sensors Mode-S transponder
71C347
ICAO 24-bit transponder address · allocated to Korea, South
Currently assigned to HL8347 · BOEING 777-300ER
- Hex
- 71C347
- Octal
- 34341507
- Decimal
- 7,455,559
- Country
- KR
- Tail
- HL8347
- Type
- B77W
- Flights observed
- 109
- Distinct callsigns
- 18
- Country
- KR
- Last broadcast
- 4h ago
Last known position
Country allocation
The ICAO 24-bit address 71C347 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 |
|---|---|---|---|
| KAL086 | Korean Air | 11 | 2026-05-26 |
| KAL085 | Korean Air | 11 | 2026-05-25 |
| KAL902 | Korean Air | 9 | 2026-05-23 |
| KAL036 | Korean Air | 9 | 2026-05-14 |
| KAL907 | Korean Air | 8 | 2026-05-29 |
| KAL901 | Korean Air | 8 | 2026-05-22 |
| KAL646 | Korean Air | 7 | 2026-05-21 |
| KAL645 | Korean Air | 7 | 2026-05-21 |
| KAL908 | Korean Air | 6 | 2026-05-29 |
| KAL035 | Korean Air | 6 | 2026-05-14 |
| KAL034 | Korean Air | 5 | 2026-05-20 |
| KAL938 | Korean Air | 4 | 2026-05-25 |
| KAL937 | Korean Air | 4 | 2026-05-24 |
| KAL033 | Korean Air | 4 | 2026-05-20 |
| KAL094 | Korean Air | 3 | 2026-05-27 |
| KAL093 | Korean Air | 2 | 2026-05-27 |
| KAL006 | - | 2 | 2026-05-13 |
| KAL005 | - | 2 | 2026-05-12 |
Recent flights last 50
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-05-29 | KAL908 | LHR → ICN | May 29, 20:35 UTC | May 30, 00:55 UTC | 4h 20m |
| 2026-05-29 | KAL907 | ICN → LHR | May 29, 03:55 UTC | May 29, 16:35 UTC | 12h 40m |
| 2026-05-29 | KAL907 | ICN → LHR | May 29, 02:40 UTC | May 29, 02:50 UTC | 10m |
| 2026-05-27 | KAL094 | IAD → ICN | May 27, 18:00 UTC | May 28, 09:05 UTC | 15h 5m |
| 2026-05-27 | KAL093 | ICN → IAD | May 27, 01:49 UTC | May 27, 15:05 UTC | 13h 15m |
| 2026-05-26 | KAL086 | JFK → ICN | May 26, 05:20 UTC | May 26, 20:00 UTC | 14h 40m |
| 2026-05-25 | KAL085 | ICN → JFK | May 25, 11:10 UTC | May 26, 00:44 UTC | 13h 34m |
| 2026-05-25 | KAL938 | VIE → ICN | May 25, 02:55 UTC | May 25, 03:20 UTC | 25m |
| 2026-05-24 | KAL938 | VIE → ICN | May 24, 16:40 UTC | May 24, 19:55 UTC | 3h 15m |
| 2026-05-24 | KAL937 | ICN → VIE | May 24, 10:40 UTC | May 24, 14:05 UTC | 3h 25m |
| 2026-05-24 | KAL937 | ICN → VIE | May 24, 02:05 UTC | May 24, 02:20 UTC | 15m |
| 2026-05-23 | KAL902 | CDG → ICN | May 23, 06:15 UTC | May 23, 06:40 UTC | 25m |
| 2026-05-22 | KAL902 | CDG → ICN | May 22, 19:00 UTC | May 22, 23:25 UTC | 4h 25m |
| 2026-05-22 | KAL901 | ICN → CDG | May 22, 04:30 UTC | May 22, 16:20 UTC | 11h 50m |
| 2026-05-22 | KAL901 | ICN → CDG | May 22, 03:15 UTC | May 22, 03:35 UTC | 20m |
| 2026-05-21 | KAL646 | SIN → ICN | May 21, 20:45 UTC | May 21, 23:50 UTC | 3h 5m |
| 2026-05-21 | KAL645 | PUS → CBO | May 21, 10:25 UTC | May 21, 13:15 UTC | 2h 50m |
| 2026-05-20 | KAL034 | ATL → ICN | May 20, 16:10 UTC | May 21, 07:15 UTC | 15h 5m |
