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 11h ago
Flights observed
142
Distinct callsigns
20
Country
KR
Last broadcast
11h 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 Korean Air 18 2026-05-27
KAL835 Korean Air 16 2026-05-27
KAL2027 Korean Air 13 2026-05-29
KAL864 Korean Air 12 2026-05-26
KAL2028 Korean Air 12 2026-05-29
KAL457 Korean Air 8 2026-05-05
KAL863 Korean Air 6 2026-05-26
KAL458 Korean Air 6 2026-05-28
KAL743 Korean Air 5 2026-05-24
KAL141 Korean Air 5 2026-05-23
KAL844 Korean Air 4 2026-05-25
KAL843 Korean Air 4 2026-05-25
KAL832 Korean Air 4 2026-04-28
KAL831 Korean Air 4 2026-04-27
KAL744 Korean Air 4 2026-05-24
KAL881 Korean Air 3 2026-05-18
KAL142 Korean Air 3 2026-05-23
KAL882 Korean Air 2 2026-05-28
KAL2118 - 2 2026-04-13
KAL2058 - 2 2026-04-13

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-29 KAL2028 TPE → ICN May 29, 11:30 UTCMay 29, 13:30 UTC2h 0m
2026-05-29 KAL2027 ICN → TPE May 29, 09:20 UTCMay 29, 09:45 UTC25m
2026-05-29 KAL2027 ICN → TPE May 29, 07:35 UTCMay 29, 08:00 UTC25m
2026-05-28 KAL882 PVG → ICN May 28, 23:50 UTCMay 29, 05:00 UTC5h 10m
2026-05-28 KAL458 DAD → ICN May 28, 03:10 UTCMay 28, 13:10 UTC10h 0m
2026-05-27 KAL836 SZX → ICN May 27, 07:20 UTCMay 27, 07:55 UTC35m
2026-05-27 KAL836 SZX → ICN May 27, 04:55 UTCMay 27, 05:04 UTC10m
2026-05-27 KAL835 ICN → SZX May 27, 00:04 UTCMay 27, 00:30 UTC25m
2026-05-26 KAL864 PEK → ICN May 26, 19:05 UTCMay 26, 19:25 UTC20m
2026-05-26 KAL864 PEK → ICN May 26, 17:59 UTCMay 26, 18:10 UTC10m
2026-05-26 KAL863 ICN → PEK May 26, 11:20 UTCMay 26, 11:44 UTC25m
2026-05-26 KAL836 SZX → ICN May 26, 07:59 UTCMay 26, 08:34 UTC35m
2026-05-26 KAL835 ICN → SZX May 26, 00:09 UTCMay 26, 00:35 UTC25m
2026-05-25 KAL844 TAO → ICN May 25, 07:55 UTCMay 25, 08:25 UTC30m
2026-05-25 KAL843 ICN → TAO May 25, 04:30 UTCMay 25, 04:50 UTC20m
2026-05-24 KAL743 ICN → NGO May 24, 10:20 UTCMay 24, 11:40 UTC1h 20m
2026-05-24 KAL844 TAO → ICN May 24, 07:50 UTCMay 24, 08:10 UTC20m
2026-05-24 KAL843 ICN → TAO May 24, 04:25 UTCMay 24, 04:40 UTC15m
2026-05-24 KAL744 NGO → ICN May 24, 00:30 UTCMay 24, 02:05 UTC1h 35m
2026-05-23 KAL743 ICN → NGO May 23, 10:20 UTCMay 23, 11:35 UTC1h 15m
2026-05-23 KAL142 XIY → ICN May 23, 07:15 UTCMay 23, 07:35 UTC20m
2026-05-23 KAL141 ICN → XIY May 23, 00:30 UTCMay 23, 00:55 UTC25m
2026-05-22 KAL844 TAO → ICN May 22, 08:30 UTCMay 22, 08:55 UTC25m
2026-05-22 KAL843 ICN → TAO May 22, 04:55 UTCMay 22, 05:15 UTC20m
2026-05-22 KAL744 NGO → ICN May 22, 00:25 UTCMay 22, 02:00 UTC1h 35m
2026-05-21 KAL743 ICN → NGO May 21, 10:50 UTCMay 21, 12:15 UTC1h 25m
2026-05-21 KAL844 TAO → ICN May 21, 08:30 UTCMay 21, 08:55 UTC25m
2026-05-21 KAL843 ICN → TAO May 21, 05:10 UTCMay 21, 05:40 UTC30m
2026-05-21 KAL744 NGO → ICN May 21, 00:25 UTCMay 21, 02:05 UTC1h 40m
2026-05-20 KAL743 ICN → NGO May 20, 10:50 UTCMay 20, 12:05 UTC1h 15m
2026-05-20 KAL836 SZX → ICN May 20, 07:35 UTCMay 20, 08:15 UTC40m
2026-05-20 KAL835 ICN → SZX May 20, 00:10 UTCMay 20, 00:40 UTC30m
2026-05-19 KAL2028 TPE → ICN May 19, 12:40 UTCMay 19, 13:05 UTC25m
2026-05-19 KAL2028 TPE → ICN May 19, 11:05 UTCMay 19, 11:25 UTC20m
2026-05-19 KAL2027 ICN → TPE May 19, 09:10 UTCMay 19, 09:35 UTC25m
2026-05-19 KAL2027 ICN → TPE May 19, 07:25 UTCMay 19, 07:55 UTC30m
2026-05-18 KAL881 ICN → PVG May 18, 23:45 UTCMay 19, 04:50 UTC5h 5m
2026-05-18 KAL458 DAD → ICN May 18, 04:05 UTCMay 18, 14:25 UTC10h 20m
2026-05-18 KAL744 NGO → ICN May 18, 00:40 UTCMay 18, 02:10 UTC1h 30m
2026-05-17 KAL743 ICN → NGO May 17, 10:25 UTCMay 17, 11:45 UTC1h 20m
2026-05-17 KAL660 BKK → ICN May 17, 03:10 UTCMay 17, 08:30 UTC5h 20m
2026-05-16 KAL659 ICN → BKK May 16, 11:21 UTCMay 16, 16:20 UTC5h 0m
2026-05-16 KAL836 SZX → ICN May 16, 07:31 UTCMay 16, 08:01 UTC30m
2026-05-16 KAL836 SZX → ICN May 16, 05:00 UTCMay 16, 05:10 UTC10m
2026-05-16 KAL835 ICN → SZX May 16, 00:00 UTCMay 16, 00:25 UTC25m
2026-05-15 KAL836 SZX → ICN May 15, 08:55 UTCMay 15, 09:25 UTC30m
2026-05-15 KAL836 SZX → ICN May 15, 06:15 UTCMay 15, 06:25 UTC10m
2026-05-15 KAL835 ICN → SZX May 15, 02:45 UTCMay 15, 02:55 UTC10m
2026-05-14 KAL835 ICN → SZX May 14, 23:50 UTCMay 15, 00:15 UTC25m
2026-05-14 KAL458 DAD → ICN May 14, 03:05 UTCMay 14, 13:30 UTC10h 25m

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 11h 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, KAL835, KAL2027, KAL864, KAL2028.