sensors Mode-S transponder
71C228
ICAO 24-bit transponder address · allocated to Korea, South
Currently assigned to HL8228 · AIRBUS A-330-200
- Hex
- 71C228
- Octal
- 34341050
- Decimal
- 7,455,272
- Country
- KR
- Tail
- HL8228
- Type
- A332
- Flights observed
- 93
- Distinct callsigns
- 8
- Country
- KR
- Last broadcast
- 1d ago
Last known position
Country allocation
The ICAO 24-bit address 71C228 falls within the block assigned to Korea, South (KR) by ICAO Annex 10, Volume III. Every aircraft registered in Korea, South 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 8 distinct
| Callsign | Airline | Flights | Last seen |
|---|---|---|---|
| TWB406 | - | 31 | 2026-07-06 |
| TWB405 | - | 28 | 2026-07-05 |
| TWB403 | - | 10 | 2026-07-12 |
| TWB404 | - | 9 | 2026-07-13 |
| TWB407 | Tway Airlines | 5 | 2026-05-11 |
| TWB408 | Tway Airlines | 4 | 2026-05-11 |
| TWB402 | Tway Airlines | 3 | 2026-05-24 |
| TWB401 | Tway Airlines | 3 | 2026-05-23 |
Recent flights last 50
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-07-13 | TWB404 | - | Jul 13, 04:10 UTC | Jul 13, 04:30 UTC | 20m |
| 2026-07-12 | TWB404 | - | Jul 12, 17:20 UTC | Jul 12, 19:40 UTC | 2h 20m |
| 2026-07-12 | TWB403 | - | Jul 12, 02:55 UTC | Jul 12, 14:50 UTC | 11h 55m |
| 2026-07-12 | TWB403 | - | Jul 12, 01:45 UTC | Jul 12, 02:05 UTC | 20m |
| 2026-07-06 | TWB406 | - | Jul 6, 06:15 UTC | Jul 6, 06:35 UTC | 20m |
| 2026-07-05 | TWB406 | - | Jul 5, 19:45 UTC | Jul 6, 05:25 UTC | 9h 40m |
| 2026-07-05 | TWB405 | ICN → FCO | Jul 5, 04:05 UTC | Jul 5, 16:55 UTC | 12h 50m |
| 2026-07-04 | TWB406 | - | Jul 4, 06:20 UTC | Jul 4, 06:45 UTC | 25m |
| 2026-07-03 | TWB406 | - | Jul 3, 19:45 UTC | Jul 4, 05:30 UTC | 9h 45m |
| 2026-07-03 | TWB405 | - | Jul 3, 05:25 UTC | Jul 3, 16:50 UTC | 11h 25m |
| 2026-07-03 | TWB405 | - | Jul 3, 04:15 UTC | Jul 3, 04:30 UTC | 15m |
| 2026-06-27 | TWB406 | - | Jun 27, 06:15 UTC | Jun 27, 06:40 UTC | 25m |
| 2026-06-26 | TWB406 | - | Jun 26, 19:45 UTC | Jun 27, 05:25 UTC | 9h 40m |
| 2026-06-26 | TWB405 | - | Jun 26, 05:35 UTC | Jun 26, 17:19 UTC | 11h 45m |
| 2026-06-26 | TWB405 | - | Jun 26, 04:24 UTC | Jun 26, 04:39 UTC | 15m |
| 2026-06-23 | TWB406 | - | Jun 23, 06:19 UTC | Jun 23, 06:44 UTC | 25m |
| 2026-06-22 | TWB406 | - | Jun 22, 19:54 UTC | Jun 23, 05:29 UTC | 9h 35m |
| 2026-06-22 | TWB405 | ICN → FCO | Jun 22, 03:54 UTC | Jun 22, 17:00 UTC | 13h 5m |
| 2026-06-20 | TWB406 | - | Jun 20, 06:05 UTC | Jun 20, 06:24 UTC | 20m |
| 2026-06-19 | TWB406 | - | Jun 19, 19:34 UTC | Jun 20, 05:14 UTC | 9h 40m |
