Apparatus

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sensors Mode-S transponder

71C365

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

Currently assigned to HL8365 · AIRBUS A-321

Hex
71C365
Octal
34341545
Decimal
7,455,589
Country
KR
Tail
HL8365
Type
A321
No current signal · last broadcast 3h ago
Flights observed
355
Distinct callsigns
20
Country
KR
Last broadcast
3h ago

Last known position

Most recent position reported by Mode-S 71C365.

Country allocation

The ICAO 24-bit address 71C365 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
ABL8021 - 27 2026-07-15
ABL8028 - 26 2026-07-15
ABL8824 - 18 2026-07-15
ABL8025 - 15 2026-07-05
ABL8132 - 13 2026-07-15
ABL8109 - 13 2026-07-15
ABL337 - 12 2026-07-14
ABL8102 - 11 2026-07-15
ABL126 - 10 2026-06-30
ABL125 - 10 2026-06-30
ABL8811 - 9 2026-07-09
ABL8105 - 9 2026-07-14
ABL8040 - 8 2026-07-09
ABL321 Air Busan 8 2026-06-04
ABL121 Air Busan 8 2026-06-12
ABL133 Air Busan 7 2026-06-04
ABL8803 - 6 2026-07-17
ABL794 - 6 2026-07-08
ABL712 - 6 2026-06-30
ABL8135 - 5 2026-07-17

