sensors Mode-S transponder
4243FA
ICAO 24-bit transponder address · allocated to United Kingdom
Currently assigned to VQ-BWY · BOEING 747-8
- Hex
- 4243FA
- Octal
- 20441772
- Decimal
- 4,342,778
- Country
- GB
- Tail
- VQ-BWY
- Type
- B748
- Flights observed
- 94
- Distinct callsigns
- 20
- Country
- GB
- Last broadcast
- 17h ago
Last known position
Country allocation
The ICAO 24-bit address 4243FA 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 |
|---|---|---|---|
| AZG5721 | Sakaviaservice | 10 | 2026-05-26 |
| AZG5789 | Sakaviaservice | 8 | 2026-05-27 |
| AZG4862 | Sakaviaservice | 6 | 2026-04-13 |
| AZG1647 | Sakaviaservice | 5 | 2026-05-09 |
| AZG5722 | Sakaviaservice | 4 | 2026-05-26 |
| AZG997 | - | 3 | 2026-04-18 |
| AZG692 | Sakaviaservice | 3 | 2026-04-24 |
| AZG647 | Sakaviaservice | 3 | 2026-05-10 |
| AZG634 | - | 3 | 2026-04-15 |
| AZG633 | - | 3 | 2026-04-15 |
| AZG785 | Sakaviaservice | 2 | 2026-04-30 |
| AZG784 | Sakaviaservice | 2 | 2026-04-30 |
| AZG712 | Sakaviaservice | 2 | 2026-05-25 |
| AZG711 | - | 2 | 2026-05-24 |
| AZG648 | Sakaviaservice | 2 | 2026-05-11 |
| AZG3823 | - | 2 | 2026-05-28 |
| AZG3321 | Sakaviaservice | 2 | 2026-05-24 |
| AZG1648 | Sakaviaservice | 2 | 2026-05-10 |
| AZG147 | - | 2 | 2026-04-14 |
| AZG998 | Sakaviaservice | 1 | 2026-04-18 |
Recent flights last 50
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-05-29 | AZG1224 | - | May 29, 09:50 UTC | May 29, 11:35 UTC | 1h 45m |
| 2026-05-29 | AZG1223 | JFK → IST | May 29, 03:50 UTC | May 29, 06:15 UTC | 2h 25m |
| 2026-05-28 | AZG3823 | - | May 28, 11:10 UTC | May 29, 01:15 UTC | 14h 5m |
| 2026-05-28 | AZG923 | HKG → GYD | May 28, 08:45 UTC | May 28, 09:05 UTC | 20m |
| 2026-05-28 | AZG1922 | DMM → FRU | May 28, 05:25 UTC | May 28, 06:00 UTC | 35m |
| 2026-05-27 | AZG5789 | IAH → HHN | May 27, 13:55 UTC | May 28, 03:05 UTC | 13h 10m |
| 2026-05-27 | AZG5789 | IAH → HHN | May 27, 02:59 UTC | May 27, 12:10 UTC | 9h 10m |
| 2026-05-26 | AZG5722 | JFK → HHN | May 26, 21:44 UTC | May 26, 23:19 UTC | 1h 35m |
| 2026-05-26 | AZG5721 | GYD → GYD | May 26, 10:25 UTC | May 26, 19:20 UTC | 8h 55m |
| 2026-05-26 | AZG5721 | GYD → GYD | May 26, 01:40 UTC | May 26, 08:24 UTC | 6h 45m |
| 2026-05-25 | AZG712 | LGG → GYD | May 25, 17:40 UTC | May 25, 21:45 UTC | 4h 4m |
| 2026-05-24 | AZG711 | - | May 24, 21:10 UTC | May 25, 13:20 UTC | 16h 10m |
| 2026-05-24 | AZG624 | - | May 24, 13:10 UTC | May 24, 18:25 UTC | 5h 15m |
| 2026-05-24 | AZG3321 | GYD → BOM | May 24, 09:05 UTC | May 24, 09:15 UTC | 10m |
| 2026-05-24 | AZG3321 | GYD → BOM | May 24, 08:05 UTC | May 24, 08:15 UTC | 10m |
| 2026-05-19 | AZG1406 | - | May 19, 02:00 UTC | May 19, 16:30 UTC | 14h 30m |
| 2026-05-18 | AZG1405 | BUD → IST | May 18, 19:50 UTC | May 18, 23:05 UTC | 3h 15m |
