Apparatus

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sensors Mode-S transponder

71C586

ICAO 24-bit transponder address · allocated to Korea, South

Currently assigned to HL8586 · AIRBUS A-321neo

Hex
71C586
Octal
34342606
Decimal
7,456,134
Country
KR
Tail
HL8586
Type
A21N
No current signal · last broadcast 2h ago
Flights observed
377
Distinct callsigns
20
Country
KR
Last broadcast
2h ago

Last known position

Most recent position reported by Mode-S 71C586.

Country allocation

The ICAO 24-bit address 71C586 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
AAR173 - 24 2026-06-21
AAR174 - 20 2026-06-21
AAR336 - 13 2026-07-09
AAR371 - 12 2026-07-10
AAR116 - 11 2026-07-13
AAR115 - 11 2026-07-14
AAR739 Asiana Airlines 10 2026-05-12
AAR721 - 10 2026-06-28
AAR372 - 10 2026-07-10
AAR755 - 9 2026-07-02
AAR354 - 9 2026-06-15
AAR349 - 9 2026-07-13
AAR335 - 9 2026-07-09
AAR332 - 9 2026-07-05
AAR353 Asiana Airlines 8 2026-06-15
AAR350 - 8 2026-07-13
AAR327 - 8 2026-07-09
AAR722 - 7 2026-06-28
AAR352 Asiana Airlines 7 2026-05-21
AAR339 Asiana Airlines 7 2026-06-10

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 AAR115 - Jul 14, 00:50 UTCJul 14, 02:10 UTC1h 20m
2026-07-13 AAR116 - Jul 13, 10:55 UTCJul 13, 12:20 UTC1h 25m
2026-07-13 AAR350 - Jul 13, 08:40 UTCJul 13, 09:05 UTC25m
2026-07-13 AAR349 - Jul 13, 03:50 UTCJul 13, 04:30 UTC40m
2026-07-12 AAR123 - Jul 12, 10:20 UTCJul 12, 11:45 UTC1h 25m
2026-07-12 AAR124 - Jul 12, 07:25 UTCJul 12, 08:45 UTC1h 20m
2026-07-12 AAR115 KIX → ICN Jul 12, 00:50 UTCJul 12, 02:10 UTC1h 20m
2026-07-11 AAR116 ICN → KIX Jul 11, 11:00 UTCJul 11, 12:30 UTC1h 30m
2026-07-11 AAR133 - Jul 11, 08:01 UTCJul 11, 08:50 UTC50m
2026-07-11 AAR134 - Jul 11, 05:20 UTCJul 11, 06:10 UTC50m
2026-07-11 AAR115 - Jul 11, 00:45 UTCJul 11, 02:10 UTC1h 25m
2026-07-10 AAR116 - Jul 10, 11:05 UTCJul 10, 12:35 UTC1h 30m
2026-07-10 AAR372 - Jul 10, 08:45 UTCJul 10, 09:35 UTC50m
2026-07-10 AAR372 - Jul 10, 06:25 UTCJul 10, 06:35 UTC10m
2026-07-10 AAR371 - Jul 10, 04:25 UTCJul 10, 04:50 UTC25m
2026-07-10 AAR371 - Jul 10, 01:40 UTCJul 10, 02:25 UTC45m
2026-07-09 AAR322 - Jul 9, 19:20 UTCJul 9, 19:45 UTC25m
2026-07-09 AAR321 - Jul 9, 12:40 UTCJul 9, 13:05 UTC25m
2026-07-09 AAR336 - Jul 9, 10:45 UTCJul 9, 11:10 UTC25m
2026-07-09 AAR335 - Jul 9, 06:35 UTCJul 9, 07:05 UTC30m
2026-07-09 AAR328 - Jul 9, 04:10 UTCJul 9, 04:35 UTC25m
2026-07-09 AAR327 - Jul 9, 00:15 UTCJul 9, 00:40 UTC25m
2026-07-08 AAR117 - Jul 8, 15:35 UTCJul 8, 16:55 UTC1h 20m
2026-07-08 AAR118 ICN → KIX Jul 8, 12:40 UTCJul 8, 14:00 UTC1h 20m
2026-07-08 AAR372 - Jul 8, 10:25 UTCJul 8, 11:15 UTC50m
2026-07-08 AAR371 - Jul 8, 05:15 UTCJul 8, 05:25 UTC10m
2026-07-08 AAR371 - Jul 8, 02:20 UTCJul 8, 03:05 UTC45m
2026-07-07 AAR123 - Jul 7, 10:15 UTCJul 7, 11:45 UTC1h 30m
2026-07-07 AAR124 - Jul 7, 07:35 UTCJul 7, 09:00 UTC1h 25m
2026-07-07 AAR338 ICN → ICN Jul 7, 01:05 UTCJul 7, 05:15 UTC4h 10m
2026-07-06 AAR322 - Jul 6, 19:15 UTCJul 6, 19:55 UTC40m
2026-07-06 AAR321 - Jul 6, 12:35 UTCJul 6, 13:00 UTC25m
2026-07-06 AAR336 - Jul 6, 10:45 UTCJul 6, 11:05 UTC20m
2026-07-06 AAR336 - Jul 6, 09:50 UTCJul 6, 10:00 UTC10m
2026-07-06 AAR335 - Jul 6, 06:20 UTCJul 6, 06:45 UTC25m
2026-07-05 AAR322 - Jul 5, 20:25 UTCJul 5, 20:45 UTC20m
2026-07-05 AAR321 - Jul 5, 13:00 UTCJul 5, 13:20 UTC20m
2026-07-05 AAR336 - Jul 5, 10:50 UTCJul 5, 11:10 UTC20m
2026-07-05 AAR335 - Jul 5, 06:25 UTCJul 5, 06:45 UTC20m
2026-07-05 AAR332 - Jul 5, 04:20 UTCJul 5, 04:45 UTC25m
2026-07-05 AAR332 - Jul 5, 03:10 UTCJul 5, 03:20 UTC10m
2026-07-04 AAR331 - Jul 4, 23:55 UTCJul 5, 00:15 UTC20m
2026-07-04 AAR746 HKG → ICN Jul 4, 18:05 UTCJul 4, 21:10 UTC3h 5m
2026-07-04 AAR745 ICN → HKG Jul 4, 12:30 UTCJul 4, 15:50 UTC3h 20m
2026-07-04 AAR372 - Jul 4, 09:45 UTCJul 4, 10:30 UTC45m
2026-07-04 AAR372 - Jul 4, 07:15 UTCJul 4, 07:30 UTC15m
2026-07-04 AAR371 - Jul 4, 04:15 UTCJul 4, 04:35 UTC20m
2026-07-04 AAR371 - Jul 4, 01:30 UTCJul 4, 02:15 UTC45m
2026-07-03 AAR324 - Jul 3, 19:20 UTCJul 3, 19:45 UTC25m
2026-07-03 AAR323 - Jul 3, 11:25 UTCJul 3, 11:45 UTC20m

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 HL8586 page for operator, model, and routing details .

Mode-S 71C586 frequently asked

What is Mode-S code 71C586?
71C586 is an ICAO 24-bit transponder address. Allocated to Korea, South. Assigned to HL8586.
Where is Mode-S 71C586 registered?
Mode-S code 71C586 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 71C586 broadcasting right now?
No active broadcast right now. Last signal was 2h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 71C586, octal 34342606, decimal 7,456,134.
What flights does 71C586 operate?
Mode-S 71C586 has broadcast 20 distinct callsigns, including AAR173, AAR174, AAR336, AAR371, AAR116.