sensors Mode-S transponder
71C009
ICAO 24-bit transponder address · allocated to Korea, South
Currently assigned to HL8009 · BOEING 777-300ER
- Hex
- 71C009
- Octal
- 34340011
- Decimal
- 7,454,729
- Country
- KR
- Tail
- HL8009
- Type
- B77W
- Flights observed
- 100
- Distinct callsigns
- 20
- Country
- KR
- Last broadcast
- 8h ago
Last known position
Country allocation
The ICAO 24-bit address 71C009 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 |
|---|---|---|---|
| KAL938 | Korean Air | 11 | 2026-05-26 |
| KAL902 | Korean Air | 8 | 2026-05-15 |
| KAL937 | Korean Air | 7 | 2026-05-25 |
| KAL645 | Korean Air | 7 | 2026-05-03 |
| KAL033 | Korean Air | 7 | 2026-04-16 |
| KAL901 | Korean Air | 6 | 2026-05-14 |
| KAL034 | Korean Air | 6 | 2026-04-17 |
| KAL085 | Korean Air | 5 | 2026-05-18 |
| KAL005 | - | 5 | 2026-05-23 |
| KAL908 | Korean Air | 4 | 2026-05-23 |
| KAL907 | Korean Air | 4 | 2026-05-22 |
| KAL646 | Korean Air | 4 | 2026-05-03 |
| KAL086 | Korean Air | 4 | 2026-05-19 |
| KAL006 | - | 4 | 2026-05-24 |
| KAL602 | Korean Air | 3 | 2026-05-28 |
| KAL094 | Korean Air | 3 | 2026-05-20 |
| KAL093 | Korean Air | 3 | 2026-05-20 |
| KAL036 | Korean Air | 2 | 2026-05-27 |
| KAL035 | Korean Air | 2 | 2026-05-27 |
| KAL766 | Korean Air | 1 | 2026-05-29 |
Recent flights last 50
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-05-29 | KAL011 | ICN → LAX | May 29, 11:00 UTC | May 29, 21:10 UTC | 10h 10m |
| 2026-05-29 | KAL766 | CTS → ICN | May 29, 06:10 UTC | May 29, 09:00 UTC | 2h 50m |
| 2026-05-29 | KAL765 | ICN → CTS | May 29, 02:05 UTC | May 29, 04:05 UTC | 2h 0m |
| 2026-05-28 | KAL602 | CEB → ICN | May 28, 11:35 UTC | May 28, 21:05 UTC | 9h 30m |
| 2026-05-27 | KAL036 | ATL → ICN | May 27, 17:55 UTC | May 28, 09:00 UTC | 15h 5m |
| 2026-05-27 | KAL035 | ICN → ATL | May 27, 01:59 UTC | May 27, 15:20 UTC | 13h 21m |
| 2026-05-26 | KAL938 | VIE → ICN | May 26, 03:00 UTC | May 26, 03:19 UTC | 20m |
| 2026-05-25 | KAL938 | VIE → ICN | May 25, 16:40 UTC | May 26, 02:04 UTC | 9h 25m |
| 2026-05-25 | KAL937 | ICN → VIE | May 25, 02:00 UTC | May 25, 13:50 UTC | 11h 50m |
| 2026-05-24 | KAL006 | LAS → ICN | May 24, 07:05 UTC | May 24, 19:55 UTC | 12h 50m |
| 2026-05-23 | KAL005 | ICN → LAS | May 23, 12:25 UTC | May 23, 22:55 UTC | 10h 30m |
| 2026-05-23 | KAL908 | LHR → ICN | May 23, 06:40 UTC | May 23, 07:05 UTC | 25m |
| 2026-05-22 | KAL908 | LHR → ICN | May 22, 19:15 UTC | May 22, 22:10 UTC | 2h 55m |
| 2026-05-22 | KAL907 | ICN → LHR | May 22, 02:35 UTC | May 22, 16:05 UTC | 13h 30m |
| 2026-05-20 | KAL094 | IAD → ICN | May 20, 18:05 UTC | May 21, 09:10 UTC | 15h 5m |
| 2026-05-20 | KAL093 | ICN → IAD | May 20, 01:55 UTC | May 20, 14:35 UTC | 12h 41m |
| 2026-05-19 | KAL086 | JFK → ICN | May 19, 05:50 UTC | May 19, 20:10 UTC | 14h 20m |
