Apparatus

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sensors Mode-S transponder

71BE21

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

Currently assigned to HL7621 · AIRBUS A-380-800

Hex
71BE21
Octal
34337041
Decimal
7,454,241
Country
KR
Tail
HL7621
Type
A388
Broadcasting now · callsign KAL081 · 30,375 ft
Flights observed
70
Distinct callsigns
8
Country
KR
Last broadcast
1d ago

Current position

71BE21 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 71BE21 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 8 distinct

Callsign Airline Flights Last seen
KAL082 Korean Air 20 2026-05-25
KAL081 Korean Air 17 2026-05-25
KAL012 Korean Air 9 2026-05-27
KAL011 Korean Air 9 2026-05-26
KAL704 Korean Air 5 2026-05-28
KAL703 Korean Air 5 2026-05-28
KAL2021 Korean Air 3 2026-05-04
KAL2022 Korean Air 2 2026-05-04

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-28 KAL704 NRT → ICN May 28, 05:15 UTCMay 28, 07:25 UTC2h 10m
2026-05-28 KAL703 ICN → NRT May 28, 01:30 UTCMay 28, 03:25 UTC1h 55m
2026-05-27 KAL012 LAX → ICN May 27, 07:20 UTCMay 27, 20:00 UTC12h 40m
2026-05-26 KAL011 ICN → LAX May 26, 11:30 UTCMay 26, 22:15 UTC10h 45m
2026-05-25 KAL082 JFK → ICN May 25, 18:00 UTCMay 26, 08:34 UTC14h 35m
2026-05-25 KAL081 ICN → JFK May 25, 01:55 UTCMay 25, 15:05 UTC13h 10m
2026-05-23 KAL082 JFK → ICN May 23, 18:10 UTCMay 24, 08:30 UTC14h 20m
2026-05-23 KAL081 ICN → JFK May 23, 01:35 UTCMay 23, 15:05 UTC13h 29m
2026-05-21 KAL082 JFK → ICN May 21, 17:40 UTCMay 22, 08:15 UTC14h 35m
2026-05-21 KAL081 ICN → JFK May 21, 02:00 UTCMay 21, 15:00 UTC13h 0m
2026-05-20 KAL704 NRT → ICN May 20, 05:20 UTCMay 20, 07:25 UTC2h 5m
2026-05-20 KAL703 ICN → NRT May 20, 01:50 UTCMay 20, 03:40 UTC1h 50m
2026-05-18 KAL082 JFK → ICN May 18, 18:20 UTCMay 19, 09:45 UTC15h 24m
2026-05-18 KAL081 ICN → JFK May 18, 01:25 UTCMay 18, 15:05 UTC13h 40m
2026-05-17 KAL012 LAX → ICN May 17, 07:15 UTCMay 17, 19:15 UTC12h 0m
2026-05-16 KAL011 ICN → LAX May 16, 11:35 UTCMay 16, 22:10 UTC10h 35m
2026-05-14 KAL082 JFK → ICN May 14, 18:05 UTCMay 15, 08:10 UTC14h 5m
2026-05-14 KAL081 ICN → JFK May 14, 01:30 UTCMay 14, 14:55 UTC13h 25m
2026-05-13 KAL012 LAX → ICN May 13, 07:15 UTCMay 13, 19:10 UTC11h 55m
2026-05-12 KAL011 ICN → LAX May 12, 11:15 UTCMay 12, 21:50 UTC10h 35m
2026-05-11 KAL082 JFK → ICN May 11, 17:45 UTCMay 12, 08:15 UTC14h 30m
2026-05-11 KAL081 ICN → JFK May 11, 01:34 UTCMay 11, 14:45 UTC13h 10m
2026-05-10 KAL012 LAX → ICN May 10, 07:19 UTCMay 10, 19:19 UTC12h 0m
