sensors Mode-S transponder
406D77
ICAO 24-bit transponder address · allocated to United Kingdom
Currently assigned to G-ZBKA · BOEING 787-9 Dreamliner
- Hex
- 406D77
- Octal
- 20066567
- Decimal
- 4,222,327
- Country
- GB
- Tail
- G-ZBKA
- Type
- B789
- Flights observed
- 142
- Distinct callsigns
- 20
- Country
- GB
- Last broadcast
- 8d ago
Last known position
Country allocation
The ICAO 24-bit address 406D77 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 |
|---|---|---|---|
| BAW60 | - | 14 | 2026-06-28 |
| BAW34 | - | 14 | 2026-07-05 |
| BAW168 | British Airways | 13 | 2026-06-08 |
| BAW33 | British Airways | 12 | 2026-07-04 |
| BAW15 | British Airways | 9 | 2026-06-05 |
| BAW16 | British Airways | 8 | 2026-06-06 |
| BAW271 | British Airways | 6 | 2026-06-24 |
| BAW270 | - | 6 | 2026-06-25 |
| BAW169 | British Airways | 6 | 2026-06-07 |
| BAW61 | British Airways | 4 | 2026-06-27 |
| BAW6 | British Airways | 4 | 2026-05-29 |
| BAW5 | British Airways | 4 | 2026-05-28 |
| BAW250 | British Airways | 4 | 2026-06-01 |
| BAW243 | British Airways | 4 | 2026-06-26 |
| BAW242 | - | 4 | 2026-06-27 |
| BAW132 | British Airways | 3 | 2026-04-14 |
| BAW9EW | - | 2 | 2026-06-24 |
| BAW81V | - | 2 | 2026-06-30 |
| BAW6NC | - | 2 | 2026-06-23 |
| BAW26E | - | 2 | 2026-06-30 |
Recent flights last 50
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-07-05 | BAW34 | - | Jul 5, 15:25 UTC | Jul 6, 04:20 UTC | 12h 55m |
| 2026-07-04 | BAW33 | LHR → KUL | Jul 4, 21:00 UTC | Jul 5, 09:25 UTC | 12h 25m |
| 2026-07-04 | BAW130 | - | Jul 4, 01:10 UTC | Jul 4, 08:35 UTC | 7h 25m |
| 2026-07-03 | BAW130 | - | Jul 3, 22:00 UTC | Jul 3, 22:20 UTC | 20m |
| 2026-07-03 | BAW131 | - | Jul 3, 09:30 UTC | Jul 3, 18:30 UTC | 9h 0m |
| 2026-07-02 | BAW34 | - | Jul 2, 15:20 UTC | Jul 3, 04:20 UTC | 13h 0m |
| 2026-07-01 | BAW33 | LHR → KUL | Jul 1, 21:20 UTC | Jul 2, 09:25 UTC | 12h 5m |
| 2026-06-30 | BAW81V | - | Jun 30, 20:55 UTC | Jul 1, 05:25 UTC | 8h 30m |
| 2026-06-30 | BAW26E | - | Jun 30, 08:30 UTC | Jun 30, 17:50 UTC | 9h 20m |
| 2026-06-29 | BAW34 | - | Jun 29, 15:04 UTC | Jun 30, 03:50 UTC | 12h 46m |
| 2026-06-28 | BAW33 | LHR → KUL | Jun 28, 20:54 UTC | Jun 29, 09:10 UTC | 12h 15m |
| 2026-06-28 | BAW60 | - | Jun 28, 01:29 UTC | Jun 28, 17:55 UTC | 16h 25m |
| 2026-06-27 | BAW60 | - | Jun 27, 21:50 UTC | Jun 28, 17:55 UTC | 20h 5m |
| 2026-06-27 | BAW60 | - | Jun 27, 19:49 UTC | Jun 28, 17:55 UTC | 22h 5m |
| 2026-06-27 | BAW61 | LHR → MLE | Jun 27, 19:24 UTC | Jun 28, 17:44 UTC | 22h 20m |
| 2026-06-27 | BAW242 | - | Jun 27, 04:34 UTC | Jun 27, 09:40 UTC | 5h 5m |
| 2026-06-26 | BAW243 | LHR → MEX | Jun 26, 14:44 UTC | Jun 27, 01:44 UTC | 11h 0m |
| 2026-06-25 | BAW270 | LAS → LHR | Jun 25, 00:40 UTC | Jun 25, 10:15 UTC | 9h 35m |
