Apparatus

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sensors Mode-S transponder

71BD78

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

Currently assigned to HL7578 · AIRBUS A-350-900

Hex
71BD78
Octal
34336570
Decimal
7,454,072
Country
KR
Tail
HL7578
Type
A359
Broadcasting now · callsign AAR115 · 34,000 ft
Flights observed
136
Distinct callsigns
20
Country
KR
Last broadcast
13h ago

Current position

71BD78 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 71BD78 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
AAR542 Asiana Airlines 12 2026-05-29
AAR541 Asiana Airlines 10 2026-05-28
AAR501 Asiana Airlines 9 2026-05-18
AAR752 Asiana Airlines 8 2026-05-01
AAR751 Asiana Airlines 8 2026-05-01
AAR511 Asiana Airlines 8 2026-05-21
AAR512 Asiana Airlines 7 2026-05-22
AAR502 Asiana Airlines 7 2026-05-19
AAR762 Asiana Airlines 6 2026-05-19
AAR761 Asiana Airlines 6 2026-05-19
AAR521 Asiana Airlines 6 2026-05-14
AAR522 Asiana Airlines 4 2026-05-15
AAR742 Asiana Airlines 3 2026-05-25
AAR741 Asiana Airlines 3 2026-05-25
AAR546 Asiana Airlines 3 2026-05-10
AAR212 Asiana Airlines 3 2026-05-22
AAR211 Asiana Airlines 3 2026-05-23
AAR134 Asiana Airlines 3 2026-05-25
AAR133 Asiana Airlines 3 2026-05-25
AAR116 Asiana Airlines 3 2026-05-29

