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
- Flights observed
- 86
- Distinct callsigns
- 16
- Country
- GB
- Last broadcast
- 1h ago
Last known position
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 16 distinct
| Callsign | Airline | Flights | Last seen |
|---|---|---|---|
| BAW63H | British Airways | 14 | 2026-05-28 |
| BAW43C | British Airways | 13 | 2026-05-28 |
| BAW12TB | British Airways | 8 | 2026-05-15 |
| BAW12J | British Airways | 8 | 2026-05-15 |
| BAW2279 | British Airways | 7 | 2026-05-29 |
| BAW2278 | British Airways | 7 | 2026-05-29 |
| BAW2238 | British Airways | 5 | 2026-05-03 |
| BAW17PA | British Airways | 5 | 2026-05-21 |
| BAW2256 | British Airways | 4 | 2026-05-06 |
| BAW22G | British Airways | 3 | 2026-05-04 |
| BAW2239 | British Airways | 3 | 2026-05-03 |
| BAW2067 | British Airways | 3 | 2026-05-26 |
| BAW2161 | British Airways | 2 | 2026-05-13 |
| BAW2160 | British Airways | 2 | 2026-05-27 |
| BAW2204 | British Airways | 1 | 2026-04-22 |
| BAW2156 | British Airways | 1 | 2026-05-10 |
Recent flights last 50
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-05-29 | BAW2278 | YVR → LGW | May 29, 22:50 UTC | May 30, 00:00 UTC | 1h 10m |
| 2026-05-29 | BAW2279 | LGW → YVR | May 29, 10:45 UTC | May 29, 19:55 UTC | 9h 10m |
| 2026-05-28 | BAW63H | MCO → LGW | May 28, 21:35 UTC | May 29, 05:10 UTC | 7h 35m |
| 2026-05-28 | BAW43C | LGW → MCO | May 28, 10:40 UTC | May 28, 19:10 UTC | 8h 30m |
| 2026-05-27 | BAW2160 | ISB → LGW | May 27, 09:45 UTC | May 28, 04:00 UTC | 18h 15m |
| 2026-05-26 | BAW2067 | LGW → ACC | May 26, 13:10 UTC | May 27, 04:04 UTC | 14h 55m |
| 2026-05-26 | BAW2278 | YVR → LGW | May 26, 00:29 UTC | May 26, 08:54 UTC | 8h 25m |
| 2026-05-25 | BAW2279 | LGW → YVR | May 25, 12:40 UTC | May 25, 21:54 UTC | 9h 14m |
| 2026-05-24 | BAW2278 | YVR → LGW | May 24, 23:00 UTC | May 25, 07:55 UTC | 8h 55m |
| 2026-05-24 | BAW2279 | LGW → YVR | May 24, 11:00 UTC | May 24, 20:10 UTC | 9h 10m |
| 2026-05-23 | BAW2278 | YVR → LGW | May 23, 22:45 UTC | May 24, 07:25 UTC | 8h 40m |
| 2026-05-23 | BAW2279 | LGW → YVR | May 23, 11:30 UTC | May 23, 20:45 UTC | 9h 15m |
| 2026-05-22 | BAW2278 | YVR → LGW | May 22, 22:40 UTC | May 23, 07:35 UTC | 8h 54m |
| 2026-05-22 | BAW2279 | LGW → YVR | May 22, 11:00 UTC | May 22, 20:05 UTC | 9h 5m |
| 2026-05-21 | BAW17PA | LGW → ANU | May 21, 10:20 UTC | May 22, 04:00 UTC | 17h 40m |
| 2026-05-20 | BAW2160 | ISB → LGW | May 20, 09:50 UTC | May 21, 03:30 UTC | 17h 40m |
| 2026-05-19 | BAW63H | MCO → LGW | May 19, 21:50 UTC | May 20, 05:55 UTC | 8h 6m |
| 2026-05-19 | BAW43C | LGW → MCO | May 19, 10:15 UTC | May 19, 18:55 UTC | 8h 40m |
| 2026-05-17 | BAW2278 | YVR → LGW | May 17, 23:00 UTC | May 18, 07:40 UTC | 8h 40m |
