Apparatus

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sensors Mode-S transponder

71C522

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

Currently assigned to HL8522 · AIRBUS A-350-900

Hex
71C522
Octal
34342442
Decimal
7,456,034
Country
KR
Tail
HL8522
Type
A359
No current signal · last broadcast Jul 26, 07:10 UTC
Flights observed
280
Distinct callsigns
20
Country
KR
Last broadcast
Jul 26, 07:10 UTC

Last known position

Most recent position reported by Mode-S 71C522.

Country allocation

The ICAO 24-bit address 71C522 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
AAR502 - 21 2026-07-12
AAR761 Asiana Airlines 20 2026-07-24
AAR762 Asiana Airlines 19 2026-07-24
AAR501 - 19 2026-07-11
AAR522 Asiana Airlines 18 2026-07-24
AAR752 - 14 2026-07-12
AAR751 - 14 2026-07-12
AAR521 - 13 2026-07-22
AAR512 Asiana Airlines 12 2026-07-25
AAR212 Asiana Airlines 11 2026-07-18
AAR546 - 10 2026-07-01
AAR545 - 10 2026-06-30
AAR511 Asiana Airlines 10 2026-07-25
AAR211 - 8 2026-07-19
AAR742 - 7 2026-07-16
AAR741 - 7 2026-07-16
AAR582 - 5 2026-06-17
AAR542 Asiana Airlines 5 2026-06-07
AAR113 Asiana Airlines 5 2026-05-16
AAR581 - 4 2026-06-16

