Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

71BF46

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

Currently assigned to HL7746 · AIRBUS A-330-300

Hex
71BF46
Octal
34337506
Decimal
7,454,534
Country
KR
Tail
HL7746
Type
A333
No current signal · last broadcast Apr 18, 11:55 UTC
Flights observed
38
Distinct callsigns
20
Country
KR
Last broadcast
Apr 18, 11:55 UTC

Last known position

Most recent position reported by Mode-S 71BF46.

Country allocation

The ICAO 24-bit address 71BF46 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
AAR732 Asiana Airlines 5 2026-04-14
AAR123 Asiana Airlines 4 2026-04-18
AAR745 Asiana Airlines 3 2026-04-16
AAR124 Asiana Airlines 3 2026-04-18
AAR748 Asiana Airlines 2 2026-04-17
AAR747 Asiana Airlines 2 2026-04-17
AAR746 - 2 2026-04-16
AAR731 - 2 2026-04-13
AAR357 - 2 2026-04-14
AAR356 - 2 2026-04-13
AAR122 Asiana Airlines 2 2026-04-18
AAR364 Asiana Airlines 1 2026-04-17
AAR363 Asiana Airlines 1 2026-04-17
AAR358 - 1 2026-04-14
AAR355 - 1 2026-04-13
AAR134 Asiana Airlines 1 2026-04-16
AAR133 Asiana Airlines 1 2026-04-16
AAR121 Asiana Airlines 1 2026-04-18
AAR112 Asiana Airlines 1 2026-04-15
AAR111 Asiana Airlines 1 2026-04-16

Recent flights last 38

DateFlightRouteTakeoffLandingDuration
2026-04-18 AAR123 NGO → ICN Apr 18, 11:20 UTCApr 18, 11:55 UTC35m
2026-04-18 AAR123 NGO → ICN Apr 18, 10:30 UTCApr 18, 11:05 UTC35m
2026-04-18 AAR124 ICN → NGO Apr 18, 08:40 UTCApr 18, 08:50 UTC10m
2026-04-18 AAR124 ICN → NGO Apr 18, 07:40 UTCApr 18, 08:05 UTC25m
2026-04-18 AAR121 NGO → ICN Apr 18, 03:25 UTCApr 18, 04:50 UTC1h 25m
2026-04-18 AAR122 ICN → NGO Apr 18, 01:25 UTCApr 18, 01:35 UTC10m
2026-04-18 AAR122 ICN → NGO Apr 18, 00:30 UTCApr 18, 00:55 UTC25m
2026-04-17 AAR748 HKT → ICN Apr 17, 21:25 UTCApr 17, 21:50 UTC25m
2026-04-17 AAR748 HKT → ICN Apr 17, 19:25 UTCApr 17, 21:20 UTC1h 55m
2026-04-17 AAR747 ICN → HKT Apr 17, 11:20 UTCApr 17, 12:15 UTC55m
2026-04-17 AAR747 ICN → HKT Apr 17, 09:20 UTCApr 17, 11:15 UTC1h 55m
2026-04-17 AAR364 PVG → ICN Apr 17, 06:45 UTCApr 17, 07:15 UTC30m
2026-04-17 AAR363 ICN → PVG Apr 17, 02:40 UTCApr 17, 03:15 UTC35m
2026-04-16 AAR746 - Apr 16, 19:15 UTCApr 16, 21:00 UTC1h 45m
2026-04-16 AAR746 - Apr 16, 18:05 UTCApr 16, 19:10 UTC1h 5m
2026-04-16 AAR745 ICN → HKG Apr 16, 15:15 UTCApr 16, 15:40 UTC25m
2026-04-16 AAR745 ICN → HKG Apr 16, 14:00 UTCApr 16, 14:40 UTC40m
2026-04-16 AAR745 ICN → HKG Apr 16, 12:09 UTCApr 16, 12:55 UTC45m
2026-04-16 AAR133 FUK → ICN Apr 16, 08:19 UTCApr 16, 08:54 UTC35m
2026-04-16 AAR134 ICN → FUK Apr 16, 05:15 UTCApr 16, 05:45 UTC30m
2026-04-16 AAR111 KIX → ICN Apr 16, 01:50 UTCApr 16, 03:04 UTC1h 15m
2026-04-15 AAR112 ICN → KIX Apr 15, 22:10 UTCApr 15, 23:00 UTC50m
2026-04-15 AAR123 NGO → ICN Apr 15, 11:00 UTCApr 15, 12:20 UTC1h 20m
2026-04-15 AAR123 NGO → ICN Apr 15, 10:45 UTCApr 15, 10:55 UTC10m
2026-04-15 AAR124 ICN → NGO Apr 15, 07:35 UTCApr 15, 08:05 UTC30m
2026-04-14 AAR358 - Apr 14, 19:40 UTCApr 14, 20:20 UTC40m
2026-04-14 AAR357 - Apr 14, 12:50 UTCApr 14, 13:10 UTC20m
2026-04-14 AAR357 - Apr 14, 12:30 UTCApr 14, 12:45 UTC15m
2026-04-14 AAR732 SGN → ICN Apr 14, 09:35 UTCApr 14, 10:15 UTC40m
2026-04-14 AAR732 SGN → ICN Apr 14, 07:40 UTCApr 14, 08:40 UTC1h 0m
2026-04-13 AAR731 - Apr 13, 23:00 UTCApr 13, 23:30 UTC30m
2026-04-13 AAR356 - Apr 13, 19:50 UTCApr 13, 20:10 UTC20m
2026-04-13 AAR356 - Apr 13, 19:35 UTCApr 13, 20:10 UTC35m
2026-04-13 AAR355 - Apr 13, 12:30 UTCApr 13, 13:15 UTC45m
2026-04-13 AAR732 SGN → ICN Apr 13, 08:20 UTCApr 13, 09:55 UTC1h 35m
2026-04-13 AAR732 SGN → ICN Apr 13, 07:55 UTCApr 13, 09:55 UTC2h 0m
2026-04-13 AAR732 SGN → ICN Apr 13, 07:30 UTCApr 13, 08:15 UTC45m
2026-04-13 AAR731 - Apr 13, 00:45 UTCApr 13, 01:50 UTC1h 5m

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 HL7746 page for operator, model, and routing details .

Mode-S 71BF46 frequently asked

What is Mode-S code 71BF46?
71BF46 is an ICAO 24-bit transponder address. Allocated to Korea, South. Assigned to HL7746.
Where is Mode-S 71BF46 registered?
Mode-S code 71BF46 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 71BF46 broadcasting right now?
No active broadcast right now. Last signal was Apr 18, 11:55 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 71BF46, octal 34337506, decimal 7,454,534.
What flights does 71BF46 operate?
Mode-S 71BF46 has broadcast 20 distinct callsigns, including AAR732, AAR123, AAR745, AAR124, AAR748.