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
- 153
- Distinct callsigns
- 20
- Country
- KR
- Last broadcast
- Jul 26, 21:55 UTC
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 20 distinct
| Callsign | Airline | Flights | Last seen |
|---|---|---|---|
| APZ101 | Air Premiea | 37 | 2026-07-24 |
| APZ102 | Air Premiea | 35 | 2026-07-24 |
| APZ131 | Air Premiea | 21 | 2026-07-26 |
| APZ132 | - | 16 | 2026-07-15 |
| APZ112 | - | 11 | 2026-06-26 |
| APZ111 | - | 7 | 2026-06-26 |
| APZ621 | Air Premiea | 5 | 2026-06-14 |
| APZ622 | Air Premiea | 3 | 2026-05-31 |
| APZ136 | - | 3 | 2026-06-28 |
| APZ135 | - | 3 | 2026-06-28 |
| APZ801 | Air Premiea | 2 | 2026-05-11 |
| APZ152 | - | 2 | 2026-06-30 |
| APZ802 | Air Premiea | 1 | 2026-05-11 |
| APZ736 | - | 1 | 2026-07-23 |
| APZ735 | Air Premiea | 1 | 2026-07-23 |
| APZ602 | Air Premiea | 1 | 2026-06-09 |
| APZ601 | Air Premiea | 1 | 2026-06-09 |
| APZ151 | - | 1 | 2026-06-29 |
| APZ104 | Air Premiea | 1 | 2026-05-12 |
| APZ103 | Air Premiea | 1 | 2026-05-11 |
Recent flights last 50
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-07-26 | APZ131 | ICN → EWR | Jul 26, 12:40 UTC | Jul 26, 21:55 UTC | 9h 15m |
| 2026-07-24 | APZ102 | LAX → ICN | Jul 24, 18:05 UTC | Jul 25, 05:40 UTC | 11h 35m |
| 2026-07-24 | APZ101 | ICN → LAX | Jul 24, 04:20 UTC | Jul 24, 15:40 UTC | 11h 20m |
| 2026-07-23 | APZ736 | NRT → ICN | Jul 23, 09:25 UTC | Jul 23, 11:15 UTC | 1h 50m |
| 2026-07-23 | APZ735 | ICN → NRT | Jul 23, 05:45 UTC | Jul 23, 07:50 UTC | 2h 5m |
| 2026-07-17 | APZ131 | - | Jul 17, 12:45 UTC | Jul 17, 16:00 UTC | 3h 15m |
| 2026-07-16 | APZ102 | LAX → ICN | Jul 16, 18:05 UTC | Jul 17, 06:10 UTC | 12h 5m |
| 2026-07-16 | APZ101 | - | Jul 16, 04:25 UTC | Jul 16, 15:40 UTC | 11h 15m |
| 2026-07-15 | APZ132 | EWR → ICN | Jul 15, 05:15 UTC | Jul 15, 19:50 UTC | 14h 35m |
| 2026-07-14 | APZ131 | - | Jul 14, 13:50 UTC | Jul 15, 02:20 UTC | 12h 29m |
| 2026-07-14 | APZ131 | - | Jul 14, 12:55 UTC | Jul 14, 13:15 UTC | 20m |
| 2026-07-13 | APZ102 | - | Jul 13, 18:20 UTC | Jul 14, 06:15 UTC | 11h 55m |
| 2026-07-13 | APZ101 | ICN → LAX | Jul 13, 04:20 UTC | Jul 13, 15:45 UTC | 11h 25m |
| 2026-07-11 | APZ102 | - | Jul 11, 18:15 UTC | Jul 12, 06:10 UTC | 11h 55m |
| 2026-07-11 | APZ101 | - | Jul 11, 04:25 UTC | Jul 11, 15:30 UTC | 11h 5m |
| 2026-07-09 | APZ102 | - | Jul 9, 18:05 UTC | Jul 10, 06:30 UTC | 12h 25m |
| 2026-07-09 | APZ101 | ICN → LAX | Jul 9, 04:30 UTC | Jul 9, 15:20 UTC | 10h 50m |
| 2026-07-08 | APZ132 | EWR → ICN | Jul 8, 05:20 UTC | Jul 8, 20:00 UTC | 14h 40m |
