Apparatus

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sensors Mode-S transponder

71C534

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

Currently assigned to HL8534 · AIRBUS A-321neo

Hex
71C534
Octal
34342464
Decimal
7,456,052
Country
KR
Tail
HL8534
Type
A21N
Broadcasting now · callsign AAR336 · 31,775 ft
Flights observed
428
Distinct callsigns
20
Country
KR
Last broadcast
Jul 26, 22:05 UTC

Current position

71C534 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 71C534 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
AAR332 - 13 2026-07-15
AAR722 Asiana Airlines 12 2026-07-23
AAR721 Asiana Airlines 12 2026-07-23
AAR354 Asiana Airlines 12 2026-07-19
AAR171 - 12 2026-07-15
AAR353 Asiana Airlines 11 2026-07-19
AAR324 - 11 2026-07-22
AAR172 - 11 2026-07-15
AAR151 - 10 2026-07-14
AAR351 Asiana Airlines 9 2026-07-26
AAR323 - 9 2026-07-17
AAR152 - 9 2026-07-14
AAR367 - 8 2026-06-24
AAR352 - 8 2026-07-13
AAR331 - 8 2026-07-14
AAR755 Asiana Airlines 7 2026-07-21
AAR708 Asiana Airlines 7 2026-07-26
AAR707 Asiana Airlines 7 2026-07-26
AAR350 - 7 2026-06-27
AAR349 - 7 2026-06-27