| 2026-05-20 | KAL033 | ICN → ATL | May 20, 00:25 UTC | May 20, 13:15 UTC | 12h 51m |
| 2026-05-19 | KAL902 | CDG → ICN | May 19, 06:15 UTC | May 19, 06:40 UTC | 25m |
| 2026-05-18 | KAL902 | CDG → ICN | May 18, 19:00 UTC | May 19, 05:25 UTC | 10h 25m |
| 2026-05-18 | KAL901 | ICN → CDG | May 18, 02:50 UTC | May 18, 16:20 UTC | 13h 30m |
| 2026-05-17 | KAL646 | SIN → ICN | May 17, 21:01 UTC | May 18, 00:10 UTC | 3h 10m |
| 2026-05-17 | KAL646 | SIN → ICN | May 17, 17:55 UTC | May 17, 18:05 UTC | 10m |
| 2026-05-17 | KAL645 | PUS → CBO | May 17, 15:05 UTC | May 17, 15:20 UTC | 15m |
| 2026-05-17 | KAL645 | PUS → CBO | May 17, 09:55 UTC | May 17, 12:10 UTC | 2h 15m |
| 2026-05-16 | KAL034 | ATL → ICN | May 16, 15:50 UTC | May 17, 06:40 UTC | 14h 50m |
| 2026-05-16 | KAL033 | ICN → ATL | May 16, 00:10 UTC | May 16, 13:31 UTC | 13h 21m |
| 2026-05-14 | KAL036 | ATL → ICN | May 14, 17:50 UTC | May 15, 07:45 UTC | 13h 55m |
| 2026-05-14 | KAL035 | ICN → ATL | May 14, 02:00 UTC | May 14, 15:10 UTC | 13h 10m |
| 2026-05-13 | KAL006 | LAS → ICN | May 13, 07:00 UTC | May 13, 19:00 UTC | 12h 0m |
| 2026-05-12 | KAL005 | - | May 12, 12:40 UTC | May 12, 23:15 UTC | 10h 35m |
| 2026-05-11 | KAL902 | CDG → ICN | May 11, 18:55 UTC | May 11, 21:30 UTC | 2h 35m |
| 2026-05-11 | KAL901 | ICN → CDG | May 11, 07:55 UTC | May 11, 16:10 UTC | 8h 15m |
| 2026-05-10 | KAL646 | SIN → ICN | May 10, 21:14 UTC | May 11, 00:05 UTC | 2h 50m |
| 2026-05-10 | KAL645 | PUS → CBO | May 10, 10:30 UTC | May 10, 15:55 UTC | 5h 25m |
| 2026-05-09 | KAL086 | JFK → ICN | May 9, 05:15 UTC | May 9, 20:00 UTC | 14h 45m |
| 2026-05-08 | KAL085 | ICN → JFK | May 8, 11:34 UTC | May 9, 00:50 UTC | 13h 15m |
| 2026-05-07 | KAL902 | CDG → ICN | May 7, 19:10 UTC | May 8, 05:39 UTC | 10h 30m |
| 2026-05-07 | KAL901 | ICN → CDG | May 7, 04:10 UTC | May 7, 16:20 UTC | 12h 10m |
| 2026-05-07 | KAL901 | ICN → CDG | May 7, 02:50 UTC | May 7, 03:05 UTC | 15m |
| 2026-05-06 | KAL646 | SIN → ICN | May 6, 10:10 UTC | May 6, 23:25 UTC | 13h 14m |
| 2026-05-06 | KAL034 | ATL → ICN | May 6, 07:01 UTC | May 6, 07:25 UTC | 25m |
| 2026-05-05 | KAL034 | ATL → ICN | May 5, 16:00 UTC | May 6, 06:00 UTC | 14h 0m |
| 2026-05-05 | KAL033 | ICN → ATL | May 5, 00:50 UTC | May 5, 13:35 UTC | 12h 45m |
| 2026-05-04 | KAL094 | IAD → ICN | May 4, 08:25 UTC | May 4, 08:55 UTC | 30m |
| 2026-05-03 | KAL094 | IAD → ICN | May 3, 17:35 UTC | May 4, 07:15 UTC | 13h 40m |
| 2026-05-03 | KAL093 | ICN → IAD | May 3, 02:20 UTC | May 3, 15:05 UTC | 12h 44m |
| 2026-05-01 | KAL036 | ATL → ICN | May 1, 17:50 UTC | May 2, 09:05 UTC | 15h 16m |
| 2026-05-01 | KAL035 | ICN → ATL | May 1, 03:15 UTC | May 1, 15:15 UTC | 12h 0m |
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 HL8347 page for operator, model, and routing details .