sensors Mode-S transponder
40688B
ICAO 24-bit transponder address · allocated to United Kingdom
Currently assigned to G-XLEA · AIRBUS A-380-800
- Hex
- 40688B
- Octal
- 20064213
- Decimal
- 4,221,067
- Country
- GB
- Tail
- G-XLEA
- Type
- A388
- Flights observed
- 58
- Distinct callsigns
- 15
- Country
- GB
- Last broadcast
- 7h ago
Last known position
Country allocation
The ICAO 24-bit address 40688B 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 15 distinct
| Callsign | Airline | Flights | Last seen |
|---|---|---|---|
| BAW57K | British Airways | 6 | 2026-05-28 |
| BAW54 | British Airways | 6 | 2026-05-12 |
| BAW7D | British Airways | 5 | 2026-05-27 |
| BAW5L | British Airways | 5 | 2026-05-26 |
| BAW56 | British Airways | 5 | 2026-05-29 |
| BAW4E | British Airways | 5 | 2026-05-28 |
| BAW2X | British Airways | 5 | 2026-05-27 |
| BAW213 | British Airways | 5 | 2026-05-23 |
| BAW55G | British Airways | 4 | 2026-05-11 |
| BAW212 | British Airways | 3 | 2026-05-23 |
| BAW6R | British Airways | 2 | 2026-05-24 |
| BAW5E | British Airways | 2 | 2026-05-19 |
| BAW3G | British Airways | 2 | 2026-05-24 |
| BAW34N | British Airways | 2 | 2026-05-20 |
| BAW54D | British Airways | 1 | 2026-05-18 |
Recent flights last 50
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-05-29 | BAW56 | JNB → LHR | May 29, 17:40 UTC | May 29, 18:10 UTC | 30m |
| 2026-05-28 | BAW57K | LHR → JNB | May 28, 20:55 UTC | May 29, 07:20 UTC | 10h 25m |
| 2026-05-28 | BAW4E | LAX → LHR | May 28, 04:35 UTC | May 28, 14:35 UTC | 10h 0m |
| 2026-05-27 | BAW7D | EWR → LHR | May 27, 15:15 UTC | May 28, 01:35 UTC | 10h 20m |
| 2026-05-27 | BAW2X | SFO → LHR | May 27, 00:19 UTC | May 27, 09:55 UTC | 9h 36m |
| 2026-05-26 | BAW5L | LHR → SFO | May 26, 10:44 UTC | May 26, 21:00 UTC | 10h 15m |
| 2026-05-24 | BAW6R | MIA → LHR | May 24, 21:15 UTC | May 25, 05:20 UTC | 8h 5m |
| 2026-05-24 | BAW3G | LHR → BOS | May 24, 09:30 UTC | May 24, 18:15 UTC | 8h 45m |
| 2026-05-23 | BAW212 | BOS → LHR | May 23, 23:40 UTC | May 24, 05:45 UTC | 6h 5m |
| 2026-05-23 | BAW213 | LHR → BOS | May 23, 14:35 UTC | May 23, 21:05 UTC | 6h 31m |
| 2026-05-22 | BAW56 | JNB → LHR | May 22, 17:50 UTC | May 23, 04:35 UTC | 10h 44m |
| 2026-05-21 | BAW57K | LHR → JNB | May 21, 20:50 UTC | May 22, 07:15 UTC | 10h 25m |
| 2026-05-21 | BAW4E | LAX → LHR | May 21, 04:20 UTC | May 21, 13:55 UTC | 9h 35m |
| 2026-05-20 | BAW7D | EWR → LHR | May 20, 15:00 UTC | May 21, 01:15 UTC | 10h 15m |
| 2026-05-20 | BAW34N | MIA → LHR | May 20, 03:10 UTC | May 20, 11:20 UTC | 8h 11m |
| 2026-05-19 | BAW5E | LHR → MIA | May 19, 16:05 UTC | May 20, 00:35 UTC | 8h 30m |
| 2026-05-18 | BAW54D | JNB → LHR | May 18, 08:35 UTC | May 18, 19:20 UTC | 10h 44m |
| 2026-05-16 | BAW57K | LHR → JNB | May 16, 21:20 UTC | May 17, 07:35 UTC | 10h 15m |