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-25 AAR512 BCN → ICN Jul 25, 19:35 UTCJul 26, 07:05 UTC11h 31m
2026-07-25 AAR511 ICN → BCN Jul 25, 03:30 UTCJul 25, 16:50 UTC13h 20m
2026-07-24 AAR762 CGK → ICN Jul 24, 16:30 UTCJul 24, 21:45 UTC5h 15m
2026-07-24 AAR762 CGK → ICN Jul 24, 14:50 UTCJul 24, 15:00 UTC10m
2026-07-24 AAR761 ICN → CGK Jul 24, 12:40 UTCJul 24, 13:00 UTC20m
2026-07-24 AAR761 ICN → CGK Jul 24, 06:35 UTCJul 24, 11:20 UTC4h 45m
2026-07-24 AAR522 LHR → ICN Jul 24, 03:10 UTCJul 24, 03:25 UTC15m
2026-07-23 AAR522 LHR → ICN Jul 23, 15:55 UTCJul 24, 02:15 UTC10h 20m
2026-07-22 AAR521 ICN → LHR Jul 22, 23:20 UTCJul 23, 12:55 UTC13h 35m
2026-07-22 AAR203 LAX → ICN Jul 22, 15:50 UTCJul 22, 17:55 UTC2h 5m
2026-07-21 AAR204 ICN → LAX Jul 21, 14:00 UTCJul 22, 00:15 UTC10h 15m
2026-07-21 AAR204 ICN → LAX Jul 21, 13:05 UTCJul 21, 13:30 UTC25m
2026-07-21 AAR522 LHR → ICN Jul 21, 03:00 UTCJul 21, 03:20 UTC20m
2026-07-20 AAR522 LHR → ICN Jul 20, 16:10 UTCJul 21, 02:10 UTC9h 59m
2026-07-20 AAR521 - Jul 20, 00:30 UTCJul 20, 13:15 UTC12h 45m
2026-07-19 AAR521 - Jul 19, 23:20 UTCJul 19, 23:45 UTC25m
2026-07-19 AAR211 SFO → ICN Jul 19, 07:00 UTCJul 19, 18:10 UTC11h 10m
2026-07-18 AAR212 ICN → SFO Jul 18, 13:10 UTCJul 18, 23:40 UTC10h 30m
2026-07-18 AAR562 FCO → ICN Jul 18, 06:10 UTCJul 18, 06:30 UTC20m
2026-07-17 AAR562 FCO → ICN Jul 17, 20:15 UTCJul 18, 05:15 UTC9h 1m
2026-07-17 AAR561 - Jul 17, 06:15 UTCJul 17, 17:35 UTC11h 20m
2026-07-17 AAR561 - Jul 17, 05:04 UTCJul 17, 05:25 UTC20m
2026-07-16 AAR742 - Jul 16, 21:40 UTCJul 17, 00:25 UTC2h 45m
2026-07-16 AAR742 - Jul 16, 19:30 UTCJul 16, 19:45 UTC15m
2026-07-16 AAR741 - Jul 16, 15:30 UTCJul 16, 15:55 UTC25m
2026-07-16 AAR741 - Jul 16, 11:05 UTCJul 16, 13:45 UTC2h 40m
2026-07-16 AAR512 - Jul 16, 06:15 UTCJul 16, 06:45 UTC30m
2026-07-15 AAR512 - Jul 15, 19:25 UTCJul 16, 05:25 UTC10h 0m
2026-07-15 AAR511 - Jul 15, 04:45 UTCJul 15, 17:20 UTC12h 35m
2026-07-15 AAR511 - Jul 15, 03:30 UTCJul 15, 03:45 UTC15m
2026-07-14 AAR742 - Jul 14, 21:25 UTCJul 15, 00:20 UTC2h 54m
2026-07-14 AAR742 - Jul 14, 19:15 UTCJul 14, 19:30 UTC15m
2026-07-14 AAR741 - Jul 14, 15:35 UTCJul 14, 15:50 UTC15m
2026-07-14 AAR741 - Jul 14, 10:55 UTCJul 14, 13:35 UTC2h 40m
2026-07-14 AAR512 - Jul 14, 06:10 UTCJul 14, 06:35 UTC25m
2026-07-13 AAR512 - Jul 13, 19:25 UTCJul 14, 05:25 UTC10h 0m
2026-07-13 AAR511 ICN → BCN Jul 13, 03:25 UTCJul 13, 17:00 UTC13h 35m
2026-07-12 AAR752 - Jul 12, 18:20 UTCJul 12, 21:35 UTC3h 15m
2026-07-12 AAR751 - Jul 12, 13:01 UTCJul 12, 13:20 UTC20m
2026-07-12 AAR751 - Jul 12, 07:50 UTCJul 12, 10:05 UTC2h 15m
2026-07-12 AAR502 - Jul 12, 04:25 UTCJul 12, 04:45 UTC20m
2026-07-11 AAR502 - Jul 11, 17:25 UTCJul 12, 03:35 UTC10h 10m
2026-07-11 AAR501 - Jul 11, 02:40 UTCJul 11, 14:50 UTC12h 10m
2026-07-11 AAR501 - Jul 11, 01:25 UTCJul 11, 01:45 UTC20m
2026-07-10 AAR762 - Jul 10, 16:35 UTCJul 10, 21:40 UTC5h 6m
2026-07-10 AAR762 - Jul 10, 15:05 UTCJul 10, 15:15 UTC10m
2026-07-10 AAR761 - Jul 10, 12:50 UTCJul 10, 13:05 UTC15m
2026-07-10 AAR761 - Jul 10, 06:35 UTCJul 10, 11:20 UTC4h 45m
2026-07-10 AAR522 - Jul 10, 02:50 UTCJul 10, 03:15 UTC25m
2026-07-09 AAR522 - Jul 9, 15:55 UTCJul 10, 01:55 UTC10h 0m

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 HL8522 page for operator, model, and routing details .

Mode-S 71C522 frequently asked

What is Mode-S code 71C522?
71C522 is an ICAO 24-bit transponder address. Allocated to Korea, South. Assigned to HL8522.
Where is Mode-S 71C522 registered?
Mode-S code 71C522 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 71C522 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 07:10 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 71C522, octal 34342442, decimal 7,456,034.
What flights does 71C522 operate?
Mode-S 71C522 has broadcast 20 distinct callsigns, including AAR502, AAR761, AAR762, AAR501, AAR522.