sensors Mode-S transponder
71C516
ICAO 24-bit transponder address · allocated to Korea, South
Currently assigned to HL8516 · BOEING 787-9 Dreamliner
- Hex
- 71C516
- Octal
- 34342426
- Decimal
- 7,456,022
- Country
- KR
- Tail
- HL8516
- Type
- B789
- Flights observed
- 73
- Distinct callsigns
- 16
- Country
- KR
- Last broadcast
- 5h ago
Current position
Country allocation
The ICAO 24-bit address 71C516 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 16 distinct
| Callsign | Airline | Flights | Last seen |
|---|---|---|---|
| APZ131 | Air Premiea | 17 | 2026-05-27 |
| APZ132 | Air Premiea | 11 | 2026-05-28 |
| APZ801 | Air Premiea | 5 | 2026-04-20 |
| APZ111 | Air Premiea | 5 | 2026-05-10 |
| APZ151 | Air Premiea | 4 | 2026-05-18 |
| APZ112 | Air Premiea | 4 | 2026-05-10 |
| APZ802 | Air Premiea | 3 | 2026-04-20 |
| APZ5271 | - | 3 | 2026-04-15 |
| APZ152 | Air Premiea | 3 | 2026-05-19 |
| APZ136 | Air Premiea | 3 | 2026-05-24 |
| APZ135 | Air Premiea | 3 | 2026-05-24 |
| APZ102 | Air Premiea | 3 | 2026-05-29 |
| APZ101 | Air Premiea | 3 | 2026-05-29 |
| APZ736 | Air Premiea | 2 | 2026-05-09 |
| APZ735 | Air Premiea | 2 | 2026-05-09 |
| APZ5272 | - | 2 | 2026-04-16 |
Recent flights last 50
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-05-29 | APZ102 | LAX → ICN | May 29, 17:55 UTC | May 29, 23:40 UTC | 5h 45m |
| 2026-05-29 | APZ101 | ICN → LAX | May 29, 04:15 UTC | May 29, 14:55 UTC | 10h 40m |
| 2026-05-28 | APZ132 | EWR → ICN | May 28, 05:15 UTC | May 28, 20:00 UTC | 14h 45m |
| 2026-05-27 | APZ131 | ICN → EWR | May 27, 12:55 UTC | May 28, 02:05 UTC | 13h 10m |
| 2026-05-26 | APZ132 | EWR → ICN | May 26, 07:29 UTC | May 26, 21:59 UTC | 14h 30m |
| 2026-05-25 | APZ131 | ICN → EWR | May 25, 12:50 UTC | May 26, 02:35 UTC | 13h 44m |
| 2026-05-24 | APZ136 | IAD → ICN | May 24, 17:40 UTC | May 25, 07:30 UTC | 13h 50m |
| 2026-05-24 | APZ135 | ICN → IAD | May 24, 01:15 UTC | May 24, 14:20 UTC | 13h 5m |
| 2026-05-23 | APZ132 | EWR → ICN | May 23, 05:15 UTC | May 23, 19:35 UTC | 14h 20m |
| 2026-05-22 | APZ131 | ICN → EWR | May 22, 12:40 UTC | May 23, 01:45 UTC | 13h 5m |
| 2026-05-21 | APZ102 | LAX → ICN | May 21, 21:50 UTC | May 22, 10:25 UTC | 12h 35m |
| 2026-05-21 | APZ101 | ICN → LAX | May 21, 04:20 UTC | May 21, 14:40 UTC | 10h 20m |
| 2026-05-20 | APZ132 | EWR → ICN | May 20, 05:25 UTC | May 20, 19:55 UTC | 14h 30m |
| 2026-05-19 | APZ131 | ICN → EWR | May 19, 12:30 UTC | May 20, 01:45 UTC | 13h 15m |
| 2026-05-19 | APZ152 | HNL → ICN | May 19, 00:40 UTC | May 19, 10:00 UTC | 9h 20m |
| 2026-05-18 | APZ151 | ICN → HNL | May 18, 13:45 UTC | May 18, 21:55 UTC | 8h 9m |
| 2026-05-17 | APZ132 | EWR → ICN | May 17, 05:30 UTC | May 17, 19:35 UTC | 14h 5m |
| 2026-05-16 | APZ131 | ICN → EWR | May 16, 12:45 UTC | May 17, 02:05 UTC | 13h 20m |
