sensors Mode-S transponder
71C230
ICAO 24-bit transponder address · allocated to Korea, South
Currently assigned to HL8230 · BOMBARDIER BD-700 Global 6000/6500
- Hex
- 71C230
- Octal
- 34341060
- Decimal
- 7,455,280
- Country
- KR
- Tail
- HL8230
- Type
- GLEX
- Flights observed
- 32
- Distinct callsigns
- 18
- Country
- KR
- Last broadcast
- 8d ago
Last known position
Country allocation
The ICAO 24-bit address 71C230 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 18 distinct
| Callsign | Airline | Flights | Last seen |
|---|---|---|---|
| KAL2443 | Korean Air | 4 | 2026-05-24 |
| KAL300T | Korean Air | 3 | 2026-04-30 |
| KAL299T | - | 3 | 2026-04-30 |
| KAL2444 | Korean Air | 3 | 2026-05-28 |
| KAL499T | Korean Air | 2 | 2026-05-29 |
| KAL399T | - | 2 | 2026-05-29 |
| KAL2442 | Korean Air | 2 | 2026-05-26 |
| KAL2441 | Korean Air | 2 | 2026-05-23 |
| KAL199T | Korean Air | 2 | 2026-05-29 |
| KAL500T | - | 1 | 2026-04-15 |
| KAL400T | Korean Air | 1 | 2026-04-29 |
| KAL2954 | Korean Air | 1 | 2026-05-09 |
| KAL2953 | Korean Air | 1 | 2026-05-13 |
| KAL2951 | Korean Air | 1 | 2026-04-22 |
| KAL2448 | Korean Air | 1 | 2026-04-24 |
| KAL2446 | Korean Air | 1 | 2026-05-16 |
| KAL2445 | Korean Air | 1 | 2026-05-09 |
| KAL200T | - | 1 | 2026-04-29 |
Recent flights last 32
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-05-29 | KAL499T | GMP → USN | May 29, 11:20 UTC | May 29, 11:35 UTC | 15m |
| 2026-05-29 | KAL199T | GMP → USN | May 29, 10:50 UTC | May 29, 11:10 UTC | 20m |
| 2026-05-29 | KAL399T | - | May 29, 10:20 UTC | May 29, 10:40 UTC | 20m |
| 2026-05-28 | KAL2444 | SEA → GMP | May 28, 07:30 UTC | May 28, 11:15 UTC | 3h 45m |
| 2026-05-26 | KAL2442 | LBG → HND | May 26, 08:50 UTC | May 26, 12:50 UTC | 4h 0m |
| 2026-05-24 | KAL2443 | BFI → EWR | May 24, 08:30 UTC | May 24, 09:00 UTC | 30m |
| 2026-05-24 | KAL2443 | BFI → EWR | May 24, 05:50 UTC | May 24, 06:05 UTC | 15m |
| 2026-05-23 | KAL2441 | GMP → EWR | May 23, 23:15 UTC | May 24, 04:20 UTC | 5h 5m |
| 2026-05-16 | KAL2446 | FRA → HND | May 16, 04:20 UTC | May 16, 05:10 UTC | 50m |
| 2026-05-14 | KAL2444 | SEA → GMP | May 14, 03:00 UTC | May 14, 04:15 UTC | 1h 15m |
| 2026-05-13 | KAL2953 | GMP → UKB | May 13, 23:15 UTC | May 14, 01:00 UTC | 1h 45m |
| 2026-05-09 | KAL2954 | JFK → EWR | May 9, 07:15 UTC | May 9, 09:15 UTC | 2h 0m |
| 2026-05-09 | KAL2445 | GMP → UTP | May 9, 04:25 UTC | May 9, 06:00 UTC | 1h 35m |
| 2026-05-07 | KAL2444 | SEA → GMP | May 7, 21:55 UTC | May 8, 09:09 UTC | 11h 14m |
| 2026-05-07 | KAL2442 | LBG → HND | May 7, 16:50 UTC | May 7, 20:50 UTC | 4h 0m |
| 2026-05-05 | KAL2443 | BFI → EWR | May 5, 13:50 UTC | May 5, 16:40 UTC | 2h 50m |
| 2026-05-03 | KAL2441 | GMP → EWR | May 3, 11:40 UTC | May 3, 22:25 UTC | 10h 45m |
| 2026-04-30 | KAL300T | USN → GMP | Apr 30, 07:50 UTC | Apr 30, 08:10 UTC | 20m |
| 2026-04-30 | KAL299T | - | Apr 30, 06:30 UTC | Apr 30, 07:00 UTC | 30m |
| 2026-04-29 | KAL400T | USN → GMP | Apr 29, 12:40 UTC | Apr 29, 13:05 UTC | 25m |
| 2026-04-29 | KAL399T | - | Apr 29, 11:55 UTC | Apr 29, 12:05 UTC | 10m |
| 2026-04-29 | KAL300T | USN → GMP | Apr 29, 10:30 UTC | Apr 29, 10:50 UTC | 20m |
| 2026-04-29 | KAL299T | - | Apr 29, 09:15 UTC | Apr 29, 09:35 UTC | 20m |
| 2026-04-29 | KAL200T | - | Apr 29, 06:49 UTC | Apr 29, 07:15 UTC | 25m |
| 2026-04-29 | KAL199T | - | Apr 29, 05:30 UTC | Apr 29, 06:00 UTC | 30m |
| 2026-04-24 | KAL2448 | FAB → NRT | Apr 24, 06:30 UTC | Apr 24, 07:10 UTC | 40m |
| 2026-04-23 | KAL2443 | BFI → EWR | Apr 23, 05:50 UTC | Apr 23, 06:01 UTC | 10m |
| 2026-04-22 | KAL2951 | LAX → LAS | Apr 22, 22:30 UTC | Apr 22, 23:15 UTC | 45m |
| 2026-04-15 | KAL500T | - | Apr 15, 12:05 UTC | Apr 15, 12:20 UTC | 15m |
| 2026-04-15 | KAL499T | GMP → USN | Apr 15, 11:20 UTC | Apr 15, 11:40 UTC | 20m |
| 2026-04-15 | KAL300T | - | Apr 15, 10:10 UTC | Apr 15, 10:30 UTC | 20m |
| 2026-04-15 | KAL299T | GMP → GMP | Apr 15, 09:40 UTC | Apr 15, 10:00 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 HL8230 page for operator, model, and routing details .