Apparatus

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sensors Mode-S transponder

71C258

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

Currently assigned to HL8258 · AIRBUS A-330-300

Hex
71C258
Octal
34341130
Decimal
7,455,320
Country
KR
Tail
HL8258
Type
A333
Broadcasting now · callsign AAR748 · 12,225 ft
Flights observed
311
Distinct callsigns
20
Country
KR
Last broadcast
Jul 26, 10:20 UTC

Current position

71C258 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 71C258 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
AAR702 Asiana Airlines 17 2026-07-23
AAR701 Asiana Airlines 16 2026-07-22
AAR301 - 11 2026-07-26
AAR107 Asiana Airlines 11 2026-07-24
AAR745 Asiana Airlines 10 2026-05-09
AAR178 - 10 2026-07-12
AAR177 - 10 2026-07-12
AAR108 - 10 2026-07-23
AAR573 - 9 2026-07-10
AAR713 Asiana Airlines 8 2026-07-21
AAR574 - 8 2026-07-10
AAR567 Asiana Airlines 8 2026-07-20
AAR302 - 8 2026-07-26
AAR124 - 7 2026-06-29
AAR122 - 7 2026-06-27
AAR112 Asiana Airlines 7 2026-07-21
AAR111 Asiana Airlines 7 2026-07-22
AAR746 Asiana Airlines 6 2026-05-09
AAR714 - 6 2026-07-21
AAR372 - 6 2026-06-23

