sensors Mode-S transponder
4007EF
ICAO 24-bit transponder address · allocated to United Kingdom
Currently assigned to G-YMMD · BOEING 777-200
- Hex
- 4007EF
- Octal
- 20003757
- Decimal
- 4,196,335
- Country
- GB
- Tail
- G-YMMD
- Type
- B772
- Flights observed
- 65
- Distinct callsigns
- 20
- Country
- GB
- Last broadcast
- 12h ago
Current position
Country allocation
The ICAO 24-bit address 4007EF 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 |
|---|---|---|---|
| BAW2203 | British Airways | 8 | 2026-05-29 |
| BAW2202 | British Airways | 7 | 2026-05-30 |
| BAW2064 | British Airways | 6 | 2026-05-28 |
| BAW9VA | British Airways | 5 | 2026-05-25 |
| BAW25K | British Airways | 4 | 2026-05-04 |
| BAW5KW | British Airways | 3 | 2026-05-25 |
| BAW23K | British Airways | 3 | 2026-05-04 |
| BAW2231 | British Airways | 3 | 2026-05-19 |
| BAW2230 | British Airways | 3 | 2026-05-20 |
| BAW2065 | British Airways | 3 | 2026-05-26 |
| BAW12J | British Airways | 3 | 2026-05-17 |
| BAW2204 | British Airways | 2 | 2026-05-11 |
| BAW2158 | British Airways | 2 | 2026-05-13 |
| BAW12TB | British Airways | 2 | 2026-05-18 |
| BAW9174 | - | 1 | 2026-04-14 |
| BAW9171 | - | 1 | 2026-04-18 |
| BAW63H | British Airways | 1 | 2026-04-20 |
| BAW43C | British Airways | 1 | 2026-04-20 |
| BAW39D | British Airways | 1 | 2026-05-06 |
| BAW38W | British Airways | 1 | 2026-05-07 |
Recent flights last 50
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-05-30 | BAW2202 | CUN → LGW | May 30, 01:00 UTC | May 30, 09:50 UTC | 8h 50m |
| 2026-05-29 | BAW2203 | LGW → CUN | May 29, 12:55 UTC | May 29, 22:50 UTC | 9h 55m |
| 2026-05-29 | BAW2202 | CUN → LGW | May 29, 01:20 UTC | May 29, 10:00 UTC | 8h 40m |
| 2026-05-28 | BAW2203 | LGW → CUN | May 28, 13:05 UTC | May 28, 23:05 UTC | 10h 0m |
| 2026-05-28 | BAW2064 | MRU → LGW | May 28, 00:25 UTC | May 28, 05:15 UTC | 4h 50m |
| 2026-05-26 | BAW2065 | LGW → MRU | May 26, 20:50 UTC | May 27, 00:10 UTC | 3h 20m |
| 2026-05-25 | BAW5KW | UVF → LGW | May 25, 22:15 UTC | May 26, 10:44 UTC | 12h 30m |
| 2026-05-25 | BAW9VA | LGW → UVF | May 25, 12:15 UTC | May 26, 10:44 UTC | 22h 30m |
| 2026-05-24 | BAW17PA | LGW → ANU | May 24, 10:45 UTC | May 25, 04:15 UTC | 17h 30m |
| 2026-05-23 | BAW22G | LGW → PUJ | May 23, 10:20 UTC | May 24, 05:10 UTC | 18h 50m |
| 2026-05-22 | BAW2202 | CUN → LGW | May 22, 06:15 UTC | May 22, 15:05 UTC | 8h 50m |
| 2026-05-21 | BAW2203 | LGW → CUN | May 21, 18:20 UTC | May 22, 04:10 UTC | 9h 50m |
| 2026-05-20 | BAW2230 | BKK → LGW | May 20, 16:00 UTC | May 21, 04:00 UTC | 12h 0m |
| 2026-05-19 | BAW2231 | LGW → BKK | May 19, 21:35 UTC | May 20, 08:50 UTC | 11h 16m |
| 2026-05-19 | BAW2202 | CUN → LGW | May 19, 00:50 UTC | May 19, 10:00 UTC | 9h 10m |
| 2026-05-18 | BAW2203 | LGW → CUN | May 18, 13:00 UTC | May 18, 22:40 UTC | 9h 39m |
| 2026-05-18 | BAW12TB | TPA → LGW | May 18, 01:50 UTC | May 18, 10:00 UTC | 8h 10m |
