Apparatus

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sensors Mode-S transponder

71C361

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

Currently assigned to HL8361 · AIRBUS A-350-900

Hex
71C361
Octal
34341541
Decimal
7,455,585
Country
KR
Tail
HL8361
Type
A359
No current signal · last broadcast 1h ago
Flights observed
227
Distinct callsigns
20
Country
KR
Last broadcast
1h ago

Last known position

Most recent position reported by Mode-S 71C361.

Country allocation

The ICAO 24-bit address 71C361 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
AAR522 - 15 2026-07-05
AAR521 Asiana Airlines 14 2026-07-04
AAR761 - 13 2026-07-11
AAR762 - 12 2026-07-11
AAR222 - 11 2026-07-12
AAR221 - 11 2026-07-12
AAR751 - 10 2026-07-03
AAR542 - 10 2026-07-03
AAR752 Asiana Airlines 8 2026-07-03
AAR541 - 8 2026-07-02
AAR741 Asiana Airlines 7 2026-07-19
AAR502 - 7 2026-07-09
AAR501 - 7 2026-07-08
AAR742 Asiana Airlines 6 2026-07-19
AAR734 - 6 2026-07-09
AAR548 - 6 2026-07-11
AAR512 - 6 2026-07-19
AAR511 - 6 2026-07-18
AAR547 - 5 2026-07-10
AAR212 - 5 2026-07-06

