Apparatus

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sensors Mode-S transponder

71BD79

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

Currently assigned to HL7579 · AIRBUS A-350-900

Hex
71BD79
Octal
34336571
Decimal
7,454,073
Country
KR
Tail
HL7579
Type
A359
No current signal · last broadcast Jul 26, 22:15 UTC
Flights observed
264
Distinct callsigns
20
Country
KR
Last broadcast
Jul 26, 22:15 UTC

Last known position

Most recent position reported by Mode-S 71BD79.

Country allocation

The ICAO 24-bit address 71BD79 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
AAR761 Asiana Airlines 14 2026-07-20
AAR522 Asiana Airlines 14 2026-07-26
AAR511 - 14 2026-07-11
AAR502 - 14 2026-07-20
AAR762 Asiana Airlines 13 2026-07-20
AAR212 Asiana Airlines 13 2026-07-23
AAR512 - 12 2026-07-12
AAR211 Asiana Airlines 12 2026-07-24
AAR501 Asiana Airlines 11 2026-07-19
AAR752 - 10 2026-07-16
AAR751 - 10 2026-07-16
AAR548 - 10 2026-07-18
AAR582 - 9 2026-07-21
AAR581 - 9 2026-07-21
AAR547 - 9 2026-07-17
AAR521 Asiana Airlines 9 2026-07-25
AAR541 Asiana Airlines 8 2026-06-08
AAR742 - 6 2026-06-20
AAR741 Asiana Airlines 6 2026-06-20
AAR561 Asiana Airlines 6 2026-07-26

