Apparatus

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sensors Mode-S transponder

71C364

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

Currently assigned to HL8364 · AIRBUS A-321neo

Hex
71C364
Octal
34341544
Decimal
7,455,588
Country
KR
Tail
HL8364
Type
A21N
Broadcasting now · callsign AAR106 · 35,025 ft
Flights observed
443
Distinct callsigns
20
Country
KR
Last broadcast
Jul 26, 16:05 UTC

Current position

71C364 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 71C364 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
AAR721 Asiana Airlines 14 2026-07-25
AAR722 Asiana Airlines 12 2026-07-25
AAR172 Asiana Airlines 12 2026-07-21
AAR347 - 11 2026-07-17
AAR327 Asiana Airlines 10 2026-07-20
AAR103 - 10 2026-06-28
AAR755 - 9 2026-07-17
AAR743 - 9 2026-07-18
AAR739 Asiana Airlines 9 2026-07-25
AAR354 Asiana Airlines 9 2026-07-23
AAR348 - 9 2026-07-17
AAR328 Asiana Airlines 9 2026-07-20
AAR173 - 9 2026-06-27
AAR171 Asiana Airlines 9 2026-07-21
AAR106 Asiana Airlines 9 2026-04-28
AAR104 - 9 2026-06-28
AAR744 - 8 2026-07-18
AAR708 Asiana Airlines 8 2026-05-14
AAR353 Asiana Airlines 8 2026-07-23
AAR350 - 8 2026-06-25

