Apparatus

Try JFK, AAL1290, BAW, or N225AN.

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
No current signal · last broadcast 2h ago
Flights observed
330
Distinct callsigns
20
Country
KR
Last broadcast
2h ago

Last known position

Most recent position reported by Mode-S 71BF10.

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
KAL2027 - 15 2026-07-14
KAL1055 Korean Air 15 2026-05-21
KAL2028 - 13 2026-07-12
KAL836 - 11 2026-06-30
KAL832 - 9 2026-07-14
KAL831 - 9 2026-07-13
KAL891 - 8 2026-07-07
KAL835 - 7 2026-06-29
KAL648 - 5 2026-06-23
KAL864 - 4 2026-06-29
KAL2118 Korean Air 4 2026-05-15

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 KAL2027 - Jul 14, 07:20 UTCJul 14, 08:00 UTC40m
2026-07-14 KAL832 - Jul 14, 03:50 UTCJul 14, 04:15 UTC25m
2026-07-13 KAL831 - Jul 13, 23:30 UTCJul 13, 23:55 UTC25m
2026-07-13 KAL2012 - Jul 13, 16:55 UTCJul 13, 20:00 UTC3h 5m
2026-07-13 KAL2011 ICN → HKG Jul 13, 11:20 UTCJul 13, 14:30 UTC3h 10m
2026-07-13 KAL887 ICN → ICN Jul 13, 02:25 UTCJul 13, 07:45 UTC5h 20m
2026-07-12 KAL2028 - Jul 12, 12:10 UTCJul 12, 14:05 UTC1h 55m
2026-07-12 KAL2027 ICN → TPE Jul 12, 08:30 UTCJul 12, 10:35 UTC2h 5m
2026-07-12 KAL2148 - Jul 12, 04:45 UTCJul 12, 06:25 UTC1h 40m
2026-07-12 KAL2147 - Jul 12, 02:20 UTCJul 12, 02:40 UTC20m
2026-07-12 KAL2147 - Jul 12, 00:55 UTCJul 12, 01:45 UTC50m
2026-07-11 KAL459 ICN → ICN Jul 11, 10:40 UTCJul 11, 22:01 UTC11h 20m
2026-07-11 KAL832 - Jul 11, 03:40 UTCJul 11, 04:01 UTC20m
2026-07-10 KAL831 - Jul 10, 23:15 UTCJul 10, 23:40 UTC25m
2026-07-09 KAL888 ICN → ICN Jul 9, 02:40 UTCJul 9, 08:55 UTC6h 15m
2026-07-08 KAL2028 TPE → ICN Jul 8, 11:15 UTCJul 8, 13:25 UTC2h 10m
2026-07-08 KAL2027 - Jul 8, 07:30 UTCJul 8, 09:30 UTC2h 0m
2026-07-07 KAL891 ICN → ICN Jul 7, 10:30 UTCJul 8, 02:30 UTC16h 0m
2026-07-07 KAL832 - Jul 7, 04:05 UTCJul 7, 04:20 UTC15m
2026-07-06 KAL831 - Jul 6, 23:50 UTCJul 7, 00:15 UTC25m
2026-07-06 KAL888 - Jul 6, 09:20 UTCJul 6, 10:00 UTC40m
2026-07-06 KAL887 - Jul 6, 05:00 UTCJul 6, 05:45 UTC45m
2026-07-05 KAL2028 TPE → ICN Jul 5, 11:20 UTCJul 5, 13:20 UTC2h 0m
2026-07-05 KAL2027 - Jul 5, 07:30 UTCJul 5, 09:35 UTC2h 5m
2026-07-04 KAL891 ICN → ICN Jul 4, 11:00 UTCJul 5, 02:50 UTC15h 50m
2026-07-04 KAL888 ICN → ICN Jul 4, 02:35 UTCJul 4, 08:20 UTC5h 45m
2026-07-01 KAL892 - Jul 1, 10:40 UTCJul 2, 02:45 UTC16h 5m
2026-07-01 KAL887 ICN → ICN Jul 1, 02:45 UTCJul 1, 08:45 UTC6h 0m
2026-06-30 KAL836 - Jun 30, 07:20 UTCJun 30, 08:00 UTC40m
2026-06-29 KAL835 - Jun 29, 23:54 UTCJun 30, 00:45 UTC50m
2026-06-29 KAL864 - Jun 29, 19:00 UTCJun 29, 19:20 UTC20m
2026-06-29 - - Jun 29, 17:59 UTCJun 29, 18:10 UTC10m
2026-06-29 KAL863 - Jun 29, 11:20 UTCJun 29, 11:39 UTC20m
2026-06-28 KAL891 ICN → ICN Jun 28, 10:15 UTCJun 29, 02:45 UTC16h 30m
2026-06-28 KAL2042 - Jun 28, 07:34 UTCJun 28, 07:54 UTC20m
2026-06-28 KAL2041 - Jun 28, 00:00 UTCJun 28, 01:34 UTC1h 35m
2026-06-26 KAL836 - Jun 26, 09:14 UTCJun 26, 09:50 UTC35m
2026-06-26 KAL836 - Jun 26, 06:45 UTCJun 26, 06:54 UTC10m
2026-06-25 KAL835 - Jun 25, 23:55 UTCJun 26, 00:24 UTC30m
2026-06-25 KAL2028 TPE → ICN Jun 25, 11:04 UTCJun 25, 13:05 UTC2h 0m
2026-06-25 KAL2027 - Jun 25, 07:25 UTCJun 25, 09:29 UTC2h 5m
2026-06-24 KAL891 ICN → ICN Jun 24, 10:25 UTCJun 25, 02:49 UTC16h 25m
2026-06-24 KAL836 - Jun 24, 07:24 UTCJun 24, 08:14 UTC50m
2026-06-24 KAL836 - Jun 24, 05:09 UTCJun 24, 05:20 UTC10m
2026-06-23 KAL835 - Jun 23, 23:59 UTCJun 24, 00:40 UTC40m
2026-06-23 KAL2028 - Jun 23, 11:04 UTCJun 23, 13:09 UTC2h 5m
2026-06-23 KAL2027 ICN → TPE Jun 23, 07:29 UTCJun 23, 09:45 UTC2h 15m
2026-06-23 KAL648 - Jun 23, 02:45 UTCJun 23, 05:49 UTC3h 5m
2026-06-22 KAL648 - Jun 22, 23:39 UTCJun 22, 23:50 UTC10m
2026-06-22 KAL647 - Jun 22, 20:19 UTCJun 22, 20:30 UTC10m

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?
No active broadcast right now. Last signal was 2h ago.
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.