sensors Mode-S transponder
71BF82
ICAO 24-bit transponder address · allocated to Korea, South
Currently assigned to HL7782 · BOEING 777-300ER
- Hex
- 71BF82
- Octal
- 34337602
- Decimal
- 7,454,594
- Country
- KR
- Tail
- HL7782
- Type
- B77W
- Flights observed
- 205
- Distinct callsigns
- 20
- Country
- KR
- Last broadcast
- Jul 26, 22:10 UTC
Last known position
Country allocation
The ICAO 24-bit address 71BF82 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 |
|---|---|---|---|
| KAL946 | - | 25 | 2026-07-16 |
| KAL945 | - | 21 | 2026-07-15 |
| KAL926 | Korean Air | 15 | 2026-07-26 |
| KAL651 | Korean Air | 14 | 2026-07-26 |
| KAL652 | Korean Air | 13 | 2026-07-26 |
| KAL037 | - | 13 | 2026-07-07 |
| KAL925 | Korean Air | 12 | 2026-07-25 |
| KAL038 | Korean Air | 12 | 2026-07-07 |
| KAL476 | - | 7 | 2026-07-20 |
| KAL437 | Korean Air | 6 | 2026-05-21 |
| KAL475 | - | 5 | 2026-07-11 |
| KAL438 | Korean Air | 5 | 2026-05-21 |
| KAL092 | Korean Air | 4 | 2026-07-23 |
| KAL091 | Korean Air | 4 | 2026-07-23 |
| KAL787 | Korean Air | 3 | 2026-05-30 |
| KAL658 | - | 3 | 2026-07-21 |
| KAL657 | Korean Air | 3 | 2026-07-21 |
| KAL643 | Korean Air | 3 | 2026-05-12 |
| KAL9976 | - | 2 | 2026-07-02 |
| KAL9975 | - | 2 | 2026-07-01 |
Recent flights last 50
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-07-26 | KAL652 | BKK → ICN | Jul 26, 17:05 UTC | Jul 26, 22:10 UTC | 5h 5m |
| 2026-07-26 | KAL651 | ICN → BKK | Jul 26, 09:40 UTC | Jul 26, 14:35 UTC | 4h 55m |
| 2026-07-26 | KAL926 | AMS → ICN | Jul 26, 06:50 UTC | Jul 26, 07:15 UTC | 25m |
| 2026-07-25 | KAL926 | AMS → ICN | Jul 25, 19:45 UTC | Jul 25, 23:45 UTC | 4h 0m |
| 2026-07-25 | KAL925 | ICN → AMS | Jul 25, 03:45 UTC | Jul 25, 16:30 UTC | 12h 45m |
| 2026-07-23 | KAL092 | BOS → ICN | Jul 23, 17:20 UTC | Jul 24, 08:00 UTC | 14h 40m |
| 2026-07-23 | KAL091 | ICN → BOS | Jul 23, 01:05 UTC | Jul 23, 14:20 UTC | 13h 15m |
| 2026-07-22 | KAL652 | BKK → ICN | Jul 22, 17:00 UTC | Jul 22, 21:50 UTC | 4h 50m |
| 2026-07-22 | KAL651 | ICN → BKK | Jul 22, 11:15 UTC | Jul 22, 14:45 UTC | 3h 30m |
| 2026-07-21 | KAL658 | - | Jul 21, 14:55 UTC | Jul 21, 19:50 UTC | 4h 55m |
| 2026-07-21 | KAL657 | ICN → BKK | Jul 21, 01:10 UTC | Jul 21, 06:05 UTC | 4h 55m |
| 2026-07-20 | KAL476 | - | Jul 20, 10:30 UTC | Jul 20, 22:00 UTC | 11h 30m |
| 2026-07-20 | KAL926 | - | Jul 20, 06:50 UTC | Jul 20, 07:15 UTC | 25m |
| 2026-07-19 | KAL926 | - | Jul 19, 20:00 UTC | Jul 19, 22:35 UTC | 2h 35m |
| 2026-07-19 | KAL925 | - | Jul 19, 04:25 UTC | Jul 19, 16:25 UTC | 12h 0m |
| 2026-07-19 | KAL925 | - | Jul 19, 03:10 UTC | Jul 19, 03:40 UTC | 30m |
| 2026-07-17 | KAL092 | BOS → ICN | Jul 17, 17:20 UTC | Jul 18, 07:25 UTC | 14h 6m |
