Apparatus

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sensors Mode-S transponder

71BF10

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

Currently assigned to HL7710 · AIRBUS A-330-300

Hex
71BF10
Octal
34337420
Decimal
7,454,480
Country
KR
Tail
HL7710
Type
A333
Broadcasting now · callsign KAL744 · 34,000 ft
Flights observed
210
Distinct callsigns
20
Country
KR
Last broadcast
13h ago

Current position

71BF10 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 71BF10 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
KAL2106 Korean Air 24 2026-05-23
KAL2105 Korean Air 20 2026-05-22
KAL1244 Korean Air 19 2026-05-23
KAL1177 Korean Air 18 2026-05-23
KAL1312 Korean Air 17 2026-05-23
KAL1246 Korean Air 17 2026-05-21
KAL1188 Korean Air 17 2026-05-21
KAL1121 Korean Air 17 2026-05-21
KAL1113 Korean Air 17 2026-05-23
KAL1055 Korean Air 15 2026-05-21
KAL2118 Korean Air 4 2026-05-15
KAL2117 Korean Air 4 2026-05-15
KAL2057 Korean Air 3 2026-05-15
KAL743 Korean Air 2 2026-05-29
KAL458 Korean Air 2 2026-05-26
KAL2058 Korean Air 2 2026-05-06
KAL868 Korean Air 1 2026-05-27
KAL867 Korean Air 1 2026-05-27
KAL844 Korean Air 1 2026-05-29
KAL843 Korean Air 1 2026-05-29

