sensors Mode-S transponder
71BA05
ICAO 24-bit transponder address · allocated to Korea, South
Currently assigned to HL7205 · BOEING 777-300ER
- Hex
- 71BA05
- Octal
- 34335005
- Decimal
- 7,453,189
- Country
- KR
- Tail
- HL7205
- Type
- B77W
- Flights observed
- 96
- Distinct callsigns
- 20
- Country
- KR
- Last broadcast
- 46m ago
Last known position
Country allocation
The ICAO 24-bit address 71BA05 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 |
|---|---|---|---|
| KAL908 | Korean Air | 11 | 2026-05-19 |
| KAL907 | Korean Air | 9 | 2026-05-18 |
| KAL902 | Korean Air | 8 | 2026-05-29 |
| KAL901 | Korean Air | 8 | 2026-05-29 |
| KAL646 | Korean Air | 8 | 2026-05-08 |
| KAL645 | Korean Air | 8 | 2026-05-08 |
| KAL035 | Korean Air | 7 | 2026-05-23 |
| KAL036 | Korean Air | 6 | 2026-05-23 |
| KAL085 | Korean Air | 5 | 2026-05-19 |
| KAL086 | Korean Air | 4 | 2026-05-20 |
| KAL938 | Korean Air | 3 | 2026-05-12 |
| KAL033 | Korean Air | 3 | 2026-05-27 |
| KAL937 | Korean Air | 2 | 2026-05-11 |
| KAL437 | Korean Air | 2 | 2026-05-12 |
| KAL094 | Korean Air | 2 | 2026-05-25 |
| KAL093 | Korean Air | 2 | 2026-05-25 |
| KAL034 | Korean Air | 2 | 2026-05-27 |
| KAL006 | - | 2 | 2026-05-15 |
| KAL005 | - | 2 | 2026-05-14 |
| KAL874 | - | 1 | 2026-04-15 |
Recent flights last 50
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-05-29 | KAL902 | CDG → ICN | May 29, 19:25 UTC | May 30, 05:15 UTC | 9h 50m |
| 2026-05-29 | KAL901 | ICN → CDG | May 29, 04:20 UTC | May 29, 16:40 UTC | 12h 20m |
| 2026-05-29 | KAL901 | ICN → CDG | May 29, 03:05 UTC | May 29, 03:15 UTC | 10m |
| 2026-05-27 | KAL034 | ATL → ICN | May 27, 16:20 UTC | May 28, 07:15 UTC | 14h 55m |
| 2026-05-27 | KAL033 | ICN → ATL | May 27, 00:10 UTC | May 27, 13:30 UTC | 13h 21m |
| 2026-05-25 | KAL094 | IAD → ICN | May 25, 18:05 UTC | May 26, 08:45 UTC | 14h 39m |
| 2026-05-25 | KAL093 | ICN → IAD | May 25, 01:55 UTC | May 25, 15:30 UTC | 13h 35m |
| 2026-05-23 | KAL036 | ATL → ICN | May 23, 17:50 UTC | May 24, 08:10 UTC | 14h 20m |
| 2026-05-23 | KAL035 | ICN → ATL | May 23, 02:15 UTC | May 23, 14:50 UTC | 12h 34m |
| 2026-05-21 | KAL094 | IAD → ICN | May 21, 17:40 UTC | May 22, 08:20 UTC | 14h 40m |
| 2026-05-21 | KAL093 | ICN → IAD | May 21, 01:50 UTC | May 21, 14:40 UTC | 12h 50m |
| 2026-05-20 | KAL086 | JFK → ICN | May 20, 05:30 UTC | May 20, 20:15 UTC | 14h 45m |
| 2026-05-19 | KAL085 | ICN → JFK | May 19, 11:20 UTC | May 20, 00:35 UTC | 13h 15m |
| 2026-05-19 | KAL908 | LHR → ICN | May 19, 06:40 UTC | May 19, 07:05 UTC | 25m |
| 2026-05-18 | KAL908 | LHR → ICN | May 18, 19:05 UTC | May 19, 05:50 UTC | 10h 45m |
| 2026-05-18 | KAL907 | ICN → LHR | May 18, 03:25 UTC | May 18, 16:00 UTC | 12h 35m |
| 2026-05-18 | KAL907 | ICN → LHR | May 18, 02:15 UTC | May 18, 02:35 UTC | 20m |
