sensors Mode-S transponder
406B20
ICAO 24-bit transponder address · allocated to United Kingdom
Currently assigned to G-XLEG · AIRBUS A-380-800
- Hex
- 406B20
- Octal
- 20065440
- Decimal
- 4,221,728
- Country
- GB
- Tail
- G-XLEG
- Type
- A388
- Flights observed
- 106
- Distinct callsigns
- 17
- Country
- GB
- Last broadcast
- 8d ago
Last known position
Country allocation
The ICAO 24-bit address 406B20 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 17 distinct
| Callsign | Airline | Flights | Last seen |
|---|---|---|---|
| BAW5L | British Airways | 11 | 2026-06-24 |
| BAW212 | - | 10 | 2026-06-15 |
| BAW54 | - | 9 | 2026-06-30 |
| BAW2X | - | 8 | 2026-06-24 |
| BAW213 | British Airways | 8 | 2026-06-14 |
| BAW7D | British Airways | 7 | 2026-07-03 |
| BAW5E | British Airways | 7 | 2026-05-05 |
| BAW55G | British Airways | 7 | 2026-06-29 |
| BAW4E | - | 7 | 2026-07-04 |
| BAW34N | British Airways | 7 | 2026-05-06 |
| BAW57K | British Airways | 6 | 2026-06-12 |
| BAW6R | - | 5 | 2026-07-03 |
| BAW3G | British Airways | 5 | 2026-07-02 |
| BAW56 | British Airways | 4 | 2026-06-13 |
| BAW8K | - | 2 | 2026-06-29 |
| BAW193 | - | 2 | 2026-06-28 |
| BAW9170 | British Airways | 1 | 2026-07-05 |
Recent flights last 50
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-07-05 | BAW9170 | CWL → LHR | Jul 5, 07:05 UTC | Jul 5, 21:35 UTC | 14h 30m |
| 2026-07-04 | BAW4E | - | Jul 4, 04:10 UTC | Jul 4, 13:55 UTC | 9h 45m |
| 2026-07-03 | BAW7D | EWR → LHR | Jul 3, 14:30 UTC | Jul 4, 01:10 UTC | 10h 40m |
| 2026-07-03 | BAW6R | - | Jul 3, 00:05 UTC | Jul 3, 08:05 UTC | 8h 0m |
| 2026-07-02 | BAW3G | LHR → BOS | Jul 2, 12:15 UTC | Jul 2, 21:05 UTC | 8h 50m |
| 2026-07-01 | BAW6R | - | Jul 1, 22:00 UTC | Jul 2, 06:00 UTC | 8h 0m |
| 2026-07-01 | BAW3G | LHR → BOS | Jul 1, 09:30 UTC | Jul 1, 18:20 UTC | 8h 50m |
| 2026-06-30 | BAW54 | - | Jun 30, 19:30 UTC | Jul 1, 06:05 UTC | 10h 35m |
| 2026-06-29 | BAW55G | LHR → JNB | Jun 29, 18:25 UTC | Jun 30, 04:50 UTC | 10h 26m |
| 2026-06-29 | BAW8K | DFW → LHR | Jun 29, 01:34 UTC | Jun 29, 10:04 UTC | 8h 30m |
| 2026-06-28 | BAW193 | - | Jun 28, 12:50 UTC | Jun 28, 21:59 UTC | 9h 10m |
| 2026-06-26 | BAW4E | - | Jun 26, 04:24 UTC | Jun 26, 14:19 UTC | 9h 55m |
| 2026-06-25 | BAW7D | EWR → LHR | Jun 25, 14:39 UTC | Jun 26, 01:05 UTC | 10h 25m |
| 2026-06-24 | BAW2X | - | Jun 24, 23:54 UTC | Jun 25, 09:45 UTC | 9h 50m |
| 2026-06-24 | BAW5L | LHR → SFO | Jun 24, 10:35 UTC | Jun 24, 20:44 UTC | 10h 10m |
| 2026-06-23 | BAW54 | - | Jun 23, 19:29 UTC | Jun 24, 06:04 UTC | 10h 35m |
| 2026-06-22 | BAW55G | LHR → JNB | Jun 22, 18:40 UTC | Jun 23, 05:15 UTC | 10h 35m |
| 2026-06-22 | BAW8K | DFW → LHR | Jun 22, 01:10 UTC | Jun 22, 09:40 UTC | 8h 30m |