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-29 AAR116 ICN → KIX May 29, 10:50 UTCMay 29, 12:10 UTC1h 20m
2026-05-29 AAR542 FRA → ICN May 29, 04:40 UTCMay 29, 05:05 UTC25m
2026-05-28 AAR542 FRA → ICN May 28, 18:25 UTCMay 29, 03:55 UTC9h 30m
2026-05-28 AAR541 ICN → FRA May 28, 03:55 UTCMay 28, 16:10 UTC12h 15m
2026-05-28 AAR541 ICN → FRA May 28, 02:35 UTCMay 28, 02:50 UTC15m
2026-05-27 AAR113 KIX → ICN May 27, 11:10 UTCMay 27, 12:35 UTC1h 25m
2026-05-27 AAR114 ICN → KIX May 27, 08:05 UTCMay 27, 09:25 UTC1h 20m
2026-05-27 AAR542 FRA → ICN May 27, 04:59 UTCMay 27, 05:24 UTC25m
2026-05-26 AAR542 FRA → ICN May 26, 18:30 UTCMay 27, 04:14 UTC9h 45m
2026-05-26 AAR541 ICN → FRA May 26, 03:40 UTCMay 26, 15:24 UTC11h 45m
2026-05-26 AAR541 ICN → FRA May 26, 02:24 UTCMay 26, 02:39 UTC15m
2026-05-25 AAR742 BKK → ICN May 25, 18:55 UTCMay 25, 23:45 UTC4h 50m
2026-05-25 AAR741 ICN → BKK May 25, 10:55 UTCMay 25, 15:50 UTC4h 55m
2026-05-25 AAR133 FUK → ICN May 25, 08:10 UTCMay 25, 08:40 UTC30m
2026-05-25 AAR134 ICN → FUK May 25, 05:15 UTCMay 25, 06:05 UTC50m
2026-05-25 AAR115 KIX → ICN May 25, 01:55 UTCMay 25, 02:25 UTC30m
2026-05-24 AAR116 ICN → KIX May 24, 11:00 UTCMay 24, 12:30 UTC1h 30m
2026-05-23 AAR211 SFO → ICN May 23, 07:00 UTCMay 23, 18:40 UTC11h 40m
2026-05-22 AAR212 ICN → SFO May 22, 13:10 UTCMay 22, 22:45 UTC9h 35m
2026-05-22 AAR512 BCN → ICN May 22, 06:55 UTCMay 22, 07:20 UTC25m
2026-05-21 AAR512 BCN → ICN May 21, 19:25 UTCMay 22, 00:05 UTC4h 40m
2026-05-21 AAR511 ICN → BCN May 21, 03:30 UTCMay 21, 17:05 UTC13h 35m
2026-05-20 AAR712 TPE → ICN May 20, 04:45 UTCMay 20, 06:50 UTC2h 5m
2026-05-20 AAR711 ICN → TPE May 20, 00:05 UTCMay 20, 02:15 UTC2h 10m
2026-05-19 AAR762 CGK → ICN May 19, 16:35 UTCMay 19, 21:45 UTC5h 10m
2026-05-19 AAR762 CGK → ICN May 19, 15:00 UTCMay 19, 15:10 UTC10m
2026-05-19 AAR761 ICN → CGK May 19, 07:10 UTCMay 19, 11:55 UTC4h 45m
2026-05-19 AAR502 CDG → ICN May 19, 04:35 UTCMay 19, 04:55 UTC20m
2026-05-18 AAR502 CDG → ICN May 18, 17:25 UTCMay 19, 03:45 UTC10h 19m
2026-05-18 AAR501 ICN → CDG May 18, 02:45 UTCMay 18, 15:00 UTC12h 15m
2026-05-18 AAR501 ICN → CDG May 18, 01:30 UTCMay 18, 01:55 UTC25m
2026-05-17 AAR762 CGK → ICN May 17, 17:20 UTCMay 17, 22:45 UTC5h 25m
2026-05-17 AAR762 CGK → ICN May 17, 15:45 UTCMay 17, 15:55 UTC10m
2026-05-17 AAR761 ICN → CGK May 17, 13:40 UTCMay 17, 13:50 UTC10m
2026-05-17 AAR761 ICN → CGK May 17, 07:40 UTCMay 17, 12:05 UTC4h 25m
2026-05-17 AAR542 FRA → ICN May 17, 05:00 UTCMay 17, 05:25 UTC25m
2026-05-16 AAR542 FRA → ICN May 16, 18:00 UTCMay 16, 21:55 UTC3h 55m
2026-05-16 AAR541 ICN → FRA May 16, 10:50 UTCMay 16, 15:01 UTC4h 10m
2026-05-16 AAR541 ICN → FRA May 16, 02:25 UTCMay 16, 02:40 UTC15m
2026-05-15 AAR762 CGK → ICN May 15, 16:25 UTCMay 15, 21:20 UTC4h 55m
2026-05-15 AAR761 ICN → CGK May 15, 06:50 UTCMay 15, 11:35 UTC4h 45m
2026-05-15 AAR522 LHR → ICN May 15, 04:30 UTCMay 15, 04:50 UTC20m
2026-05-14 AAR522 LHR → ICN May 14, 16:50 UTCMay 14, 21:20 UTC4h 30m
2026-05-14 AAR521 ICN → LHR May 14, 08:00 UTCMay 14, 13:20 UTC5h 20m
2026-05-13 AAR521 ICN → LHR May 13, 23:40 UTCMay 13, 23:55 UTC15m
2026-05-12 AAR512 BCN → ICN May 12, 19:15 UTCMay 12, 23:20 UTC4h 5m
2026-05-12 AAR511 ICN → BCN May 12, 11:55 UTCMay 12, 17:10 UTC5h 15m
2026-05-12 AAR511 ICN → BCN May 12, 03:25 UTCMay 12, 03:35 UTC10m
2026-05-11 AAR113 KIX → ICN May 11, 11:05 UTCMay 11, 12:30 UTC1h 25m
2026-05-11 AAR114 ICN → KIX May 11, 08:00 UTCMay 11, 09:25 UTC1h 25m

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 HL7578 page for operator, model, and routing details .

Mode-S 71BD78 frequently asked

What is Mode-S code 71BD78?
71BD78 is an ICAO 24-bit transponder address. Allocated to Korea, South. Assigned to HL7578.
Where is Mode-S 71BD78 registered?
Mode-S code 71BD78 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 71BD78 broadcasting right now?
Yes. Mode-S 71BD78 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 71BD78, octal 34336570, decimal 7,454,072.
What flights does 71BD78 operate?
Mode-S 71BD78 has broadcast 20 distinct callsigns, including AAR542, AAR541, AAR501, AAR752, AAR751.