Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

71C526

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

Currently assigned to HL8526 · AIRBUS A-321neo

Hex
71C526
Octal
34342446
Decimal
7,456,038
Country
KR
Tail
HL8526
Type
A21N
No current signal · last broadcast 5d ago
Flights observed
331
Distinct callsigns
20
Country
KR
Last broadcast
5d ago

Last known position

Most recent position reported by Mode-S 71C526.

Country allocation

The ICAO 24-bit address 71C526 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
ABL174 - 41 2026-07-03
ABL173 - 41 2026-07-03
ABL157 - 40 2026-07-02
ABL158 - 39 2026-07-02
ABL155 - 38 2026-07-03
ABL156 - 35 2026-07-02
ABL788 - 31 2026-07-02
ABL787 - 25 2026-06-27
ABL7475 Air Busan 13 2026-06-13
ABL7485 Air Busan 12 2026-06-13
ABL794 - 2 2026-07-04
ABL801F - 1 2026-07-03
ABL793 - 1 2026-07-04
ABL7127 - 1 2026-07-07
ABL701F - 1 2026-07-07
ABL3945 Air Busan 1 2026-04-27
ABL3935 Air Busan 1 2026-04-27
ABL182 - 1 2026-07-08
ABL181 - 1 2026-07-08
ABL176 Air Busan 1 2026-06-04

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-08 ABL181 - Jul 8, 03:55 UTCJul 8, 06:00 UTC2h 5m
2026-07-08 ABL182 - Jul 8, 00:35 UTCJul 8, 02:40 UTC2h 5m
2026-07-07 ABL7127 - Jul 7, 11:45 UTCJul 7, 12:05 UTC20m
2026-07-07 ABL701F - Jul 7, 02:30 UTCJul 7, 11:00 UTC8h 30m
2026-07-07 ABL147 - Jul 7, 00:45 UTCJul 7, 01:15 UTC30m
2026-07-06 ABL148 - Jul 6, 22:45 UTCJul 6, 23:00 UTC15m
2026-07-04 ABL794 - Jul 4, 07:10 UTCJul 4, 07:35 UTC25m
2026-07-04 ABL794 - Jul 4, 05:45 UTCJul 4, 06:05 UTC20m
2026-07-04 ABL793 PUS → TPE Jul 4, 02:05 UTCJul 4, 03:55 UTC1h 50m
2026-07-03 ABL801F ICN → PUS Jul 3, 23:50 UTCJul 4, 00:30 UTC40m
2026-07-03 ABL173 - Jul 3, 07:20 UTCJul 3, 08:40 UTC1h 20m
2026-07-03 ABL174 ICN → KIX Jul 3, 04:15 UTCJul 3, 05:40 UTC1h 25m
2026-07-03 ABL155 - Jul 3, 01:10 UTCJul 3, 02:20 UTC1h 10m
2026-07-02 ABL156 - Jul 2, 22:35 UTCJul 2, 23:15 UTC40m
2026-07-02 ABL788 - Jul 2, 08:25 UTCJul 2, 19:45 UTC11h 20m
2026-07-02 ABL157 - Jul 2, 05:20 UTCJul 2, 06:00 UTC40m
2026-07-02 ABL158 - Jul 2, 02:45 UTCJul 2, 03:25 UTC40m
2026-07-01 ABL788 - Jul 1, 08:50 UTCJul 1, 19:50 UTC11h 0m
2026-07-01 ABL157 - Jul 1, 05:20 UTCJul 1, 06:25 UTC1h 5m
2026-07-01 ABL158 - Jul 1, 02:45 UTCJul 1, 03:25 UTC40m
2026-06-30 ABL173 KIX → ICN Jun 30, 07:20 UTCJun 30, 08:40 UTC1h 20m
2026-06-30 ABL174 - Jun 30, 04:00 UTCJun 30, 05:25 UTC1h 25m
2026-06-30 ABL155 - Jun 30, 01:19 UTCJun 30, 02:15 UTC56m
2026-06-29 ABL156 - Jun 29, 22:44 UTCJun 29, 23:25 UTC40m
2026-06-29 ABL788 ICN → ICN Jun 29, 08:35 UTCJun 29, 19:15 UTC10h 40m
2026-06-29 ABL157 - Jun 29, 05:20 UTCJun 29, 06:05 UTC45m
2026-06-29 ABL158 - Jun 29, 02:35 UTCJun 29, 03:20 UTC45m
2026-06-28 ABL173 KIX → ICN Jun 28, 07:25 UTCJun 28, 08:50 UTC1h 25m
2026-06-28 ABL174 ICN → KIX Jun 28, 04:05 UTCJun 28, 05:24 UTC1h 20m
2026-06-28 ABL155 - Jun 28, 01:19 UTCJun 28, 02:14 UTC55m
2026-06-27 ABL156 - Jun 27, 22:35 UTCJun 27, 23:19 UTC45m
2026-06-27 ABL787 ICN → ICN Jun 27, 08:39 UTCJun 27, 19:29 UTC10h 50m
2026-06-27 ABL157 - Jun 27, 05:19 UTCJun 27, 06:15 UTC55m
2026-06-27 ABL158 - Jun 27, 02:29 UTCJun 27, 03:44 UTC1h 15m
2026-06-26 ABL788 - Jun 26, 10:25 UTCJun 26, 19:35 UTC9h 10m
2026-06-26 ABL787 - Jun 26, 08:45 UTCJun 26, 09:10 UTC25m
2026-06-26 ABL157 - Jun 26, 05:19 UTCJun 26, 06:15 UTC55m
2026-06-26 ABL158 - Jun 26, 02:34 UTCJun 26, 03:20 UTC45m
2026-06-25 ABL173 KIX → ICN Jun 25, 07:19 UTCJun 25, 08:45 UTC1h 25m
2026-06-25 ABL174 - Jun 25, 04:10 UTCJun 25, 05:39 UTC1h 30m
2026-06-25 ABL155 - Jun 25, 01:19 UTCJun 25, 02:19 UTC1h 0m
2026-06-24 ABL156 - Jun 24, 22:39 UTCJun 24, 23:24 UTC45m
2026-06-24 ABL788 ICN → ICN Jun 24, 08:39 UTCJun 24, 19:34 UTC10h 55m
2026-06-24 ABL157 - Jun 24, 05:09 UTCJun 24, 06:04 UTC55m
2026-06-24 ABL158 - Jun 24, 02:20 UTCJun 24, 03:04 UTC45m
2026-06-23 ABL173 KIX → ICN Jun 23, 07:19 UTCJun 23, 08:45 UTC1h 25m
2026-06-23 ABL174 - Jun 23, 04:00 UTCJun 23, 05:20 UTC1h 20m
2026-06-23 ABL155 - Jun 23, 01:30 UTCJun 23, 02:29 UTC1h 0m
2026-06-22 ABL156 - Jun 22, 22:34 UTCJun 22, 23:20 UTC45m
2026-06-22 ABL788 ICN → ICN Jun 22, 08:29 UTCJun 22, 19:29 UTC11h 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 HL8526 page for operator, model, and routing details .

Mode-S 71C526 frequently asked

What is Mode-S code 71C526?
71C526 is an ICAO 24-bit transponder address. Allocated to Korea, South. Assigned to HL8526.
Where is Mode-S 71C526 registered?
Mode-S code 71C526 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 71C526 broadcasting right now?
No active broadcast right now. Last signal was 5d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 71C526, octal 34342446, decimal 7,456,038.
What flights does 71C526 operate?
Mode-S 71C526 has broadcast 20 distinct callsigns, including ABL174, ABL173, ABL157, ABL158, ABL155.