| 2026-06-19 | TWB405 | - | Jun 19, 09:19 UTC | Jun 19, 16:44 UTC | 7h 25m |
| 2026-06-19 | TWB405 | - | Jun 19, 03:55 UTC | Jun 19, 04:10 UTC | 15m |
| 2026-06-15 | TWB406 | - | Jun 15, 06:15 UTC | Jun 15, 06:40 UTC | 25m |
| 2026-06-14 | TWB406 | - | Jun 14, 19:40 UTC | Jun 14, 23:10 UTC | 3h 30m |
| 2026-06-14 | TWB405 | - | Jun 14, 04:00 UTC | Jun 14, 14:05 UTC | 10h 5m |
| 2026-06-13 | TWB406 | - | Jun 13, 06:30 UTC | Jun 13, 06:50 UTC | 20m |
| 2026-06-12 | TWB406 | - | Jun 12, 19:55 UTC | Jun 13, 05:35 UTC | 9h 39m |
| 2026-06-12 | TWB405 | - | Jun 12, 06:05 UTC | Jun 12, 17:45 UTC | 11h 40m |
| 2026-06-12 | TWB405 | - | Jun 12, 04:45 UTC | Jun 12, 05:05 UTC | 20m |
| 2026-06-11 | TWB406 | FCO → ICN | Jun 11, 06:25 UTC | Jun 11, 07:00 UTC | 35m |
| 2026-06-10 | TWB406 | FCO → ICN | Jun 10, 19:45 UTC | Jun 11, 05:30 UTC | 9h 45m |
| 2026-06-10 | TWB405 | ICN → FCO | Jun 10, 05:35 UTC | Jun 10, 17:20 UTC | 11h 45m |
| 2026-06-10 | TWB405 | ICN → FCO | Jun 10, 04:15 UTC | Jun 10, 04:30 UTC | 15m |
| 2026-06-02 | TWB404 | FRA → ICN | Jun 2, 03:45 UTC | Jun 2, 04:10 UTC | 25m |
| 2026-06-01 | TWB404 | FRA → ICN | Jun 1, 17:10 UTC | Jun 1, 20:55 UTC | 3h 45m |
| 2026-06-01 | TWB403 | ICN → FRA | Jun 1, 07:05 UTC | Jun 1, 15:05 UTC | 8h 0m |
| 2026-06-01 | TWB403 | ICN → FRA | Jun 1, 01:30 UTC | Jun 1, 01:45 UTC | 15m |
| 2026-05-30 | TWB406 | FCO → ICN | May 30, 06:05 UTC | May 30, 06:25 UTC | 20m |
| 2026-05-29 | TWB406 | FCO → ICN | May 29, 19:35 UTC | May 30, 05:20 UTC | 9h 45m |
| 2026-05-29 | TWB405 | ICN → FCO | May 29, 05:20 UTC | May 29, 17:15 UTC | 11h 55m |
| 2026-05-29 | TWB405 | ICN → FCO | May 29, 04:00 UTC | May 29, 04:15 UTC | 15m |
| 2026-05-28 | TWB406 | FCO → ICN | May 28, 06:00 UTC | May 28, 06:30 UTC | 30m |
| 2026-05-27 | TWB406 | FCO → ICN | May 27, 19:40 UTC | May 28, 05:20 UTC | 9h 40m |
| 2026-05-27 | TWB405 | ICN → FCO | May 27, 05:40 UTC | May 27, 17:20 UTC | 11h 40m |
| 2026-05-27 | TWB405 | ICN → FCO | May 27, 04:19 UTC | May 27, 04:39 UTC | 20m |
| 2026-05-26 | TWB406 | FCO → ICN | May 26, 06:54 UTC | May 26, 07:05 UTC | 10m |
| 2026-05-26 | TWB406 | FCO → ICN | May 26, 06:34 UTC | May 26, 06:49 UTC | 15m |
| 2026-05-25 | TWB406 | FCO → ICN | May 25, 19:35 UTC | May 26, 05:45 UTC | 10h 10m |
| 2026-05-25 | TWB405 | ICN → FCO | May 25, 04:00 UTC | May 25, 16:35 UTC | 12h 35m |
| 2026-05-24 | TWB402 | CDG → ICN | May 24, 06:05 UTC | May 24, 06:30 UTC | 25m |
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 HL8228 page for operator, model, and routing details .