| 2026-05-10 | APZ112 | SFO → ICN | May 10, 22:45 UTC | May 11, 10:20 UTC | 11h 35m |
| 2026-05-10 | APZ111 | ICN → SFO | May 10, 09:55 UTC | May 10, 19:05 UTC | 9h 10m |
| 2026-05-10 | APZ111 | ICN → SFO | May 10, 09:15 UTC | May 10, 09:24 UTC | 10m |
| 2026-05-09 | APZ736 | NRT → ICN | May 9, 09:10 UTC | May 9, 11:15 UTC | 2h 5m |
| 2026-05-09 | APZ735 | ICN → NRT | May 9, 05:20 UTC | May 9, 07:10 UTC | 1h 50m |
| 2026-05-08 | APZ132 | EWR → ICN | May 8, 05:05 UTC | May 8, 19:40 UTC | 14h 35m |
| 2026-05-07 | APZ131 | ICN → EWR | May 7, 13:15 UTC | May 8, 02:24 UTC | 13h 9m |
| 2026-05-06 | APZ136 | IAD → ICN | May 6, 17:35 UTC | May 7, 08:20 UTC | 14h 45m |
| 2026-05-06 | APZ135 | ICN → IAD | May 6, 01:20 UTC | May 6, 14:25 UTC | 13h 5m |
| 2026-05-05 | APZ132 | EWR → ICN | May 5, 05:05 UTC | May 5, 19:55 UTC | 14h 50m |
| 2026-05-04 | APZ131 | ICN → EWR | May 4, 12:40 UTC | May 5, 01:25 UTC | 12h 46m |
| 2026-05-04 | APZ112 | SFO → ICN | May 4, 10:25 UTC | May 4, 10:45 UTC | 20m |
| 2026-05-03 | APZ112 | SFO → ICN | May 3, 22:54 UTC | May 4, 09:15 UTC | 10h 20m |
| 2026-05-03 | APZ111 | ICN → SFO | May 3, 10:30 UTC | May 3, 19:50 UTC | 9h 20m |
| 2026-05-03 | APZ111 | ICN → SFO | May 3, 09:25 UTC | May 3, 09:50 UTC | 25m |
| 2026-05-02 | APZ736 | NRT → ICN | May 2, 09:10 UTC | May 2, 11:10 UTC | 2h 0m |
| 2026-05-02 | APZ735 | ICN → NRT | May 2, 05:05 UTC | May 2, 06:55 UTC | 1h 50m |
| 2026-05-01 | APZ132 | EWR → ICN | May 1, 05:05 UTC | May 1, 20:05 UTC | 15h 0m |
| 2026-04-30 | APZ131 | ICN → EWR | Apr 30, 13:00 UTC | May 1, 02:15 UTC | 13h 15m |
| 2026-04-29 | APZ136 | IAD → ICN | Apr 29, 17:30 UTC | Apr 30, 08:30 UTC | 14h 59m |
| 2026-04-29 | APZ135 | ICN → IAD | Apr 29, 01:20 UTC | Apr 29, 14:15 UTC | 12h 56m |
| 2026-04-27 | APZ112 | SFO → ICN | Apr 27, 22:55 UTC | Apr 28, 11:15 UTC | 12h 20m |
| 2026-04-27 | APZ111 | ICN → SFO | Apr 27, 09:25 UTC | Apr 27, 19:35 UTC | 10h 10m |
| 2026-04-26 | APZ102 | LAX → ICN | Apr 26, 17:50 UTC | Apr 27, 06:40 UTC | 12h 50m |
| 2026-04-26 | APZ101 | ICN → LAX | Apr 26, 04:10 UTC | Apr 26, 14:40 UTC | 10h 30m |
| 2026-04-25 | APZ132 | EWR → ICN | Apr 25, 07:10 UTC | Apr 25, 21:35 UTC | 14h 25m |
| 2026-04-24 | APZ131 | ICN → EWR | Apr 24, 12:45 UTC | Apr 25, 02:05 UTC | 13h 20m |
| 2026-04-23 | APZ132 | EWR → ICN | Apr 23, 05:20 UTC | Apr 23, 20:20 UTC | 14h 59m |
| 2026-04-22 | APZ131 | ICN → EWR | Apr 22, 13:45 UTC | Apr 23, 01:30 UTC | 11h 45m |
| 2026-04-22 | APZ131 | ICN → EWR | Apr 22, 12:45 UTC | Apr 22, 13:05 UTC | 20m |
| 2026-04-20 | APZ802 | HKG → ICN | Apr 20, 05:40 UTC | Apr 20, 08:35 UTC | 2h 55m |
| 2026-04-20 | APZ801 | ICN → HKG | Apr 20, 03:30 UTC | Apr 20, 03:50 UTC | 20m |
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 HL8516 page for operator, model, and routing details .