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sensors Mode-S transponder

71BF47

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

Currently assigned to HL7747 · AIRBUS A-330-300

Hex
71BF47
Octal
34337507
Decimal
7,454,535
Country
KR
Tail
HL7747
Type
A333
Broadcasting now · callsign AAR334 · 33,100 ft
Flights observed
333
Distinct callsigns
20
Country
KR
Last broadcast
Jul 26, 19:05 UTC

Current position

71BF47 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 71BF47 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
AAR731 - 17 2026-07-14
AAR108 Asiana Airlines 13 2026-07-25
AAR369 - 12 2026-07-16
AAR122 - 12 2026-06-24
AAR107 Asiana Airlines 12 2026-07-26
AAR370 - 11 2026-07-16
AAR358 - 11 2026-07-24
AAR121 - 11 2026-06-24
AAR359 - 8 2026-06-27
AAR357 - 8 2026-07-24
AAR178 - 8 2026-07-22
AAR177 - 8 2026-07-22
AAR732 - 7 2026-07-11
AAR701 Asiana Airlines 7 2026-07-24
AAR577 - 7 2026-07-09
AAR124 - 7 2026-06-28
AAR123 - 7 2026-06-28
AAR747 - 6 2026-07-02
AAR745 Asiana Airlines 6 2026-05-31
AAR714 - 6 2026-07-23

