sensors Mode-S transponder
71C346
ICAO 24-bit transponder address · allocated to Korea, South
Currently assigned to HL8346 · BOEING 777-300ER
- Hex
- 71C346
- Octal
- 34341506
- Decimal
- 7,455,558
- Country
- KR
- Tail
- HL8346
- Type
- B77W
- Flights observed
- 89
- Distinct callsigns
- 20
- Country
- KR
- Last broadcast
- 22m ago
Current position
Country allocation
The ICAO 24-bit address 71C346 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 |
|---|---|---|---|
| KAL901 | Korean Air | 9 | 2026-05-27 |
| KAL085 | Korean Air | 9 | 2026-05-23 |
| KAL902 | Korean Air | 8 | 2026-05-28 |
| KAL086 | Korean Air | 8 | 2026-05-24 |
| KAL908 | Korean Air | 7 | 2026-05-26 |
| KAL646 | Korean Air | 7 | 2026-05-26 |
| KAL645 | Korean Air | 6 | 2026-05-12 |
| KAL907 | Korean Air | 4 | 2026-05-25 |
| KAL766 | Korean Air | 3 | 2026-04-30 |
| KAL765 | Korean Air | 3 | 2026-04-30 |
| KAL093 | Korean Air | 3 | 2026-05-29 |
| KAL938 | Korean Air | 2 | 2026-05-14 |
| KAL094 | Korean Air | 2 | 2026-05-29 |
| KAL036 | Korean Air | 2 | 2026-05-20 |
| KAL035 | Korean Air | 2 | 2026-05-20 |
| KAL034 | Korean Air | 2 | 2026-05-22 |
| KAL033 | Korean Air | 2 | 2026-05-22 |
| KAL006 | - | 2 | 2026-05-01 |
| KAL005 | - | 2 | 2026-04-30 |
| KAL937 | Korean Air | 1 | 2026-05-13 |
Recent flights last 50
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-05-29 | KAL094 | IAD → ICN | May 29, 18:00 UTC | May 30, 07:30 UTC | 13h 30m |
| 2026-05-29 | KAL093 | ICN → IAD | May 29, 02:00 UTC | May 29, 15:25 UTC | 13h 25m |
| 2026-05-28 | KAL902 | CDG → ICN | May 28, 06:40 UTC | May 28, 07:00 UTC | 20m |
| 2026-05-27 | KAL902 | CDG → ICN | May 27, 19:45 UTC | May 28, 05:55 UTC | 10h 10m |
| 2026-05-27 | KAL901 | ICN → CDG | May 27, 04:30 UTC | May 27, 17:05 UTC | 12h 36m |
| 2026-05-27 | KAL901 | ICN → CDG | May 27, 03:09 UTC | May 27, 03:24 UTC | 15m |
| 2026-05-26 | KAL646 | SIN → ICN | May 26, 10:05 UTC | May 27, 00:00 UTC | 13h 55m |
| 2026-05-26 | KAL908 | LHR → ICN | May 26, 06:39 UTC | May 26, 06:59 UTC | 20m |
| 2026-05-25 | KAL908 | LHR → ICN | May 25, 19:05 UTC | May 26, 05:49 UTC | 10h 45m |
| 2026-05-25 | KAL907 | ICN → LHR | May 25, 10:35 UTC | May 25, 15:30 UTC | 4h 55m |
| 2026-05-25 | KAL907 | ICN → LHR | May 25, 02:15 UTC | May 25, 02:30 UTC | 15m |
| 2026-05-24 | KAL086 | JFK → ICN | May 24, 05:30 UTC | May 24, 20:25 UTC | 14h 55m |
| 2026-05-23 | KAL085 | ICN → JFK | May 23, 11:05 UTC | May 24, 00:40 UTC | 13h 36m |
| 2026-05-22 | KAL034 | ATL → ICN | May 22, 15:55 UTC | May 23, 07:25 UTC | 15h 29m |
| 2026-05-22 | KAL033 | ICN → ATL | May 22, 00:15 UTC | May 22, 13:05 UTC | 12h 50m |
| 2026-05-20 | KAL036 | ATL → ICN | May 20, 17:40 UTC | May 21, 08:40 UTC | 15h 0m |
| 2026-05-20 | KAL035 | ICN → ATL | May 20, 02:10 UTC | May 20, 14:50 UTC | 12h 41m |
