sensors Mode-S transponder
406D79
ICAO 24-bit transponder address · allocated to United Kingdom
Currently assigned to G-ZBKC · BOEING 787-9 Dreamliner
- Hex
- 406D79
- Octal
- 20066571
- Decimal
- 4,222,329
- Country
- GB
- Tail
- G-ZBKC
- Type
- B789
- Flights observed
- 172
- Distinct callsigns
- 20
- Country
- GB
- Last broadcast
- Jul 24, 10:05 UTC
Last known position
Country allocation
The ICAO 24-bit address 406D79 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 |
|---|---|---|---|
| BAW271 | British Airways | 15 | 2026-06-25 |
| BAW16 | - | 13 | 2026-07-19 |
| BAW15 | British Airways | 13 | 2026-07-23 |
| BAW270 | - | 12 | 2026-06-26 |
| BAW168 | - | 11 | 2026-07-17 |
| BAW34 | - | 8 | 2026-07-07 |
| BAW33 | British Airways | 8 | 2026-07-06 |
| BAW243 | - | 7 | 2026-07-11 |
| BAW60 | - | 6 | 2026-06-30 |
| BAW242 | - | 6 | 2026-07-12 |
| BAW6 | - | 5 | 2026-06-28 |
| BAW5 | British Airways | 5 | 2026-06-27 |
| BAW169 | - | 5 | 2026-07-16 |
| BAW5CA | British Airways | 4 | 2026-04-15 |
| BAW26E | British Airways | 4 | 2026-04-13 |
| BAW171 | British Airways | 4 | 2026-04-16 |
| BAW139 | - | 4 | 2026-07-15 |
| BAW138 | - | 4 | 2026-07-15 |
| BAW9ZY | British Airways | 3 | 2026-04-14 |
| BAW99 | - | 3 | 2026-06-26 |
Recent flights last 50
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-07-23 | BAW15 | SIN → SYD | Jul 23, 21:35 UTC | Jul 24, 10:05 UTC | 12h 30m |
| 2026-07-19 | BAW16 | - | Jul 19, 15:00 UTC | Jul 20, 04:05 UTC | 13h 5m |
| 2026-07-19 | BAW16 | - | Jul 19, 04:55 UTC | Jul 19, 05:25 UTC | 30m |
| 2026-07-18 | BAW15 | - | Jul 18, 19:20 UTC | Jul 18, 19:55 UTC | 35m |
| 2026-07-17 | BAW15 | - | Jul 17, 21:25 UTC | Jul 18, 10:20 UTC | 12h 56m |
| 2026-07-17 | BAW168 | - | Jul 17, 04:54 UTC | Jul 17, 17:44 UTC | 12h 50m |
| 2026-07-16 | BAW168 | - | Jul 16, 18:34 UTC | Jul 17, 17:44 UTC | 23h 10m |
| 2026-07-16 | BAW168 | - | Jul 16, 14:20 UTC | Jul 17, 14:00 UTC | 23h 40m |
| 2026-07-16 | BAW169 | - | Jul 16, 11:45 UTC | Jul 17, 05:15 UTC | 17h 30m |
| 2026-07-15 | BAW138 | - | Jul 15, 20:40 UTC | Jul 16, 05:50 UTC | 9h 10m |
| 2026-07-15 | BAW139 | - | Jul 15, 09:15 UTC | Jul 15, 17:30 UTC | 8h 15m |
| 2026-07-14 | BAW16 | - | Jul 14, 15:05 UTC | Jul 15, 04:15 UTC | 13h 9m |
| 2026-07-14 | BAW16 | - | Jul 14, 12:35 UTC | Jul 14, 12:45 UTC | 10m |
| 2026-07-14 | BAW16 | - | Jul 14, 05:00 UTC | Jul 14, 05:35 UTC | 35m |
| 2026-07-13 | BAW15 | - | Jul 13, 19:00 UTC | Jul 13, 19:35 UTC | 35m |
| 2026-07-12 | BAW15 | - | Jul 12, 21:45 UTC | Jul 13, 10:10 UTC | 12h 25m |
| 2026-07-12 | BAW242 | - | Jul 12, 04:20 UTC | Jul 12, 14:20 UTC | 10h 0m |
| 2026-07-11 | BAW243 | - | Jul 11, 15:15 UTC | Jul 12, 02:01 UTC | 10h 45m |