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 AAR368 PVG → ICN Jul 26, 11:45 UTCJul 26, 19:00 UTC7h 15m
2026-07-26 AAR334 PEK → ICN Jul 26, 09:10 UTCJul 26, 09:35 UTC25m
2026-07-26 AAR333 ICN → PEK Jul 26, 04:25 UTCJul 26, 04:55 UTC30m
2026-07-26 AAR107 NRT → ICN Jul 26, 00:45 UTCJul 26, 02:35 UTC1h 50m
2026-07-25 AAR108 ICN → NRT Jul 25, 10:20 UTCJul 25, 12:20 UTC2h 0m
2026-07-25 AAR702 MNL → ICN Jul 25, 04:45 UTCJul 25, 08:30 UTC3h 45m
2026-07-24 AAR701 ICN → MNL Jul 24, 23:25 UTCJul 25, 02:50 UTC3h 25m
2026-07-24 AAR358 - Jul 24, 19:45 UTCJul 24, 20:40 UTC55m
2026-07-24 AAR357 - Jul 24, 12:30 UTCJul 24, 13:15 UTC45m
2026-07-24 AAR366 PVG → ICN Jul 24, 09:50 UTCJul 24, 10:40 UTC50m
2026-07-24 AAR365 ICN → PVG Jul 24, 05:20 UTCJul 24, 06:05 UTC45m
2026-07-24 AAR111 KIX → ICN Jul 24, 01:50 UTCJul 24, 03:05 UTC1h 15m
2026-07-23 AAR112 ICN → KIX Jul 23, 22:15 UTCJul 23, 23:40 UTC1h 25m
2026-07-23 AAR714 TPE → ICN Jul 23, 09:30 UTCJul 23, 11:35 UTC2h 5m
2026-07-23 AAR713 ICN → TPE Jul 23, 05:40 UTCJul 23, 07:40 UTC2h 0m
2026-07-23 AAR302 - Jul 23, 03:25 UTCJul 23, 03:45 UTC20m
2026-07-23 AAR301 - Jul 23, 00:40 UTCJul 23, 01:05 UTC25m
2026-07-22 AAR177 HND → ICN Jul 22, 16:50 UTCJul 22, 18:45 UTC1h 55m
2026-07-22 AAR178 - Jul 22, 12:45 UTCJul 22, 14:45 UTC2h 0m
2026-07-22 AAR333 ICN → PEK Jul 22, 04:15 UTCJul 22, 04:40 UTC25m
2026-07-22 AAR107 NRT → ICN Jul 22, 00:20 UTCJul 22, 02:15 UTC1h 55m
2026-07-21 AAR108 ICN → NRT Jul 21, 10:05 UTCJul 21, 12:00 UTC1h 55m
2026-07-21 AAR702 MNL → ICN Jul 21, 04:30 UTCJul 21, 08:05 UTC3h 35m
2026-07-20 AAR701 ICN → MNL Jul 20, 22:55 UTCJul 21, 02:15 UTC3h 19m
2026-07-20 AAR714 TPE → ICN Jul 20, 09:30 UTCJul 20, 11:45 UTC2h 15m
2026-07-20 AAR713 - Jul 20, 06:00 UTCJul 20, 08:05 UTC2h 5m
2026-07-20 AAR302 - Jul 20, 03:50 UTCJul 20, 04:20 UTC30m
2026-07-20 AAR301 - Jul 20, 00:30 UTCJul 20, 00:55 UTC25m
2026-07-19 AAR334 - Jul 19, 09:15 UTCJul 19, 09:35 UTC20m
2026-07-19 AAR333 ICN → PEK Jul 19, 04:45 UTCJul 19, 05:10 UTC25m
2026-07-19 AAR107 - Jul 19, 01:00 UTCJul 19, 03:00 UTC2h 0m
2026-07-18 AAR108 - Jul 18, 10:40 UTCJul 18, 12:35 UTC1h 55m
2026-07-18 AAR702 MNL → ICN Jul 18, 05:10 UTCJul 18, 08:45 UTC3h 35m
2026-07-18 AAR701 ICN → MNL Jul 18, 01:34 UTCJul 18, 03:15 UTC1h 41m
2026-07-17 AAR701 ICN → MNL Jul 17, 23:50 UTCJul 18, 00:39 UTC50m
2026-07-17 AAR358 - Jul 17, 20:15 UTCJul 17, 21:30 UTC1h 15m
2026-07-17 - - Jul 17, 18:00 UTCJul 17, 18:10 UTC10m
2026-07-17 AAR357 - Jul 17, 12:30 UTCJul 17, 13:35 UTC1h 5m
2026-07-17 AAR366 - Jul 17, 10:05 UTCJul 17, 10:44 UTC40m
2026-07-17 AAR365 - Jul 17, 05:30 UTCJul 17, 06:15 UTC45m
2026-07-17 AAR111 KIX → ICN Jul 17, 01:59 UTCJul 17, 03:20 UTC1h 20m
2026-07-16 AAR112 ICN → KIX Jul 16, 22:19 UTCJul 16, 23:44 UTC1h 25m
2026-07-16 AAR356 - Jul 16, 19:50 UTCJul 16, 20:29 UTC40m
2026-07-16 AAR355 - Jul 16, 12:30 UTCJul 16, 13:20 UTC50m
2026-07-16 AAR370 - Jul 16, 07:20 UTCJul 16, 07:55 UTC35m
2026-07-16 AAR370 - Jul 16, 04:55 UTCJul 16, 05:05 UTC10m
2026-07-16 AAR369 - Jul 16, 00:30 UTCJul 16, 01:10 UTC40m
2026-07-15 AAR358 - Jul 15, 20:15 UTCJul 15, 21:00 UTC45m
2026-07-15 AAR357 - Jul 15, 13:15 UTCJul 15, 14:00 UTC45m
2026-07-14 AAR731 - Jul 14, 23:30 UTCJul 15, 11:15 UTC11h 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 HL7747 page for operator, model, and routing details .

Mode-S 71BF47 frequently asked

What is Mode-S code 71BF47?
71BF47 is an ICAO 24-bit transponder address. Allocated to Korea, South. Assigned to HL7747.
Where is Mode-S 71BF47 registered?
Mode-S code 71BF47 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 71BF47 broadcasting right now?
Yes. Mode-S 71BF47 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 71BF47, octal 34337507, decimal 7,454,535.
What flights does 71BF47 operate?
Mode-S 71BF47 has broadcast 20 distinct callsigns, including AAR731, AAR108, AAR369, AAR122, AAR107.