| 2026-05-16 | BAW4E | LAX → LHR | May 16, 04:10 UTC | May 16, 13:55 UTC | 9h 46m |
| 2026-05-15 | BAW7D | EWR → LHR | May 15, 15:05 UTC | May 16, 01:35 UTC | 10h 30m |
| 2026-05-14 | BAW2X | SFO → LHR | May 14, 23:50 UTC | May 15, 09:35 UTC | 9h 45m |
| 2026-05-14 | BAW5L | LHR → SFO | May 14, 10:20 UTC | May 14, 20:55 UTC | 10h 35m |
| 2026-05-14 | BAW212 | BOS → LHR | May 14, 00:40 UTC | May 14, 06:40 UTC | 6h 0m |
| 2026-05-13 | BAW213 | LHR → BOS | May 13, 15:25 UTC | May 13, 21:55 UTC | 6h 30m |
| 2026-05-12 | BAW54 | JNB → LHR | May 12, 19:40 UTC | May 13, 06:30 UTC | 10h 50m |
| 2026-05-11 | BAW55G | LHR → JNB | May 11, 18:35 UTC | May 12, 04:45 UTC | 10h 10m |
| 2026-05-10 | BAW2X | SFO → LHR | May 10, 23:55 UTC | May 11, 09:30 UTC | 9h 35m |
| 2026-05-10 | BAW5L | LHR → SFO | May 10, 10:15 UTC | May 10, 20:40 UTC | 10h 25m |
| 2026-05-09 | BAW56 | JNB → LHR | May 9, 17:49 UTC | May 10, 04:29 UTC | 10h 40m |
| 2026-05-08 | BAW57K | LHR → JNB | May 8, 21:15 UTC | May 9, 07:15 UTC | 10h 0m |
| 2026-05-04 | BAW54 | JNB → LHR | May 4, 19:35 UTC | May 5, 06:20 UTC | 10h 45m |
| 2026-05-03 | BAW55G | LHR → JNB | May 3, 19:00 UTC | May 4, 05:10 UTC | 10h 10m |
| 2026-05-03 | BAW4E | LAX → LHR | May 3, 04:30 UTC | May 3, 14:25 UTC | 9h 55m |
| 2026-05-02 | BAW7D | EWR → LHR | May 2, 14:40 UTC | May 3, 01:10 UTC | 10h 30m |
| 2026-05-01 | BAW56 | JNB → LHR | May 1, 17:35 UTC | May 2, 04:10 UTC | 10h 35m |
| 2026-04-30 | BAW57K | LHR → JNB | Apr 30, 20:45 UTC | May 1, 07:05 UTC | 10h 20m |
| 2026-04-30 | BAW34N | MIA → LHR | Apr 30, 04:25 UTC | Apr 30, 12:40 UTC | 8h 15m |
| 2026-04-29 | BAW5E | LHR → MIA | Apr 29, 17:25 UTC | Apr 30, 01:50 UTC | 8h 24m |
| 2026-04-29 | BAW2X | SFO → LHR | Apr 29, 00:34 UTC | Apr 29, 10:40 UTC | 10h 6m |
| 2026-04-28 | BAW5L | LHR → SFO | Apr 28, 10:40 UTC | Apr 28, 20:50 UTC | 10h 10m |
| 2026-04-27 | BAW54 | JNB → LHR | Apr 27, 20:30 UTC | Apr 28, 07:05 UTC | 10h 35m |
| 2026-04-26 | BAW55G | LHR → JNB | Apr 26, 18:25 UTC | Apr 27, 04:45 UTC | 10h 20m |
| 2026-04-26 | BAW4E | LAX → LHR | Apr 26, 04:15 UTC | Apr 26, 14:05 UTC | 9h 50m |
| 2026-04-25 | BAW7D | EWR → LHR | Apr 25, 14:55 UTC | Apr 26, 01:20 UTC | 10h 25m |
| 2026-04-24 | BAW54 | JNB → LHR | Apr 24, 19:35 UTC | Apr 25, 06:15 UTC | 10h 40m |
| 2026-04-23 | BAW55G | LHR → JNB | Apr 23, 18:25 UTC | Apr 24, 04:35 UTC | 10h 10m |
| 2026-04-23 | BAW2X | SFO → LHR | Apr 23, 00:25 UTC | Apr 23, 10:15 UTC | 9h 50m |
| 2026-04-22 | BAW5L | LHR → SFO | Apr 22, 10:15 UTC | Apr 22, 20:35 UTC | 10h 20m |
| 2026-04-21 | BAW6R | MIA → LHR | Apr 21, 21:45 UTC | Apr 22, 06:25 UTC | 8h 40m |
| 2026-04-21 | BAW3G | LHR → BOS | Apr 21, 10:15 UTC | Apr 21, 18:55 UTC | 8h 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-XLEA page for operator, model, and routing details .