sensors Mode-S transponder
40749A
ICAO 24-bit transponder address · allocated to United Kingdom
Currently assigned to G-ZBKS · BOEING 787-9 Dreamliner
- Hex
- 40749A
- Octal
- 20072232
- Decimal
- 4,224,154
- Country
- GB
- Tail
- G-ZBKS
- Type
- B789
- Flights observed
- 56
- Distinct callsigns
- 14
- Country
- GB
- Last broadcast
- 22d ago
Last known position
Country allocation
The ICAO 24-bit address 40749A 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 14 distinct
| Callsign | Airline | Flights | Last seen |
|---|---|---|---|
| BAW60 | British Airways | 9 | 2026-04-17 |
| BAW243 | British Airways | 8 | 2026-05-03 |
| BAW242 | British Airways | 7 | 2026-05-04 |
| BAW34 | British Airways | 6 | 2026-05-05 |
| BAW61 | British Airways | 5 | 2026-04-16 |
| BAW33 | British Airways | 5 | 2026-05-05 |
| BAW16 | British Airways | 4 | 2026-04-25 |
| BAW36 | British Airways | 3 | 2026-04-28 |
| BAW6 | British Airways | 2 | 2026-04-27 |
| BAW5 | British Airways | 2 | 2026-04-26 |
| BAW15 | British Airways | 2 | 2026-04-24 |
| BAW9172 | British Airways | 1 | 2026-05-07 |
| BAW51B | British Airways | 1 | 2026-05-07 |
| BAW50G | British Airways | 1 | 2026-05-06 |
Recent flights last 50
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-05-07 | BAW9172 | CWL → KEF | May 7, 11:25 UTC | May 7, 12:00 UTC | 35m |
| 2026-05-07 | BAW51B | BOS → LHR | May 7, 02:15 UTC | May 7, 08:15 UTC | 6h 0m |
| 2026-05-06 | BAW50G | LHR → BOS | May 6, 17:25 UTC | May 7, 00:10 UTC | 6h 44m |
| 2026-05-05 | BAW34 | LHR → KUL | May 5, 17:55 UTC | May 6, 04:15 UTC | 10h 20m |
| 2026-05-05 | BAW34 | LHR → KUL | May 5, 15:15 UTC | May 5, 15:35 UTC | 20m |
| 2026-05-05 | BAW33 | LHR → KUL | May 5, 08:30 UTC | May 5, 08:55 UTC | 25m |
| 2026-05-04 | BAW33 | LHR → KUL | May 4, 20:50 UTC | May 5, 06:05 UTC | 9h 15m |
| 2026-05-04 | BAW242 | MEX → LHR | May 4, 04:39 UTC | May 4, 14:20 UTC | 9h 40m |
| 2026-05-03 | BAW243 | LHR → MEX | May 3, 14:30 UTC | May 4, 01:35 UTC | 11h 5m |
| 2026-04-30 | BAW34 | LHR → KUL | Apr 30, 17:55 UTC | May 1, 04:25 UTC | 10h 30m |
| 2026-04-30 | BAW34 | LHR → KUL | Apr 30, 15:15 UTC | Apr 30, 15:30 UTC | 15m |
| 2026-04-29 | BAW33 | LHR → KUL | Apr 29, 20:55 UTC | Apr 30, 08:50 UTC | 11h 54m |
| 2026-04-28 | BAW36 | MAA → LHR | Apr 28, 16:35 UTC | Apr 29, 12:10 UTC | 19h 35m |
| 2026-04-28 | BAW36 | MAA → LHR | Apr 28, 14:35 UTC | Apr 29, 12:10 UTC | 21h 36m |
| 2026-04-28 | BAW36 | MAA → LHR | Apr 28, 14:20 UTC | Apr 29, 12:10 UTC | 21h 50m |
| 2026-04-27 | BAW6 | HND → LHR | Apr 27, 04:20 UTC | Apr 27, 18:20 UTC | 14h 0m |
| 2026-04-26 | BAW5 | LHR → NRT | Apr 26, 12:35 UTC | Apr 27, 01:55 UTC | 13h 20m |
| 2026-04-25 | BAW16 | SIN → LHR | Apr 25, 17:55 UTC | Apr 26, 04:40 UTC | 10h 45m |
