sensors Mode-S transponder
71C008
ICAO 24-bit transponder address · allocated to Korea, South
Currently assigned to HL8008 · BOEING 777-300ER
- Hex
- 71C008
- Octal
- 34340010
- Decimal
- 7,454,728
- Country
- KR
- Tail
- HL8008
- Type
- B77W
- Flights observed
- 85
- Distinct callsigns
- 19
- Country
- KR
- Last broadcast
- 4h ago
Last known position
Country allocation
The ICAO 24-bit address 71C008 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 19 distinct
| Callsign | Airline | Flights | Last seen |
|---|---|---|---|
| KAL646 | Korean Air | 9 | 2026-05-22 |
| KAL645 | Korean Air | 9 | 2026-05-22 |
| KAL908 | Korean Air | 8 | 2026-05-24 |
| KAL907 | Korean Air | 7 | 2026-05-23 |
| KAL902 | Korean Air | 6 | 2026-05-06 |
| KAL093 | - | 6 | 2026-04-13 |
| KAL033 | Korean Air | 6 | 2026-05-25 |
| KAL034 | Korean Air | 5 | 2026-05-25 |
| KAL938 | Korean Air | 4 | 2026-05-08 |
| KAL937 | Korean Air | 4 | 2026-05-08 |
| KAL901 | Korean Air | 4 | 2026-05-06 |
| KAL094 | - | 4 | 2026-04-14 |
| KAL036 | Korean Air | 3 | 2026-05-28 |
| KAL035 | Korean Air | 3 | 2026-05-28 |
| KAL006 | - | 2 | 2026-05-18 |
| KAL005 | - | 2 | 2026-05-17 |
| KAL602 | Korean Air | 1 | 2026-05-29 |
| KAL086 | Korean Air | 1 | 2026-05-27 |
| KAL085 | Korean Air | 1 | 2026-05-26 |
Recent flights last 50
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-05-29 | KAL602 | CEB → ICN | May 29, 11:35 UTC | May 29, 21:20 UTC | 9h 45m |
| 2026-05-28 | KAL036 | ATL → ICN | May 28, 18:00 UTC | May 29, 09:10 UTC | 15h 10m |
| 2026-05-28 | KAL035 | ICN → ATL | May 28, 02:10 UTC | May 28, 15:35 UTC | 13h 25m |
| 2026-05-27 | KAL086 | JFK → ICN | May 27, 05:09 UTC | May 27, 20:05 UTC | 14h 56m |
| 2026-05-26 | KAL085 | ICN → JFK | May 26, 11:09 UTC | May 27, 00:44 UTC | 13h 35m |
| 2026-05-25 | KAL034 | ATL → ICN | May 25, 16:25 UTC | May 26, 06:44 UTC | 14h 20m |
| 2026-05-25 | KAL033 | ICN → ATL | May 25, 01:55 UTC | May 25, 13:35 UTC | 11h 40m |
| 2026-05-24 | KAL908 | LHR → ICN | May 24, 06:50 UTC | May 24, 07:15 UTC | 25m |
| 2026-05-23 | KAL908 | LHR → ICN | May 23, 19:10 UTC | May 23, 23:45 UTC | 4h 35m |
| 2026-05-23 | KAL907 | ICN → LHR | May 23, 02:20 UTC | May 23, 15:50 UTC | 13h 29m |
| 2026-05-22 | KAL646 | SIN → ICN | May 22, 20:15 UTC | May 22, 23:15 UTC | 3h 0m |
| 2026-05-22 | KAL645 | PUS → CBO | May 22, 10:00 UTC | May 22, 15:25 UTC | 5h 25m |
| 2026-05-21 | KAL034 | ATL → ICN | May 21, 15:55 UTC | May 22, 06:40 UTC | 14h 45m |
| 2026-05-21 | KAL033 | ICN → ATL | May 21, 00:15 UTC | May 21, 13:01 UTC | 12h 45m |
| 2026-05-19 | KAL036 | ATL → ICN | May 19, 17:55 UTC | May 20, 08:45 UTC | 14h 51m |
| 2026-05-19 | KAL035 | ICN → ATL | May 19, 02:10 UTC | May 19, 15:20 UTC | 13h 10m |
| 2026-05-18 | KAL006 | LAS → ICN | May 18, 07:20 UTC | May 18, 20:25 UTC | 13h 4m |