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-29 KAL743 ICN → NGO May 29, 10:40 UTCMay 29, 11:50 UTC1h 10m
2026-05-29 KAL844 TAO → ICN May 29, 08:30 UTCMay 29, 09:00 UTC30m
2026-05-29 KAL843 ICN → TAO May 29, 04:55 UTCMay 29, 05:10 UTC15m
2026-05-29 KAL744 NGO → ICN May 29, 00:25 UTCMay 29, 02:00 UTC1h 35m
2026-05-28 KAL743 ICN → NGO May 28, 10:20 UTCMay 28, 11:35 UTC1h 15m
2026-05-28 KAL2002 HKG → ICN May 28, 04:30 UTCMay 28, 07:45 UTC3h 15m
2026-05-27 KAL2001 ICN → HKG May 27, 23:30 UTCMay 28, 02:30 UTC3h 0m
2026-05-27 KAL868 CAN → ICN May 27, 08:45 UTCMay 27, 09:10 UTC25m
2026-05-27 KAL867 ICN → CAN May 27, 01:24 UTCMay 27, 01:49 UTC25m
2026-05-26 KAL458 DAD → ICN May 26, 13:00 UTCMay 26, 13:29 UTC30m
2026-05-26 KAL457 ICN → DAD May 26, 03:05 UTCMay 26, 11:44 UTC8h 40m
2026-05-25 KAL2012 HKG → ICN May 25, 17:00 UTCMay 25, 19:59 UTC3h 0m
2026-05-25 KAL2011 ICN → HKG May 25, 11:10 UTCMay 25, 14:10 UTC3h 0m
2026-05-25 KAL142 XIY → ICN May 25, 06:50 UTCMay 25, 07:20 UTC30m
2026-05-24 KAL458 DAD → ICN May 24, 03:10 UTCMay 24, 13:15 UTC10h 5m
2026-05-23 KAL193P GMP → ICN May 23, 13:25 UTCMay 23, 13:40 UTC15m
2026-05-23 KAL1312 CJU → GMP May 23, 11:45 UTCMay 23, 12:10 UTC25m
2026-05-23 KAL1177 GMP → CJU May 23, 09:15 UTCMay 23, 09:40 UTC25m
2026-05-23 KAL1244 CJU → GMP May 23, 07:25 UTCMay 23, 07:55 UTC30m
2026-05-23 KAL1113 GMP → CJU May 23, 04:50 UTCMay 23, 05:15 UTC25m
2026-05-23 KAL2106 HND → GMP May 23, 02:20 UTCMay 23, 02:50 UTC29m
2026-05-23 KAL2106 HND → GMP May 23, 00:50 UTCMay 23, 01:50 UTC1h 0m
2026-05-22 KAL2105 GMP → HND May 22, 10:50 UTCMay 22, 12:30 UTC1h 40m
2026-05-22 KAL1244 CJU → GMP May 22, 08:10 UTCMay 22, 08:45 UTC35m
2026-05-22 KAL1113 GMP → CJU May 22, 05:30 UTCMay 22, 05:55 UTC25m
2026-05-22 KAL2106 HND → GMP May 22, 00:55 UTCMay 22, 02:50 UTC1h 55m
2026-05-21 KAL2105 GMP → HND May 21, 10:10 UTCMay 21, 11:45 UTC1h 35m
2026-05-21 KAL1246 CJU → GMP May 21, 07:15 UTCMay 21, 07:45 UTC30m
2026-05-21 KAL1121 GMP → CJU May 21, 04:45 UTCMay 21, 05:10 UTC25m
2026-05-21 KAL1188 CJU → GMP May 21, 02:50 UTCMay 21, 03:30 UTC40m
2026-05-21 KAL1055 GMP → CJU May 21, 00:30 UTCMay 21, 00:55 UTC25m
2026-05-20 KAL1312 CJU → GMP May 20, 11:35 UTCMay 20, 12:10 UTC35m
2026-05-20 KAL1177 GMP → CJU May 20, 09:00 UTCMay 20, 09:25 UTC25m
2026-05-20 KAL1244 CJU → GMP May 20, 07:15 UTCMay 20, 07:45 UTC30m
2026-05-20 KAL1113 GMP → CJU May 20, 04:35 UTCMay 20, 05:00 UTC26m
2026-05-20 KAL2106 HND → GMP May 20, 00:30 UTCMay 20, 02:30 UTC2h 0m
2026-05-19 KAL2105 GMP → HND May 19, 10:00 UTCMay 19, 11:50 UTC1h 50m
2026-05-19 KAL1246 CJU → GMP May 19, 07:50 UTCMay 19, 08:15 UTC25m
2026-05-19 KAL1121 GMP → CJU May 19, 05:10 UTCMay 19, 05:35 UTC25m
2026-05-19 KAL1188 CJU → GMP May 19, 03:20 UTCMay 19, 03:50 UTC30m
2026-05-19 KAL1055 GMP → CJU May 19, 00:30 UTCMay 19, 00:55 UTC25m
2026-05-18 KAL1312 CJU → GMP May 18, 11:05 UTCMay 18, 11:35 UTC30m
2026-05-18 KAL1177 GMP → CJU May 18, 08:45 UTCMay 18, 09:10 UTC25m
2026-05-18 KAL1244 CJU → GMP May 18, 07:05 UTCMay 18, 07:30 UTC25m
2026-05-18 KAL1113 GMP → CJU May 18, 04:40 UTCMay 18, 05:10 UTC30m
2026-05-18 KAL2106 HND → GMP May 18, 00:45 UTCMay 18, 02:30 UTC1h 45m
2026-05-17 KAL2105 GMP → HND May 17, 09:55 UTCMay 17, 11:50 UTC1h 55m
2026-05-17 KAL1246 CJU → GMP May 17, 07:15 UTCMay 17, 07:45 UTC30m
2026-05-17 KAL1121 GMP → CJU May 17, 04:40 UTCMay 17, 05:05 UTC25m
2026-05-17 KAL2106 HND → GMP May 17, 00:55 UTCMay 17, 02:30 UTC1h 35m

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 HL7710 page for operator, model, and routing details .

Mode-S 71BF10 frequently asked

What is Mode-S code 71BF10?
71BF10 is an ICAO 24-bit transponder address. Allocated to Korea, South. Assigned to HL7710.
Where is Mode-S 71BF10 registered?
Mode-S code 71BF10 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 71BF10 broadcasting right now?
Yes. Mode-S 71BF10 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 71BF10, octal 34337420, decimal 7,454,480.
What flights does 71BF10 operate?
Mode-S 71BF10 has broadcast 20 distinct callsigns, including KAL2106, KAL2105, KAL1244, KAL1177, KAL1312.