sensors Mode-S transponder
406A34
ICAO 24-bit transponder address · allocated to United Kingdom
Currently assigned to G-STBI · BOEING 777-300ER
- Hex
- 406A34
- Octal
- 20065064
- Decimal
- 4,221,492
- Country
- GB
- Tail
- G-STBI
- Type
- B77W
- Flights observed
- 171
- Distinct callsigns
- 20
- Country
- GB
- Last broadcast
- 4h ago
Current position
Country allocation
The ICAO 24-bit address 406A34 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 |
|---|---|---|---|
| BAW283 | British Airways | 13 | 2026-07-02 |
| BAW97A | - | 12 | 2026-07-13 |
| BAW8DS | - | 11 | 2026-07-02 |
| BAW196E | - | 11 | 2026-07-14 |
| BAW15K | British Airways | 8 | 2026-06-23 |
| BAW12 | - | 8 | 2026-07-01 |
| BAW116 | - | 8 | 2026-06-24 |
| BAW11 | - | 8 | 2026-06-30 |
| BAW9SW | - | 7 | 2026-07-12 |
| BAW82P | - | 7 | 2026-07-11 |
| BAW40F | - | 7 | 2026-06-16 |
| BAW173A | British Airways | 7 | 2026-06-16 |
| BAW33K | - | 6 | 2026-07-14 |
| BAW28F | - | 6 | 2026-06-25 |
| BAW14K | - | 6 | 2026-07-15 |
| BAW6B | British Airways | 5 | 2026-07-04 |
| BAW298 | - | 5 | 2026-06-22 |
| BAW28K | British Airways | 5 | 2026-07-03 |
| BAW21B | - | 5 | 2026-06-24 |
| BAW299 | - | 4 | 2026-06-21 |
Recent flights last 50
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-07-15 | BAW14K | - | Jul 15, 02:05 UTC | Jul 15, 03:40 UTC | 1h 35m |
| 2026-07-14 | BAW33K | - | Jul 14, 16:05 UTC | Jul 14, 23:00 UTC | 6h 54m |
| 2026-07-14 | BAW196E | - | Jul 14, 02:35 UTC | Jul 14, 11:40 UTC | 9h 5m |
| 2026-07-13 | BAW97A | - | Jul 13, 14:20 UTC | Jul 13, 23:35 UTC | 9h 15m |
| 2026-07-13 | BAW14K | JFK → LHR | Jul 13, 02:15 UTC | Jul 13, 08:35 UTC | 6h 20m |
| 2026-07-12 | BAW33K | - | Jul 12, 16:45 UTC | Jul 12, 23:30 UTC | 6h 45m |
| 2026-07-12 | BAW9SW | - | Jul 12, 03:05 UTC | Jul 12, 13:10 UTC | 10h 5m |
| 2026-07-11 | BAW82P | LHR → SAN | Jul 11, 14:30 UTC | Jul 12, 01:00 UTC | 10h 30m |
| 2026-07-10 | BAW134 | - | Jul 10, 04:25 UTC | Jul 10, 13:35 UTC | 9h 10m |
| 2026-07-09 | BAW135 | - | Jul 9, 17:25 UTC | Jul 10, 01:50 UTC | 8h 25m |
| 2026-07-09 | BAW48Q | SEA → LHR | Jul 9, 03:45 UTC | Jul 9, 12:30 UTC | 8h 45m |
| 2026-07-08 | BAW49 | - | Jul 8, 16:10 UTC | Jul 9, 01:15 UTC | 9h 5m |
| 2026-07-08 | BAW196E | - | Jul 8, 03:10 UTC | Jul 8, 11:55 UTC | 8h 45m |
| 2026-07-07 | BAW97A | - | Jul 7, 14:55 UTC | Jul 8, 00:25 UTC | 9h 30m |
| 2026-07-07 | BAW29C | IAD → LHR | Jul 7, 05:20 UTC | Jul 7, 12:05 UTC | 6h 45m |
| 2026-07-06 | BAW293 | - | Jul 6, 16:30 UTC | Jul 7, 00:05 UTC | 7h 35m |
| 2026-07-06 | BAW9SW | - | Jul 6, 03:10 UTC | Jul 6, 13:05 UTC | 9h 55m |
| 2026-07-05 | BAW82P | LHR → SAN | Jul 5, 13:55 UTC | Jul 6, 00:30 UTC | 10h 35m |