| 2026-06-21 | BAW193 | - | Jun 21, 12:35 UTC | Jun 21, 21:54 UTC | 9h 20m |
| 2026-06-20 | BAW54 | - | Jun 20, 19:34 UTC | Jun 21, 06:14 UTC | 10h 40m |
| 2026-06-19 | BAW55G | LHR → JNB | Jun 19, 18:34 UTC | Jun 20, 04:49 UTC | 10h 15m |
| 2026-06-19 | BAW4E | - | Jun 19, 04:14 UTC | Jun 19, 14:04 UTC | 9h 50m |
| 2026-06-18 | BAW7D | EWR → LHR | Jun 18, 14:40 UTC | Jun 19, 01:04 UTC | 10h 24m |
| 2026-06-15 | BAW212 | BOS → LHR | Jun 15, 00:15 UTC | Jun 15, 05:55 UTC | 5h 40m |
| 2026-06-14 | BAW213 | LHR → BOS | Jun 14, 15:05 UTC | Jun 14, 21:20 UTC | 6h 15m |
| 2026-06-13 | BAW56 | JNB → LHR | Jun 13, 17:45 UTC | Jun 14, 04:05 UTC | 10h 20m |
| 2026-06-12 | BAW57K | LHR → JNB | Jun 12, 20:50 UTC | Jun 13, 07:00 UTC | 10h 9m |
| 2026-06-11 | BAW6R | - | Jun 11, 21:50 UTC | Jun 12, 05:45 UTC | 7h 56m |
| 2026-06-11 | BAW3G | LHR → BOS | Jun 11, 10:15 UTC | Jun 11, 19:10 UTC | 8h 55m |
| 2026-06-04 | BAW6R | MIA → LHR | Jun 4, 21:30 UTC | Jun 5, 05:20 UTC | 7h 50m |
| 2026-06-04 | BAW3G | LHR → BOS | Jun 4, 09:30 UTC | Jun 4, 18:25 UTC | 8h 55m |
| 2026-06-03 | BAW54 | JNB → LHR | Jun 3, 19:25 UTC | Jun 4, 06:20 UTC | 10h 55m |
| 2026-06-02 | BAW57K | LHR → JNB | Jun 2, 21:40 UTC | Jun 3, 07:25 UTC | 9h 45m |
| 2026-06-01 | BAW4E | LAX → LHR | Jun 1, 04:20 UTC | Jun 1, 14:20 UTC | 10h 0m |
| 2026-05-31 | BAW7D | EWR → LHR | May 31, 14:50 UTC | Jun 1, 01:05 UTC | 10h 15m |
| 2026-05-30 | BAW54 | JNB → LHR | May 30, 19:35 UTC | May 30, 20:00 UTC | 25m |
| 2026-05-29 | BAW55G | LHR → JNB | May 29, 18:35 UTC | May 30, 04:40 UTC | 10h 5m |
| 2026-05-28 | BAW2X | SFO → LHR | May 28, 23:55 UTC | May 29, 10:00 UTC | 10h 5m |
| 2026-05-28 | BAW5L | LHR → SFO | May 28, 10:25 UTC | May 28, 20:35 UTC | 10h 10m |
| 2026-05-27 | BAW54 | JNB → LHR | May 27, 19:40 UTC | May 28, 06:15 UTC | 10h 35m |
| 2026-05-26 | BAW57K | LHR → JNB | May 26, 21:00 UTC | May 27, 07:15 UTC | 10h 16m |
| 2026-05-26 | BAW4E | LAX → LHR | May 26, 04:54 UTC | May 26, 14:35 UTC | 9h 40m |
| 2026-05-25 | BAW7D | EWR → LHR | May 25, 15:35 UTC | May 26, 02:10 UTC | 10h 35m |
| 2026-05-24 | BAW4E | LAX → LHR | May 24, 04:25 UTC | May 24, 14:25 UTC | 10h 0m |
| 2026-05-23 | BAW7D | EWR → LHR | May 23, 15:15 UTC | May 24, 01:40 UTC | 10h 26m |
| 2026-05-22 | BAW2X | SFO → LHR | May 22, 23:55 UTC | May 23, 09:40 UTC | 9h 44m |
| 2026-05-22 | BAW5L | LHR → SFO | May 22, 10:20 UTC | May 22, 20:25 UTC | 10h 5m |
| 2026-05-22 | BAW212 | BOS → LHR | May 22, 00:30 UTC | May 22, 06:15 UTC | 5h 45m |
| 2026-05-21 | BAW213 | LHR → BOS | May 21, 14:10 UTC | May 21, 20:45 UTC | 6h 35m |
| 2026-05-21 | BAW2X | SFO → LHR | May 21, 00:20 UTC | May 21, 10:00 UTC | 9h 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-XLEG page for operator, model, and routing details .