| 2026-07-17 | KAL091 | ICN → BOS | Jul 17, 01:00 UTC | Jul 17, 14:04 UTC | 13h 5m |
| 2026-07-16 | KAL652 | - | Jul 16, 17:14 UTC | Jul 16, 22:00 UTC | 4h 45m |
| 2026-07-16 | KAL651 | - | Jul 16, 14:05 UTC | Jul 16, 14:20 UTC | 15m |
| 2026-07-16 | KAL651 | - | Jul 16, 09:20 UTC | Jul 16, 11:54 UTC | 2h 35m |
| 2026-07-16 | KAL946 | - | Jul 16, 04:20 UTC | Jul 16, 04:40 UTC | 20m |
| 2026-07-15 | KAL946 | - | Jul 15, 18:10 UTC | Jul 16, 03:35 UTC | 9h 25m |
| 2026-07-15 | KAL945 | - | Jul 15, 03:25 UTC | Jul 15, 15:00 UTC | 11h 35m |
| 2026-07-15 | KAL945 | - | Jul 15, 02:15 UTC | Jul 15, 02:30 UTC | 15m |
| 2026-07-14 | KAL658 | - | Jul 14, 17:50 UTC | Jul 14, 20:30 UTC | 2h 40m |
| 2026-07-14 | KAL658 | - | Jul 14, 15:45 UTC | Jul 14, 15:55 UTC | 10m |
| 2026-07-14 | KAL657 | - | Jul 14, 05:50 UTC | Jul 14, 06:25 UTC | 35m |
| 2026-07-14 | KAL657 | - | Jul 14, 01:20 UTC | Jul 14, 04:00 UTC | 2h 40m |
| 2026-07-13 | KAL926 | - | Jul 13, 07:01 UTC | Jul 13, 07:25 UTC | 25m |
| 2026-07-12 | KAL926 | - | Jul 12, 20:20 UTC | Jul 13, 06:10 UTC | 9h 50m |
| 2026-07-12 | KAL925 | - | Jul 12, 04:25 UTC | Jul 12, 16:20 UTC | 11h 55m |
| 2026-07-12 | KAL925 | - | Jul 12, 03:20 UTC | Jul 12, 03:35 UTC | 15m |
| 2026-07-11 | KAL475 | ICN → ICN | Jul 11, 13:00 UTC | Jul 12, 00:45 UTC | 11h 45m |
| 2026-07-11 | KAL926 | - | Jul 11, 06:40 UTC | Jul 11, 07:10 UTC | 30m |
| 2026-07-10 | KAL926 | - | Jul 10, 20:00 UTC | Jul 11, 05:50 UTC | 9h 50m |
| 2026-07-10 | KAL925 | - | Jul 10, 03:10 UTC | Jul 10, 16:35 UTC | 13h 25m |
| 2026-07-08 | KAL652 | BKK → ICN | Jul 8, 17:10 UTC | Jul 8, 22:05 UTC | 4h 55m |
| 2026-07-08 | KAL651 | ICN → BKK | Jul 8, 09:20 UTC | Jul 8, 14:50 UTC | 5h 30m |
| 2026-07-07 | KAL038 | ORD → ICN | Jul 7, 18:05 UTC | Jul 8, 07:25 UTC | 13h 20m |
| 2026-07-07 | KAL037 | ICN → ORD | Jul 7, 02:10 UTC | Jul 7, 14:35 UTC | 12h 25m |
| 2026-07-06 | KAL476 | - | Jul 6, 10:35 UTC | Jul 6, 22:00 UTC | 11h 25m |
| 2026-07-05 | KAL092 | BOS → ICN | Jul 5, 17:25 UTC | Jul 6, 08:05 UTC | 14h 40m |
| 2026-07-05 | KAL091 | ICN → BOS | Jul 5, 00:50 UTC | Jul 5, 14:00 UTC | 13h 10m |
| 2026-07-04 | KAL476 | ICN → ICN | Jul 4, 10:50 UTC | Jul 4, 22:10 UTC | 11h 20m |
| 2026-07-04 | KAL946 | - | Jul 4, 04:45 UTC | Jul 4, 05:10 UTC | 25m |
| 2026-07-03 | KAL946 | - | Jul 3, 18:15 UTC | Jul 4, 04:00 UTC | 9h 45m |
| 2026-07-03 | KAL945 | - | Jul 3, 03:30 UTC | Jul 3, 14:50 UTC | 11h 20m |
| 2026-07-03 | KAL945 | - | Jul 3, 02:15 UTC | Jul 3, 02:35 UTC | 20m |
| 2026-07-02 | KAL9976 | - | Jul 2, 10:15 UTC | Jul 2, 10:40 UTC | 25m |
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 HL7782 page for operator, model, and routing details .