| 2026-05-18 | KAL036 | ATL → ICN | May 18, 18:00 UTC | May 19, 09:25 UTC | 15h 24m |
| 2026-05-18 | KAL035 | ICN → ATL | May 18, 02:10 UTC | May 18, 15:15 UTC | 13h 5m |
| 2026-05-17 | KAL086 | JFK → ICN | May 17, 05:25 UTC | May 17, 19:45 UTC | 14h 20m |
| 2026-05-16 | KAL085 | ICN → JFK | May 16, 10:55 UTC | May 17, 00:30 UTC | 13h 35m |
| 2026-05-16 | KAL902 | CDG → ICN | May 16, 06:20 UTC | May 16, 06:41 UTC | 20m |
| 2026-05-15 | KAL902 | CDG → ICN | May 15, 18:50 UTC | May 15, 23:05 UTC | 4h 15m |
| 2026-05-15 | KAL901 | ICN → CDG | May 15, 08:20 UTC | May 15, 16:10 UTC | 7h 49m |
| 2026-05-15 | KAL901 | ICN → CDG | May 15, 03:05 UTC | May 15, 03:20 UTC | 15m |
| 2026-05-14 | KAL938 | VIE → ICN | May 14, 03:50 UTC | May 14, 04:15 UTC | 25m |
| 2026-05-13 | KAL938 | VIE → ICN | May 13, 17:40 UTC | May 13, 20:40 UTC | 3h 0m |
| 2026-05-13 | KAL937 | ICN → VIE | May 13, 10:45 UTC | May 13, 14:20 UTC | 3h 35m |
| 2026-05-12 | KAL646 | SIN → ICN | May 12, 23:01 UTC | May 12, 23:35 UTC | 35m |
| 2026-05-12 | KAL646 | SIN → ICN | May 12, 20:45 UTC | May 12, 21:55 UTC | 1h 10m |
| 2026-05-12 | KAL645 | PUS → CBO | May 12, 10:10 UTC | May 12, 12:45 UTC | 2h 35m |
| 2026-05-11 | KAL034 | ATL → ICN | May 11, 16:05 UTC | May 12, 07:00 UTC | 14h 55m |
| 2026-05-11 | KAL033 | ICN → ATL | May 11, 00:10 UTC | May 11, 12:50 UTC | 12h 40m |
| 2026-05-09 | KAL902 | CDG → ICN | May 9, 19:00 UTC | May 9, 23:05 UTC | 4h 5m |
| 2026-05-09 | KAL901 | ICN → CDG | May 9, 04:25 UTC | May 9, 16:40 UTC | 12h 15m |
| 2026-05-09 | KAL901 | ICN → CDG | May 9, 03:05 UTC | May 9, 03:15 UTC | 10m |
| 2026-05-08 | KAL198P | - | May 8, 07:39 UTC | May 8, 08:14 UTC | 35m |
| 2026-05-01 | KAL193 | - | May 1, 22:10 UTC | May 1, 22:35 UTC | 25m |
| 2026-05-01 | KAL006 | - | May 1, 07:15 UTC | May 1, 20:00 UTC | 12h 45m |
| 2026-04-30 | KAL005 | - | Apr 30, 12:15 UTC | Apr 30, 22:35 UTC | 10h 20m |
| 2026-04-30 | KAL766 | CTS → ICN | Apr 30, 05:55 UTC | Apr 30, 08:35 UTC | 2h 40m |
| 2026-04-30 | KAL765 | ICN → CTS | Apr 30, 02:05 UTC | Apr 30, 04:10 UTC | 2h 5m |
| 2026-04-29 | KAL766 | CTS → ICN | Apr 29, 06:05 UTC | Apr 29, 08:40 UTC | 2h 35m |
| 2026-04-29 | KAL765 | ICN → CTS | Apr 29, 02:05 UTC | Apr 29, 04:00 UTC | 1h 55m |
| 2026-04-28 | KAL086 | JFK → ICN | Apr 28, 05:30 UTC | Apr 28, 20:20 UTC | 14h 50m |
| 2026-04-27 | KAL085 | ICN → JFK | Apr 27, 11:30 UTC | Apr 28, 01:05 UTC | 13h 35m |
| 2026-04-26 | KAL094 | IAD → ICN | Apr 26, 17:50 UTC | Apr 27, 08:50 UTC | 15h 0m |
| 2026-04-26 | KAL093 | ICN → IAD | Apr 26, 03:05 UTC | Apr 26, 15:15 UTC | 12h 10m |
| 2026-04-26 | KAL093 | ICN → IAD | Apr 26, 01:55 UTC | Apr 26, 02:15 UTC | 20m |
| 2026-04-25 | KAL646 | SIN → ICN | Apr 25, 21:00 UTC | Apr 25, 23:35 UTC | 2h 35m |
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 HL8346 page for operator, model, and routing details .