| 2026-07-05 | BAW14K | JFK → LHR | Jul 5, 02:45 UTC | Jul 5, 09:00 UTC | 6h 15m |
| 2026-07-04 | BAW33K | LHR → JFK | Jul 4, 16:15 UTC | Jul 4, 23:30 UTC | 7h 15m |
| 2026-07-04 | BAW6B | SFO → LHR | Jul 4, 02:55 UTC | Jul 4, 12:45 UTC | 9h 50m |
| 2026-07-03 | BAW28K | LHR → SFO | Jul 3, 13:50 UTC | Jul 4, 00:15 UTC | 10h 25m |
| 2026-07-02 | BAW8DS | - | Jul 2, 23:20 UTC | Jul 3, 08:45 UTC | 9h 25m |
| 2026-07-02 | BAW283 | LHR → LAX | Jul 2, 10:20 UTC | Jul 2, 20:55 UTC | 10h 35m |
| 2026-07-01 | BAW12 | - | Jul 1, 15:45 UTC | Jul 2, 04:40 UTC | 12h 55m |
| 2026-06-30 | BAW11 | - | Jun 30, 19:15 UTC | Jul 1, 08:00 UTC | 12h 45m |
| 2026-06-30 | BAW14K | JFK → LHR | Jun 30, 02:40 UTC | Jun 30, 08:45 UTC | 6h 5m |
| 2026-06-29 | BAW33K | LHR → JFK | Jun 29, 16:35 UTC | Jun 29, 23:29 UTC | 6h 55m |
| 2026-06-29 | BAW196E | - | Jun 29, 02:25 UTC | Jun 29, 10:55 UTC | 8h 30m |
| 2026-06-28 | BAW97A | - | Jun 28, 14:50 UTC | Jun 29, 00:10 UTC | 9h 20m |
| 2026-06-27 | BAW12 | - | Jun 27, 15:55 UTC | Jun 28, 05:20 UTC | 13h 25m |
| 2026-06-26 | BAW11 | - | Jun 26, 19:14 UTC | Jun 27, 07:49 UTC | 12h 35m |
| 2026-06-26 | BAW9SW | - | Jun 26, 03:00 UTC | Jun 26, 12:50 UTC | 9h 50m |
| 2026-06-25 | BAW82P | LHR → SAN | Jun 25, 14:14 UTC | Jun 26, 00:55 UTC | 10h 40m |
| 2026-06-25 | BAW28F | - | Jun 25, 00:24 UTC | Jun 25, 10:20 UTC | 9h 55m |
| 2026-06-24 | BAW21B | - | Jun 24, 11:20 UTC | Jun 24, 21:54 UTC | 10h 35m |
| 2026-06-24 | BAW116 | JFK → LHR | Jun 24, 01:09 UTC | Jun 24, 07:24 UTC | 6h 15m |
| 2026-06-23 | BAW15K | LHR → JFK | Jun 23, 14:55 UTC | Jun 23, 21:59 UTC | 7h 5m |
| 2026-06-23 | BAW196E | - | Jun 23, 02:34 UTC | Jun 23, 10:59 UTC | 8h 25m |
| 2026-06-22 | BAW97A | - | Jun 22, 14:29 UTC | Jun 23, 00:04 UTC | 9h 35m |
| 2026-06-22 | BAW298 | - | Jun 22, 00:50 UTC | Jun 22, 07:49 UTC | 7h 0m |
| 2026-06-21 | BAW299 | - | Jun 21, 12:44 UTC | Jun 21, 20:45 UTC | 8h 0m |
| 2026-06-20 | BAW8DS | - | Jun 20, 23:50 UTC | Jun 21, 09:24 UTC | 9h 35m |
| 2026-06-20 | BAW283 | LHR → LAX | Jun 20, 10:09 UTC | Jun 20, 20:34 UTC | 10h 25m |
| 2026-06-19 | BAW12 | - | Jun 19, 15:44 UTC | Jun 20, 05:04 UTC | 13h 20m |
| 2026-06-18 | BAW11 | - | Jun 18, 19:00 UTC | Jun 19, 07:29 UTC | 12h 29m |
| 2026-06-18 | BAW18A | JFK → LHR | Jun 18, 03:35 UTC | Jun 18, 09:40 UTC | 6h 5m |
| 2026-06-17 | BAW37J | LHR → JFK | Jun 17, 17:00 UTC | Jun 17, 23:55 UTC | 6h 55m |
| 2026-06-16 | BAW40F | - | Jun 16, 23:05 UTC | Jun 17, 05:20 UTC | 6h 15m |
| 2026-06-16 | BAW173A | LHR → JFK | Jun 16, 11:00 UTC | Jun 16, 17:59 UTC | 7h 0m |
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-STBI page for operator, model, and routing details .