Apparatus

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sensors Mode-S transponder

71C025

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

Currently assigned to HL8025 · AIRBUS A-330-300

Hex
71C025
Octal
34340045
Decimal
7,454,757
Country
KR
Tail
HL8025
Type
A333
Broadcasting now · callsign KAL442 · 31,100 ft
Flights observed
105
Distinct callsigns
20
Country
KR
Last broadcast
2h ago

Current position

71C025 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 71C025 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
KAL2001 Korean Air 17 2026-05-29
KAL428 Korean Air 12 2026-05-23
KAL2002 Korean Air 12 2026-05-29
KAL427 Korean Air 8 2026-05-23
KAL867 Korean Air 6 2026-04-27
KAL832 Korean Air 6 2026-05-23
KAL831 Korean Air 6 2026-05-22
KAL868 Korean Air 5 2026-04-27
KAL460 Korean Air 4 2026-05-29
KAL459 Korean Air 4 2026-05-28
KAL441 Korean Air 4 2026-05-29
KAL752 Korean Air 3 2026-04-24
KAL751 Korean Air 3 2026-04-24
KAL658 - 3 2026-04-14
KAL457 Korean Air 3 2026-05-22
KAL2011 Korean Air 3 2026-05-19
KAL2012 Korean Air 2 2026-05-19
KAL657 Korean Air 1 2026-04-14
KAL458 Korean Air 1 2026-05-20
KAL142 Korean Air 1 2026-05-28