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 AAR562 FCO → ICN Jul 26, 20:00 UTCJul 26, 22:15 UTC2h 15m
2026-07-26 AAR561 ICN → FCO Jul 26, 06:45 UTCJul 26, 17:45 UTC11h 0m
2026-07-26 AAR561 ICN → FCO Jul 26, 05:35 UTCJul 26, 06:00 UTC25m
2026-07-26 AAR522 LHR → ICN Jul 26, 03:10 UTCJul 26, 03:30 UTC20m
2026-07-25 AAR522 LHR → ICN Jul 25, 16:00 UTCJul 26, 02:25 UTC10h 25m
2026-07-25 AAR521 ICN → LHR Jul 25, 00:25 UTCJul 25, 12:25 UTC12h 0m
2026-07-24 AAR521 ICN → LHR Jul 24, 23:15 UTCJul 24, 23:40 UTC25m
2026-07-24 AAR211 SFO → ICN Jul 24, 07:20 UTCJul 24, 18:10 UTC10h 50m
2026-07-23 AAR212 ICN → SFO Jul 23, 12:40 UTCJul 23, 23:15 UTC10h 35m
2026-07-23 AAR101 NRT → ICN Jul 23, 05:10 UTCJul 23, 07:10 UTC2h 0m
2026-07-23 AAR102 ICN → NRT Jul 23, 00:50 UTCJul 23, 02:50 UTC2h 0m
2026-07-21 AAR582 - Jul 21, 20:40 UTCJul 22, 00:00 UTC3h 20m
2026-07-21 AAR581 - Jul 21, 06:45 UTCJul 21, 18:35 UTC11h 50m
2026-07-21 AAR581 - Jul 21, 05:30 UTCJul 21, 05:55 UTC25m
2026-07-20 AAR762 CGK → ICN Jul 20, 16:30 UTCJul 20, 21:30 UTC5h 0m
2026-07-20 AAR762 CGK → ICN Jul 20, 14:50 UTCJul 20, 15:00 UTC10m
2026-07-20 AAR761 ICN → CGK Jul 20, 12:30 UTCJul 20, 12:50 UTC20m
2026-07-20 AAR761 ICN → CGK Jul 20, 06:30 UTCJul 20, 11:15 UTC4h 45m
2026-07-20 AAR502 - Jul 20, 04:10 UTCJul 20, 04:40 UTC30m
2026-07-19 AAR502 - Jul 19, 17:35 UTCJul 20, 03:25 UTC9h 50m
2026-07-19 AAR501 ICN → CDG Jul 19, 01:30 UTCJul 19, 14:55 UTC13h 25m
2026-07-18 AAR762 CGK → ICN Jul 18, 16:20 UTCJul 18, 21:20 UTC5h 0m
2026-07-18 AAR761 - Jul 18, 12:35 UTCJul 18, 12:50 UTC15m
2026-07-18 AAR761 - Jul 18, 06:30 UTCJul 18, 11:10 UTC4h 40m
2026-07-18 AAR548 - Jul 18, 03:45 UTCJul 18, 04:10 UTC25m
2026-07-17 AAR548 - Jul 17, 18:34 UTCJul 18, 03:00 UTC8h 26m
2026-07-17 AAR547 - Jul 17, 05:30 UTCJul 17, 16:15 UTC10h 45m
2026-07-17 AAR547 - Jul 17, 04:20 UTCJul 17, 04:44 UTC25m
2026-07-16 AAR752 - Jul 16, 18:05 UTCJul 16, 21:10 UTC3h 5m
2026-07-16 AAR751 - Jul 16, 13:00 UTCJul 16, 13:15 UTC15m
2026-07-16 AAR751 - Jul 16, 07:50 UTCJul 16, 10:29 UTC2h 40m
2026-07-16 AAR548 - Jul 16, 03:35 UTCJul 16, 04:05 UTC30m
2026-07-15 AAR548 - Jul 15, 18:20 UTCJul 16, 02:50 UTC8h 30m
2026-07-15 AAR547 - Jul 15, 05:25 UTCJul 15, 16:05 UTC10h 40m
2026-07-15 AAR547 - Jul 15, 04:10 UTCJul 15, 04:25 UTC15m
2026-07-14 AAR762 - Jul 14, 17:10 UTCJul 14, 22:20 UTC5h 10m
2026-07-14 AAR761 - Jul 14, 12:30 UTCJul 14, 12:50 UTC20m
2026-07-14 AAR761 - Jul 14, 06:35 UTCJul 14, 11:10 UTC4h 35m
2026-07-14 AAR522 - Jul 14, 03:50 UTCJul 14, 04:15 UTC25m
2026-07-13 AAR522 - Jul 13, 16:40 UTCJul 14, 03:05 UTC10h 25m
2026-07-13 AAR521 - Jul 13, 00:45 UTCJul 13, 13:10 UTC12h 25m
2026-07-12 AAR521 - Jul 12, 23:35 UTCJul 12, 23:55 UTC20m
2026-07-12 AAR512 - Jul 12, 06:35 UTCJul 12, 06:55 UTC20m
2026-07-11 AAR512 - Jul 11, 19:45 UTCJul 12, 05:45 UTC10h 0m
2026-07-11 AAR511 - Jul 11, 04:35 UTCJul 11, 17:00 UTC12h 25m
2026-07-11 AAR511 - Jul 11, 03:30 UTCJul 11, 03:45 UTC15m
2026-07-10 AAR734 - Jul 10, 20:10 UTCJul 10, 21:00 UTC50m
2026-07-10 AAR734 - Jul 10, 17:05 UTCJul 10, 17:15 UTC10m
2026-07-10 AAR733 - Jul 10, 11:00 UTCJul 10, 11:40 UTC40m
2026-07-10 AAR562 - Jul 10, 05:40 UTCJul 10, 06:05 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 HL7579 page for operator, model, and routing details .

Mode-S 71BD79 frequently asked

What is Mode-S code 71BD79?
71BD79 is an ICAO 24-bit transponder address. Allocated to Korea, South. Assigned to HL7579.
Where is Mode-S 71BD79 registered?
Mode-S code 71BD79 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 71BD79 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 22:15 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 71BD79, octal 34336571, decimal 7,454,073.
What flights does 71BD79 operate?
Mode-S 71BD79 has broadcast 20 distinct callsigns, including AAR761, AAR522, AAR511, AAR502, AAR762.