Apparatus

Try JFK, AAL1290, BAW, or N225AN.

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
No current signal · last broadcast Jul 26, 18:50 UTC
Flights observed
150
Distinct callsigns
20
Country
KR
Last broadcast
Jul 26, 18:50 UTC

Last known position

Most recent position reported by Mode-S 71C516.

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 20 distinct

Callsign Airline Flights Last seen
APZ131 - 28 2026-07-21
APZ132 Air Premiea 22 2026-07-22
APZ136 Air Premiea 12 2026-07-26
APZ135 Air Premiea 12 2026-07-26
APZ801 - 8 2026-07-12
APZ151 - 7 2026-06-22
APZ102 Air Premiea 7 2026-07-23
APZ101 Air Premiea 7 2026-07-23
APZ736 Air Premiea 6 2026-07-25
APZ735 Air Premiea 6 2026-07-25
APZ152 - 6 2026-06-23
APZ111 - 6 2026-06-21
APZ802 - 5 2026-07-12
APZ112 - 5 2026-06-21
APZ5271 - 3 2026-04-15
APZ5272 - 2 2026-04-16
APZ104 - 2 2026-07-09
APZ103 - 2 2026-07-08
APZ602 Air Premiea 1 2026-06-15
APZ601 Air Premiea 1 2026-06-15