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-29 KAL441 ICN → HAN May 29, 23:20 UTCMay 30, 03:05 UTC3h 45m
2026-05-29 KAL460 DAD → ICN May 29, 10:20 UTCMay 29, 20:35 UTC10h 16m
2026-05-29 KAL2002 HKG → ICN May 29, 04:45 UTCMay 29, 07:55 UTC3h 10m
2026-05-29 KAL2001 ICN → HKG May 29, 02:10 UTCMay 29, 02:25 UTC15m
2026-05-28 KAL2001 ICN → HKG May 28, 23:25 UTCMay 29, 01:35 UTC2h 10m
2026-05-28 KAL459 ICN → DAD May 28, 09:45 UTCMay 28, 20:10 UTC10h 25m
2026-05-28 KAL142 XIY → ICN May 28, 07:20 UTCMay 28, 07:45 UTC25m
2026-05-28 KAL141 ICN → XIY May 28, 00:55 UTCMay 28, 06:35 UTC5h 40m
2026-05-26 KAL441 ICN → HAN May 26, 23:35 UTCMay 27, 10:00 UTC10h 25m
2026-05-26 KAL460 DAD → ICN May 26, 09:45 UTCMay 26, 20:29 UTC10h 45m
2026-05-26 KAL2002 HKG → ICN May 26, 04:39 UTCMay 26, 07:49 UTC3h 10m
2026-05-26 KAL2001 ICN → HKG May 26, 02:19 UTCMay 26, 02:29 UTC10m
2026-05-25 KAL2001 ICN → HKG May 25, 23:35 UTCMay 26, 01:44 UTC2h 10m
2026-05-25 KAL460 DAD → ICN May 25, 09:35 UTCMay 25, 20:09 UTC10h 35m
2026-05-25 KAL2002 HKG → ICN May 25, 04:35 UTCMay 25, 07:40 UTC3h 5m
2026-05-25 KAL2001 ICN → HKG May 25, 02:00 UTCMay 25, 02:15 UTC15m
2026-05-24 KAL2001 ICN → HKG May 24, 23:20 UTCMay 24, 23:46 UTC26m
2026-05-23 KAL428 KUL → ICN May 23, 18:50 UTCMay 23, 21:40 UTC2h 50m
2026-05-23 KAL428 KUL → ICN May 23, 15:45 UTCMay 23, 15:55 UTC10m
2026-05-23 KAL427 ICN → KUL May 23, 07:40 UTCMay 23, 13:30 UTC5h 50m
2026-05-23 KAL832 SHE → ICN May 23, 03:45 UTCMay 23, 04:10 UTC25m
2026-05-22 KAL831 ICN → SHE May 22, 23:50 UTCMay 23, 00:15 UTC25m
2026-05-22 KAL457 ICN → DAD May 22, 03:10 UTCMay 22, 12:55 UTC9h 45m
2026-05-21 KAL428 KUL → ICN May 21, 18:50 UTCMay 21, 21:45 UTC2h 55m
2026-05-21 KAL428 KUL → ICN May 21, 15:35 UTCMay 21, 15:50 UTC15m
2026-05-21 KAL427 ICN → KUL May 21, 07:35 UTCMay 21, 13:40 UTC6h 5m
2026-05-21 KAL832 SHE → ICN May 21, 03:40 UTCMay 21, 03:55 UTC15m
2026-05-20 KAL831 ICN → SHE May 20, 23:40 UTCMay 21, 00:05 UTC25m
2026-05-20 KAL458 DAD → ICN May 20, 12:35 UTCMay 20, 13:15 UTC40m
2026-05-20 KAL457 ICN → DAD May 20, 03:10 UTCMay 20, 11:25 UTC8h 16m
2026-05-19 KAL2012 HKG → ICN May 19, 17:10 UTCMay 19, 20:10 UTC3h 0m
2026-05-19 KAL2011 ICN → HKG May 19, 11:15 UTCMay 19, 14:20 UTC3h 5m
2026-05-18 KAL441 ICN → HAN May 18, 23:10 UTCMay 19, 09:05 UTC9h 55m
2026-05-18 KAL2012 HKG → ICN May 18, 16:50 UTCMay 18, 20:00 UTC3h 9m
2026-05-18 KAL2011 ICN → HKG May 18, 14:05 UTCMay 18, 14:20 UTC15m
2026-05-18 KAL2011 ICN → HKG May 18, 11:20 UTCMay 18, 13:30 UTC2h 10m
2026-05-18 KAL2002 HKG → ICN May 18, 04:40 UTCMay 18, 07:45 UTC3h 5m
2026-05-18 KAL2001 ICN → HKG May 18, 02:05 UTCMay 18, 02:30 UTC25m
2026-05-17 KAL2001 ICN → HKG May 17, 23:30 UTCMay 18, 01:35 UTC2h 5m
2026-05-17 KAL460 DAD → ICN May 17, 09:40 UTCMay 17, 20:20 UTC10h 40m
2026-05-17 KAL2002 HKG → ICN May 17, 05:25 UTCMay 17, 07:50 UTC2h 25m
2026-05-17 KAL2002 HKG → ICN May 17, 04:35 UTCMay 17, 04:50 UTC15m
2026-05-16 KAL2001 ICN → HKG May 16, 23:40 UTCMay 17, 02:40 UTC3h 0m
2026-05-16 KAL2002 HKG → ICN May 16, 07:20 UTCMay 16, 07:51 UTC30m
2026-05-16 KAL2002 HKG → ICN May 16, 05:30 UTCMay 16, 06:06 UTC36m
2026-05-16 KAL2002 HKG → ICN May 16, 04:40 UTCMay 16, 04:55 UTC15m
2026-05-16 KAL2001 ICN → HKG May 16, 02:25 UTCMay 16, 02:45 UTC20m
2026-05-15 KAL2001 ICN → HKG May 15, 23:25 UTCMay 16, 01:55 UTC2h 30m
2026-05-15 KAL457 ICN → DAD May 15, 03:10 UTCMay 15, 13:05 UTC9h 55m
2026-04-27 KAL868 CAN → ICN Apr 27, 07:20 UTCApr 27, 08:00 UTC40m

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 HL8025 page for operator, model, and routing details .

Mode-S 71C025 frequently asked

What is Mode-S code 71C025?
71C025 is an ICAO 24-bit transponder address. Allocated to Korea, South. Assigned to HL8025.
Where is Mode-S 71C025 registered?
Mode-S code 71C025 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 71C025 broadcasting right now?
Yes. Mode-S 71C025 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 71C025, octal 34340045, decimal 7,454,757.
What flights does 71C025 operate?
Mode-S 71C025 has broadcast 20 distinct callsigns, including KAL2001, KAL428, KAL2002, KAL427, KAL867.