sensors Mode-S transponder
71C522
ICAO 24-bit transponder address · allocated to Korea, South
Currently assigned to HL8522 · AIRBUS A-350-900
- Hex
- 71C522
- Octal
- 34342442
- Decimal
- 7,456,034
- Country
- KR
- Tail
- HL8522
- Type
- A359
- Flights observed
- 246
- Distinct callsigns
- 20
- Country
- KR
- Last broadcast
- 1h ago
Last known position
Country allocation
The ICAO 24-bit address 71C522 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 20 distinct
| Callsign | Airline | Flights | Last seen |
|---|---|---|---|
| AAR502 | - | 21 | 2026-07-12 |
| AAR501 | - | 19 | 2026-07-11 |
| AAR761 | - | 18 | 2026-07-10 |
| AAR762 | - | 17 | 2026-07-10 |
| AAR752 | - | 14 | 2026-07-12 |
| AAR751 | - | 14 | 2026-07-12 |
| AAR522 | - | 14 | 2026-07-10 |
| AAR546 | - | 10 | 2026-07-01 |
| AAR545 | - | 10 | 2026-06-30 |
| AAR521 | - | 10 | 2026-07-08 |
| AAR212 | - | 10 | 2026-06-17 |
| AAR512 | - | 9 | 2026-07-14 |
| AAR511 | - | 7 | 2026-07-13 |
| AAR211 | - | 7 | 2026-06-18 |
| AAR582 | - | 5 | 2026-06-17 |
| AAR542 | Asiana Airlines | 5 | 2026-06-07 |
| AAR113 | Asiana Airlines | 5 | 2026-05-16 |
| AAR581 | - | 4 | 2026-06-16 |
| AAR541 | Asiana Airlines | 4 | 2026-06-06 |
| AAR115 | - | 4 | 2026-06-16 |
Recent flights last 50
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-07-14 | AAR512 | - | Jul 14, 06:10 UTC | Jul 14, 06:30 UTC | 20m |
| 2026-07-13 | AAR512 | - | Jul 13, 19:25 UTC | Jul 14, 05:25 UTC | 10h 0m |
| 2026-07-13 | AAR511 | ICN → BCN | Jul 13, 03:25 UTC | Jul 13, 17:00 UTC | 13h 35m |
| 2026-07-12 | AAR752 | - | Jul 12, 18:20 UTC | Jul 12, 21:35 UTC | 3h 15m |
| 2026-07-12 | AAR751 | - | Jul 12, 13:01 UTC | Jul 12, 13:20 UTC | 20m |
| 2026-07-12 | AAR751 | - | Jul 12, 07:50 UTC | Jul 12, 10:05 UTC | 2h 15m |
| 2026-07-12 | AAR502 | - | Jul 12, 04:25 UTC | Jul 12, 04:45 UTC | 20m |
| 2026-07-11 | AAR502 | - | Jul 11, 17:25 UTC | Jul 12, 03:35 UTC | 10h 10m |
| 2026-07-11 | AAR501 | - | Jul 11, 02:40 UTC | Jul 11, 14:50 UTC | 12h 10m |
| 2026-07-11 | AAR501 | - | Jul 11, 01:25 UTC | Jul 11, 01:45 UTC | 20m |
| 2026-07-10 | AAR762 | - | Jul 10, 16:35 UTC | Jul 10, 21:40 UTC | 5h 6m |
| 2026-07-10 | AAR762 | - | Jul 10, 15:05 UTC | Jul 10, 15:15 UTC | 10m |
| 2026-07-10 | AAR761 | - | Jul 10, 12:50 UTC | Jul 10, 13:05 UTC | 15m |
| 2026-07-10 | AAR761 | - | Jul 10, 06:35 UTC | Jul 10, 11:20 UTC | 4h 45m |
| 2026-07-10 | AAR522 | - | Jul 10, 02:50 UTC | Jul 10, 03:15 UTC | 25m |
| 2026-07-09 | AAR522 | - | Jul 9, 15:55 UTC | Jul 10, 01:55 UTC | 10h 0m |
| 2026-07-08 | AAR521 | ICN → LHR | Jul 8, 23:35 UTC | Jul 9, 13:25 UTC | 13h 50m |
