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 4h ago
Flights observed
284
Distinct callsigns
20
Country
KR
Last broadcast
4h ago

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
KAL2086 - 11 2026-07-07
KAL2016 - 9 2026-06-22
KAL2005 - 9 2026-07-12
KAL2085 - 8 2026-07-07
KAL1410 - 8 2026-07-11
KAL1407 - 8 2026-07-08
KAL864 - 7 2026-07-07
KAL2132 - 7 2026-07-10
KAL2131 - 7 2026-07-10
KAL708 - 6 2026-05-15
KAL2129 - 6 2026-07-10
KAL2015 - 6 2026-06-22
KAL2006 - 6 2026-07-12
KAL863 - 5 2026-07-07
KAL791 - 5 2026-06-27
KAL743 - 5 2026-06-30
KAL741 Korean Air 5 2026-05-28
KAL738 - 5 2026-07-02
KAL737 - 5 2026-07-02
KAL707 - 5 2026-05-15

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
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
2026-07-08 KAL1407 ICN → PUS Jul 8, 09:40 UTCJul 8, 10:20 UTC40m
2026-07-07 KAL864 - Jul 7, 18:50 UTCJul 7, 19:05 UTC15m
2026-07-07 KAL864 - Jul 7, 17:50 UTCJul 7, 18:00 UTC10m
2026-07-07 KAL863 - Jul 7, 12:15 UTCJul 7, 12:40 UTC25m
2026-07-07 KAL1410 PUS → ICN Jul 7, 07:50 UTCJul 7, 08:30 UTC40m
2026-07-07 KAL2086 - Jul 7, 05:45 UTCJul 7, 06:00 UTC15m
2026-07-07 KAL2086 - Jul 7, 04:10 UTCJul 7, 04:35 UTC25m
2026-07-07 KAL2085 PUS → TPE Jul 7, 00:20 UTCJul 7, 02:10 UTC1h 50m
2026-07-06 KAL1407 ICN → PUS Jul 6, 09:55 UTCJul 6, 10:35 UTC40m
2026-07-06 KAL1408 PUS → ICN Jul 6, 01:50 UTCJul 6, 02:35 UTC45m
2026-07-05 KAL1403 - Jul 5, 23:40 UTCJul 6, 00:20 UTC40m
2026-07-05 KAL864 - Jul 5, 18:55 UTCJul 5, 19:20 UTC25m
2026-07-05 KAL864 - Jul 5, 17:55 UTCJul 5, 18:10 UTC15m
2026-07-05 KAL863 - Jul 5, 11:30 UTCJul 5, 11:50 UTC20m
2026-07-05 KAL1410 PUS → ICN Jul 5, 07:35 UTCJul 5, 08:25 UTC50m
2026-07-05 KAL2086 - Jul 5, 05:45 UTCJul 5, 06:00 UTC15m
2026-07-05 KAL2086 - Jul 5, 04:15 UTCJul 5, 04:40 UTC25m
2026-07-05 KAL2085 - Jul 5, 02:15 UTCJul 5, 02:25 UTC10m
2026-07-05 KAL2085 - Jul 5, 00:25 UTCJul 5, 01:00 UTC35m
2026-07-04 KAL2132 - Jul 4, 10:25 UTCJul 4, 12:05 UTC1h 40m
2026-07-04 KAL2131 PUS → NRT Jul 4, 07:15 UTCJul 4, 09:00 UTC1h 45m
2026-07-04 KAL2130 - Jul 4, 03:55 UTCJul 4, 05:40 UTC1h 45m
2026-07-04 KAL2129 PUS → NRT Jul 4, 00:40 UTCJul 4, 02:20 UTC1h 40m
2026-07-03 KAL1401 ICN → PUS Jul 3, 21:50 UTCJul 3, 22:35 UTC45m
2026-07-03 KAL2174 UKB → ICN Jul 3, 10:00 UTCJul 3, 11:25 UTC1h 25m
2026-07-03 KAL2173 ICN → UKB Jul 3, 07:15 UTCJul 3, 08:35 UTC1h 20m
2026-07-03 KAL2172 UKB → ICN Jul 3, 03:00 UTCJul 3, 04:25 UTC1h 25m
2026-07-03 KAL2171 ICN → UKB Jul 3, 00:25 UTCJul 3, 01:40 UTC1h 15m
2026-07-02 KAL738 KIX → ICN Jul 2, 17:30 UTCJul 2, 18:55 UTC1h 25m
2026-07-02 KAL737 ICN → KIX Jul 2, 12:05 UTCJul 2, 13:25 UTC1h 20m
2026-07-02 KAL770 - Jul 2, 07:45 UTCJul 2, 10:15 UTC2h 30m
2026-07-02 KAL769 - Jul 2, 03:55 UTCJul 2, 06:00 UTC2h 5m
2026-07-01 KAL656 - Jul 1, 22:15 UTCJul 2, 01:15 UTC3h 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 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 4h ago.
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 KAL2086, KAL2016, KAL2005, KAL2085, KAL1410.