Apparatus

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sensors Mode-S transponder

71C055

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

Currently assigned to HL8055 · AIRBUS A-320

Hex
71C055
Octal
34340125
Decimal
7,454,805
Country
KR
Tail
HL8055
Type
A320
Broadcasting now · callsign ABL8817 · 12,700 ft
Flights observed
527
Distinct callsigns
20
Country
KR
Last broadcast
Jul 26, 12:45 UTC

Current position

71C055 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 71C055 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
ABL8024 Air Busan 23 2026-07-26
ABL8813 Air Busan 20 2026-07-24
ABL8806 Air Busan 20 2026-07-24
ABL8139 Air Busan 20 2026-07-25
ABL8827 Air Busan 19 2026-07-23
ABL8113 Air Busan 19 2026-07-25
ABL8112 Air Busan 19 2026-07-25
ABL8822 Air Busan 18 2026-07-23
ABL8821 Air Busan 18 2026-07-23
ABL8816 Air Busan 18 2026-07-23
ABL8138 Air Busan 18 2026-07-25
ABL8818 - 17 2026-07-21
ABL8809 Air Busan 17 2026-07-21
ABL8807 Air Busan 17 2026-07-24
ABL8802 Air Busan 17 2026-07-23
ABL8019 Air Busan 17 2026-07-21
ABL8804 Air Busan 16 2026-07-21
ABL8182 Air Busan 16 2026-07-25
ABL8817 Air Busan 14 2026-07-21
ABL8808 Air Busan 14 2026-07-21