| 2026-05-17 | KAL902 | CDG → ICN | May 17, 06:35 UTC | May 17, 06:55 UTC | 20m |
| 2026-05-16 | KAL902 | CDG → ICN | May 16, 19:00 UTC | May 17, 00:00 UTC | 5h 0m |
| 2026-05-16 | KAL901 | ICN → CDG | May 16, 11:25 UTC | May 16, 16:10 UTC | 4h 45m |
| 2026-05-16 | KAL901 | ICN → CDG | May 16, 02:55 UTC | May 16, 03:10 UTC | 15m |
| 2026-05-15 | KAL006 | LAS → ICN | May 15, 07:10 UTC | May 15, 19:20 UTC | 12h 9m |
| 2026-05-14 | KAL005 | ICN → LAS | May 14, 12:35 UTC | May 14, 23:10 UTC | 10h 35m |
| 2026-05-14 | KAL908 | LHR → ICN | May 14, 07:25 UTC | May 14, 07:45 UTC | 20m |
| 2026-05-13 | KAL908 | LHR → ICN | May 13, 20:00 UTC | May 14, 00:50 UTC | 4h 50m |
| 2026-05-13 | KAL907 | ICN → LHR | May 13, 10:45 UTC | May 13, 16:10 UTC | 5h 25m |
| 2026-05-12 | KAL438 | CGK → ICN | May 12, 16:50 UTC | May 12, 21:55 UTC | 5h 5m |
| 2026-05-12 | KAL437 | ICN → CGK | May 12, 12:40 UTC | May 12, 12:50 UTC | 10m |
| 2026-05-12 | KAL437 | ICN → CGK | May 12, 06:35 UTC | May 12, 11:15 UTC | 4h 40m |
| 2026-05-12 | KAL938 | VIE → ICN | May 12, 03:05 UTC | May 12, 03:15 UTC | 10m |
| 2026-05-11 | KAL938 | VIE → ICN | May 11, 16:40 UTC | May 11, 20:05 UTC | 3h 25m |
| 2026-05-11 | KAL937 | ICN → VIE | May 11, 02:10 UTC | May 11, 14:15 UTC | 12h 5m |
| 2026-05-09 | KAL908 | LHR → ICN | May 9, 18:55 UTC | May 9, 23:20 UTC | 4h 25m |
| 2026-05-09 | KAL907 | ICN → LHR | May 9, 03:40 UTC | May 9, 16:15 UTC | 12h 35m |
| 2026-05-08 | KAL646 | SIN → ICN | May 8, 21:20 UTC | May 9, 00:05 UTC | 2h 45m |
| 2026-05-08 | KAL645 | PUS → CBO | May 8, 10:25 UTC | May 8, 12:55 UTC | 2h 30m |
| 2026-05-07 | KAL034 | ATL → ICN | May 7, 16:10 UTC | May 8, 07:24 UTC | 15h 15m |
| 2026-05-07 | KAL033 | ICN → ATL | May 7, 01:20 UTC | May 7, 13:20 UTC | 12h 0m |
| 2026-05-07 | KAL033 | ICN → ATL | May 7, 00:10 UTC | May 7, 00:35 UTC | 25m |
| 2026-05-06 | KAL036 | ATL → ICN | May 6, 08:25 UTC | May 6, 09:00 UTC | 35m |
| 2026-05-05 | KAL036 | ATL → ICN | May 5, 17:40 UTC | May 6, 07:25 UTC | 13h 45m |
| 2026-05-05 | KAL035 | ICN → ATL | May 5, 02:10 UTC | May 5, 14:45 UTC | 12h 35m |
| 2026-05-04 | KAL908 | LHR → ICN | May 4, 07:30 UTC | May 4, 07:45 UTC | 15m |
| 2026-05-03 | KAL908 | LHR → ICN | May 3, 19:30 UTC | May 4, 06:35 UTC | 11h 5m |
| 2026-05-03 | KAL907 | ICN → LHR | May 3, 03:55 UTC | May 3, 15:40 UTC | 11h 45m |
| 2026-05-02 | KAL086 | JFK → ICN | May 2, 05:10 UTC | May 2, 20:00 UTC | 14h 50m |
| 2026-05-01 | KAL085 | ICN → JFK | May 1, 12:20 UTC | May 2, 00:50 UTC | 12h 30m |
| 2026-05-01 | KAL085 | ICN → JFK | May 1, 11:15 UTC | May 1, 11:35 UTC | 20m |
| 2026-04-30 | KAL908 | LHR → ICN | Apr 30, 19:05 UTC | May 1, 05:40 UTC | 10h 35m |
| 2026-04-30 | KAL907 | ICN → LHR | Apr 30, 03:30 UTC | Apr 30, 15:55 UTC | 12h 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 HL7205 page for operator, model, and routing details .