| 2026-07-08 | AAR512 | BCN → ICN | Jul 8, 06:25 UTC | Jul 8, 06:50 UTC | 25m |
| 2026-07-07 | AAR512 | BCN → ICN | Jul 7, 19:20 UTC | Jul 8, 05:30 UTC | 10h 10m |
| 2026-07-07 | AAR511 | - | Jul 7, 12:00 UTC | Jul 7, 17:00 UTC | 5h 0m |
| 2026-07-07 | AAR511 | - | Jul 7, 03:30 UTC | Jul 7, 03:55 UTC | 25m |
| 2026-07-06 | AAR762 | - | Jul 6, 16:20 UTC | Jul 6, 21:40 UTC | 5h 20m |
| 2026-07-06 | AAR761 | - | Jul 6, 12:45 UTC | Jul 6, 13:00 UTC | 15m |
| 2026-07-06 | AAR761 | - | Jul 6, 06:30 UTC | Jul 6, 11:25 UTC | 4h 55m |
| 2026-07-05 | AAR752 | SIN → ICN | Jul 5, 18:25 UTC | Jul 5, 21:30 UTC | 3h 5m |
| 2026-07-05 | AAR751 | - | Jul 5, 12:45 UTC | Jul 5, 13:05 UTC | 20m |
| 2026-07-05 | AAR751 | - | Jul 5, 07:40 UTC | Jul 5, 10:15 UTC | 2h 35m |
| 2026-07-05 | AAR502 | - | Jul 5, 04:10 UTC | Jul 5, 04:30 UTC | 20m |
| 2026-07-04 | AAR502 | - | Jul 4, 17:30 UTC | Jul 5, 03:20 UTC | 9h 50m |
| 2026-07-04 | AAR501 | - | Jul 4, 02:45 UTC | Jul 4, 15:00 UTC | 12h 15m |
| 2026-07-04 | AAR501 | - | Jul 4, 01:35 UTC | Jul 4, 01:55 UTC | 20m |
| 2026-07-03 | AAR762 | - | Jul 3, 16:30 UTC | Jul 3, 21:40 UTC | 5h 10m |
| 2026-07-03 | AAR761 | - | Jul 3, 12:30 UTC | Jul 3, 12:50 UTC | 20m |
| 2026-07-03 | AAR761 | - | Jul 3, 06:25 UTC | Jul 3, 11:10 UTC | 4h 45m |
| 2026-07-03 | AAR522 | - | Jul 3, 03:20 UTC | Jul 3, 03:45 UTC | 25m |
| 2026-07-02 | AAR522 | - | Jul 2, 16:00 UTC | Jul 3, 02:25 UTC | 10h 25m |
| 2026-07-01 | AAR521 | ICN → LHR | Jul 1, 23:35 UTC | Jul 2, 13:15 UTC | 13h 40m |
| 2026-07-01 | AAR105 | - | Jul 1, 10:55 UTC | Jul 1, 12:50 UTC | 1h 55m |
| 2026-07-01 | AAR106 | ICN → NRT | Jul 1, 07:05 UTC | Jul 1, 08:55 UTC | 1h 50m |
| 2026-07-01 | AAR546 | - | Jul 1, 03:20 UTC | Jul 1, 03:45 UTC | 25m |
| 2026-06-30 | AAR546 | - | Jun 30, 17:15 UTC | Jul 1, 02:35 UTC | 9h 20m |
| 2026-06-30 | AAR545 | - | Jun 30, 03:30 UTC | Jun 30, 14:45 UTC | 11h 15m |
| 2026-06-30 | AAR545 | - | Jun 30, 02:20 UTC | Jun 30, 02:30 UTC | 10m |
| 2026-06-29 | AAR742 | - | Jun 29, 18:39 UTC | Jun 29, 23:44 UTC | 5h 5m |
| 2026-06-29 | AAR741 | ICN → BKK | Jun 29, 11:04 UTC | Jun 29, 16:00 UTC | 4h 55m |
| 2026-06-28 | AAR201 | LAX → ICN | Jun 28, 17:25 UTC | Jun 29, 06:14 UTC | 12h 50m |
| 2026-06-28 | AAR202 | ICN → LAX | Jun 28, 04:05 UTC | Jun 28, 14:25 UTC | 10h 20m |
| 2026-06-27 | AAR752 | SIN → ICN | Jun 27, 21:15 UTC | Jun 28, 00:04 UTC | 2h 50m |
| 2026-06-27 | AAR751 | - | Jun 27, 10:29 UTC | Jun 27, 16:20 UTC | 5h 50m |
| 2026-06-26 | AAR201 | LAX → ICN | Jun 26, 17:25 UTC | Jun 27, 06:30 UTC | 13h 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 HL8522 page for operator, model, and routing details .