sensors Mode-S transponder
71C388
ICAO 24-bit transponder address · allocated to Korea, South
Currently assigned to HL8388 · BOEING 787-9 Dreamliner
- Hex
- 71C388
- Octal
- 34341610
- Decimal
- 7,455,624
- Country
- KR
- Tail
- HL8388
- Type
- B789
- Flights observed
- 85
- Distinct callsigns
- 14
- Country
- KR
- Last broadcast
- 3h ago
Last known position
Country allocation
The ICAO 24-bit address 71C388 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 14 distinct
| Callsign | Airline | Flights | Last seen |
|---|---|---|---|
| APZ101 | Air Premiea | 19 | 2026-05-30 |
| APZ102 | Air Premiea | 16 | 2026-05-28 |
| APZ131 | Air Premiea | 12 | 2026-05-26 |
| APZ132 | Air Premiea | 10 | 2026-05-27 |
| APZ112 | Air Premiea | 10 | 2026-04-22 |
| APZ111 | Air Premiea | 6 | 2026-04-22 |
| APZ621 | Air Premiea | 3 | 2026-05-10 |
| APZ801 | Air Premiea | 2 | 2026-05-11 |
| APZ622 | Air Premiea | 2 | 2026-05-24 |
| APZ802 | Air Premiea | 1 | 2026-05-11 |
| APZ136 | Air Premiea | 1 | 2026-05-20 |
| APZ135 | Air Premiea | 1 | 2026-05-20 |
| APZ104 | Air Premiea | 1 | 2026-05-12 |
| APZ103 | Air Premiea | 1 | 2026-05-11 |
Recent flights last 50
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-05-30 | APZ101 | ICN → LAX | May 30, 04:10 UTC | May 30, 05:45 UTC | 1h 35m |
| 2026-05-28 | APZ102 | LAX → ICN | May 28, 18:20 UTC | May 29, 07:15 UTC | 12h 55m |
| 2026-05-28 | APZ101 | ICN → LAX | May 28, 04:10 UTC | May 28, 15:00 UTC | 10h 50m |
| 2026-05-27 | APZ132 | EWR → ICN | May 27, 05:09 UTC | May 27, 19:45 UTC | 14h 36m |
| 2026-05-26 | APZ131 | ICN → EWR | May 26, 12:50 UTC | May 27, 02:29 UTC | 13h 40m |
| 2026-05-25 | APZ102 | LAX → ICN | May 25, 18:15 UTC | May 26, 06:39 UTC | 12h 25m |
| 2026-05-25 | APZ101 | ICN → LAX | May 25, 04:15 UTC | May 25, 14:55 UTC | 10h 40m |
| 2026-05-24 | APZ622 | DAD → ICN | May 24, 09:10 UTC | May 24, 20:10 UTC | 11h 0m |
| 2026-05-23 | APZ102 | LAX → ICN | May 23, 17:55 UTC | May 24, 06:30 UTC | 12h 35m |
| 2026-05-23 | APZ101 | ICN → LAX | May 23, 04:20 UTC | May 23, 14:45 UTC | 10h 25m |
| 2026-05-22 | APZ132 | EWR → ICN | May 22, 05:40 UTC | May 22, 20:25 UTC | 14h 45m |
| 2026-05-21 | APZ131 | ICN → EWR | May 21, 12:50 UTC | May 22, 01:45 UTC | 12h 55m |
| 2026-05-20 | APZ136 | IAD → ICN | May 20, 17:45 UTC | May 21, 08:35 UTC | 14h 50m |
| 2026-05-20 | APZ135 | ICN → IAD | May 20, 01:25 UTC | May 20, 14:25 UTC | 13h 1m |
| 2026-05-18 | APZ102 | LAX → ICN | May 18, 18:05 UTC | May 19, 06:50 UTC | 12h 44m |
| 2026-05-18 | APZ101 | ICN → LAX | May 18, 04:11 UTC | May 18, 14:45 UTC | 10h 35m |
| 2026-05-17 | APZ622 | DAD → ICN | May 17, 09:10 UTC | May 17, 20:01 UTC | 10h 50m |
| 2026-05-16 | APZ102 | LAX → ICN | May 16, 18:05 UTC | May 17, 06:35 UTC | 12h 30m |