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-19 AAR742 BKK → ICN Jul 19, 21:30 UTCJul 20, 00:25 UTC2h 55m
2026-07-19 AAR742 BKK → ICN Jul 19, 19:20 UTCJul 19, 19:35 UTC15m
2026-07-19 AAR741 ICN → BKK Jul 19, 15:55 UTCJul 19, 16:05 UTC10m
2026-07-19 AAR741 ICN → BKK Jul 19, 11:15 UTCJul 19, 13:50 UTC2h 35m
2026-07-19 AAR512 - Jul 19, 06:30 UTCJul 19, 07:00 UTC30m
2026-07-18 AAR512 - Jul 18, 19:50 UTCJul 19, 05:45 UTC9h 55m
2026-07-18 AAR511 - Jul 18, 04:30 UTCJul 18, 16:50 UTC12h 20m
2026-07-18 AAR511 - Jul 18, 03:15 UTCJul 18, 03:35 UTC20m
2026-07-17 AAR742 - Jul 17, 19:15 UTCJul 18, 00:19 UTC5h 5m
2026-07-17 AAR741 - Jul 17, 16:10 UTCJul 17, 16:19 UTC10m
2026-07-17 AAR741 - Jul 17, 11:25 UTCJul 17, 14:15 UTC2h 50m
2026-07-17 AAR582 - Jul 17, 07:55 UTCJul 17, 08:20 UTC25m
2026-07-16 AAR582 - Jul 16, 22:05 UTCJul 17, 07:05 UTC9h 0m
2026-07-16 AAR581 - Jul 16, 07:40 UTCJul 16, 19:45 UTC12h 5m
2026-07-16 AAR581 - Jul 16, 06:25 UTCJul 16, 06:45 UTC20m
2026-07-15 AAR203 - Jul 15, 06:15 UTCJul 15, 18:15 UTC12h 0m
2026-07-14 AAR204 - Jul 14, 14:00 UTCJul 15, 01:20 UTC11h 19m
2026-07-14 AAR111 - Jul 14, 02:00 UTCJul 14, 03:20 UTC1h 20m
2026-07-13 AAR112 - Jul 13, 22:20 UTCJul 13, 23:40 UTC1h 20m
2026-07-12 AAR221 - Jul 12, 16:05 UTCJul 13, 06:25 UTC14h 20m
2026-07-12 AAR222 - Jul 12, 00:05 UTCJul 12, 13:35 UTC13h 30m
2026-07-11 AAR762 - Jul 11, 16:55 UTCJul 11, 22:01 UTC5h 5m
2026-07-11 AAR761 - Jul 11, 13:15 UTCJul 11, 13:35 UTC20m
2026-07-11 AAR761 - Jul 11, 06:40 UTCJul 11, 11:45 UTC5h 5m
2026-07-11 AAR548 - Jul 11, 03:50 UTCJul 11, 04:25 UTC35m
2026-07-10 AAR548 - Jul 10, 18:20 UTCJul 11, 03:10 UTC8h 51m
2026-07-10 AAR547 - Jul 10, 05:20 UTCJul 10, 16:20 UTC11h 0m
2026-07-10 AAR547 - Jul 10, 04:10 UTCJul 10, 04:30 UTC20m
2026-07-09 AAR734 - Jul 9, 20:00 UTCJul 9, 20:40 UTC40m
2026-07-09 AAR733 - Jul 9, 11:00 UTCJul 9, 11:40 UTC40m
2026-07-09 AAR502 - Jul 9, 04:25 UTCJul 9, 05:00 UTC35m
2026-07-08 AAR502 - Jul 8, 17:50 UTCJul 9, 03:35 UTC9h 45m
2026-07-08 AAR501 - Jul 8, 03:15 UTCJul 8, 15:30 UTC12h 15m
2026-07-08 AAR501 - Jul 8, 01:55 UTCJul 8, 02:15 UTC20m
2026-07-07 AAR211 - Jul 7, 07:15 UTCJul 7, 19:05 UTC11h 50m
2026-07-06 AAR212 ICN → SFO Jul 6, 12:35 UTCJul 6, 22:45 UTC10h 10m
2026-07-06 AAR101 - Jul 6, 04:10 UTCJul 6, 06:10 UTC2h 0m
2026-07-05 AAR102 ICN → NRT Jul 5, 23:45 UTCJul 6, 01:35 UTC1h 50m
2026-07-05 AAR762 - Jul 5, 16:25 UTCJul 5, 21:25 UTC5h 0m
2026-07-05 AAR761 - Jul 5, 12:35 UTCJul 5, 12:55 UTC20m
2026-07-05 AAR761 - Jul 5, 06:25 UTCJul 5, 11:00 UTC4h 35m
2026-07-05 AAR522 - Jul 5, 03:00 UTCJul 5, 03:20 UTC20m
2026-07-04 AAR522 - Jul 4, 16:05 UTCJul 5, 02:10 UTC10h 5m
2026-07-04 AAR521 ICN → LHR Jul 4, 00:25 UTCJul 4, 13:00 UTC12h 35m
2026-07-03 AAR521 ICN → LHR Jul 3, 23:20 UTCJul 3, 23:35 UTC15m
2026-07-03 AAR752 SIN → ICN Jul 3, 18:10 UTCJul 3, 21:10 UTC3h 0m
2026-07-03 AAR751 - Jul 3, 12:55 UTCJul 3, 13:15 UTC20m
2026-07-03 AAR751 - Jul 3, 07:35 UTCJul 3, 10:20 UTC2h 45m
2026-07-03 AAR542 - Jul 3, 04:45 UTCJul 3, 05:05 UTC20m
2026-07-02 AAR542 - Jul 2, 18:05 UTCJul 3, 03:50 UTC9h 45m

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 HL8361 page for operator, model, and routing details .

Mode-S 71C361 frequently asked

What is Mode-S code 71C361?
71C361 is an ICAO 24-bit transponder address. Allocated to Korea, South. Assigned to HL8361.
Where is Mode-S 71C361 registered?
Mode-S code 71C361 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 71C361 broadcasting right now?
No active broadcast right now. Last signal was 1h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 71C361, octal 34341541, decimal 7,455,585.
What flights does 71C361 operate?
Mode-S 71C361 has broadcast 20 distinct callsigns, including AAR522, AAR521, AAR761, AAR762, AAR222.