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 AAR365 ICN → PVG Jul 26, 05:45 UTCJul 26, 10:20 UTC4h 36m
2026-07-26 AAR302 - Jul 26, 03:35 UTCJul 26, 03:55 UTC20m
2026-07-26 AAR301 - Jul 26, 00:35 UTCJul 26, 01:00 UTC25m
2026-07-25 AAR748 HKT → ICN Jul 25, 21:50 UTCJul 25, 22:10 UTC20m
2026-07-25 AAR748 HKT → ICN Jul 25, 16:40 UTCJul 25, 18:45 UTC2h 5m
2026-07-25 AAR747 ICN → HKT Jul 25, 08:45 UTCJul 25, 14:15 UTC5h 30m
2026-07-25 AAR712 TPE → ICN Jul 25, 04:55 UTCJul 25, 07:05 UTC2h 10m
2026-07-25 AAR711 ICN → TPE Jul 25, 01:55 UTCJul 25, 02:10 UTC15m
2026-07-25 AAR711 ICN → TPE Jul 25, 00:10 UTCJul 25, 00:50 UTC40m
2026-07-24 AAR334 PEK → ICN Jul 24, 10:00 UTCJul 24, 10:20 UTC20m
2026-07-24 AAR334 PEK → ICN Jul 24, 08:50 UTCJul 24, 09:05 UTC15m
2026-07-24 AAR333 ICN → PEK Jul 24, 05:30 UTCJul 24, 05:55 UTC25m
2026-07-24 AAR107 NRT → ICN Jul 24, 00:50 UTCJul 24, 02:50 UTC2h 0m
2026-07-23 AAR108 - Jul 23, 10:35 UTCJul 23, 12:30 UTC1h 55m
2026-07-23 AAR702 MNL → ICN Jul 23, 05:20 UTCJul 23, 08:55 UTC3h 35m
2026-07-22 AAR701 ICN → MNL Jul 22, 23:50 UTCJul 23, 03:20 UTC3h 30m
2026-07-22 AAR111 KIX → ICN Jul 22, 01:50 UTCJul 22, 03:25 UTC1h 35m
2026-07-21 AAR112 ICN → KIX Jul 21, 22:20 UTCJul 21, 23:40 UTC1h 20m
2026-07-21 AAR714 TPE → ICN Jul 21, 09:50 UTCJul 21, 11:55 UTC2h 5m
2026-07-21 AAR713 ICN → TPE Jul 21, 08:00 UTCJul 21, 08:20 UTC20m
2026-07-21 AAR713 ICN → TPE Jul 21, 06:15 UTCJul 21, 06:50 UTC35m
2026-07-21 AAR111 KIX → ICN Jul 21, 02:00 UTCJul 21, 03:30 UTC1h 30m
2026-07-20 AAR112 ICN → KIX Jul 20, 22:45 UTCJul 21, 00:10 UTC1h 24m
2026-07-20 AAR567 ICN → UBN Jul 20, 13:20 UTCJul 20, 21:00 UTC7h 40m
2026-07-20 AAR334 - Jul 20, 10:15 UTCJul 20, 10:45 UTC30m
2026-07-20 AAR333 ICN → PEK Jul 20, 05:20 UTCJul 20, 05:50 UTC30m
2026-07-20 AAR107 - Jul 20, 00:25 UTCJul 20, 02:30 UTC2h 5m
2026-07-19 AAR108 ICN → NRT Jul 19, 09:50 UTCJul 19, 11:45 UTC1h 55m
2026-07-19 AAR702 - Jul 19, 04:35 UTCJul 19, 08:05 UTC3h 30m
2026-07-18 AAR701 ICN → MNL Jul 18, 23:00 UTCJul 19, 02:15 UTC3h 15m
2026-07-18 AAR568 - Jul 18, 20:25 UTCJul 18, 20:45 UTC20m
2026-07-18 AAR567 - Jul 18, 13:25 UTCJul 18, 15:00 UTC1h 35m
2026-07-17 AAR731 ICN → SGN Jul 17, 23:50 UTCJul 18, 11:30 UTC11h 41m
2026-07-17 AAR714 - Jul 17, 10:35 UTCJul 17, 11:10 UTC35m
2026-07-17 AAR714 - Jul 17, 09:04 UTCJul 17, 09:35 UTC30m
2026-07-17 AAR713 ICN → TPE Jul 17, 05:30 UTCJul 17, 07:35 UTC2h 5m
2026-07-17 AAR302 - Jul 17, 03:25 UTCJul 17, 03:50 UTC25m
2026-07-17 AAR301 - Jul 17, 00:35 UTCJul 17, 00:55 UTC20m
2026-07-16 AAR105 - Jul 16, 11:05 UTCJul 16, 12:55 UTC1h 50m
2026-07-16 AAR106 ICN → NRT Jul 16, 07:10 UTCJul 16, 09:10 UTC2h 0m
2026-07-16 AAR302 - Jul 16, 03:25 UTCJul 16, 03:45 UTC20m
2026-07-16 AAR301 - Jul 16, 00:35 UTCJul 16, 01:00 UTC25m
2026-07-15 AAR568 - Jul 15, 18:50 UTCJul 15, 19:15 UTC25m
2026-07-15 AAR567 - Jul 15, 13:10 UTCJul 15, 13:35 UTC25m
2026-07-15 AAR567 - Jul 15, 11:55 UTCJul 15, 12:20 UTC25m
2026-07-15 AAR334 - Jul 15, 09:00 UTCJul 15, 09:25 UTC25m
2026-07-15 AAR333 - Jul 15, 04:35 UTCJul 15, 04:55 UTC20m
2026-07-15 AAR107 - Jul 15, 00:20 UTCJul 15, 02:15 UTC1h 55m
2026-07-14 AAR108 - Jul 14, 09:55 UTCJul 14, 11:55 UTC2h 0m
2026-07-14 AAR702 - Jul 14, 04:25 UTCJul 14, 07:55 UTC3h 30m

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 HL8258 page for operator, model, and routing details .

Mode-S 71C258 frequently asked

What is Mode-S code 71C258?
71C258 is an ICAO 24-bit transponder address. Allocated to Korea, South. Assigned to HL8258.
Where is Mode-S 71C258 registered?
Mode-S code 71C258 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 71C258 broadcasting right now?
Yes. Mode-S 71C258 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 71C258, octal 34341130, decimal 7,455,320.
What flights does 71C258 operate?
Mode-S 71C258 has broadcast 20 distinct callsigns, including AAR702, AAR701, AAR301, AAR107, AAR745.