| 2026-05-17 | KAL005 | ICN → LAS | May 17, 12:15 UTC | May 17, 22:25 UTC | 10h 10m |
| 2026-05-16 | KAL036 | ATL → ICN | May 16, 17:30 UTC | May 17, 08:30 UTC | 15h 0m |
| 2026-05-16 | KAL035 | ICN → ATL | May 16, 01:55 UTC | May 16, 15:05 UTC | 13h 11m |
| 2026-05-15 | KAL908 | LHR → ICN | May 15, 08:00 UTC | May 15, 08:20 UTC | 20m |
| 2026-05-14 | KAL908 | LHR → ICN | May 14, 20:15 UTC | May 14, 23:10 UTC | 2h 55m |
| 2026-05-14 | KAL907 | ICN → LHR | May 14, 10:45 UTC | May 14, 16:05 UTC | 5h 20m |
| 2026-05-14 | KAL907 | ICN → LHR | May 14, 02:30 UTC | May 14, 02:40 UTC | 10m |
| 2026-05-13 | KAL646 | SIN → ICN | May 13, 20:45 UTC | May 13, 23:30 UTC | 2h 45m |
| 2026-05-13 | KAL646 | SIN → ICN | May 13, 17:45 UTC | May 13, 17:55 UTC | 10m |
| 2026-05-13 | KAL645 | PUS → CBO | May 13, 10:15 UTC | May 13, 15:35 UTC | 5h 20m |
| 2026-05-12 | KAL034 | ATL → ICN | May 12, 15:50 UTC | May 13, 06:55 UTC | 15h 5m |
| 2026-05-12 | KAL033 | ICN → ATL | May 12, 09:05 UTC | May 12, 13:20 UTC | 4h 15m |
| 2026-05-10 | KAL908 | LHR → ICN | May 10, 19:00 UTC | May 10, 23:19 UTC | 4h 20m |
| 2026-05-10 | KAL907 | ICN → LHR | May 10, 11:20 UTC | May 10, 16:30 UTC | 5h 10m |
| 2026-05-10 | KAL907 | ICN → LHR | May 10, 02:30 UTC | May 10, 02:39 UTC | 10m |
| 2026-05-09 | KAL646 | SIN → ICN | May 9, 20:44 UTC | May 9, 23:35 UTC | 2h 50m |
| 2026-05-09 | KAL645 | PUS → CBO | May 9, 10:20 UTC | May 9, 15:40 UTC | 5h 20m |
| 2026-05-08 | KAL938 | VIE → ICN | May 8, 16:50 UTC | May 9, 02:05 UTC | 9h 15m |
| 2026-05-08 | KAL937 | ICN → VIE | May 8, 03:35 UTC | May 8, 14:30 UTC | 10h 55m |
| 2026-05-06 | KAL902 | CDG → ICN | May 6, 18:55 UTC | May 7, 05:30 UTC | 10h 35m |
| 2026-05-06 | KAL901 | ICN → CDG | May 6, 04:05 UTC | May 6, 16:20 UTC | 12h 15m |
| 2026-05-05 | KAL006 | - | May 5, 06:55 UTC | May 5, 19:15 UTC | 12h 20m |
| 2026-05-04 | KAL005 | - | May 4, 12:25 UTC | May 4, 23:15 UTC | 10h 51m |
| 2026-05-03 | KAL938 | VIE → ICN | May 3, 16:40 UTC | May 4, 02:19 UTC | 9h 40m |
| 2026-05-03 | KAL937 | ICN → VIE | May 3, 03:25 UTC | May 3, 13:55 UTC | 10h 29m |
| 2026-05-02 | KAL646 | SIN → ICN | May 2, 20:50 UTC | May 2, 23:35 UTC | 2h 45m |
| 2026-05-02 | KAL645 | PUS → CBO | May 2, 10:10 UTC | May 2, 15:55 UTC | 5h 45m |
| 2026-05-01 | KAL902 | CDG → ICN | May 1, 18:55 UTC | May 2, 05:50 UTC | 10h 56m |
| 2026-05-01 | KAL901 | ICN → CDG | May 1, 04:10 UTC | May 1, 16:15 UTC | 12h 5m |
| 2026-04-30 | KAL646 | SIN → ICN | Apr 30, 20:45 UTC | Apr 30, 23:30 UTC | 2h 45m |
| 2026-04-30 | KAL645 | PUS → CBO | Apr 30, 15:35 UTC | Apr 30, 16:00 UTC | 25m |
| 2026-04-30 | KAL645 | PUS → CBO | Apr 30, 10:00 UTC | Apr 30, 13:00 UTC | 3h 0m |
| 2026-04-30 | KAL908 | LHR → ICN | Apr 30, 06:40 UTC | Apr 30, 06:55 UTC | 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 HL8008 page for operator, model, and routing details .