| 2026-05-17 | BAW12J | LGW → TPA | May 17, 18:15 UTC | May 17, 21:45 UTC | 3h 30m |
| 2026-05-17 | BAW12J | LGW → TPA | May 17, 12:30 UTC | May 17, 18:10 UTC | 5h 40m |
| 2026-05-17 | BAW5KW | UVF → LGW | May 17, 08:05 UTC | May 17, 09:05 UTC | 1h 0m |
| 2026-05-16 | BAW9VA | LGW → UVF | May 16, 10:40 UTC | May 17, 09:05 UTC | 22h 25m |
| 2026-05-16 | BAW2064 | MRU → LGW | May 16, 02:35 UTC | May 16, 04:40 UTC | 2h 5m |
| 2026-05-14 | BAW2065 | LGW → MRU | May 14, 20:20 UTC | May 14, 23:10 UTC | 2h 50m |
| 2026-05-14 | BAW2202 | CUN → LGW | May 14, 03:45 UTC | May 14, 12:30 UTC | 8h 45m |
| 2026-05-13 | BAW2203 | LGW → CUN | May 13, 12:45 UTC | May 13, 23:05 UTC | 10h 20m |
| 2026-05-13 | BAW2158 | GND → UVF | May 13, 06:25 UTC | May 13, 08:40 UTC | 2h 15m |
| 2026-05-12 | BAW2158 | GND → UVF | May 12, 10:30 UTC | May 13, 08:40 UTC | 22h 10m |
| 2026-05-11 | BAW2204 | PUJ → LGW | May 11, 09:50 UTC | May 12, 04:55 UTC | 19h 5m |
| 2026-05-11 | BAW2204 | PUJ → LGW | May 11, 09:20 UTC | May 12, 04:55 UTC | 19h 35m |
| 2026-05-11 | BAW2064 | MRU → LGW | May 11, 00:00 UTC | May 11, 05:05 UTC | 5h 5m |
| 2026-05-09 | BAW2065 | LGW → MRU | May 9, 20:15 UTC | May 10, 00:20 UTC | 4h 5m |
| 2026-05-08 | BAW2230 | BKK → LGW | May 8, 16:10 UTC | May 9, 04:30 UTC | 12h 20m |
| 2026-05-07 | BAW2231 | LGW → BKK | May 7, 21:50 UTC | May 8, 08:34 UTC | 10h 45m |
| 2026-05-07 | BAW38W | MCO → LGW | May 7, 01:35 UTC | May 7, 09:35 UTC | 8h 0m |
| 2026-05-06 | BAW39D | LGW → MCO | May 6, 14:05 UTC | May 6, 23:20 UTC | 9h 14m |
| 2026-05-06 | BAW2202 | CUN → LGW | May 6, 02:15 UTC | May 6, 10:20 UTC | 8h 5m |
| 2026-05-05 | BAW2203 | LGW → CUN | May 5, 13:20 UTC | May 5, 22:40 UTC | 9h 20m |
| 2026-05-04 | BAW25K | KIN → LGW | May 4, 21:15 UTC | May 5, 10:15 UTC | 13h 0m |
| 2026-05-04 | BAW23K | LGW → KIN | May 4, 13:50 UTC | May 5, 10:15 UTC | 20h 26m |
| 2026-05-04 | BAW2202 | CUN → LGW | May 4, 01:10 UTC | May 4, 09:50 UTC | 8h 40m |
| 2026-05-03 | BAW2203 | LGW → CUN | May 3, 12:50 UTC | May 3, 23:15 UTC | 10h 25m |
| 2026-04-26 | BAW2203 | LGW → CUN | Apr 26, 12:55 UTC | Apr 26, 14:35 UTC | 1h 40m |
| 2026-04-25 | BAW25K | KIN → LGW | Apr 25, 13:50 UTC | Apr 26, 08:45 UTC | 18h 55m |
| 2026-04-25 | BAW23K | LGW → KIN | Apr 25, 12:30 UTC | Apr 26, 08:45 UTC | 20h 15m |
| 2026-04-24 | BAW2230 | BKK → LGW | Apr 24, 16:00 UTC | Apr 25, 04:30 UTC | 12h 30m |
| 2026-04-23 | BAW2231 | LGW → BKK | Apr 23, 21:40 UTC | Apr 24, 08:55 UTC | 11h 15m |
| 2026-04-23 | BAW25K | KIN → LGW | Apr 23, 08:40 UTC | Apr 23, 09:50 UTC | 1h 10m |
| 2026-04-22 | BAW25K | KIN → LGW | Apr 22, 13:50 UTC | Apr 23, 09:50 UTC | 20h 0m |
| 2026-04-22 | BAW23K | LGW → KIN | Apr 22, 13:10 UTC | Apr 23, 09:50 UTC | 20h 40m |
| 2026-04-21 | BAW12TB | TPA → LGW | Apr 21, 23:20 UTC | Apr 22, 08:05 UTC | 8h 45m |
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-YMMD page for operator, model, and routing details .