| 2026-05-18 | KAL085 | ICN → JFK | May 18, 11:05 UTC | May 19, 00:45 UTC | 13h 39m |
| 2026-05-18 | KAL938 | VIE → ICN | May 18, 02:50 UTC | May 18, 03:10 UTC | 20m |
| 2026-05-17 | KAL938 | VIE → ICN | May 17, 16:45 UTC | May 18, 02:00 UTC | 9h 15m |
| 2026-05-17 | KAL937 | ICN → VIE | May 17, 10:30 UTC | May 17, 13:55 UTC | 3h 25m |
| 2026-05-17 | KAL937 | ICN → VIE | May 17, 02:00 UTC | May 17, 02:20 UTC | 20m |
| 2026-05-16 | KAL006 | LAS → ICN | May 16, 07:16 UTC | May 16, 19:35 UTC | 12h 20m |
| 2026-05-15 | KAL005 | - | May 15, 12:15 UTC | May 15, 23:05 UTC | 10h 49m |
| 2026-05-15 | KAL902 | CDG → ICN | May 15, 06:25 UTC | May 15, 06:45 UTC | 20m |
| 2026-05-14 | KAL902 | CDG → ICN | May 14, 18:50 UTC | May 14, 21:35 UTC | 2h 45m |
| 2026-05-14 | KAL901 | ICN → CDG | May 14, 11:01 UTC | May 14, 15:50 UTC | 4h 50m |
| 2026-05-14 | KAL901 | ICN → CDG | May 14, 02:45 UTC | May 14, 02:55 UTC | 10m |
| 2026-05-12 | KAL908 | LHR → ICN | May 12, 18:55 UTC | May 12, 23:25 UTC | 4h 30m |
| 2026-05-12 | KAL907 | ICN → LHR | May 12, 10:55 UTC | May 12, 16:05 UTC | 5h 10m |
| 2026-05-11 | KAL086 | JFK → ICN | May 11, 05:10 UTC | May 11, 19:40 UTC | 14h 30m |
| 2026-05-10 | KAL085 | ICN → JFK | May 10, 11:25 UTC | May 11, 00:30 UTC | 13h 5m |
| 2026-05-09 | KAL094 | IAD → ICN | May 9, 17:35 UTC | May 10, 08:10 UTC | 14h 35m |
| 2026-05-09 | KAL093 | ICN → IAD | May 9, 02:05 UTC | May 9, 14:55 UTC | 12h 50m |
| 2026-05-08 | KAL006 | - | May 8, 07:09 UTC | May 8, 20:00 UTC | 12h 51m |
| 2026-05-07 | KAL005 | - | May 7, 12:20 UTC | May 7, 22:45 UTC | 10h 25m |
| 2026-05-07 | KAL938 | VIE → ICN | May 7, 03:00 UTC | May 7, 03:10 UTC | 10m |
| 2026-05-06 | KAL938 | VIE → ICN | May 6, 16:40 UTC | May 7, 02:00 UTC | 9h 19m |
| 2026-05-06 | KAL937 | ICN → VIE | May 6, 03:15 UTC | May 6, 14:15 UTC | 11h 0m |
| 2026-05-06 | KAL937 | ICN → VIE | May 6, 02:01 UTC | May 6, 02:10 UTC | 10m |
| 2026-05-03 | KAL646 | SIN → ICN | May 3, 20:55 UTC | May 3, 23:30 UTC | 2h 35m |
| 2026-05-03 | KAL645 | PUS → CBO | May 3, 10:15 UTC | May 3, 16:00 UTC | 5h 45m |
| 2026-05-02 | KAL908 | LHR → ICN | May 2, 19:05 UTC | May 3, 06:00 UTC | 10h 54m |
| 2026-05-02 | KAL907 | ICN → LHR | May 2, 03:30 UTC | May 2, 15:40 UTC | 12h 10m |
| 2026-05-02 | KAL907 | ICN → LHR | May 2, 02:15 UTC | May 2, 02:25 UTC | 10m |
| 2026-05-01 | KAL086 | JFK → ICN | May 1, 05:10 UTC | May 1, 20:20 UTC | 15h 10m |
| 2026-04-30 | KAL085 | ICN → JFK | Apr 30, 11:15 UTC | May 1, 00:45 UTC | 13h 30m |
| 2026-04-30 | KAL938 | VIE → ICN | Apr 30, 02:50 UTC | Apr 30, 03:05 UTC | 15m |
| 2026-04-29 | KAL938 | VIE → ICN | Apr 29, 16:45 UTC | Apr 30, 01:50 UTC | 9h 4m |
| 2026-04-29 | KAL937 | ICN → VIE | Apr 29, 03:24 UTC | Apr 29, 14:10 UTC | 10h 46m |
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 HL8009 page for operator, model, and routing details .