| 2026-07-11 | BAW250 | - | Jul 11, 07:30 UTC | Jul 11, 08:50 UTC | 1h 20m |
| 2026-07-10 | BAW250 | - | Jul 10, 19:15 UTC | Jul 10, 19:25 UTC | 10m |
| 2026-07-09 | BAW251 | - | Jul 9, 21:20 UTC | Jul 9, 22:15 UTC | 55m |
| 2026-07-09 | BAW242 | - | Jul 9, 05:15 UTC | Jul 9, 15:10 UTC | 9h 55m |
| 2026-07-08 | BAW243 | - | Jul 8, 14:45 UTC | Jul 9, 01:50 UTC | 11h 5m |
| 2026-07-07 | BAW34 | - | Jul 7, 15:20 UTC | Jul 8, 04:05 UTC | 12h 45m |
| 2026-07-06 | BAW33 | LHR → KUL | Jul 6, 21:05 UTC | Jul 7, 09:10 UTC | 12h 5m |
| 2026-07-06 | BAW242 | - | Jul 6, 04:20 UTC | Jul 6, 14:05 UTC | 9h 45m |
| 2026-07-05 | BAW243 | LHR → MEX | Jul 5, 15:05 UTC | Jul 6, 02:00 UTC | 10h 55m |
| 2026-07-04 | BAW138 | - | Jul 4, 21:40 UTC | Jul 5, 07:10 UTC | 9h 30m |
| 2026-07-04 | BAW139 | - | Jul 4, 10:45 UTC | Jul 4, 18:55 UTC | 8h 10m |
| 2026-07-03 | BAW16 | SIN → LHR | Jul 3, 15:35 UTC | Jul 4, 05:05 UTC | 13h 30m |
| 2026-07-03 | BAW16 | SIN → LHR | Jul 3, 12:55 UTC | Jul 3, 13:05 UTC | 10m |
| 2026-07-03 | BAW16 | SIN → LHR | Jul 3, 05:05 UTC | Jul 3, 05:35 UTC | 30m |
| 2026-07-02 | BAW15 | SIN → SYD | Jul 2, 12:50 UTC | Jul 2, 19:25 UTC | 6h 35m |
| 2026-07-01 | BAW15 | SIN → SYD | Jul 1, 21:30 UTC | Jul 2, 10:10 UTC | 12h 40m |
| 2026-06-30 | BAW60 | - | Jun 30, 22:25 UTC | Jul 1, 16:40 UTC | 18h 15m |
| 2026-06-30 | BAW60 | - | Jun 30, 20:20 UTC | Jul 1, 16:40 UTC | 20h 20m |
| 2026-06-30 | BAW61 | LHR → MLE | Jun 30, 18:20 UTC | Jul 1, 16:40 UTC | 22h 20m |
| 2026-06-30 | BAW61 | LHR → MLE | Jun 30, 17:55 UTC | Jul 1, 16:15 UTC | 22h 20m |
| 2026-06-30 | BAW242 | - | Jun 30, 04:55 UTC | Jun 30, 14:40 UTC | 9h 45m |
| 2026-06-29 | BAW243 | LHR → MEX | Jun 29, 15:00 UTC | Jun 30, 02:00 UTC | 11h 1m |
| 2026-06-28 | BAW6 | HND → LHR | Jun 28, 05:29 UTC | Jun 28, 19:14 UTC | 13h 45m |
| 2026-06-27 | BAW5 | LHR → NRT | Jun 27, 14:14 UTC | Jun 28, 03:05 UTC | 12h 50m |
| 2026-06-27 | BAW98T | YYZ → LHR | Jun 27, 02:25 UTC | Jun 27, 09:15 UTC | 6h 50m |
| 2026-06-26 | BAW99 | - | Jun 26, 17:09 UTC | Jun 27, 00:05 UTC | 6h 55m |
| 2026-06-26 | BAW270 | LAS → LHR | Jun 26, 00:39 UTC | Jun 26, 10:15 UTC | 9h 35m |
| 2026-06-25 | BAW271 | LHR → LAS | Jun 25, 11:44 UTC | Jun 25, 21:40 UTC | 9h 55m |
| 2026-06-24 | BAW138 | - | Jun 24, 20:30 UTC | Jun 25, 05:50 UTC | 9h 20m |
| 2026-06-24 | BAW139 | - | Jun 24, 09:09 UTC | Jun 24, 17:45 UTC | 8h 35m |
| 2026-06-22 | BAW6 | HND → LHR | Jun 22, 04:40 UTC | Jun 22, 18:40 UTC | 14h 0m |
| 2026-06-21 | BAW5 | LHR → NRT | Jun 21, 13:50 UTC | Jun 22, 02:30 UTC | 12h 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-ZBKC page for operator, model, and routing details .