Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

71C529

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

Currently assigned to HL8529 · AIRBUS A-321neo

Hex
71C529
Octal
34342451
Decimal
7,456,041
Country
KR
Tail
HL8529
Type
A21N
No current signal · last broadcast Jul 26, 22:15 UTC
Flights observed
317
Distinct callsigns
20
Country
KR
Last broadcast
Jul 26, 22:15 UTC

Last known position

Most recent position reported by Mode-S 71C529.

Country allocation

The ICAO 24-bit address 71C529 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
KAL864 Korean Air 13 2026-07-25
KAL2086 Korean Air 13 2026-07-25
KAL2085 Korean Air 10 2026-07-25
KAL2005 Korean Air 10 2026-07-22
KAL2016 - 9 2026-06-22
KAL1410 Korean Air 9 2026-07-25
KAL1407 Korean Air 9 2026-07-24
KAL863 Korean Air 8 2026-07-25
KAL2132 - 7 2026-07-10
KAL2131 - 7 2026-07-10
KAL2006 Korean Air 7 2026-07-22
KAL1408 Korean Air 7 2026-07-24
KAL1403 Korean Air 7 2026-07-23
KAL791 Korean Air 6 2026-07-23
KAL708 - 6 2026-05-15
KAL2129 - 6 2026-07-10
KAL2015 - 6 2026-06-22
KAL1401 Korean Air 6 2026-07-26
KAL792 Korean Air 5 2026-07-23
KAL743 - 5 2026-06-30

