Apparatus

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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
Broadcasting now · callsign KAL2085 · 500 ft
Flights observed
123
Distinct callsigns
20
Country
KR
Last broadcast
13h ago

Current position

71C529 is currently broadcasting. Map zoomed to live position.

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
KAL2016 Korean Air 8 2026-05-22
KAL708 - 6 2026-05-15
KAL741 Korean Air 5 2026-05-28
KAL707 - 5 2026-05-15
KAL2015 Korean Air 5 2026-05-22
KAL2005 Korean Air 4 2026-05-21
KAL864 Korean Air 3 2026-05-15
KAL863 Korean Air 3 2026-05-15
KAL742 Korean Air 3 2026-05-28
KAL725 Korean Air 3 2026-05-14
KAL712 Korean Air 3 2026-04-21
KAL711 Korean Air 3 2026-04-21
KAL1408 Korean Air 3 2026-05-25
KAL1403 Korean Air 3 2026-05-24
KAL102 Korean Air 3 2026-05-27
KAL101 Korean Air 3 2026-05-27
KAL791 Korean Air 2 2026-05-23
KAL743 Korean Air 2 2026-04-20
KAL738 Korean Air 2 2026-05-26
KAL737 Korean Air 2 2026-05-26

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-29 KAL2132 NRT → PUS May 29, 10:55 UTCMay 29, 12:20 UTC1h 25m
2026-05-29 KAL2131 PUS → NRT May 29, 04:15 UTCMay 29, 09:15 UTC5h 0m
2026-05-29 KAL2085 PUS → TPE May 29, 01:25 UTCMay 29, 02:00 UTC35m
2026-05-28 KAL1407 ICN → PUS May 28, 09:45 UTCMay 28, 10:10 UTC25m
2026-05-28 KAL742 NGO → ICN May 28, 04:55 UTCMay 28, 06:25 UTC1h 30m
2026-05-28 KAL741 ICN → NGO May 28, 02:05 UTCMay 28, 03:25 UTC1h 20m
2026-05-27 KAL876 - May 27, 12:50 UTCMay 27, 13:10 UTC20m
2026-05-27 KAL875 PUS → PVG May 27, 10:20 UTCMay 27, 10:40 UTC20m
2026-05-27 KAL102 NKG → ICN May 27, 06:34 UTCMay 27, 07:00 UTC26m
2026-05-27 KAL101 ICN → NKG May 27, 01:49 UTCMay 27, 02:19 UTC30m
2026-05-26 KAL738 KIX → ICN May 26, 17:39 UTCMay 26, 19:05 UTC1h 25m
2026-05-26 KAL737 ICN → KIX May 26, 12:10 UTCMay 26, 13:29 UTC1h 20m
2026-05-26 KAL770 AXT → ICN May 26, 07:49 UTCMay 26, 10:10 UTC2h 20m
2026-05-26 KAL769 ICN → AXT May 26, 03:55 UTCMay 26, 06:14 UTC2h 20m
2026-05-25 KAL690 PNH → ICN May 25, 22:05 UTCMay 25, 22:25 UTC20m
2026-05-25 KAL689 ICN → PNH May 25, 10:05 UTCMay 25, 20:55 UTC10h 50m
2026-05-25 KAL1408 PUS → ICN May 25, 01:55 UTCMay 25, 02:30 UTC35m
2026-05-24 KAL1403 ICN → PUS May 24, 23:45 UTCMay 24, 23:46 UTC1m
2026-05-24 KAL690 PNH → ICN May 24, 21:30 UTCMay 24, 21:45 UTC15m
2026-05-24 KAL689 ICN → PNH May 24, 10:05 UTCMay 24, 20:10 UTC10h 5m
2026-05-23 KAL626 CGK → ICN May 23, 17:30 UTCMay 23, 20:55 UTC3h 25m
2026-05-23 KAL625 ICN → CGK May 23, 11:50 UTCMay 23, 15:15 UTC3h 25m
2026-05-23 KAL792 OIT → ICN May 23, 06:40 UTCMay 23, 07:10 UTC30m
2026-05-23 KAL791 ICN → FUK May 23, 02:30 UTCMay 23, 03:00 UTC30m
2026-05-22 KAL626 CGK → ICN May 22, 17:25 UTCMay 22, 20:50 UTC3h 25m
2026-05-22 KAL625 ICN → CGK May 22, 11:40 UTCMay 22, 15:15 UTC3h 35m
2026-05-22 KAL2016 MFM → ICN May 22, 07:15 UTCMay 22, 09:30 UTC2h 15m
2026-05-22 KAL2016 MFM → ICN May 22, 06:15 UTCMay 22, 06:35 UTC20m
2026-05-22 KAL2015 ICN → MFM May 22, 01:30 UTCMay 22, 04:50 UTC3h 20m
2026-05-21 KAL2006 HKG → ICN May 21, 10:15 UTCMay 21, 13:25 UTC3h 10m
2026-05-21 KAL2005 ICN → HKG May 21, 07:55 UTCMay 21, 08:10 UTC15m
2026-05-21 KAL2005 ICN → HKG May 21, 05:00 UTCMay 21, 07:20 UTC2h 20m
2026-05-21 KAL892 PVG → ICN May 21, 02:05 UTCMay 21, 02:40 UTC35m
2026-05-20 KAL891 ICN → PVG May 20, 10:45 UTCMay 20, 11:10 UTC25m
2026-05-20 KAL102 NKG → ICN May 20, 06:40 UTCMay 20, 07:15 UTC35m
2026-05-20 KAL101 ICN → NKG May 20, 02:10 UTCMay 20, 02:35 UTC25m
2026-05-19 KAL2016 MFM → ICN May 19, 09:10 UTCMay 19, 09:40 UTC30m
2026-05-19 KAL2016 MFM → ICN May 19, 06:30 UTCMay 19, 07:55 UTC1h 25m
2026-05-19 KAL2015 ICN → MFM May 19, 01:20 UTCMay 19, 04:25 UTC3h 5m
2026-05-18 KAL162 KMG → ICN May 18, 19:00 UTCMay 18, 19:25 UTC25m
2026-05-18 KAL161 ICN → KMG May 18, 10:00 UTCMay 18, 10:15 UTC15m
2026-05-18 KAL2148 OKA → ICN May 18, 04:15 UTCMay 18, 06:01 UTC1h 45m
2026-05-18 KAL2147 ICN → OKA May 18, 02:05 UTCMay 18, 02:30 UTC25m
2026-05-18 KAL2147 ICN → OKA May 18, 00:50 UTCMay 18, 01:15 UTC25m
2026-05-17 KAL162 KMG → ICN May 17, 19:10 UTCMay 17, 19:35 UTC25m
2026-05-17 KAL161 ICN → KMG May 17, 10:00 UTCMay 17, 10:15 UTC15m
2026-05-17 KAL791 ICN → FUK May 17, 02:25 UTCMay 17, 07:10 UTC4h 45m
2026-05-16 KAL2006 HKG → ICN May 16, 10:31 UTCMay 16, 13:46 UTC3h 15m
2026-05-16 KAL2005 ICN → HKG May 16, 07:35 UTCMay 16, 08:01 UTC25m
2026-05-16 KAL2005 ICN → HKG May 16, 04:45 UTCMay 16, 07:05 UTC2h 21m

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?
Yes. Mode-S 71C529 is currently airborne.
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 KAL2016, KAL708, KAL741, KAL707, KAL2015.