-06-07 BAW5KW UVF → LGW Jun 7, 07:15 UTCJun 7, 08:15 UTC1h 0m
2026-06-06 BAW9VA LGW → UVF Jun 6, 10:39 UTCJun 7, 08:15 UTC21h 35m
2026-06-05 BAW63H MCO → LGW Jun 5, 21:40 UTCJun 6, 05:25 UTC7h 45m
2026-06-05 BAW43C LGW → MCO Jun 5, 10:15 UTCJun 5, 19:00 UTC8h 45m
2026-06-04 BAW17PA LGW → ANU Jun 4, 10:30 UTCJun 5, 03:50 UTC17h 20m
2026-06-03 BAW63H MCO → LGW Jun 3, 21:40 UTCJun 4, 05:10 UTC7h 30m
2026-06-03 BAW43C LGW → MCO Jun 3, 10:15 UTCJun 3, 18:50 UTC8h 35m
2026-06-02 BAW63H MCO → LGW Jun 2, 21:50 UTCJun 3, 05:10 UTC7h 20m
2026-06-02 BAW43C LGW → MCO Jun 2, 10:35 UTCJun 2, 19:15 UTC8h 40m

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

Mode-S 4006C1 frequently asked

What is Mode-S code 4006C1?
4006C1 is an ICAO 24-bit transponder address. Allocated to United Kingdom. Assigned to G-VIIO.
Where is Mode-S 4006C1 registered?
Mode-S code 4006C1 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 4006C1 broadcasting right now?
Mode-S 4006C1 is currently broadcasting from the ground.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4006C1, octal 20003301, decimal 4,196,033.
What flights does 4006C1 operate?
Mode-S 4006C1 has broadcast 20 distinct callsigns, including BAW63H, BAW43C, BAW12TB, BAW12J, BAW17PA.