sensors Mode-S transponder
407994
ICAO 24-bit transponder address · allocated to United Kingdom
Currently assigned to G-STBO · BOEING 777-300ER
- Hex
- 407994
- Octal
- 20074624
- Decimal
- 4,225,428
- Country
- GB
- Tail
- G-STBO
- Type
- B77W
- Flights observed
- 100
- Distinct callsigns
- 20
- Country
- GB
- Last broadcast
- 8d ago
Last known position
Country allocation
The ICAO 24-bit address 407994 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 |
|---|---|---|---|
| BAW8DS | British Airways | 14 | 2026-05-15 |
| BAW283 | British Airways | 10 | 2026-05-15 |
| BAW11 | British Airways | 9 | 2026-05-13 |
| BAW12 | British Airways | 8 | 2026-05-14 |
| BAW9SW | British Airways | 6 | 2026-05-13 |
| BAW82P | British Airways | 6 | 2026-05-12 |
| BAW04A | British Airways | 5 | 2026-05-05 |
| BAW6B | British Airways | 4 | 2026-05-17 |
| BAW28K | British Airways | 4 | 2026-05-16 |
| BAW180 | British Airways | 4 | 2026-05-05 |
| BAW40F | British Airways | 3 | 2026-05-21 |
| BAW173A | British Airways | 3 | 2026-05-20 |
| BAW15K | British Airways | 3 | 2026-05-18 |
| BAW14K | British Airways | 3 | 2026-05-10 |
| BAW116 | British Airways | 3 | 2026-05-19 |
| BAW97A | British Airways | 2 | 2026-05-06 |
| BAW33K | British Airways | 2 | 2026-05-09 |
| BAW196E | British Airways | 2 | 2026-05-07 |
| BAW9174 | British Airways | 1 | 2026-05-21 |
| BAW2PD | British Airways | 1 | 2026-04-28 |
Recent flights last 50
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-05-21 | BAW9174 | EWR → LHR | May 21, 12:00 UTC | May 21, 12:30 UTC | 30m |
| 2026-05-21 | BAW40F | JFK → LHR | May 21, 01:25 UTC | May 21, 07:40 UTC | 6h 15m |
| 2026-05-20 | BAW173A | LHR → JFK | May 20, 11:00 UTC | May 20, 18:05 UTC | 7h 5m |
| 2026-05-20 | BAW40F | JFK → LHR | May 20, 00:55 UTC | May 20, 07:20 UTC | 6h 26m |
| 2026-05-19 | BAW173A | LHR → JFK | May 19, 11:15 UTC | May 19, 18:10 UTC | 6h 55m |
| 2026-05-19 | BAW116 | JFK → LHR | May 19, 01:45 UTC | May 19, 08:20 UTC | 6h 35m |
| 2026-05-18 | BAW15K | LHR → JFK | May 18, 15:10 UTC | May 18, 21:55 UTC | 6h 44m |
| 2026-05-18 | BAW29C | IAD → LHR | May 18, 03:05 UTC | May 18, 09:45 UTC | 6h 40m |
| 2026-05-17 | BAW293 | LHR → IAD | May 17, 17:01 UTC | May 18, 00:20 UTC | 7h 20m |
| 2026-05-17 | BAW6B | SFO → LHR | May 17, 02:45 UTC | May 17, 12:10 UTC | 9h 25m |
| 2026-05-16 | BAW28K | LHR → SFO | May 16, 14:25 UTC | May 17, 00:15 UTC | 9h 50m |
| 2026-05-15 | BAW8DS | LAX → LHR | May 15, 23:05 UTC | May 16, 08:55 UTC | 9h 51m |
| 2026-05-15 | BAW283 | LHR → LAX | May 15, 09:50 UTC | May 15, 20:25 UTC | 10h 34m |
| 2026-05-14 | BAW12 | SIN → LHR | May 14, 15:55 UTC | May 15, 05:20 UTC | 13h 25m |
| 2026-05-13 | BAW11 | LHR → SIN | May 13, 20:15 UTC | May 14, 08:15 UTC | 12h 0m |
| 2026-05-13 | BAW9SW | SAN → LHR | May 13, 03:00 UTC | May 13, 13:00 UTC | 10h 0m |
| 2026-05-12 | BAW82P | LHR → SAN | May 12, 14:00 UTC | May 13, 00:50 UTC | 10h 50m |