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-17 ABL8803 GMP → PUS Jul 17, 22:40 UTCJul 17, 23:20 UTC40m
2026-07-17 ABL8012 - Jul 17, 11:39 UTCJul 17, 12:19 UTC40m
2026-07-17 ABL8135 - Jul 17, 09:04 UTCJul 17, 09:25 UTC20m
2026-07-17 ABL8819 GMP → PUS Jul 17, 06:50 UTCJul 17, 07:30 UTC40m
2026-07-17 ABL8812 PUS → GMP Jul 17, 04:54 UTCJul 17, 05:39 UTC45m
2026-07-17 ABL123 - Jul 17, 02:30 UTCJul 17, 03:34 UTC1h 5m
2026-07-16 ABL124 PUS → KIX Jul 16, 23:55 UTCJul 17, 01:05 UTC1h 10m
2026-07-16 ABL801F GMP → PUS Jul 16, 22:00 UTCJul 16, 22:45 UTC45m
2026-07-15 ABL8824 PUS → GMP Jul 15, 10:25 UTCJul 15, 11:05 UTC40m
2026-07-15 ABL8132 - Jul 15, 09:05 UTCJul 15, 09:25 UTC20m
2026-07-15 ABL8021 - Jul 15, 06:45 UTCJul 15, 07:25 UTC40m
2026-07-15 ABL8028 - Jul 15, 05:00 UTCJul 15, 05:35 UTC35m
2026-07-15 ABL8109 - Jul 15, 03:05 UTCJul 15, 03:25 UTC20m
2026-07-15 ABL8102 - Jul 15, 01:40 UTCJul 15, 02:05 UTC25m
2026-07-14 ABL8105 - Jul 14, 23:00 UTCJul 14, 23:20 UTC20m
2026-07-14 ABL337 PUS → PUS Jul 14, 02:15 UTCJul 14, 09:25 UTC7h 10m
2026-07-13 ABL774 - Jul 13, 21:30 UTCJul 13, 21:50 UTC20m
2026-07-13 ABL773 - Jul 13, 13:30 UTCJul 13, 20:30 UTC7h 0m
2026-07-13 ABL773 - Jul 13, 12:05 UTCJul 13, 12:30 UTC25m
2026-07-13 ABL337 PUS → PUS Jul 13, 00:55 UTCJul 13, 07:15 UTC6h 20m
2026-07-12 ABL8803 GMP → PUS Jul 12, 22:35 UTCJul 12, 23:15 UTC40m
2026-07-12 ABL8824 PUS → GMP Jul 12, 10:40 UTCJul 12, 11:20 UTC40m
2026-07-12 ABL8132 - Jul 12, 09:30 UTCJul 12, 09:45 UTC15m
2026-07-12 ABL8021 - Jul 12, 07:05 UTCJul 12, 07:40 UTC35m
2026-07-12 ABL8028 - Jul 12, 05:20 UTCJul 12, 06:01 UTC40m
2026-07-12 ABL8109 - Jul 12, 03:05 UTCJul 12, 03:45 UTC40m
2026-07-12 ABL803F GMP → PUS Jul 12, 01:25 UTCJul 12, 02:05 UTC40m
2026-07-11 ABL8824 PUS → GMP Jul 11, 11:40 UTCJul 11, 12:15 UTC35m
2026-07-11 ABL8132 - Jul 11, 10:30 UTCJul 11, 10:45 UTC15m
2026-07-11 ABL8021 - Jul 11, 06:50 UTCJul 11, 07:20 UTC30m
2026-07-11 ABL8028 - Jul 11, 05:05 UTCJul 11, 05:45 UTC40m
2026-07-11 ABL8109 - Jul 11, 02:55 UTCJul 11, 03:10 UTC15m
2026-07-11 ABL8102 - Jul 11, 01:40 UTCJul 11, 01:55 UTC15m
2026-07-10 ABL8105 - Jul 10, 23:15 UTCJul 10, 23:35 UTC20m
2026-07-10 ABL382 - Jul 10, 20:25 UTCJul 10, 21:05 UTC40m
2026-07-10 ABL382 - Jul 10, 18:05 UTCJul 10, 18:15 UTC10m
2026-07-10 ABL381 - Jul 10, 13:25 UTCJul 10, 13:50 UTC25m
2026-07-10 ABL1315 - Jul 10, 11:05 UTCJul 10, 12:00 UTC55m
2026-07-10 ABL1325 - Jul 10, 08:45 UTCJul 10, 09:45 UTC1h 0m
2026-07-10 ABL338 PUS → PUS Jul 10, 00:50 UTCJul 10, 07:05 UTC6h 15m
2026-07-09 ABL8803 GMP → PUS Jul 9, 22:35 UTCJul 9, 23:15 UTC40m
2026-07-09 ABL8826 PUS → GMP Jul 9, 12:30 UTCJul 9, 13:10 UTC40m
2026-07-09 ABL8116 - Jul 9, 10:55 UTCJul 9, 11:25 UTC30m
2026-07-09 ABL8117 - Jul 9, 09:00 UTCJul 9, 09:20 UTC20m
2026-07-09 ABL8110 - Jul 9, 07:40 UTCJul 9, 08:00 UTC20m
2026-07-09 ABL8111 - Jul 9, 05:20 UTCJul 9, 05:40 UTC20m
2026-07-09 ABL8811 GMP → PUS Jul 9, 03:10 UTCJul 9, 04:00 UTC50m
2026-07-09 ABL8040 - Jul 9, 01:10 UTCJul 9, 02:00 UTC50m
2026-07-08 ABL8105 - Jul 8, 23:20 UTCJul 8, 23:30 UTC10m
2026-07-08 ABL8134 - Jul 8, 10:50 UTCJul 8, 11:20 UTC30m

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 HL8365 page for operator, model, and routing details .

Mode-S 71C365 frequently asked

What is Mode-S code 71C365?
71C365 is an ICAO 24-bit transponder address. Allocated to Korea, South. Assigned to HL8365.
Where is Mode-S 71C365 registered?
Mode-S code 71C365 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 71C365 broadcasting right now?
No active broadcast right now. Last signal was 3h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 71C365, octal 34341545, decimal 7,455,589.
What flights does 71C365 operate?
Mode-S 71C365 has broadcast 20 distinct callsigns, including ABL8021, ABL8028, ABL8824, ABL8025, ABL8132.