Apparatus

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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
Broadcasting now · callsign APZ5262 · 36,975 ft
Flights observed
133
Distinct callsigns
20
Country
KR
Last broadcast
1h ago

Current position

71C516 is currently broadcasting. Map zoomed to live 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 20 distinct

Callsign Airline Flights Last seen
APZ131 Air Premiea 25 2026-07-01
APZ132 - 18 2026-07-02
APZ136 - 10 2026-07-06
APZ135 - 10 2026-07-06
APZ801 - 8 2026-07-12
APZ151 - 7 2026-06-22
APZ152 - 6 2026-06-23
APZ111 - 6 2026-06-21
APZ802 - 5 2026-07-12
APZ736 - 5 2026-06-20
APZ735 - 5 2026-06-20
APZ112 - 5 2026-06-21
APZ102 - 5 2026-07-10
APZ101 - 5 2026-07-10
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
2026-07-14 APZ5262 - Jul 14, 09:40 UTCJul 14, 13:30 UTC3h 50m
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
2026-06-18 APZ131 ICN → EWR Jun 18, 12:30 UTCJun 19, 02:14 UTC13h 44m
2026-06-17 APZ136 IAD → ICN Jun 17, 18:00 UTCJun 18, 08:40 UTC14h 40m
2026-06-17 APZ135 ICN → IAD Jun 17, 01:20 UTCJun 17, 14:30 UTC13h 10m
2026-06-15 APZ602 BKK → ICN Jun 15, 16:24 UTCJun 15, 21:20 UTC4h 55m
2026-06-15 APZ601 ICN → BKK Jun 15, 08:29 UTCJun 15, 13:45 UTC5h 15m
2026-06-13 APZ736 NRT → ICN Jun 13, 09:05 UTCJun 13, 11:05 UTC2h 0m
2026-06-13 APZ735 - Jun 13, 05:35 UTCJun 13, 07:20 UTC1h 45m
2026-06-12 APZ132 - Jun 12, 05:15 UTCJun 12, 19:25 UTC14h 10m
2026-06-11 APZ131 ICN → EWR Jun 11, 12:40 UTCJun 12, 02:05 UTC13h 26m
2026-06-10 APZ136 IAD → ICN Jun 10, 18:40 UTCJun 11, 09:30 UTC14h 50m
2026-06-10 APZ135 ICN → IAD Jun 10, 01:15 UTCJun 10, 14:05 UTC12h 50m
2026-06-09 APZ152 HNL → ICN Jun 9, 00:55 UTCJun 9, 10:25 UTC9h 30m
2026-06-08 APZ151 ICN → HNL Jun 8, 21:05 UTCJun 8, 21:25 UTC20m
2026-06-08 APZ151 ICN → HNL Jun 8, 13:45 UTCJun 8, 15:20 UTC1h 35m
2026-06-07 APZ104 LAX → ICN Jun 7, 06:40 UTCJun 7, 19:10 UTC12h 30m
2026-06-06 APZ103 ICN → LAX Jun 6, 13:25 UTCJun 6, 23:30 UTC10h 5m
2026-06-06 APZ736 NRT → ICN Jun 6, 09:09 UTCJun 6, 11:14 UTC2h 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?
Yes. Mode-S 71C516 is currently airborne.
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.