| 2026-05-17 | BAW2279 | LGW → YVR | May 17, 11:40 UTC | May 17, 20:20 UTC | 8h 40m |
| 2026-05-16 | BAW2278 | YVR → LGW | May 16, 23:25 UTC | May 17, 08:10 UTC | 8h 45m |
| 2026-05-16 | BAW2279 | LGW → YVR | May 16, 12:11 UTC | May 16, 20:55 UTC | 8h 45m |
| 2026-05-15 | BAW12TB | TPA → LGW | May 15, 23:10 UTC | May 16, 07:01 UTC | 7h 51m |
| 2026-05-15 | BAW12J | LGW → TPA | May 15, 11:40 UTC | May 15, 20:35 UTC | 8h 54m |
| 2026-05-14 | BAW2067 | LGW → ACC | May 14, 12:20 UTC | May 15, 03:50 UTC | 15h 30m |
| 2026-05-13 | BAW2161 | LGW → ISB | May 13, 10:00 UTC | May 14, 04:10 UTC | 18h 10m |
| 2026-05-12 | BAW63H | MCO → LGW | May 12, 22:35 UTC | May 13, 06:15 UTC | 7h 40m |
| 2026-05-12 | BAW43C | LGW → MCO | May 12, 10:05 UTC | May 12, 19:15 UTC | 9h 10m |
| 2026-05-11 | BAW63H | MCO → LGW | May 11, 21:50 UTC | May 12, 05:45 UTC | 7h 55m |
| 2026-05-11 | BAW43C | LGW → MCO | May 11, 10:10 UTC | May 11, 18:55 UTC | 8h 46m |
| 2026-05-10 | BAW2156 | ANU → LGW | May 10, 10:19 UTC | May 11, 04:20 UTC | 18h 0m |
| 2026-05-09 | BAW63H | MCO → LGW | May 9, 21:34 UTC | May 10, 05:25 UTC | 7h 50m |
| 2026-05-09 | BAW43C | LGW → MCO | May 9, 10:10 UTC | May 9, 19:00 UTC | 8h 50m |
| 2026-05-08 | BAW63H | MCO → LGW | May 8, 21:50 UTC | May 9, 05:45 UTC | 7h 55m |
| 2026-05-08 | BAW43C | LGW → MCO | May 8, 10:09 UTC | May 8, 19:10 UTC | 9h 0m |
| 2026-05-07 | BAW2067 | LGW → ACC | May 7, 13:45 UTC | May 8, 05:09 UTC | 15h 25m |
| 2026-05-06 | BAW63H | MCO → LGW | May 6, 21:45 UTC | May 7, 05:35 UTC | 7h 50m |
| 2026-05-06 | BAW43C | LGW → MCO | May 6, 10:10 UTC | May 6, 19:05 UTC | 8h 54m |
| 2026-05-06 | BAW2256 | ANU → LGW | May 6, 05:35 UTC | May 6, 06:40 UTC | 1h 5m |
| 2026-05-05 | BAW2256 | ANU → LGW | May 5, 10:20 UTC | May 6, 06:40 UTC | 20h 20m |
| 2026-05-05 | BAW17PA | LGW → ANU | May 5, 09:25 UTC | May 6, 06:40 UTC | 21h 15m |
| 2026-05-04 | BAW22G | LGW → PUJ | May 4, 10:20 UTC | May 5, 04:40 UTC | 18h 21m |
| 2026-05-03 | BAW2238 | POS → LGW | May 3, 19:55 UTC | May 4, 04:05 UTC | 8h 10m |
| 2026-05-03 | BAW2239 | LGW → POS | May 3, 09:10 UTC | May 3, 17:10 UTC | 8h 0m |
| 2026-04-26 | BAW17PA | LGW → ANU | Apr 26, 10:40 UTC | Apr 27, 04:20 UTC | 17h 40m |
| 2026-04-25 | BAW22G | LGW → PUJ | Apr 25, 10:20 UTC | Apr 26, 06:05 UTC | 19h 45m |
| 2026-04-24 | BAW2161 | LGW → ISB | Apr 24, 09:50 UTC | Apr 25, 04:05 UTC | 18h 15m |
| 2026-04-23 | BAW17PA | LGW → ANU | Apr 23, 10:30 UTC | Apr 24, 03:55 UTC | 17h 24m |
| 2026-04-22 | BAW2204 | PUJ → LGW | Apr 22, 12:20 UTC | Apr 23, 06:25 UTC | 18h 5m |
| 2026-04-22 | BAW22G | LGW → PUJ | Apr 22, 11:30 UTC | Apr 23, 06:25 UTC | 18h 55m |
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 .