| 2026-06-24 | BAW271 | LHR → LAS | Jun 24, 11:50 UTC | Jun 24, 21:44 UTC | 9h 55m |
| 2026-06-24 | BAW9EW | YUL → LHR | Jun 24, 02:49 UTC | Jun 24, 08:39 UTC | 5h 50m |
| 2026-06-23 | BAW6NC | - | Jun 23, 17:30 UTC | Jun 23, 23:59 UTC | 6h 30m |
| 2026-06-21 | BAW60 | - | Jun 21, 00:14 UTC | Jun 21, 16:49 UTC | 16h 35m |
| 2026-06-20 | BAW60 | - | Jun 20, 19:49 UTC | Jun 21, 16:49 UTC | 21h 0m |
| 2026-06-20 | BAW61 | LHR → MLE | Jun 20, 17:44 UTC | Jun 21, 15:44 UTC | 22h 0m |
| 2026-06-20 | BAW118 | - | Jun 20, 04:29 UTC | Jun 20, 13:44 UTC | 9h 15m |
| 2026-06-19 | BAW119 | - | Jun 19, 17:04 UTC | Jun 20, 02:19 UTC | 9h 15m |
| 2026-06-19 | BAW242 | - | Jun 19, 04:14 UTC | Jun 19, 13:50 UTC | 9h 35m |
| 2026-06-18 | BAW243 | LHR → MEX | Jun 18, 14:50 UTC | Jun 19, 01:34 UTC | 10h 44m |
| 2026-06-18 | BAW34N | - | Jun 18, 03:20 UTC | Jun 18, 10:55 UTC | 7h 35m |
| 2026-06-17 | BAW5E | - | Jun 17, 15:10 UTC | Jun 17, 23:55 UTC | 8h 45m |
| 2026-06-16 | BAW34 | - | Jun 16, 17:49 UTC | Jun 17, 04:15 UTC | 10h 26m |
| 2026-06-16 | BAW34 | - | Jun 16, 15:20 UTC | Jun 16, 15:40 UTC | 20m |
| 2026-06-15 | BAW33 | LHR → KUL | Jun 15, 20:45 UTC | Jun 16, 09:00 UTC | 12h 15m |
| 2026-06-15 | BAW242 | - | Jun 15, 04:25 UTC | Jun 15, 14:00 UTC | 9h 35m |
| 2026-06-14 | BAW243 | LHR → MEX | Jun 14, 15:10 UTC | Jun 15, 01:45 UTC | 10h 34m |
| 2026-06-14 | BAW270 | LAS → LHR | Jun 14, 00:30 UTC | Jun 14, 09:55 UTC | 9h 25m |
| 2026-06-13 | BAW271 | LHR → LAS | Jun 13, 11:45 UTC | Jun 13, 21:35 UTC | 9h 50m |
| 2026-06-11 | BAW60 | - | Jun 11, 23:45 UTC | Jun 12, 17:20 UTC | 17h 36m |
| 2026-06-11 | BAW60 | - | Jun 11, 19:50 UTC | Jun 12, 17:20 UTC | 21h 31m |
| 2026-06-11 | BAW60 | - | Jun 11, 17:50 UTC | Jun 12, 17:20 UTC | 23h 30m |
| 2026-06-11 | BAW61 | LHR → MLE | Jun 11, 17:40 UTC | Jun 12, 15:45 UTC | 22h 5m |
| 2026-06-11 | BAW270 | LAS → LHR | Jun 11, 01:10 UTC | Jun 11, 10:35 UTC | 9h 25m |
| 2026-06-10 | BAW271 | LHR → LAS | Jun 10, 11:45 UTC | Jun 10, 21:50 UTC | 10h 5m |
| 2026-06-09 | BAW34 | LHR → KUL | Jun 9, 15:15 UTC | Jun 10, 04:15 UTC | 13h 0m |
| 2026-06-08 | BAW33 | LHR → KUL | Jun 8, 20:55 UTC | Jun 9, 09:05 UTC | 12h 10m |
| 2026-06-08 | BAW168 | PVG → LHR | Jun 8, 04:50 UTC | Jun 8, 17:25 UTC | 12h 35m |
| 2026-06-07 | BAW168 | PVG → LHR | Jun 7, 18:30 UTC | Jun 8, 17:25 UTC | 22h 55m |
| 2026-06-07 | BAW168 | PVG → LHR | Jun 7, 16:00 UTC | Jun 8, 15:45 UTC | 23h 45m |
| 2026-06-07 | BAW168 | PVG → LHR | Jun 7, 13:50 UTC | Jun 8, 13:30 UTC | 23h 40m |
| 2026-06-07 | BAW169 | LHR → PVG | Jun 7, 11:25 UTC | Jun 8, 05:15 UTC | 17h 50m |
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-ZBKA page for operator, model, and routing details .