Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

71BE37

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

Currently assigned to HL7637 · BOEING 747-8

Hex
71BE37
Octal
34337067
Decimal
7,454,263
Country
KR
Tail
HL7637
Type
B748
No current signal · last broadcast 2h ago
Flights observed
64
Distinct callsigns
10
Country
KR
Last broadcast
2h ago

Last known position

Most recent position reported by Mode-S 71BE37.

Country allocation

The ICAO 24-bit address 71BE37 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 10 distinct

Callsign Airline Flights Last seen
KAL8016 - 15 2026-05-29
KAL8015 Korean Air 14 2026-05-29
KAL018 Korean Air 12 2026-05-22
KAL017 Korean Air 12 2026-05-22
KAL012 Korean Air 3 2026-05-25
KAL011 Korean Air 3 2026-05-24
KAL2001 Korean Air 2 2026-05-20
KAL704 Korean Air 1 2026-05-24
KAL703 Korean Air 1 2026-05-24
KAL2002 Korean Air 1 2026-05-20

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-29 KAL8016 - May 29, 17:25 UTCMay 29, 22:55 UTC5h 30m
2026-05-29 KAL8015 ICN → LAX May 29, 03:45 UTCMay 29, 14:10 UTC10h 25m
2026-05-27 KAL8016 - May 27, 17:30 UTCMay 28, 06:00 UTC12h 30m
2026-05-27 KAL8015 ICN → LAX May 27, 03:50 UTCMay 27, 14:20 UTC10h 31m
2026-05-25 KAL012 LAX → ICN May 25, 07:40 UTCMay 25, 19:35 UTC11h 54m
2026-05-24 KAL011 ICN → LAX May 24, 11:05 UTCMay 24, 21:30 UTC10h 25m
2026-05-24 KAL704 NRT → ICN May 24, 05:25 UTCMay 24, 07:20 UTC1h 55m
2026-05-24 KAL703 ICN → NRT May 24, 01:45 UTCMay 24, 03:35 UTC1h 50m
2026-05-22 KAL018 LAX → ICN May 22, 19:50 UTCMay 23, 09:00 UTC13h 9m
2026-05-22 KAL017 ICN → LAX May 22, 05:45 UTCMay 22, 15:55 UTC10h 10m
2026-05-21 KAL012 LAX → ICN May 21, 07:15 UTCMay 21, 20:20 UTC13h 5m
2026-05-20 KAL011 ICN → LAX May 20, 11:20 UTCMay 20, 21:40 UTC10h 20m
2026-05-20 KAL2002 HKG → ICN May 20, 04:55 UTCMay 20, 07:55 UTC3h 0m
2026-05-20 KAL2001 ICN → HKG May 20, 02:30 UTCMay 20, 02:45 UTC15m
2026-05-19 KAL2001 ICN → HKG May 19, 23:45 UTCMay 20, 01:55 UTC2h 10m
2026-05-18 KAL018 LAX → ICN May 18, 19:45 UTCMay 19, 08:25 UTC12h 40m
2026-05-18 KAL017 ICN → LAX May 18, 05:55 UTCMay 18, 16:15 UTC10h 20m
2026-05-16 KAL018 LAX → ICN May 16, 19:55 UTCMay 17, 08:25 UTC12h 30m
2026-05-16 KAL017 ICN → LAX May 16, 05:56 UTCMay 16, 16:25 UTC10h 30m
2026-05-14 KAL018 LAX → ICN May 14, 19:45 UTCMay 15, 07:35 UTC11h 50m
2026-05-14 KAL017 ICN → LAX May 14, 05:50 UTCMay 14, 16:35 UTC10h 45m
2026-05-12 KAL018 LAX → ICN May 12, 20:01 UTCMay 13, 08:10 UTC12h 10m