| 2026-07-07 | APZ131 | ICN → EWR | Jul 7, 12:40 UTC | Jul 8, 02:05 UTC | 13h 25m |
| 2026-07-06 | APZ102 | - | Jul 6, 18:10 UTC | Jul 7, 06:30 UTC | 12h 20m |
| 2026-07-06 | APZ101 | - | Jul 6, 04:35 UTC | Jul 6, 15:15 UTC | 10h 40m |
| 2026-07-04 | APZ102 | - | Jul 4, 17:55 UTC | Jul 5, 06:10 UTC | 12h 15m |
| 2026-07-04 | APZ101 | - | Jul 4, 04:20 UTC | Jul 4, 15:25 UTC | 11h 5m |
| 2026-07-02 | APZ102 | - | Jul 2, 18:05 UTC | Jul 3, 06:25 UTC | 12h 20m |
| 2026-07-02 | APZ101 | - | Jul 2, 04:25 UTC | Jul 2, 14:40 UTC | 10h 15m |
| 2026-07-01 | APZ132 | - | Jul 1, 05:50 UTC | Jul 1, 20:15 UTC | 14h 25m |
| 2026-06-30 | APZ131 | ICN → EWR | Jun 30, 12:35 UTC | Jul 1, 02:20 UTC | 13h 45m |
| 2026-06-30 | APZ152 | - | Jun 30, 07:40 UTC | Jun 30, 10:15 UTC | 2h 35m |
| 2026-06-30 | APZ152 | - | Jun 30, 00:49 UTC | Jun 30, 01:00 UTC | 10m |
| 2026-06-29 | APZ151 | - | Jun 29, 13:39 UTC | Jun 29, 21:39 UTC | 8h 0m |
| 2026-06-28 | APZ136 | IAD → ICN | Jun 28, 18:05 UTC | Jun 29, 08:44 UTC | 14h 40m |
| 2026-06-28 | APZ135 | ICN → IAD | Jun 28, 01:19 UTC | Jun 28, 14:19 UTC | 13h 0m |
| 2026-06-26 | APZ112 | - | Jun 26, 22:55 UTC | Jun 27, 11:09 UTC | 12h 15m |
| 2026-06-26 | APZ111 | ICN → SFO | Jun 26, 09:10 UTC | Jun 26, 19:00 UTC | 9h 50m |
| 2026-06-25 | APZ102 | - | Jun 25, 17:54 UTC | Jun 26, 06:25 UTC | 12h 30m |
| 2026-06-25 | APZ101 | - | Jun 25, 04:20 UTC | Jun 25, 14:29 UTC | 10h 10m |
| 2026-06-24 | APZ132 | EWR → ICN | Jun 24, 05:15 UTC | Jun 24, 19:39 UTC | 14h 25m |
| 2026-06-23 | APZ131 | ICN → EWR | Jun 23, 12:45 UTC | Jun 24, 02:09 UTC | 13h 25m |
| 2026-06-22 | APZ102 | - | Jun 22, 18:04 UTC | Jun 23, 06:09 UTC | 12h 5m |
| 2026-06-22 | APZ101 | - | Jun 22, 04:15 UTC | Jun 22, 14:40 UTC | 10h 25m |
| 2026-06-20 | APZ102 | - | Jun 20, 17:59 UTC | Jun 21, 05:54 UTC | 11h 55m |
| 2026-06-20 | APZ101 | - | Jun 20, 04:39 UTC | Jun 20, 15:24 UTC | 10h 45m |
| 2026-06-18 | APZ102 | - | Jun 18, 18:15 UTC | Jun 19, 06:10 UTC | 11h 54m |
| 2026-06-18 | APZ101 | - | Jun 18, 04:15 UTC | Jun 18, 15:05 UTC | 10h 50m |
| 2026-06-17 | APZ132 | - | Jun 17, 05:05 UTC | Jun 17, 19:05 UTC | 14h 0m |
| 2026-06-16 | APZ131 | ICN → EWR | Jun 16, 12:45 UTC | Jun 17, 02:00 UTC | 13h 16m |
| 2026-06-15 | APZ136 | IAD → ICN | Jun 15, 17:40 UTC | Jun 16, 08:15 UTC | 14h 35m |
| 2026-06-15 | APZ135 | ICN → IAD | Jun 15, 01:25 UTC | Jun 15, 14:30 UTC | 13h 5m |
| 2026-06-14 | APZ621 | ICN → DAD | Jun 14, 09:10 UTC | Jun 14, 20:00 UTC | 10h 50m |
| 2026-06-13 | APZ102 | - | Jun 13, 18:15 UTC | Jun 14, 06:20 UTC | 12h 5m |
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 .