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 AAR108 · 10,325 ft
Flights observed
262
Distinct callsigns
20
Country
KR
Last broadcast
3h ago

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 - 15 2026-07-14
AAR701 - 14 2026-07-13
AAR745 Asiana Airlines 10 2026-05-09
AAR178 - 10 2026-07-12
AAR177 - 10 2026-07-12
AAR573 - 9 2026-07-10
AAR574 - 8 2026-07-10
AAR301 - 8 2026-07-12
AAR107 - 8 2026-07-08
AAR124 - 7 2026-06-29
AAR122 - 7 2026-06-27
AAR108 - 7 2026-07-07
AAR746 Asiana Airlines 6 2026-05-09
AAR372 - 6 2026-06-23
AAR121 - 6 2026-06-27
AAR713 - 5 2026-06-25
AAR365 - 5 2026-07-05
AAR361 - 5 2026-07-10
AAR356 - 5 2026-07-09
AAR302 - 5 2026-07-12

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 AAR702 - Jul 14, 04:25 UTCJul 14, 07:55 UTC3h 30m
2026-07-13 AAR701 - Jul 13, 22:55 UTCJul 14, 02:25 UTC3h 30m
2026-07-13 AAR568 - Jul 13, 18:55 UTCJul 13, 19:15 UTC20m
2026-07-13 AAR567 - Jul 13, 12:10 UTCJul 13, 13:40 UTC1h 30m
2026-07-13 AAR173 - Jul 13, 05:50 UTCJul 13, 08:05 UTC2h 15m
2026-07-13 AAR174 ICN → CTS Jul 13, 01:40 UTCJul 13, 04:10 UTC2h 30m
2026-07-12 AAR177 HND → ICN Jul 12, 16:50 UTCJul 12, 18:40 UTC1h 50m
2026-07-12 AAR178 ICN → HND Jul 12, 12:40 UTCJul 12, 14:55 UTC2h 15m
2026-07-12 AAR366 - Jul 12, 05:45 UTCJul 12, 10:40 UTC4h 55m
2026-07-12 AAR302 - Jul 12, 03:40 UTCJul 12, 04:01 UTC20m
2026-07-12 AAR301 - Jul 12, 00:30 UTCJul 12, 00:50 UTC20m
2026-07-11 AAR177 HND → ICN Jul 11, 16:55 UTCJul 11, 18:45 UTC1h 50m
2026-07-11 AAR178 ICN → HND Jul 11, 13:00 UTCJul 11, 14:55 UTC1h 55m
2026-07-11 AAR359 ICN → ICN Jul 11, 04:01 UTCJul 11, 09:05 UTC5h 5m
2026-07-10 AAR574 - Jul 10, 23:05 UTCJul 10, 23:25 UTC20m
2026-07-10 AAR573 - Jul 10, 08:05 UTCJul 10, 22:15 UTC14h 11m
2026-07-10 AAR361 ICN → ICN Jul 10, 00:35 UTCJul 10, 05:35 UTC5h 0m
2026-07-09 AAR356 - Jul 9, 13:20 UTCJul 9, 21:00 UTC7h 40m
2026-07-08 AAR732 - Jul 8, 23:55 UTCJul 9, 11:35 UTC11h 40m
2026-07-08 AAR334 - Jul 8, 10:10 UTCJul 8, 10:40 UTC30m
2026-07-08 AAR333 - Jul 8, 04:35 UTCJul 8, 05:00 UTC25m
2026-07-08 AAR107 - Jul 8, 00:30 UTCJul 8, 02:25 UTC1h 55m
2026-07-07 AAR108 ICN → NRT Jul 7, 10:10 UTCJul 7, 12:05 UTC1h 55m
2026-07-07 AAR702 - Jul 7, 05:05 UTCJul 7, 08:40 UTC3h 35m
2026-07-06 AAR701 - Jul 6, 23:35 UTCJul 7, 03:00 UTC3h 25m
2026-07-06 AAR567 ICN → ICN Jul 6, 11:50 UTCJul 6, 19:55 UTC8h 5m
2026-07-06 AAR173 - Jul 6, 05:45 UTCJul 6, 08:15 UTC2h 30m
2026-07-06 AAR174 - Jul 6, 01:40 UTCJul 6, 03:55 UTC2h 15m
2026-07-05 AAR365 ICN → ICN Jul 5, 05:40 UTCJul 5, 10:10 UTC4h 30m
2026-07-05 AAR302 - Jul 5, 03:35 UTCJul 5, 04:00 UTC25m
2026-07-05 AAR301 - Jul 5, 00:30 UTCJul 5, 00:55 UTC25m
2026-07-04 AAR568 - Jul 4, 19:00 UTCJul 4, 19:25 UTC25m
2026-07-04 AAR567 - Jul 4, 11:55 UTCJul 4, 13:25 UTC1h 30m
2026-07-04 AAR173 - Jul 4, 07:50 UTCJul 4, 08:15 UTC25m
2026-07-04 AAR173 - Jul 4, 05:45 UTCJul 4, 07:20 UTC1h 35m
2026-07-04 AAR174 - Jul 4, 01:35 UTCJul 4, 03:55 UTC2h 20m
2026-07-03 AAR574 - Jul 3, 22:25 UTCJul 3, 22:50 UTC25m
2026-07-03 AAR573 - Jul 3, 07:55 UTCJul 3, 21:40 UTC13h 45m
2026-07-03 AAR361 ICN → ICN Jul 3, 00:25 UTCJul 3, 05:45 UTC5h 20m
2026-07-02 AAR734 - Jul 2, 20:15 UTCJul 2, 20:55 UTC40m
2026-07-02 AAR734 - Jul 2, 17:05 UTCJul 2, 17:35 UTC30m
2026-07-02 AAR733 - Jul 2, 11:00 UTCJul 2, 15:05 UTC4h 5m
2026-07-02 AAR173 - Jul 2, 05:45 UTCJul 2, 08:20 UTC2h 35m
2026-07-02 AAR174 - Jul 2, 01:40 UTCJul 2, 03:50 UTC2h 10m
2026-07-01 AAR574 - Jul 1, 23:00 UTCJul 1, 23:20 UTC20m
2026-07-01 AAR574 - Jul 1, 09:20 UTCJul 1, 22:10 UTC12h 50m
2026-07-01 AAR573 - Jul 1, 08:05 UTCJul 1, 08:20 UTC15m
2026-07-01 AAR361 ICN → ICN Jul 1, 00:30 UTCJul 1, 05:40 UTC5h 10m
2026-06-30 AAR578 - Jun 30, 22:20 UTCJun 30, 22:45 UTC25m
2026-06-30 AAR577 - Jun 30, 09:40 UTCJun 30, 21:40 UTC12h 0m

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, AAR745, AAR178, AAR177.