Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

71C004

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

Currently assigned to HL8004 · AIRBUS A-321

Hex
71C004
Octal
34340004
Decimal
7,454,724
Country
KR
Tail
HL8004
Type
A321
No current signal · last broadcast 1d ago
Flights observed
395
Distinct callsigns
20
Country
KR
Last broadcast
1d ago

Last known position

Most recent position reported by Mode-S 71C004.

Country allocation

The ICAO 24-bit address 71C004 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
AAR8708 Asiana Airlines 18 2026-06-06
AAR8936 Asiana Airlines 17 2026-06-06
AAR8985 Asiana Airlines 16 2026-06-06
AAR8900 Asiana Airlines 16 2026-06-05
AAR8921 Asiana Airlines 15 2026-06-05
AAR8707 Asiana Airlines 15 2026-06-06
AAR8996 Asiana Airlines 10 2026-06-09
AAR8993 Asiana Airlines 10 2026-06-08
AAR8949 Asiana Airlines 10 2026-06-09
AAR8948 Asiana Airlines 9 2026-06-08
AAR8927 Asiana Airlines 9 2026-06-08
AAR8920 Asiana Airlines 9 2026-06-09
AAR8902 Asiana Airlines 9 2026-06-08
AAR8901 Asiana Airlines 9 2026-06-07
AAR8736 Asiana Airlines 9 2026-06-08
AAR8735 Asiana Airlines 9 2026-06-08
AAR8953 Asiana Airlines 8 2026-05-20
AAR8704 Asiana Airlines 8 2026-06-02
AAR8703 Asiana Airlines 8 2026-06-02
AAR8904 Asiana Airlines 7 2026-05-19