| 2026-05-18 | AZG9933 | GYD → MAD | May 18, 11:40 UTC | May 18, 17:10 UTC | 5h 30m |
| 2026-05-17 | AZG3220 | - | May 17, 04:40 UTC | May 17, 05:10 UTC | 30m |
| 2026-05-16 | AZG3219 | GYD → DEL | May 16, 22:15 UTC | May 16, 23:00 UTC | 45m |
| 2026-05-15 | AZG122 | - | May 15, 08:55 UTC | May 15, 09:10 UTC | 15m |
| 2026-05-15 | AZG121 | - | May 15, 05:35 UTC | May 15, 05:50 UTC | 15m |
| 2026-05-14 | AZG3824 | - | May 14, 14:50 UTC | May 14, 18:35 UTC | 3h 45m |
| 2026-05-14 | AZG3823 | - | May 14, 01:15 UTC | May 14, 11:35 UTC | 10h 20m |
| 2026-05-13 | AZG5789 | IAH → HHN | May 13, 10:50 UTC | May 13, 22:05 UTC | 11h 15m |
| 2026-05-12 | AZG5789 | IAH → HHN | May 12, 22:25 UTC | May 13, 07:30 UTC | 9h 5m |
| 2026-05-12 | AZG5722 | JFK → HHN | May 12, 16:55 UTC | May 12, 18:30 UTC | 1h 35m |
| 2026-05-12 | AZG5721 | GYD → GYD | May 12, 05:15 UTC | May 12, 14:05 UTC | 8h 50m |
| 2026-05-12 | AZG5721 | GYD → GYD | May 12, 02:45 UTC | May 12, 03:10 UTC | 25m |
| 2026-05-11 | AZG5721 | GYD → GYD | May 11, 20:25 UTC | May 11, 22:35 UTC | 2h 9m |
| 2026-05-11 | AZG648 | HKG → HKG | May 11, 07:55 UTC | May 11, 08:15 UTC | 20m |
| 2026-05-10 | AZG647 | DMM → HKG | May 10, 15:24 UTC | May 11, 05:00 UTC | 13h 36m |
| 2026-05-10 | AZG1648 | HKG → GYD | May 10, 03:45 UTC | May 10, 04:00 UTC | 15m |
| 2026-05-09 | AZG1647 | ALA → HKG | May 9, 23:20 UTC | May 9, 23:55 UTC | 35m |
| 2026-05-09 | AZG1647 | ALA → HKG | May 9, 18:20 UTC | May 9, 21:30 UTC | 3h 10m |
| 2026-05-07 | AZG3234 | HHN → GYD | May 7, 03:30 UTC | May 7, 07:20 UTC | 3h 50m |
| 2026-05-06 | AZG3233 | - | May 6, 19:30 UTC | May 6, 23:45 UTC | 4h 15m |
| 2026-05-06 | AZG1148 | HKG → HKG | May 6, 07:25 UTC | May 6, 07:40 UTC | 15m |
| 2026-05-06 | AZG1246 | - | May 6, 03:05 UTC | May 6, 03:35 UTC | 30m |
| 2026-05-05 | AZG5789 | IAH → HHN | May 5, 11:55 UTC | May 6, 00:55 UTC | 13h 0m |
| 2026-05-05 | AZG5789 | IAH → HHN | May 5, 00:30 UTC | May 5, 10:10 UTC | 9h 40m |
| 2026-05-04 | AZG5722 | JFK → HHN | May 4, 18:25 UTC | May 4, 20:05 UTC | 1h 41m |
| 2026-05-04 | AZG5721 | GYD → GYD | May 4, 06:20 UTC | May 4, 15:10 UTC | 8h 50m |
| 2026-05-04 | AZG5721 | GYD → GYD | May 4, 03:49 UTC | May 4, 04:20 UTC | 30m |
| 2026-05-03 | AZG5721 | GYD → GYD | May 3, 11:05 UTC | May 4, 02:35 UTC | 15h 30m |
| 2026-05-03 | AZG1647 | ALA → HKG | May 3, 07:10 UTC | May 3, 07:45 UTC | 35m |
| 2026-05-02 | AZG3287 | - | May 2, 15:15 UTC | May 3, 05:05 UTC | 13h 49m |
| 2026-05-02 | AZG3237 | - | May 2, 07:50 UTC | May 2, 12:00 UTC | 4h 10m |
| 2026-05-01 | AZG1923 | HKG → HKG | May 1, 19:45 UTC | May 1, 20:05 UTC | 20m |
| 2026-05-01 | AZG691 | - | May 1, 16:00 UTC | May 1, 16:20 UTC | 20m |
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 VQ-BWY page for operator, model, and routing details .