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 KAL1401 ICN → PUS Jul 26, 21:55 UTCJul 26, 22:15 UTC20m
2026-07-26 KAL2198 KIJ → ICN Jul 26, 11:40 UTCJul 26, 13:15 UTC1h 35m
2026-07-26 KAL2197 ICN → KIJ Jul 26, 08:35 UTCJul 26, 09:50 UTC1h 15m
2026-07-26 KAL128 FOC → ICN Jul 26, 03:50 UTCJul 26, 05:45 UTC1h 55m
2026-07-26 KAL127 ICN → FOC Jul 26, 01:15 UTCJul 26, 01:30 UTC15m
2026-07-25 KAL127 ICN → FOC Jul 25, 23:40 UTCJul 26, 00:25 UTC45m
2026-07-25 KAL864 PEK → ICN Jul 25, 18:55 UTCJul 25, 19:20 UTC25m
2026-07-25 KAL864 PEK → ICN Jul 25, 17:50 UTCJul 25, 18:05 UTC15m
2026-07-25 KAL863 ICN → PEK Jul 25, 11:30 UTCJul 25, 11:55 UTC25m
2026-07-25 KAL1410 PUS → ICN Jul 25, 07:40 UTCJul 25, 08:25 UTC45m
2026-07-25 KAL2086 TPE → PUS Jul 25, 05:45 UTCJul 25, 06:05 UTC20m
2026-07-25 KAL2086 TPE → PUS Jul 25, 04:10 UTCJul 25, 04:35 UTC25m
2026-07-25 KAL2085 PUS → TPE Jul 25, 01:50 UTCJul 25, 02:05 UTC15m
2026-07-25 KAL2085 PUS → TPE Jul 25, 00:15 UTCJul 25, 00:40 UTC25m
2026-07-24 KAL1407 ICN → PUS Jul 24, 09:50 UTCJul 24, 10:35 UTC45m
2026-07-24 KAL1408 PUS → ICN Jul 24, 01:50 UTCJul 24, 02:30 UTC40m
2026-07-23 KAL1403 ICN → PUS Jul 23, 23:45 UTCJul 24, 00:25 UTC40m
2026-07-23 KAL864 PEK → ICN Jul 23, 19:05 UTCJul 23, 19:30 UTC25m
2026-07-23 KAL864 PEK → ICN Jul 23, 18:10 UTCJul 23, 18:25 UTC15m
2026-07-23 KAL863 ICN → PEK Jul 23, 11:20 UTCJul 23, 11:55 UTC35m
2026-07-23 KAL792 OIT → ICN Jul 23, 06:35 UTCJul 23, 07:35 UTC1h 0m
2026-07-23 KAL791 ICN → FUK Jul 23, 02:25 UTCJul 23, 03:30 UTC1h 5m
2026-07-22 KAL2006 HKG → ICN Jul 22, 11:10 UTCJul 22, 13:30 UTC2h 20m
2026-07-22 KAL2005 ICN → HKG Jul 22, 05:20 UTCJul 22, 05:25 UTC5m
2026-07-22 KAL1408 PUS → ICN Jul 22, 01:50 UTCJul 22, 02:30 UTC40m
2026-07-21 KAL1403 ICN → PUS Jul 21, 23:45 UTCJul 22, 00:25 UTC40m
2026-07-21 KAL864 PEK → ICN Jul 21, 18:40 UTCJul 21, 19:05 UTC25m
2026-07-21 KAL864 PEK → ICN Jul 21, 17:45 UTCJul 21, 18:00 UTC15m
2026-07-21 KAL863 ICN → PEK Jul 21, 11:25 UTCJul 21, 11:55 UTC30m
2026-07-20 KAL200P - Jul 20, 18:50 UTCJul 20, 21:55 UTC3h 5m
2026-07-14 KAL299F - Jul 14, 12:45 UTCJul 14, 15:40 UTC2h 55m
2026-07-14 KAL874 - Jul 14, 07:25 UTCJul 14, 07:50 UTC25m
2026-07-14 KAL873 - Jul 14, 04:10 UTCJul 14, 04:35 UTC25m
2026-07-13 KAL485 - Jul 13, 10:25 UTCJul 13, 23:25 UTC13h 0m
2026-07-12 KAL2006 - Jul 12, 12:40 UTCJul 12, 13:15 UTC35m
2026-07-12 KAL2006 - Jul 12, 10:10 UTCJul 12, 11:40 UTC1h 30m
2026-07-12 KAL2005 - Jul 12, 04:45 UTCJul 12, 07:45 UTC3h 0m
2026-07-12 KAL1408 PUS → ICN Jul 12, 01:45 UTCJul 12, 02:30 UTC45m
2026-07-11 KAL1403 ICN → PUS Jul 11, 23:50 UTCJul 12, 00:35 UTC45m
2026-07-11 KAL164 - Jul 11, 18:00 UTCJul 11, 18:20 UTC20m
2026-07-11 KAL163 - Jul 11, 10:40 UTCJul 11, 11:15 UTC35m
2026-07-11 KAL1410 PUS → ICN Jul 11, 07:45 UTCJul 11, 08:25 UTC40m
2026-07-10 KAL2132 - Jul 10, 10:40 UTCJul 10, 12:15 UTC1h 35m
2026-07-10 KAL2131 PUS → NRT Jul 10, 07:10 UTCJul 10, 08:50 UTC1h 40m
2026-07-10 KAL2130 - Jul 10, 04:00 UTCJul 10, 05:45 UTC1h 45m
2026-07-10 KAL2129 PUS → NRT Jul 10, 00:40 UTCJul 10, 02:20 UTC1h 40m
2026-07-09 KAL2132 - Jul 9, 10:35 UTCJul 9, 12:15 UTC1h 40m
2026-07-09 KAL2131 PUS → NRT Jul 9, 07:15 UTCJul 9, 08:55 UTC1h 40m
2026-07-09 KAL2130 - Jul 9, 03:55 UTCJul 9, 05:40 UTC1h 45m
2026-07-09 KAL2129 PUS → NRT Jul 9, 00:50 UTCJul 9, 02:25 UTC1h 35m

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 HL8529 page for operator, model, and routing details .

Mode-S 71C529 frequently asked

What is Mode-S code 71C529?
71C529 is an ICAO 24-bit transponder address. Allocated to Korea, South. Assigned to HL8529.
Where is Mode-S 71C529 registered?
Mode-S code 71C529 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 71C529 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 22:15 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 71C529, octal 34342451, decimal 7,456,041.
What flights does 71C529 operate?
Mode-S 71C529 has broadcast 20 distinct callsigns, including KAL864, KAL2086, KAL2085, KAL2005, KAL2016.