| 2026-05-16 | APZ101 | ICN → LAX | May 16, 04:10 UTC | May 16, 14:46 UTC | 10h 36m |
| 2026-05-15 | APZ132 | EWR → ICN | May 15, 05:00 UTC | May 15, 19:10 UTC | 14h 9m |
| 2026-05-14 | APZ131 | ICN → EWR | May 14, 12:40 UTC | May 15, 02:05 UTC | 13h 25m |
| 2026-05-13 | APZ102 | LAX → ICN | May 13, 18:05 UTC | May 14, 06:20 UTC | 12h 15m |
| 2026-05-13 | APZ101 | ICN → LAX | May 13, 04:20 UTC | May 13, 14:51 UTC | 10h 30m |
| 2026-05-12 | APZ104 | LAX → ICN | May 12, 06:55 UTC | May 12, 18:30 UTC | 11h 35m |
| 2026-05-11 | APZ103 | ICN → LAX | May 11, 13:30 UTC | May 11, 22:35 UTC | 9h 5m |
| 2026-05-11 | APZ802 | HKG → ICN | May 11, 05:45 UTC | May 11, 08:50 UTC | 3h 5m |
| 2026-05-11 | APZ801 | ICN → HKG | May 11, 03:25 UTC | May 11, 03:40 UTC | 15m |
| 2026-05-11 | APZ801 | ICN → HKG | May 11, 00:34 UTC | May 11, 02:50 UTC | 2h 15m |
| 2026-05-10 | APZ621 | ICN → DAD | May 10, 09:15 UTC | May 10, 19:54 UTC | 10h 40m |
| 2026-05-09 | APZ102 | LAX → ICN | May 9, 17:55 UTC | May 10, 06:25 UTC | 12h 30m |
| 2026-05-09 | APZ101 | ICN → LAX | May 9, 04:10 UTC | May 9, 14:20 UTC | 10h 10m |
| 2026-05-07 | APZ102 | LAX → ICN | May 7, 18:00 UTC | May 8, 06:25 UTC | 12h 24m |
| 2026-05-07 | APZ101 | ICN → LAX | May 7, 05:25 UTC | May 7, 14:55 UTC | 9h 30m |
| 2026-05-07 | APZ101 | ICN → LAX | May 7, 04:20 UTC | May 7, 04:40 UTC | 20m |
| 2026-05-06 | APZ132 | EWR → ICN | May 6, 05:00 UTC | May 6, 19:30 UTC | 14h 29m |
| 2026-05-05 | APZ131 | ICN → EWR | May 5, 12:45 UTC | May 6, 01:50 UTC | 13h 5m |
| 2026-05-04 | APZ102 | LAX → ICN | May 4, 18:05 UTC | May 5, 06:30 UTC | 12h 26m |
| 2026-05-04 | APZ101 | ICN → LAX | May 4, 05:15 UTC | May 4, 14:50 UTC | 9h 35m |
| 2026-05-04 | APZ101 | ICN → LAX | May 4, 04:15 UTC | May 4, 04:34 UTC | 20m |
| 2026-05-03 | APZ621 | ICN → DAD | May 3, 09:15 UTC | May 3, 19:50 UTC | 10h 35m |
| 2026-05-02 | APZ102 | LAX → ICN | May 2, 18:20 UTC | May 3, 06:45 UTC | 12h 24m |
| 2026-05-02 | APZ101 | ICN → LAX | May 2, 05:20 UTC | May 2, 14:55 UTC | 9h 35m |
| 2026-05-02 | APZ101 | ICN → LAX | May 2, 04:15 UTC | May 2, 04:35 UTC | 20m |
| 2026-04-30 | APZ102 | LAX → ICN | Apr 30, 18:05 UTC | May 1, 06:35 UTC | 12h 30m |
| 2026-04-30 | APZ101 | ICN → LAX | Apr 30, 04:20 UTC | Apr 30, 14:15 UTC | 9h 55m |
| 2026-04-29 | APZ132 | EWR → ICN | Apr 29, 05:05 UTC | Apr 29, 19:45 UTC | 14h 41m |
| 2026-04-28 | APZ131 | ICN → EWR | Apr 28, 12:45 UTC | Apr 29, 01:45 UTC | 13h 0m |
| 2026-04-27 | APZ102 | LAX → ICN | Apr 27, 17:50 UTC | Apr 28, 06:40 UTC | 12h 50m |
| 2026-04-27 | APZ101 | ICN → LAX | Apr 27, 04:20 UTC | Apr 27, 14:55 UTC | 10h 35m |
| 2026-04-26 | APZ621 | ICN → DAD | Apr 26, 09:10 UTC | Apr 26, 19:55 UTC | 10h 45m |
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 HL8388 page for operator, model, and routing details .