| 2026-05-12 | BAW8DS | LAX → LHR | May 12, 08:05 UTC | May 12, 09:15 UTC | 1h 10m |
| 2026-05-11 | BAW283 | LHR → LAX | May 11, 10:15 UTC | May 11, 21:10 UTC | 10h 55m |
| 2026-05-10 | BAW14K | JFK → LHR | May 10, 02:10 UTC | May 10, 08:35 UTC | 6h 25m |
| 2026-05-09 | BAW33K | LHR → JFK | May 9, 16:05 UTC | May 9, 23:09 UTC | 7h 5m |
| 2026-05-09 | BAW6B | SFO → LHR | May 9, 03:15 UTC | May 9, 12:50 UTC | 9h 35m |
| 2026-05-08 | BAW28K | LHR → SFO | May 8, 14:25 UTC | May 9, 00:50 UTC | 10h 25m |
| 2026-05-08 | BAW116 | JFK → LHR | May 8, 01:04 UTC | May 8, 06:59 UTC | 5h 55m |
| 2026-05-07 | BAW15K | LHR → JFK | May 7, 14:55 UTC | May 7, 22:20 UTC | 7h 25m |
| 2026-05-07 | BAW196E | IAH → LHR | May 7, 03:10 UTC | May 7, 11:15 UTC | 8h 5m |
| 2026-05-06 | BAW97A | LHR → IAH | May 6, 14:10 UTC | May 7, 00:45 UTC | 10h 34m |
| 2026-05-05 | BAW180 | EWR → LHR | May 5, 23:40 UTC | May 6, 06:05 UTC | 6h 24m |
| 2026-05-05 | BAW04A | JFK → LHR | May 5, 18:25 UTC | May 5, 20:10 UTC | 1h 45m |
| 2026-05-05 | BAW04A | JFK → LHR | May 5, 12:50 UTC | May 5, 18:20 UTC | 5h 30m |
| 2026-05-04 | BAW12 | SIN → LHR | May 4, 16:10 UTC | May 5, 05:35 UTC | 13h 26m |
| 2026-05-03 | BAW11 | LHR → SIN | May 3, 19:30 UTC | May 4, 07:55 UTC | 12h 25m |
| 2026-05-03 | BAW6B | SFO → LHR | May 3, 04:10 UTC | May 3, 13:45 UTC | 9h 35m |
| 2026-05-02 | BAW28K | LHR → SFO | May 2, 15:00 UTC | May 3, 01:50 UTC | 10h 50m |
| 2026-05-01 | BAW180 | EWR → LHR | May 1, 23:35 UTC | May 2, 06:05 UTC | 6h 30m |
| 2026-05-01 | BAW04A | JFK → LHR | May 1, 12:55 UTC | May 1, 19:45 UTC | 6h 50m |
| 2026-05-01 | BAW14K | JFK → LHR | May 1, 07:25 UTC | May 1, 08:55 UTC | 1h 30m |
| 2026-05-01 | BAW14K | JFK → LHR | May 1, 02:15 UTC | May 1, 03:35 UTC | 1h 20m |
| 2026-04-30 | BAW33K | LHR → JFK | Apr 30, 16:30 UTC | Apr 30, 23:15 UTC | 6h 45m |
| 2026-04-30 | BAW6B | SFO → LHR | Apr 30, 03:00 UTC | Apr 30, 12:55 UTC | 9h 55m |
| 2026-04-29 | BAW28K | LHR → SFO | Apr 29, 13:40 UTC | Apr 29, 23:50 UTC | 10h 9m |
| 2026-04-28 | BAW20R | ORD → LHR | Apr 28, 22:45 UTC | Apr 29, 06:00 UTC | 7h 15m |
| 2026-04-28 | BAW2PD | LHR → ORD | Apr 28, 10:50 UTC | Apr 28, 18:50 UTC | 8h 0m |
| 2026-04-27 | BAW198 | BOM → LHR | Apr 27, 12:10 UTC | Apr 27, 17:20 UTC | 5h 10m |
| 2026-04-26 | BAW199 | LHR → BOM | Apr 26, 20:20 UTC | Apr 27, 03:50 UTC | 7h 30m |
| 2026-04-26 | BAW264 | IAD → LHR | Apr 26, 00:35 UTC | Apr 26, 10:15 UTC | 9h 40m |
| 2026-04-25 | BAW265 | LHR → SAN | Apr 25, 11:55 UTC | Apr 25, 22:15 UTC | 10h 20m |
| 2026-04-25 | BAW116 | JFK → LHR | Apr 25, 00:55 UTC | Apr 25, 07:55 UTC | 7h 0m |
| 2026-04-24 | BAW15K | LHR → JFK | Apr 24, 14:50 UTC | Apr 24, 21:10 UTC | 6h 20m |
| 2026-04-24 | BAW196E | IAH → LHR | Apr 24, 02:25 UTC | Apr 24, 11:30 UTC | 9h 5m |
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-STBO page for operator, model, and routing details .