2026-05-12 KAL017 ICN → LAX May 12, 06:10 UTCMay 12, 16:30 UTC10h 20m
2026-05-11 KAL012 LAX → ICN May 11, 07:05 UTCMay 11, 18:40 UTC11h 35m
2026-05-10 KAL011 ICN → LAX May 10, 11:10 UTCMay 10, 21:10 UTC10h 0m
2026-05-08 KAL8016 - May 8, 17:25 UTCMay 9, 06:10 UTC12h 45m
2026-05-08 KAL8015 ICN → LAX May 8, 03:49 UTCMay 8, 14:10 UTC10h 20m
2026-05-06 KAL018 LAX → ICN May 6, 19:45 UTCMay 7, 08:05 UTC12h 20m
2026-05-06 KAL017 ICN → LAX May 6, 06:10 UTCMay 6, 16:35 UTC10h 25m
2026-05-04 KAL8016 - May 4, 17:30 UTCMay 5, 06:00 UTC12h 31m
2026-05-04 KAL8015 ICN → LAX May 4, 04:00 UTCMay 4, 14:15 UTC10h 15m
2026-05-01 KAL8016 - May 1, 17:25 UTCMay 2, 06:05 UTC12h 41m
2026-05-01 KAL8015 ICN → LAX May 1, 03:50 UTCMay 1, 14:15 UTC10h 25m
2026-04-29 KAL8016 - Apr 29, 17:20 UTCApr 30, 05:45 UTC12h 24m
2026-04-29 KAL8015 ICN → LAX Apr 29, 04:00 UTCApr 29, 14:10 UTC10h 11m
2026-04-27 KAL8016 - Apr 27, 17:35 UTCApr 28, 06:20 UTC12h 45m
2026-04-27 KAL8015 ICN → LAX Apr 27, 03:50 UTCApr 27, 14:10 UTC10h 20m
2026-04-25 KAL018 LAX → ICN Apr 25, 19:50 UTCApr 26, 08:30 UTC12h 40m
2026-04-25 KAL017 ICN → LAX Apr 25, 06:00 UTCApr 25, 16:20 UTC10h 20m
2026-04-22 KAL8016 - Apr 22, 17:20 UTCApr 23, 05:50 UTC12h 30m
2026-04-22 KAL8015 ICN → LAX Apr 22, 04:00 UTCApr 22, 14:00 UTC10h 0m
2026-04-21 KAL018 LAX → ICN Apr 21, 00:15 UTCApr 21, 12:45 UTC12h 30m
2026-04-20 KAL017 ICN → LAX Apr 20, 10:40 UTCApr 20, 21:35 UTC10h 55m
2026-04-19 KAL018 LAX → ICN Apr 19, 19:40 UTCApr 20, 07:35 UTC11h 55m
2026-04-19 KAL017 ICN → LAX Apr 19, 05:55 UTCApr 19, 16:25 UTC10h 30m
2026-04-18 KAL8016 - Apr 18, 05:40 UTCApr 18, 06:15 UTC35m
2026-04-18 KAL8016 - Apr 18, 04:45 UTCApr 18, 06:15 UTC1h 30m
2026-04-18 KAL8016 - Apr 18, 04:10 UTCApr 18, 05:20 UTC1h 10m
2026-04-17 KAL8016 - Apr 17, 21:25 UTCApr 17, 23:10 UTC1h 45m
2026-04-17 KAL8016 - Apr 17, 17:25 UTCApr 17, 19:05 UTC1h 40m

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 HL7637 page for operator, model, and routing details .

Mode-S 71BE37 frequently asked

What is Mode-S code 71BE37?
71BE37 is an ICAO 24-bit transponder address. Allocated to Korea, South. Assigned to HL7637.
Where is Mode-S 71BE37 registered?
Mode-S code 71BE37 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 71BE37 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 71BE37, octal 34337067, decimal 7,454,263.
What flights does 71BE37 operate?
Mode-S 71BE37 has broadcast 10 distinct callsigns, including KAL8016, KAL8015, KAL018, KAL017, KAL012.