Apparatus

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sensors Mode-S transponder

71C074

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

Currently assigned to HL8074 · AIRBUS A-321

Hex
71C074
Octal
34340164
Decimal
7,454,836
Country
KR
Tail
HL8074
Type
A321
Broadcasting now · callsign AAR1145 · 16,450 ft
Flights observed
612
Distinct callsigns
20
Country
KR
Last broadcast
12h ago

Current position

71C074 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 71C074 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
AAR8232 - 25 2026-07-09
AAR8995 - 24 2026-07-09
AAR8986 - 24 2026-07-09
AAR8981 - 24 2026-07-09
AAR8956 - 24 2026-07-09
AAR8233 - 24 2026-07-09
AAR8994 - 17 2026-07-05
AAR8935 - 17 2026-07-05
AAR8733 Asiana Airlines 16 2026-07-04
AAR8122 Asiana Airlines 16 2026-07-08
AAR8734 - 15 2026-07-04
AAR8996 - 13 2026-07-03
AAR8993 - 13 2026-07-06
AAR8123 - 13 2026-07-09
AAR8949 - 12 2026-07-11
AAR8927 - 12 2026-07-10
AAR8920 - 12 2026-07-11
AAR8902 - 11 2026-07-10
AAR8736 - 11 2026-07-06
AAR8735 - 11 2026-07-06

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 AAR3365 - Jul 14, 10:55 UTCJul 14, 11:25 UTC30m
2026-07-14 AAR3365 - Jul 14, 10:00 UTCJul 14, 10:10 UTC10m
2026-07-14 AAR3355 - Jul 14, 06:25 UTCJul 14, 06:55 UTC30m
2026-07-14 AAR1135 - Jul 14, 02:30 UTCJul 14, 03:50 UTC1h 20m
2026-07-13 AAR1145 - Jul 13, 23:25 UTCJul 14, 00:50 UTC1h 25m
2026-07-13 AAR3365 - Jul 13, 10:45 UTCJul 13, 11:10 UTC25m
2026-07-13 AAR3365 - Jul 13, 09:45 UTCJul 13, 09:55 UTC10m
2026-07-13 AAR3355 - Jul 13, 06:25 UTCJul 13, 06:50 UTC25m
2026-07-13 AAR1135 - Jul 13, 02:35 UTCJul 13, 03:50 UTC1h 15m
2026-07-12 AAR1145 GMP → KIX Jul 12, 23:25 UTCJul 13, 00:45 UTC1h 20m
2026-07-12 AAR3365 - Jul 12, 10:35 UTCJul 12, 11:01 UTC25m
2026-07-12 AAR3365 - Jul 12, 09:35 UTCJul 12, 09:45 UTC10m
2026-07-12 AAR3355 - Jul 12, 06:25 UTCJul 12, 06:45 UTC20m
2026-07-12 AAR1135 KIX → GMP Jul 12, 02:25 UTCJul 12, 03:45 UTC1h 20m
2026-07-11 AAR1145 GMP → KIX Jul 11, 23:20 UTCJul 12, 00:40 UTC1h 20m
2026-07-11 AAR803A ICN → GMP Jul 11, 21:30 UTCJul 11, 21:40 UTC10m
2026-07-11 AAR8496 - Jul 11, 13:45 UTCJul 11, 14:25 UTC40m
2026-07-11 AAR8127 - Jul 11, 11:35 UTCJul 11, 11:55 UTC20m
2026-07-11 AAR8126 - Jul 11, 10:20 UTCJul 11, 10:40 UTC20m
2026-07-11 AAR8949 - Jul 11, 03:40 UTCJul 11, 04:15 UTC35m
2026-07-11 AAR8920 - Jul 11, 01:55 UTCJul 11, 02:35 UTC40m
2026-07-10 AAR8927 - Jul 10, 23:45 UTCJul 11, 00:20 UTC35m
2026-07-10 AAR8902 - Jul 10, 21:55 UTCJul 10, 22:35 UTC40m
2026-07-10 AAR8239 - Jul 10, 12:25 UTCJul 10, 12:55 UTC30m
2026-07-10 AAR8238 - Jul 10, 10:35 UTCJul 10, 11:10 UTC35m
2026-07-10 AAR8235 - Jul 10, 08:35 UTCJul 10, 09:00 UTC25m
2026-07-10 AAR8234 - Jul 10, 06:45 UTCJul 10, 07:10 UTC25m
2026-07-10 AAR8953 - Jul 10, 04:35 UTCJul 10, 05:05 UTC30m
2026-07-10 AAR8704 KWJ → GMP Jul 10, 02:20 UTCJul 10, 03:00 UTC40m
2026-07-10 AAR8703 - Jul 10, 00:40 UTCJul 10, 01:05 UTC25m
2026-07-09 AAR8904 - Jul 9, 22:30 UTCJul 9, 23:10 UTC40m
2026-07-09 AAR8995 - Jul 9, 12:45 UTCJul 9, 13:20 UTC35m
2026-07-09 AAR8986 - Jul 9, 11:05 UTCJul 9, 11:50 UTC45m
2026-07-09 AAR8981 - Jul 9, 09:00 UTCJul 9, 09:35 UTC35m
2026-07-09 AAR8956 - Jul 9, 07:10 UTCJul 9, 07:55 UTC45m
2026-07-09 AAR8233 - Jul 9, 04:30 UTCJul 9, 05:05 UTC35m
2026-07-09 AAR8232 - Jul 9, 02:50 UTCJul 9, 03:15 UTC25m
2026-07-09 AAR8123 - Jul 9, 00:45 UTCJul 9, 01:05 UTC20m
2026-07-08 AAR8122 CJU → TAE Jul 8, 23:25 UTCJul 8, 23:40 UTC15m
2026-07-08 AAR8995 - Jul 8, 12:40 UTCJul 8, 13:15 UTC35m
2026-07-08 AAR8986 - Jul 8, 11:00 UTCJul 8, 11:40 UTC40m
2026-07-08 AAR8981 - Jul 8, 09:00 UTCJul 8, 09:35 UTC35m
2026-07-08 AAR8956 - Jul 8, 07:20 UTCJul 8, 08:05 UTC45m
2026-07-08 AAR891A - Jul 8, 05:05 UTCJul 8, 05:45 UTC40m
2026-07-08 AAR8232 - Jul 8, 02:35 UTCJul 8, 03:50 UTC1h 15m
2026-07-08 AAR8123 - Jul 8, 00:40 UTCJul 8, 01:00 UTC20m
2026-07-07 AAR8122 CJU → TAE Jul 7, 23:25 UTCJul 7, 23:45 UTC20m
2026-07-07 AAR8995 - Jul 7, 12:25 UTCJul 7, 13:00 UTC35m
2026-07-07 AAR8986 - Jul 7, 10:50 UTCJul 7, 11:20 UTC30m
2026-07-07 AAR8981 - Jul 7, 08:40 UTCJul 7, 09:20 UTC40m

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 HL8074 page for operator, model, and routing details .

Mode-S 71C074 frequently asked

What is Mode-S code 71C074?
71C074 is an ICAO 24-bit transponder address. Allocated to Korea, South. Assigned to HL8074.
Where is Mode-S 71C074 registered?
Mode-S code 71C074 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 71C074 broadcasting right now?
Yes. Mode-S 71C074 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 71C074, octal 34340164, decimal 7,454,836.
What flights does 71C074 operate?
Mode-S 71C074 has broadcast 20 distinct callsigns, including AAR8232, AAR8995, AAR8986, AAR8981, AAR8956.