2026-05-09 KAL011 ICN → LAX May 9, 11:15 UTCMay 9, 21:45 UTC10h 30m
2026-05-08 KAL012 LAX → ICN May 8, 07:14 UTCMay 8, 19:45 UTC12h 30m
2026-05-07 KAL011 ICN → LAX May 7, 11:10 UTCMay 7, 21:45 UTC10h 35m
2026-05-06 KAL704 NRT → ICN May 6, 05:30 UTCMay 6, 07:35 UTC2h 5m
2026-05-06 KAL703 ICN → NRT May 6, 01:55 UTCMay 6, 03:50 UTC1h 55m
2026-05-05 KAL012 LAX → ICN May 5, 07:05 UTCMay 5, 19:15 UTC12h 10m
2026-05-04 KAL011 ICN → LAX May 4, 11:15 UTCMay 4, 21:50 UTC10h 36m
2026-05-04 KAL2022 TPE → ICN May 4, 06:00 UTCMay 4, 07:50 UTC1h 50m
2026-05-04 KAL2021 ICN → TPE May 4, 01:55 UTCMay 4, 04:34 UTC2h 40m
2026-05-02 KAL082 JFK → ICN May 2, 18:05 UTCMay 3, 09:10 UTC15h 4m
2026-05-02 KAL081 ICN → JFK May 2, 01:40 UTCMay 2, 14:45 UTC13h 5m
2026-05-01 KAL012 LAX → ICN May 1, 07:10 UTCMay 1, 20:15 UTC13h 5m
2026-04-30 KAL011 ICN → LAX Apr 30, 11:35 UTCApr 30, 21:40 UTC10h 5m
2026-04-29 KAL082 JFK → ICN Apr 29, 18:00 UTCApr 30, 09:00 UTC14h 59m
2026-04-29 KAL081 ICN → JFK Apr 29, 01:30 UTCApr 29, 14:30 UTC13h 1m
2026-04-27 KAL082 JFK → ICN Apr 27, 17:50 UTCApr 28, 08:55 UTC15h 5m
2026-04-27 KAL081 ICN → JFK Apr 27, 01:30 UTCApr 27, 14:45 UTC13h 15m
2026-04-26 KAL012 LAX → ICN Apr 26, 07:10 UTCApr 26, 19:40 UTC12h 30m
2026-04-25 KAL011 ICN → LAX Apr 25, 11:20 UTCApr 25, 21:35 UTC10h 15m
2026-04-23 KAL2022 TPE → ICN Apr 23, 05:55 UTCApr 23, 07:55 UTC2h 0m
2026-04-23 KAL2021 ICN → TPE Apr 23, 04:00 UTCApr 23, 04:25 UTC25m
2026-04-23 KAL2021 ICN → TPE Apr 23, 02:15 UTCApr 23, 02:45 UTC30m
2026-04-22 KAL012 LAX → ICN Apr 22, 07:50 UTCApr 22, 20:10 UTC12h 20m
2026-04-21 KAL011 ICN → LAX Apr 21, 11:20 UTCApr 21, 21:55 UTC10h 35m
2026-04-18 KAL082 JFK → ICN Apr 18, 07:25 UTCApr 18, 09:20 UTC1h 55m
2026-04-18 KAL082 JFK → ICN Apr 18, 01:25 UTCApr 18, 02:20 UTC55m
2026-04-17 KAL082 JFK → ICN Apr 17, 23:30 UTCApr 18, 01:20 UTC1h 50m

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 HL7621 page for operator, model, and routing details .

Mode-S 71BE21 frequently asked

What is Mode-S code 71BE21?
71BE21 is an ICAO 24-bit transponder address. Allocated to Korea, South. Assigned to HL7621.
Where is Mode-S 71BE21 registered?
Mode-S code 71BE21 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 71BE21 broadcasting right now?
Yes. Mode-S 71BE21 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 71BE21, octal 34337041, decimal 7,454,241.
What flights does 71BE21 operate?
Mode-S 71BE21 has broadcast 8 distinct callsigns, including KAL082, KAL081, KAL012, KAL011, KAL704.