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 ABL8024 CJU → GMP Jul 26, 12:05 UTCJul 26, 12:40 UTC35m
2026-07-26 ABL8305 USN → CJU Jul 26, 09:15 UTCJul 26, 09:35 UTC20m
2026-07-26 ABL8304 CJU → USN Jul 26, 07:55 UTCJul 26, 08:10 UTC15m
2026-07-26 ABL8115 PUS → CJU Jul 26, 05:40 UTCJul 26, 06:00 UTC20m
2026-07-26 ABL8811 GMP → PUS Jul 26, 02:55 UTCJul 26, 03:35 UTC40m
2026-07-26 ABL8872 PUS → GMP Jul 26, 01:10 UTCJul 26, 01:55 UTC45m
2026-07-25 ABL8138 CJU → PUS Jul 25, 11:40 UTCJul 25, 12:10 UTC30m
2026-07-25 ABL8139 PUS → CJU Jul 25, 09:50 UTCJul 25, 10:25 UTC35m
2026-07-25 ABL8112 CJU → PUS Jul 25, 08:30 UTCJul 25, 08:50 UTC20m
2026-07-25 ABL8113 PUS → CJU Jul 25, 06:15 UTCJul 25, 06:35 UTC20m
2026-07-25 ABL8182 CJU → PUS Jul 25, 04:55 UTCJul 25, 05:10 UTC15m
2026-07-25 ABL8183 PUS → CJU Jul 25, 02:50 UTCJul 25, 03:10 UTC20m
2026-07-25 ABL8136 CJU → PUS Jul 25, 01:25 UTCJul 25, 01:45 UTC20m
2026-07-24 ABL8133 PUS → CJU Jul 24, 23:10 UTCJul 24, 23:25 UTC15m
2026-07-24 ABL8114 CJU → PUS Jul 24, 11:05 UTCJul 24, 11:40 UTC35m
2026-07-24 ABL8305 USN → CJU Jul 24, 09:10 UTCJul 24, 09:30 UTC20m
2026-07-24 ABL8304 CJU → USN Jul 24, 07:50 UTCJul 24, 08:05 UTC15m
2026-07-24 ABL8115 PUS → CJU Jul 24, 05:50 UTCJul 24, 06:10 UTC20m
2026-07-24 ABL8813 GMP → PUS Jul 24, 04:00 UTCJul 24, 04:50 UTC50m
2026-07-24 ABL8806 PUS → GMP Jul 24, 02:05 UTCJul 24, 02:45 UTC40m
2026-07-24 ABL8807 GMP → PUS Jul 24, 00:25 UTCJul 24, 01:05 UTC40m
2026-07-23 ABL8802 PUS → GMP Jul 23, 22:35 UTCJul 23, 23:20 UTC45m
2026-07-23 ABL8827 GMP → PUS Jul 23, 11:35 UTCJul 23, 12:20 UTC45m
2026-07-23 ABL8822 PUS → GMP Jul 23, 10:00 UTCJul 23, 10:45 UTC45m
2026-07-23 ABL8821 GMP → PUS Jul 23, 08:15 UTCJul 23, 08:55 UTC40m
2026-07-23 ABL8816 PUS → GMP Jul 23, 06:30 UTCJul 23, 07:15 UTC45m
2026-07-23 ABL8108 CJU → PUS Jul 23, 05:00 UTCJul 23, 05:20 UTC20m
2026-07-23 ABL8301 USN → CJU Jul 23, 03:00 UTCJul 23, 03:15 UTC15m
2026-07-23 ABL8300 CJU → USN Jul 23, 01:10 UTCJul 23, 01:30 UTC20m
2026-07-22 ABL8025 GMP → CJU Jul 22, 22:35 UTCJul 22, 23:10 UTC35m
2026-07-22 ABL8024 CJU → GMP Jul 22, 12:00 UTCJul 22, 12:40 UTC40m
2026-07-22 ABL8811 GMP → PUS Jul 22, 02:55 UTCJul 22, 03:40 UTC45m
2026-07-22 ABL8040 CJU → GMP Jul 22, 01:05 UTCJul 22, 01:50 UTC45m
2026-07-21 ABL8107 - Jul 21, 22:50 UTCJul 21, 23:10 UTC20m
2026-07-21 ABL8114 CJU → PUS Jul 21, 11:05 UTCJul 21, 11:25 UTC20m
2026-07-21 ABL8019 GMP → CJU Jul 21, 09:10 UTCJul 21, 09:45 UTC35m
2026-07-21 ABL8818 PUS → GMP Jul 21, 07:30 UTCJul 21, 08:15 UTC45m
2026-07-21 ABL8817 GMP → PUS Jul 21, 05:40 UTCJul 21, 06:25 UTC45m
2026-07-21 ABL8808 PUS → GMP Jul 21, 03:55 UTCJul 21, 04:40 UTC45m
2026-07-21 ABL8809 GMP → PUS Jul 21, 02:00 UTCJul 21, 02:40 UTC40m
2026-07-21 ABL8804 PUS → GMP Jul 21, 00:05 UTCJul 21, 00:45 UTC40m
2026-07-20 ABL8114 CJU → PUS Jul 20, 11:10 UTCJul 20, 11:30 UTC20m
2026-07-20 ABL8019 GMP → CJU Jul 20, 09:05 UTCJul 20, 09:40 UTC35m
2026-07-20 ABL8818 PUS → GMP Jul 20, 07:25 UTCJul 20, 08:10 UTC45m
2026-07-20 ABL8817 GMP → PUS Jul 20, 05:40 UTCJul 20, 06:25 UTC45m
2026-07-20 ABL8808 PUS → GMP Jul 20, 04:00 UTCJul 20, 04:45 UTC45m
2026-07-20 ABL8809 GMP → PUS Jul 20, 01:55 UTCJul 20, 02:45 UTC50m
2026-07-20 ABL8804 PUS → GMP Jul 20, 00:10 UTCJul 20, 00:55 UTC45m
2026-07-19 ABL8138 CJU → PUS Jul 19, 11:40 UTCJul 19, 12:00 UTC20m
2026-07-19 ABL8139 PUS → CJU Jul 19, 09:40 UTCJul 19, 09:55 UTC15m

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 HL8055 page for operator, model, and routing details .

Mode-S 71C055 frequently asked

What is Mode-S code 71C055?
71C055 is an ICAO 24-bit transponder address. Allocated to Korea, South. Assigned to HL8055.
Where is Mode-S 71C055 registered?
Mode-S code 71C055 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 71C055 broadcasting right now?
Yes. Mode-S 71C055 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 71C055, octal 34340125, decimal 7,454,805.
What flights does 71C055 operate?
Mode-S 71C055 has broadcast 20 distinct callsigns, including ABL8024, ABL8813, ABL8806, ABL8139, ABL8827.