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-13 AAR113 KIX → ICN Jul 13, 11:05 UTCJul 13, 12:30 UTC1h 25m
2026-07-13 AAR114 ICN → KIX Jul 13, 08:01 UTCJul 13, 09:20 UTC1h 20m
2026-07-13 AAR151 - Jul 13, 04:10 UTCJul 13, 05:55 UTC1h 45m
2026-07-13 AAR152 - Jul 13, 00:55 UTCJul 13, 02:40 UTC1h 45m
2026-07-12 AAR113 KIX → ICN Jul 12, 11:25 UTCJul 12, 12:45 UTC1h 20m
2026-07-12 AAR114 ICN → KIX Jul 12, 08:30 UTCJul 12, 09:55 UTC1h 25m
2026-07-12 AAR151 - Jul 12, 04:10 UTCJul 12, 06:01 UTC1h 50m
2026-07-12 AAR152 - Jul 12, 01:00 UTCJul 12, 02:35 UTC1h 35m
2026-07-11 AAR378 - Jul 11, 13:10 UTCJul 11, 13:35 UTC25m
2026-07-11 AAR377 - Jul 11, 10:20 UTCJul 11, 10:40 UTC20m
2026-07-11 AAR121 - Jul 11, 03:10 UTCJul 11, 04:40 UTC1h 30m
2026-07-11 AAR122 - Jul 11, 00:30 UTCJul 11, 01:50 UTC1h 20m
2026-07-10 AAR3523 - Jul 10, 12:45 UTCJul 10, 13:05 UTC20m
2026-07-10 AAR3513 - Jul 10, 07:50 UTCJul 10, 08:15 UTC25m
2026-07-10 AAR121 - Jul 10, 03:15 UTCJul 10, 04:50 UTC1h 35m
2026-07-10 AAR122 - Jul 10, 00:25 UTCJul 10, 01:45 UTC1h 20m
2026-07-09 AAR117 KIX → ICN Jul 9, 15:30 UTCJul 9, 16:50 UTC1h 20m
2026-07-09 AAR118 ICN → KIX Jul 9, 12:05 UTCJul 9, 13:35 UTC1h 30m
2026-07-08 AAR9018 - Jul 8, 20:40 UTCJul 8, 21:20 UTC40m
2026-06-11 - - Jun 11, 19:15 UTCJun 11, 19:25 UTC10m
2026-06-11 AAR9017 - Jun 11, 16:25 UTCJun 11, 16:50 UTC25m
2026-06-11 AAR802A GMP → ICN Jun 11, 12:50 UTCJun 11, 13:05 UTC15m
2026-06-11 AAR3365 PEK → GMP Jun 11, 10:50 UTCJun 11, 11:15 UTC25m
2026-06-11 AAR3365 PEK → GMP Jun 11, 09:45 UTCJun 11, 09:55 UTC10m
2026-06-11 AAR3355 GMP → PEK Jun 11, 06:35 UTCJun 11, 07:00 UTC25m
2026-06-11 AAR1135 KIX → GMP Jun 11, 02:25 UTCJun 11, 03:50 UTC1h 25m
2026-06-10 AAR1145 GMP → KIX Jun 10, 23:20 UTCJun 11, 00:35 UTC1h 15m
2026-06-10 AAR8994 CJU → GMP Jun 10, 12:30 UTCJun 10, 13:00 UTC30m
2026-06-10 AAR8935 GMP → CJU Jun 10, 01:55 UTCJun 10, 02:20 UTC25m
2026-06-09 AAR8734 RSU → GMP Jun 9, 23:55 UTCJun 10, 00:25 UTC30m
2026-06-09 AAR8733 GMP → RSU Jun 9, 22:15 UTCJun 9, 22:35 UTC20m
2026-06-09 AAR8996 CJU → GMP Jun 9, 12:30 UTCJun 9, 13:00 UTC30m
2026-06-09 AAR8126 CJU → TAE Jun 9, 09:15 UTCJun 9, 09:25 UTC10m
2026-06-09 AAR8949 GMP → CJU Jun 9, 03:40 UTCJun 9, 04:05 UTC25m
2026-06-09 AAR8920 CJU → GMP Jun 9, 01:55 UTCJun 9, 02:20 UTC25m
2026-06-08 AAR8927 GMP → CJU Jun 8, 23:50 UTCJun 9, 00:10 UTC20m
2026-06-08 AAR8902 CJU → GMP Jun 8, 22:05 UTCJun 8, 22:30 UTC25m
2026-06-08 AAR8993 GMP → CJU Jun 8, 12:00 UTCJun 8, 12:20 UTC20m
2026-06-08 AAR8736 RSU → GMP Jun 8, 09:45 UTCJun 8, 10:15 UTC30m
2026-06-08 AAR8735 GMP → RSU Jun 8, 08:10 UTCJun 8, 08:35 UTC25m
2026-06-08 AAR8948 CJU → GMP Jun 8, 06:30 UTCJun 8, 07:05 UTC35m
2026-06-07 AAR8901 GMP → CJU Jun 7, 21:45 UTCJun 7, 22:15 UTC30m
2026-06-07 AAR8996 CJU → GMP Jun 7, 13:10 UTCJun 7, 13:40 UTC30m
2026-06-07 AAR8127 - Jun 7, 11:15 UTCJun 7, 11:25 UTC10m
2026-06-07 AAR8126 CJU → TAE Jun 7, 09:15 UTCJun 7, 09:25 UTC10m
2026-06-07 AAR8949 GMP → CJU Jun 7, 03:40 UTCJun 7, 04:05 UTC25m
2026-06-07 AAR8920 CJU → GMP Jun 7, 01:55 UTCJun 7, 02:19 UTC25m
2026-06-06 AAR8927 GMP → CJU Jun 6, 23:44 UTCJun 7, 00:10 UTC25m
2026-06-06 AAR8902 CJU → GMP Jun 6, 22:05 UTCJun 6, 22:39 UTC35m
2026-06-06 AAR8985 GMP → CJU Jun 6, 10:30 UTCJun 6, 10:55 UTC25m

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 HL8004 page for operator, model, and routing details .

Mode-S 71C004 frequently asked

What is Mode-S code 71C004?
71C004 is an ICAO 24-bit transponder address. Allocated to Korea, South. Assigned to HL8004.
Where is Mode-S 71C004 registered?
Mode-S code 71C004 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 71C004 broadcasting right now?
No active broadcast right now. Last signal was 1d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 71C004, octal 34340004, decimal 7,454,724.
What flights does 71C004 operate?
Mode-S 71C004 has broadcast 20 distinct callsigns, including AAR8708, AAR8936, AAR8985, AAR8900, AAR8921.