| 2026-04-25 | BAW16 | SIN → LHR | Apr 25, 15:20 UTC | Apr 25, 15:45 UTC | 25m |
| 2026-04-25 | BAW16 | SIN → LHR | Apr 25, 12:35 UTC | Apr 25, 12:50 UTC | 15m |
| 2026-04-25 | BAW16 | SIN → LHR | Apr 25, 04:55 UTC | Apr 25, 05:25 UTC | 30m |
| 2026-04-24 | BAW15 | LHR → SIN | Apr 24, 13:40 UTC | Apr 24, 19:35 UTC | 5h 55m |
| 2026-04-23 | BAW15 | LHR → SIN | Apr 23, 21:25 UTC | Apr 24, 10:00 UTC | 12h 35m |
| 2026-04-23 | BAW242 | MEX → LHR | Apr 23, 04:30 UTC | Apr 23, 14:40 UTC | 10h 10m |
| 2026-04-22 | BAW243 | LHR → MEX | Apr 22, 14:30 UTC | Apr 23, 00:55 UTC | 10h 25m |
| 2026-04-21 | BAW6 | HND → LHR | Apr 21, 04:30 UTC | Apr 21, 18:20 UTC | 13h 50m |
| 2026-04-20 | BAW5 | LHR → NRT | Apr 20, 12:30 UTC | Apr 21, 01:35 UTC | 13h 5m |
| 2026-04-19 | BAW34 | LHR → KUL | Apr 19, 17:50 UTC | Apr 20, 04:25 UTC | 10h 35m |
| 2026-04-19 | BAW34 | LHR → KUL | Apr 19, 15:20 UTC | Apr 19, 15:35 UTC | 15m |
| 2026-04-19 | BAW33 | LHR → KUL | Apr 19, 08:55 UTC | Apr 19, 09:10 UTC | 15m |
| 2026-04-18 | BAW33 | LHR → KUL | Apr 18, 20:55 UTC | Apr 19, 04:50 UTC | 7h 55m |
| 2026-04-17 | BAW60 | MLE → LHR | Apr 17, 17:25 UTC | Apr 17, 17:40 UTC | 15m |
| 2026-04-17 | BAW60 | MLE → LHR | Apr 17, 15:20 UTC | Apr 17, 17:15 UTC | 1h 55m |
| 2026-04-17 | BAW60 | MLE → LHR | Apr 17, 13:20 UTC | Apr 17, 15:15 UTC | 1h 54m |
| 2026-04-17 | BAW60 | MLE → LHR | Apr 17, 13:00 UTC | Apr 17, 13:15 UTC | 15m |
| 2026-04-17 | BAW60 | MLE → LHR | Apr 17, 10:05 UTC | Apr 17, 10:35 UTC | 30m |
| 2026-04-16 | BAW61 | LHR → MLE | Apr 16, 23:50 UTC | Apr 17, 00:25 UTC | 35m |
| 2026-04-16 | BAW61 | LHR → MLE | Apr 16, 19:15 UTC | Apr 16, 21:00 UTC | 1h 45m |
| 2026-04-16 | BAW61 | LHR → MLE | Apr 16, 17:40 UTC | Apr 16, 19:10 UTC | 1h 30m |
| 2026-04-15 | BAW242 | MEX → LHR | Apr 15, 13:01 UTC | Apr 15, 14:15 UTC | 1h 15m |
| 2026-04-15 | BAW242 | MEX → LHR | Apr 15, 09:00 UTC | Apr 15, 09:35 UTC | 35m |
| 2026-04-15 | BAW242 | MEX → LHR | Apr 15, 07:01 UTC | Apr 15, 08:55 UTC | 1h 55m |
| 2026-04-15 | BAW242 | MEX → LHR | Apr 15, 05:00 UTC | Apr 15, 06:55 UTC | 1h 55m |
| 2026-04-15 | BAW242 | MEX → LHR | Apr 15, 04:25 UTC | Apr 15, 04:40 UTC | 15m |
| 2026-04-15 | BAW243 | LHR → MEX | Apr 15, 01:05 UTC | Apr 15, 01:40 UTC | 35m |
| 2026-04-14 | BAW243 | LHR → MEX | Apr 14, 22:55 UTC | Apr 15, 00:40 UTC | 1h 45m |
| 2026-04-14 | BAW243 | LHR → MEX | Apr 14, 20:55 UTC | Apr 14, 22:50 UTC | 1h 55m |
| 2026-04-14 | BAW243 | LHR → MEX | Apr 14, 19:45 UTC | Apr 14, 20:50 UTC | 1h 5m |
| 2026-04-14 | BAW243 | LHR → MEX | Apr 14, 14:50 UTC | Apr 14, 15:50 UTC | 1h 0m |
| 2026-04-14 | BAW243 | LHR → MEX | Apr 14, 14:30 UTC | Apr 14, 14:45 UTC | 15m |
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-ZBKS page for operator, model, and routing details .