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 AAR372 SZX → ICN Jul 26, 12:35 UTCJul 26, 15:55 UTC3h 20m
2026-07-26 AAR371 ICN → SZX Jul 26, 10:40 UTCJul 26, 11:00 UTC20m
2026-07-26 AAR371 ICN → SZX Jul 26, 07:45 UTCJul 26, 10:10 UTC2h 25m
2026-07-25 AAR740 PNH → ICN Jul 25, 22:10 UTCJul 25, 22:30 UTC20m
2026-07-25 AAR739 ICN → PNH Jul 25, 10:40 UTCJul 25, 19:10 UTC8h 30m
2026-07-25 AAR722 HKG → ICN Jul 25, 05:25 UTCJul 25, 08:30 UTC3h 5m
2026-07-25 AAR721 ICN → HKG Jul 25, 00:20 UTCJul 25, 03:55 UTC3h 35m
2026-07-24 AAR322 CSX → ICN Jul 24, 19:05 UTCJul 24, 19:35 UTC30m
2026-07-24 AAR321 ICN → CSX Jul 24, 12:45 UTCJul 24, 18:25 UTC5h 40m
2026-07-24 AAR730 SGN → PUS Jul 24, 10:20 UTCJul 24, 11:10 UTC50m
2026-07-24 AAR730 SGN → PUS Jul 24, 07:00 UTCJul 24, 07:15 UTC15m
2026-07-24 AAR729 PUS → SGN Jul 24, 01:05 UTCJul 24, 01:50 UTC45m
2026-07-23 AAR354 CKG → ICN Jul 23, 20:20 UTCJul 23, 21:30 UTC1h 10m
2026-07-23 AAR353 ICN → CKG Jul 23, 13:20 UTCJul 23, 13:50 UTC30m
2026-07-23 AAR123 - Jul 23, 10:30 UTCJul 23, 11:55 UTC1h 25m
2026-07-23 AAR124 - Jul 23, 07:35 UTCJul 23, 08:45 UTC1h 10m
2026-07-23 AAR304 CGQ → ICN Jul 23, 05:10 UTCJul 23, 05:30 UTC20m
2026-07-23 AAR303 ICN → CGQ Jul 23, 00:35 UTCJul 23, 01:15 UTC40m
2026-07-22 AAR322 CSX → ICN Jul 22, 18:55 UTCJul 22, 19:20 UTC25m
2026-07-22 AAR321 ICN → CSX Jul 22, 12:55 UTCJul 22, 13:25 UTC30m
2026-07-22 AAR729 PUS → SGN Jul 22, 00:45 UTCJul 22, 04:35 UTC3h 50m
2026-07-21 AAR171 OKA → ICN Jul 21, 10:05 UTCJul 21, 11:45 UTC1h 40m
2026-07-21 AAR172 ICN → OKA Jul 21, 08:15 UTCJul 21, 08:40 UTC25m
2026-07-21 AAR172 ICN → OKA Jul 21, 06:55 UTCJul 21, 07:30 UTC35m
2026-07-21 AAR121 NGO → ICN Jul 21, 03:40 UTCJul 21, 05:15 UTC1h 35m
2026-07-21 AAR122 ICN → NGO Jul 21, 00:45 UTCJul 21, 02:10 UTC1h 25m
2026-07-20 AAR354 CKG → ICN Jul 20, 20:00 UTCJul 20, 21:25 UTC1h 25m
2026-07-20 AAR353 ICN → CKG Jul 20, 13:20 UTCJul 20, 13:45 UTC25m
2026-07-20 AAR171 OKA → ICN Jul 20, 09:40 UTCJul 20, 11:25 UTC1h 45m
2026-07-20 AAR172 ICN → OKA Jul 20, 06:20 UTCJul 20, 08:00 UTC1h 40m
2026-07-20 AAR328 TSN → ICN Jul 20, 04:10 UTCJul 20, 04:35 UTC25m
2026-07-20 AAR327 ICN → TSN Jul 20, 00:20 UTCJul 20, 00:50 UTC30m
2026-07-19 AAR352 YNJ → ICN Jul 19, 11:35 UTCJul 19, 11:55 UTC20m
2026-07-19 AAR351 - Jul 19, 06:40 UTCJul 19, 07:00 UTC20m
2026-07-19 AAR121 - Jul 19, 03:20 UTCJul 19, 04:45 UTC1h 25m
2026-07-19 AAR122 ICN → NGO Jul 19, 00:30 UTCJul 19, 01:50 UTC1h 20m
2026-07-18 AAR744 - Jul 18, 08:20 UTCJul 18, 11:30 UTC3h 10m
2026-07-18 AAR744 - Jul 18, 06:00 UTCJul 18, 06:15 UTC15m
2026-07-18 AAR743 - Jul 18, 04:10 UTCJul 18, 04:25 UTC15m
2026-07-17 AAR743 - Jul 17, 23:25 UTCJul 18, 02:09 UTC2h 45m
2026-07-17 AAR756 DAD → ICN Jul 17, 19:45 UTCJul 17, 20:35 UTC50m
2026-07-17 AAR755 - Jul 17, 10:15 UTCJul 17, 18:40 UTC8h 25m
2026-07-17 AAR348 - Jul 17, 07:44 UTCJul 17, 08:10 UTC25m
2026-07-17 AAR347 - Jul 17, 01:25 UTCJul 17, 02:50 UTC1h 25m
2026-07-16 AAR117 KIX → ICN Jul 16, 15:25 UTCJul 16, 16:44 UTC1h 20m
2026-07-16 AAR118 ICN → KIX Jul 16, 12:14 UTCJul 16, 13:34 UTC1h 20m
2026-07-16 AAR744 - Jul 16, 05:20 UTCJul 16, 10:40 UTC5h 20m
2026-07-16 AAR743 - Jul 16, 03:30 UTCJul 16, 03:50 UTC20m
2026-07-15 AAR743 - Jul 15, 22:40 UTCJul 16, 01:45 UTC3h 5m
2026-07-15 AAR351 ICN → ICN Jul 15, 06:50 UTCJul 15, 13:15 UTC6h 25m

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 HL8364 page for operator, model, and routing details .

Mode-S 71C364 frequently asked

What is Mode-S code 71C364?
71C364 is an ICAO 24-bit transponder address. Allocated to Korea, South. Assigned to HL8364.
Where is Mode-S 71C364 registered?
Mode-S code 71C364 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 71C364 broadcasting right now?
Yes. Mode-S 71C364 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 71C364, octal 34341544, decimal 7,455,588.
What flights does 71C364 operate?
Mode-S 71C364 has broadcast 20 distinct callsigns, including AAR721, AAR722, AAR172, AAR347, AAR327.