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 AAR708 CRK → ICN Jul 26, 18:20 UTCJul 26, 22:05 UTC3h 45m
2026-07-26 AAR707 ICN → CRK Jul 26, 13:45 UTCJul 26, 17:00 UTC3h 15m
2026-07-26 AAR351 ICN → YNJ Jul 26, 06:50 UTCJul 26, 11:55 UTC5h 5m
2026-07-26 AAR121 NGO → ICN Jul 26, 03:15 UTCJul 26, 04:55 UTC1h 40m
2026-07-26 AAR122 ICN → NGO Jul 26, 00:30 UTCJul 26, 01:50 UTC1h 20m
2026-07-25 AAR105 NRT → ICN Jul 25, 11:20 UTCJul 25, 13:15 UTC1h 55m
2026-07-25 AAR106 ICN → NRT Jul 25, 07:50 UTCJul 25, 09:55 UTC2h 5m
2026-07-25 AAR115 KIX → ICN Jul 25, 00:50 UTCJul 25, 02:15 UTC1h 25m
2026-07-24 AAR116 ICN → KIX Jul 24, 11:00 UTCJul 24, 12:25 UTC1h 25m
2026-07-24 AAR133 FUK → ICN Jul 24, 08:05 UTCJul 24, 09:00 UTC55m
2026-07-24 AAR134 ICN → FUK Jul 24, 05:20 UTCJul 24, 06:10 UTC50m
2026-07-23 AAR756 DAD → ICN Jul 23, 10:55 UTCJul 23, 20:40 UTC9h 45m
2026-07-23 AAR722 HKG → ICN Jul 23, 05:40 UTCJul 23, 09:05 UTC3h 25m
2026-07-23 AAR721 ICN → HKG Jul 23, 00:30 UTCJul 23, 03:35 UTC3h 5m
2026-07-22 AAR324 ICN → ICN Jul 22, 11:30 UTCJul 22, 19:50 UTC8h 20m
2026-07-22 AAR134 ICN → FUK Jul 22, 05:10 UTCJul 22, 05:25 UTC15m
2026-07-21 AAR756 DAD → ICN Jul 21, 12:15 UTCJul 21, 20:20 UTC8h 5m
2026-07-21 AAR755 ICN → DAD Jul 21, 10:35 UTCJul 21, 11:10 UTC35m
2026-07-21 AAR348 - Jul 21, 08:20 UTCJul 21, 08:50 UTC30m
2026-07-21 AAR347 ICN → XIY Jul 21, 01:20 UTCJul 21, 07:25 UTC6h 5m
2026-07-20 AAR746 HKG → ICN Jul 20, 18:05 UTCJul 20, 21:15 UTC3h 10m
2026-07-20 AAR745 ICN → HKG Jul 20, 11:55 UTCJul 20, 14:55 UTC3h 0m
2026-07-20 AAR348 - Jul 20, 09:00 UTCJul 20, 09:25 UTC25m
2026-07-20 AAR347 - Jul 20, 01:25 UTCJul 20, 02:50 UTC1h 25m
2026-07-19 AAR354 CKG → ICN Jul 19, 21:20 UTCJul 19, 21:40 UTC20m
2026-07-19 AAR353 ICN → CKG Jul 19, 13:20 UTCJul 19, 20:20 UTC7h 0m
2026-07-19 AAR123 - Jul 19, 10:20 UTCJul 19, 11:40 UTC1h 20m
2026-07-19 AAR124 - Jul 19, 07:30 UTCJul 19, 08:55 UTC1h 25m
2026-07-19 AAR304 - Jul 19, 05:10 UTCJul 19, 05:35 UTC25m
2026-07-19 AAR303 ICN → CGQ Jul 19, 00:25 UTCJul 19, 01:05 UTC40m
2026-07-18 AAR378 - Jul 18, 13:25 UTCJul 18, 13:45 UTC20m
2026-07-18 AAR377 - Jul 18, 10:40 UTCJul 18, 11:00 UTC20m
2026-07-18 AAR340 - Jul 18, 08:20 UTCJul 18, 08:55 UTC35m
2026-07-18 AAR339 - Jul 18, 03:35 UTCJul 18, 04:00 UTC25m
2026-07-17 AAR324 - Jul 17, 23:10 UTCJul 17, 23:30 UTC20m
2026-07-17 AAR324 - Jul 17, 19:30 UTCJul 17, 20:44 UTC1h 15m
2026-07-17 AAR323 - Jul 17, 11:39 UTCJul 17, 18:34 UTC6h 55m
2026-07-17 AAR133 - Jul 17, 07:44 UTCJul 17, 08:45 UTC1h 0m
2026-07-17 AAR134 - Jul 17, 05:15 UTCJul 17, 06:00 UTC45m
2026-07-17 AAR115 KIX → ICN Jul 17, 00:45 UTCJul 17, 02:05 UTC1h 20m
2026-07-16 AAR116 ICN → KIX Jul 16, 11:05 UTCJul 16, 12:25 UTC1h 20m
2026-07-16 AAR722 - Jul 16, 08:55 UTCJul 16, 09:35 UTC40m
2026-07-16 AAR722 - Jul 16, 06:15 UTCJul 16, 07:40 UTC1h 25m
2026-07-16 AAR721 - Jul 16, 02:45 UTCJul 16, 04:05 UTC1h 20m
2026-07-16 AAR721 - Jul 16, 01:05 UTCJul 16, 01:40 UTC35m
2026-07-15 AAR708 - Jul 15, 18:20 UTCJul 15, 21:50 UTC3h 30m
2026-07-15 AAR707 - Jul 15, 13:25 UTCJul 15, 16:45 UTC3h 20m
2026-07-15 AAR171 - Jul 15, 09:30 UTCJul 15, 11:15 UTC1h 45m
2026-07-15 AAR172 - Jul 15, 07:40 UTCJul 15, 08:00 UTC20m
2026-07-15 AAR172 - Jul 15, 06:15 UTCJul 15, 06:50 UTC35m

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 HL8534 page for operator, model, and routing details .

Mode-S 71C534 frequently asked

What is Mode-S code 71C534?
71C534 is an ICAO 24-bit transponder address. Allocated to Korea, South. Assigned to HL8534.
Where is Mode-S 71C534 registered?
Mode-S code 71C534 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 71C534 broadcasting right now?
Yes. Mode-S 71C534 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 71C534, octal 34342464, decimal 7,456,052.
What flights does 71C534 operate?
Mode-S 71C534 has broadcast 20 distinct callsigns, including AAR332, AAR722, AAR721, AAR354, AAR171.