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 APZ136 IAD → ICN Jul 26, 17:35 UTCJul 26, 18:50 UTC1h 15m
2026-07-26 APZ135 ICN → IAD Jul 26, 01:30 UTCJul 26, 14:40 UTC13h 11m
2026-07-25 APZ736 NRT → ICN Jul 25, 09:10 UTCJul 25, 11:00 UTC1h 50m
2026-07-25 APZ735 ICN → NRT Jul 25, 05:30 UTCJul 25, 07:25 UTC1h 55m
2026-07-23 APZ102 LAX → ICN Jul 23, 18:00 UTCJul 24, 05:30 UTC11h 30m
2026-07-23 APZ101 ICN → LAX Jul 23, 04:25 UTCJul 23, 15:40 UTC11h 15m
2026-07-22 APZ132 EWR → ICN Jul 22, 11:10 UTCJul 22, 20:05 UTC8h 55m
2026-07-22 APZ132 EWR → ICN Jul 22, 05:10 UTCJul 22, 05:25 UTC15m
2026-07-21 APZ131 ICN → EWR Jul 21, 12:50 UTCJul 22, 02:00 UTC13h 10m
2026-07-20 APZ132 EWR → ICN Jul 20, 05:15 UTCJul 20, 19:50 UTC14h 35m
2026-07-19 APZ131 - Jul 19, 12:40 UTCJul 20, 02:00 UTC13h 20m
2026-07-18 APZ102 LAX → ICN Jul 18, 21:05 UTCJul 19, 08:40 UTC11h 35m
2026-07-18 APZ101 ICN → LAX Jul 18, 07:20 UTCJul 18, 18:40 UTC11h 20m
2026-07-17 APZ132 EWR → ICN Jul 17, 05:20 UTCJul 17, 19:49 UTC14h 30m
2026-07-16 APZ131 - Jul 16, 12:44 UTCJul 17, 02:20 UTC13h 35m
2026-07-15 APZ136 IAD → ICN Jul 15, 17:35 UTCJul 16, 08:00 UTC14h 25m
2026-07-15 APZ135 - Jul 15, 01:25 UTCJul 15, 14:30 UTC13h 5m
2026-07-14 APZ5262 - Jul 14, 09:40 UTCJul 14, 19:25 UTC9h 45m
2026-07-13 APZ5261 - Jul 13, 17:45 UTCJul 14, 02:50 UTC9h 5m
2026-07-12 APZ802 HKG → ICN Jul 12, 05:50 UTCJul 12, 09:00 UTC3h 10m
2026-07-12 APZ801 - Jul 12, 03:35 UTCJul 12, 03:45 UTC10m
2026-07-12 APZ801 - Jul 12, 00:55 UTCJul 12, 02:55 UTC2h 0m
2026-07-10 APZ102 - Jul 10, 18:30 UTCJul 11, 06:35 UTC12h 5m
2026-07-10 APZ101 - Jul 10, 04:20 UTCJul 10, 15:15 UTC10h 55m
2026-07-09 APZ104 - Jul 9, 06:50 UTCJul 9, 18:55 UTC12h 5m
2026-07-08 APZ103 - Jul 8, 13:25 UTCJul 9, 00:10 UTC10h 45m
2026-07-08 APZ802 HKG → ICN Jul 8, 06:00 UTCJul 8, 09:00 UTC3h 0m
2026-07-08 APZ801 ICN → HKG Jul 8, 01:00 UTCJul 8, 04:00 UTC3h 0m
2026-07-06 APZ136 IAD → ICN Jul 6, 17:50 UTCJul 7, 08:10 UTC14h 20m
2026-07-06 APZ135 ICN → IAD Jul 6, 01:40 UTCJul 6, 14:55 UTC13h 15m
2026-07-03 APZ136 IAD → ICN Jul 3, 17:40 UTCJul 4, 08:55 UTC15h 15m
2026-07-03 APZ135 ICN → IAD Jul 3, 01:20 UTCJul 3, 14:35 UTC13h 15m
2026-07-02 APZ132 - Jul 2, 05:10 UTCJul 2, 19:15 UTC14h 5m
2026-07-01 APZ131 ICN → EWR Jul 1, 12:35 UTCJul 2, 02:00 UTC13h 25m
2026-06-29 APZ132 - Jun 29, 06:34 UTCJun 29, 20:44 UTC14h 10m
2026-06-28 APZ131 ICN → EWR Jun 28, 12:39 UTCJun 29, 01:44 UTC13h 5m
2026-06-27 APZ102 - Jun 27, 18:15 UTCJun 28, 06:49 UTC12h 35m
2026-06-27 APZ101 - Jun 27, 04:09 UTCJun 27, 14:29 UTC10h 20m
2026-06-26 APZ132 - Jun 26, 05:19 UTCJun 26, 19:55 UTC14h 35m
2026-06-25 APZ131 ICN → EWR Jun 25, 12:40 UTCJun 26, 01:54 UTC13h 15m
2026-06-24 APZ136 IAD → ICN Jun 24, 17:40 UTCJun 25, 08:09 UTC14h 30m
2026-06-24 APZ135 ICN → IAD Jun 24, 01:14 UTCJun 24, 14:04 UTC12h 50m
2026-06-23 APZ152 - Jun 23, 07:40 UTCJun 23, 10:15 UTC2h 35m
2026-06-23 APZ152 - Jun 23, 00:45 UTCJun 23, 01:00 UTC15m
2026-06-22 APZ151 - Jun 22, 13:44 UTCJun 22, 15:20 UTC1h 35m
2026-06-21 APZ112 - Jun 21, 23:05 UTCJun 22, 10:34 UTC11h 30m
2026-06-21 APZ111 - Jun 21, 09:10 UTCJun 21, 19:14 UTC10h 5m
2026-06-20 APZ736 NRT → ICN Jun 20, 09:05 UTCJun 20, 10:59 UTC1h 55m
2026-06-20 APZ735 ICN → NRT Jun 20, 05:09 UTCJun 20, 07:09 UTC2h 0m
2026-06-19 APZ132 - Jun 19, 05:19 UTCJun 19, 19:25 UTC14h 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 HL8516 page for operator, model, and routing details .

Mode-S 71C516 frequently asked

What is Mode-S code 71C516?
71C516 is an ICAO 24-bit transponder address. Allocated to Korea, South. Assigned to HL8516.
Where is Mode-S 71C516 registered?
Mode-S code 71C516 is allocated to Korea, South (KR). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 71C516 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 18:50 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 71C516, octal 34342426, decimal 7,456,022.
What flights does 71C516 operate?
Mode-S 71C516 has broadcast 20 distinct callsigns, including APZ131, APZ132, APZ136, APZ135, APZ801.