sensors Mode-S transponder
71C211
ICAO 24-bit transponder address · allocated to Korea, South
Currently assigned to HL8211 · AIRBUS A-330-200
- Hex
- 71C211
- Octal
- 34341021
- Decimal
- 7,455,249
- Country
- KR
- Tail
- HL8211
- Type
- A332
- Flights observed
- 114
- Distinct callsigns
- 11
- Country
- KR
- Last broadcast
- 1h ago
Last known position
Country allocation
The ICAO 24-bit address 71C211 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 11 distinct
Recent flights last 50
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-07-14 | TWB405 | - | Jul 14, 05:20 UTC | Jul 14, 17:20 UTC | 12h 0m |
| 2026-07-14 | TWB405 | - | Jul 14, 03:55 UTC | Jul 14, 04:20 UTC | 25m |
| 2026-07-13 | TWB406 | - | Jul 13, 05:50 UTC | Jul 13, 06:10 UTC | 20m |
| 2026-07-12 | TWB406 | - | Jul 12, 19:35 UTC | Jul 13, 05:05 UTC | 9h 30m |
| 2026-07-12 | TWB405 | - | Jul 12, 05:25 UTC | Jul 12, 17:10 UTC | 11h 45m |
| 2026-07-12 | TWB405 | - | Jul 12, 04:10 UTC | Jul 12, 04:30 UTC | 20m |
| 2026-07-10 | TWB410 | - | Jul 10, 03:00 UTC | Jul 10, 03:25 UTC | 25m |
| 2026-07-09 | TWB410 | - | Jul 9, 17:15 UTC | Jul 10, 02:00 UTC | 8h 45m |
| 2026-07-09 | TWB409 | - | Jul 9, 03:55 UTC | Jul 9, 15:05 UTC | 11h 10m |
| 2026-07-09 | TWB409 | - | Jul 9, 02:30 UTC | Jul 9, 03:00 UTC | 30m |
| 2026-07-08 | TWB408 | - | Jul 8, 09:10 UTC | Jul 8, 09:35 UTC | 25m |
| 2026-07-07 | TWB408 | - | Jul 7, 21:40 UTC | Jul 8, 08:25 UTC | 10h 45m |
| 2026-07-07 | TWB3407 | - | Jul 7, 10:55 UTC | Jul 7, 15:45 UTC | 4h 50m |
| 2026-07-07 | TWB3407 | - | Jul 7, 05:25 UTC | Jul 7, 05:45 UTC | 20m |
| 2026-07-05 | TWB402 | - | Jul 5, 05:55 UTC | Jul 5, 06:15 UTC | 20m |
| 2026-07-04 | TWB402 | - | Jul 4, 18:50 UTC | Jul 5, 05:05 UTC | 10h 15m |
| 2026-07-04 | TWB401 | - | Jul 4, 02:40 UTC | Jul 4, 15:15 UTC | 12h 35m |
| 2026-07-04 | TWB401 | - | Jul 4, 01:30 UTC | Jul 4, 01:45 UTC | 15m |
| 2026-07-02 | TWB404 | - | Jul 2, 04:55 UTC | Jul 2, 05:20 UTC | 25m |
| 2026-07-01 | TWB404 | - | Jul 1, 18:05 UTC | Jul 1, 20:35 UTC | 2h 30m |
| 2026-07-01 | TWB403 | ICN → FRA | Jul 1, 01:10 UTC | Jul 1, 14:10 UTC | 13h 0m |
| 2026-06-30 | TWB406 | - | Jun 30, 06:30 UTC | Jun 30, 06:50 UTC | 20m |
| 2026-06-29 | TWB406 | - | Jun 29, 19:49 UTC | Jun 30, 05:45 UTC | 9h 55m |
| 2026-06-29 | TWB405 | - | Jun 29, 05:20 UTC | Jun 29, 17:19 UTC | 12h 0m |
| 2026-06-29 | TWB405 | - | Jun 29, 04:04 UTC | Jun 29, 04:20 UTC | 15m |
| 2026-06-28 | TWB408 | - | Jun 28, 06:55 UTC | Jun 28, 07:14 UTC | 20m |
| 2026-06-27 | TWB408 | - | Jun 27, 19:19 UTC | Jun 28, 06:05 UTC | 10h 45m |
| 2026-06-27 | TWB407 | - | Jun 27, 03:40 UTC | Jun 27, 16:20 UTC | 12h 40m |
| 2026-06-27 | TWB407 | - | Jun 27, 02:25 UTC | Jun 27, 02:45 UTC | 20m |
| 2026-06-17 | TWB404 | - | Jun 17, 04:15 UTC | Jun 17, 04:40 UTC | 25m |
| 2026-06-16 | TWB404 | - | Jun 16, 17:19 UTC | Jun 16, 21:00 UTC | 3h 41m |
| 2026-06-16 | TWB403 | - | Jun 16, 10:04 UTC | Jun 16, 14:45 UTC | 4h 40m |
| 2026-06-16 | TWB403 | - | Jun 16, 01:25 UTC | Jun 16, 01:40 UTC | 15m |
| 2026-06-15 | TWB404 | - | Jun 15, 03:50 UTC | Jun 15, 04:15 UTC | 25m |
| 2026-06-14 | TWB404 | - | Jun 14, 17:10 UTC | Jun 14, 19:15 UTC | 2h 5m |
| 2026-06-14 | TWB403 | ICN → FRA | Jun 14, 01:20 UTC | Jun 14, 14:40 UTC | 13h 20m |
| 2026-06-13 | TWB408 | BCN → ICN | Jun 13, 07:15 UTC | Jun 13, 07:40 UTC | 25m |
| 2026-06-12 | TWB408 | BCN → ICN | Jun 12, 19:35 UTC | Jun 13, 06:30 UTC | 10h 54m |
| 2026-06-12 | TWB407 | - | Jun 12, 04:25 UTC | Jun 12, 17:00 UTC | 12h 35m |
| 2026-06-12 | TWB407 | ICN → BCN | Jun 12, 03:10 UTC | Jun 12, 03:30 UTC | 20m |
| 2026-06-10 | TWB408 | BCN → ICN | Jun 10, 19:25 UTC | Jun 10, 22:30 UTC | 3h 5m |
| 2026-06-10 | TWB407 | ICN → BCN | Jun 10, 03:50 UTC | Jun 10, 16:25 UTC | 12h 35m |
| 2026-06-10 | TWB407 | ICN → BCN | Jun 10, 02:30 UTC | Jun 10, 02:50 UTC | 20m |
| 2026-06-09 | TWB408 | BCN → ICN | Jun 9, 07:15 UTC | Jun 9, 07:35 UTC | 20m |
| 2026-06-08 | TWB408 | BCN → ICN | Jun 8, 19:35 UTC | Jun 9, 06:20 UTC | 10h 45m |
| 2026-06-08 | TWB407 | ICN → BCN | Jun 8, 04:00 UTC | Jun 8, 16:25 UTC | 12h 25m |
| 2026-06-08 | TWB407 | ICN → BCN | Jun 8, 02:35 UTC | Jun 8, 02:50 UTC | 15m |
| 2026-06-06 | TWB406 | FCO → ICN | Jun 6, 06:15 UTC | Jun 6, 06:40 UTC | 25m |
| 2026-06-05 | TWB406 | FCO → ICN | Jun 5, 19:40 UTC | Jun 6, 05:25 UTC | 9h 45m |
| 2026-06-05 | TWB405 | ICN → FCO | Jun 5, 03:55 UTC | Jun 5, 17:10 UTC | 13h 15m |
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 HL8211 page for operator, model, and routing details .