Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

71BF02

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

Currently assigned to HL7702 · AIRBUS A-330-300

Hex
71BF02
Octal
34337402
Decimal
7,454,466
Country
KR
Tail
HL7702
Type
A333
No current signal · last broadcast 2h ago
Flights observed
294
Distinct callsigns
20
Country
KR
Last broadcast
2h ago

Last known position

Most recent position reported by Mode-S 71BF02.

Country allocation

The ICAO 24-bit address 71BF02 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
KAL836 - 32 2026-07-01
KAL864 - 30 2026-07-01
KAL2027 - 27 2026-07-13
KAL835 - 25 2026-07-01
KAL2028 - 22 2026-07-13
KAL863 - 18 2026-07-01
KAL441 - 15 2026-07-13
KAL442 - 14 2026-07-11
KAL832 - 11 2026-07-13
KAL831 - 11 2026-07-12
KAL458 Korean Air 8 2026-06-03
KAL457 Korean Air 8 2026-05-05
KAL844 Korean Air 5 2026-05-31
KAL743 Korean Air 5 2026-05-24
KAL141 Korean Air 5 2026-05-23
KAL843 Korean Air 4 2026-05-25
KAL744 Korean Air 4 2026-05-24
KAL891 - 3 2026-07-03
KAL888 - 3 2026-07-08
KAL881 Korean Air 3 2026-05-18

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-13 KAL441 - Jul 13, 23:25 UTCJul 14, 00:10 UTC45m
2026-07-13 KAL2028 - Jul 13, 11:05 UTCJul 13, 13:05 UTC2h 0m
2026-07-13 KAL2027 - Jul 13, 07:20 UTCJul 13, 09:30 UTC2h 10m
2026-07-13 KAL832 - Jul 13, 04:30 UTCJul 13, 04:50 UTC20m
2026-07-12 KAL831 - Jul 12, 23:20 UTCJul 12, 23:50 UTC30m
2026-07-12 KAL460 ICN → ICN Jul 12, 09:45 UTCJul 12, 20:10 UTC10h 25m
2026-07-12 KAL2002 HKG → ICN Jul 12, 04:30 UTCJul 12, 07:45 UTC3h 15m
2026-07-11 KAL2001 ICN → HKG Jul 11, 23:15 UTCJul 12, 02:40 UTC3h 25m
2026-07-11 KAL442 - Jul 11, 09:35 UTCJul 11, 09:55 UTC20m
2026-07-11 KAL442 - Jul 11, 06:10 UTCJul 11, 06:20 UTC10m
2026-07-11 KAL441 - Jul 11, 03:40 UTCJul 11, 03:50 UTC10m
2026-07-11 KAL441 - Jul 11, 00:10 UTCJul 11, 00:35 UTC25m
2026-07-10 KAL752 HND → ICN Jul 10, 17:15 UTCJul 10, 19:05 UTC1h 50m
2026-07-10 KAL751 ICN → HND Jul 10, 11:50 UTCJul 10, 13:35 UTC1h 45m
2026-07-10 KAL442 - Jul 10, 09:05 UTCJul 10, 09:50 UTC45m
2026-07-09 KAL441 - Jul 9, 23:25 UTCJul 10, 02:10 UTC2h 45m
2026-07-09 KAL442 - Jul 9, 08:40 UTCJul 9, 09:25 UTC45m
2026-07-08 KAL441 - Jul 8, 23:40 UTCJul 9, 02:30 UTC2h 50m
2026-07-08 KAL752 HND → ICN Jul 8, 17:25 UTCJul 8, 19:15 UTC1h 50m
2026-07-08 KAL751 ICN → HND Jul 8, 12:00 UTCJul 8, 13:55 UTC1h 55m
2026-07-08 KAL888 ICN → ICN Jul 8, 03:50 UTCJul 8, 09:05 UTC5h 15m
2026-07-07 KAL442 - Jul 7, 08:30 UTCJul 7, 09:05 UTC35m
2026-07-07 KAL442 - Jul 7, 05:25 UTCJul 7, 05:35 UTC10m
2026-07-06 KAL441 ICN → HAN Jul 6, 23:55 UTCJul 7, 00:40 UTC45m
2026-07-06 KAL2028 - Jul 6, 11:15 UTCJul 6, 13:15 UTC2h 0m
2026-07-06 KAL2027 - Jul 6, 07:25 UTCJul 6, 09:25 UTC2h 0m
2026-07-06 KAL832 - Jul 6, 04:00 UTCJul 6, 04:20 UTC20m
2026-07-05 KAL831 - Jul 5, 23:25 UTCJul 5, 23:50 UTC25m
2026-07-05 KAL442 - Jul 5, 05:40 UTCJul 5, 09:25 UTC3h 45m
2026-07-04 KAL441 ICN → HAN Jul 4, 23:35 UTCJul 5, 00:15 UTC40m
2026-07-04 KAL2028 - Jul 4, 11:20 UTCJul 4, 13:15 UTC1h 55m
2026-07-04 KAL2027 - Jul 4, 09:15 UTCJul 4, 09:40 UTC25m
2026-07-04 KAL2027 - Jul 4, 07:30 UTCJul 4, 08:20 UTC50m
2026-07-03 KAL891 ICN → ICN Jul 3, 10:35 UTCJul 4, 02:35 UTC16h 0m
2026-07-03 KAL888 ICN → ICN Jul 3, 02:25 UTCJul 3, 08:10 UTC5h 45m
2026-07-02 KAL442 - Jul 2, 05:35 UTCJul 2, 09:30 UTC3h 55m
2026-07-01 KAL441 ICN → HAN Jul 1, 23:20 UTCJul 2, 03:20 UTC4h 0m
2026-07-01 KAL864 - Jul 1, 18:45 UTCJul 1, 19:05 UTC20m
2026-07-01 KAL864 - Jul 1, 17:50 UTCJul 1, 18:00 UTC10m
2026-07-01 KAL863 - Jul 1, 11:20 UTCJul 1, 11:40 UTC20m
2026-07-01 KAL836 - Jul 1, 07:30 UTCJul 1, 08:15 UTC45m
2026-07-01 KAL835 - Jul 1, 00:10 UTCJul 1, 00:45 UTC35m
2026-06-30 KAL864 - Jun 30, 18:55 UTCJun 30, 19:20 UTC25m
2026-06-30 KAL864 - Jun 30, 17:55 UTCJun 30, 18:10 UTC15m
2026-06-30 KAL863 - Jun 30, 12:50 UTCJun 30, 13:05 UTC15m
2026-06-30 KAL863 - Jun 30, 11:30 UTCJun 30, 11:45 UTC15m
2026-06-30 KAL888 - Jun 30, 07:30 UTCJun 30, 08:10 UTC40m
2026-06-30 KAL887 - Jun 30, 02:25 UTCJun 30, 03:10 UTC45m
2026-06-29 KAL2028 - Jun 29, 11:14 UTCJun 29, 13:09 UTC1h 55m
2026-06-29 KAL2027 ICN → TPE Jun 29, 07:44 UTCJun 29, 09:50 UTC2h 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 HL7702 page for operator, model, and routing details .

Mode-S 71BF02 frequently asked

What is Mode-S code 71BF02?
71BF02 is an ICAO 24-bit transponder address. Allocated to Korea, South. Assigned to HL7702.
Where is Mode-S 71BF02 registered?
Mode-S code 71BF02 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 71BF02 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 71BF02, octal 34337402, decimal 7,454,466.
What flights does 71BF02 operate?
Mode-S 71BF02 has broadcast 20 distinct callsigns, including KAL836, KAL864, KAL2027, KAL835, KAL2028.