Apparatus

Try JFK, AAL1290, BAW, or N225AN.

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
No current signal · last broadcast 3h ago
Flights observed
120
Distinct callsigns
8
Country
KR
Last broadcast
3h ago

Last known position

Most recent position reported by Mode-S 71BE21.

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 - 35 2026-07-12
KAL081 - 32 2026-07-14
KAL012 - 16 2026-07-10
KAL011 - 16 2026-07-09
KAL704 - 8 2026-07-11
KAL703 - 8 2026-07-11
KAL2021 Korean Air 3 2026-05-04
KAL2022 Korean Air 2 2026-05-04

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 KAL081 - Jul 14, 01:25 UTCJul 14, 03:10 UTC1h 45m
2026-07-12 KAL082 - Jul 12, 18:01 UTCJul 13, 08:25 UTC14h 25m
2026-07-12 KAL081 ICN → JFK Jul 12, 01:40 UTCJul 12, 15:05 UTC13h 25m
2026-07-11 KAL704 - Jul 11, 05:15 UTCJul 11, 07:15 UTC2h 0m
2026-07-11 KAL703 - Jul 11, 01:40 UTCJul 11, 03:30 UTC1h 50m
2026-07-10 KAL012 - Jul 10, 07:30 UTCJul 10, 19:40 UTC12h 10m
2026-07-09 KAL011 ICN → LAX Jul 9, 11:55 UTCJul 9, 23:05 UTC11h 10m
2026-07-08 KAL704 - Jul 8, 05:10 UTCJul 8, 07:05 UTC1h 55m
2026-07-08 KAL703 ICN → NRT Jul 8, 01:45 UTCJul 8, 03:35 UTC1h 50m
2026-07-07 KAL012 - Jul 7, 07:40 UTCJul 7, 19:45 UTC12h 5m
2026-07-06 KAL011 - Jul 6, 11:15 UTCJul 6, 22:05 UTC10h 50m
2026-07-04 KAL082 JFK → ICN Jul 4, 18:30 UTCJul 5, 09:00 UTC14h 30m
2026-07-04 KAL081 ICN → JFK Jul 4, 01:30 UTCJul 4, 15:30 UTC14h 0m
2026-07-02 KAL082 JFK → ICN Jul 2, 18:10 UTCJul 3, 08:45 UTC14h 35m
2026-07-02 KAL081 ICN → JFK Jul 2, 01:45 UTCJul 2, 15:10 UTC13h 25m
2026-07-01 KAL012 - Jul 1, 07:05 UTCJul 1, 19:40 UTC12h 35m
2026-06-30 KAL011 - Jun 30, 11:10 UTCJun 30, 21:40 UTC10h 30m
2026-06-29 KAL704 NRT → ICN Jun 29, 05:15 UTCJun 29, 07:15 UTC2h 0m
2026-06-29 KAL703 ICN → NRT Jun 29, 01:39 UTCJun 29, 03:25 UTC1h 45m
2026-06-28 KAL012 LAX → ICN Jun 28, 07:25 UTCJun 28, 19:55 UTC12h 30m
2026-06-27 KAL011 - Jun 27, 11:04 UTCJun 27, 21:34 UTC10h 30m
2026-06-25 KAL082 - Jun 25, 17:39 UTCJun 26, 08:30 UTC14h 50m
2026-06-25 KAL081 ICN → JFK Jun 25, 01:35 UTCJun 25, 14:39 UTC13h 5m
2026-06-23 KAL082 JFK → ICN Jun 23, 18:04 UTCJun 24, 08:35 UTC14h 30m
2026-06-23 KAL081 ICN → JFK Jun 23, 01:35 UTCJun 23, 14:49 UTC13h 15m
2026-06-21 KAL082 JFK → ICN Jun 21, 17:54 UTCJun 22, 08:25 UTC14h 30m
2026-06-21 KAL081 ICN → JFK Jun 21, 01:35 UTCJun 21, 15:15 UTC13h 40m
2026-06-19 KAL082 JFK → ICN Jun 19, 18:30 UTCJun 20, 08:29 UTC14h 0m
2026-06-19 KAL081 ICN → JFK Jun 19, 02:14 UTCJun 19, 15:34 UTC13h 20m
2026-06-17 KAL082 JFK → ICN Jun 17, 17:55 UTCJun 18, 08:35 UTC14h 40m
2026-06-17 KAL081 ICN → JFK Jun 17, 01:45 UTCJun 17, 15:15 UTC13h 30m
2026-06-15 KAL082 JFK → ICN Jun 15, 17:54 UTCJun 16, 08:39 UTC14h 45m
2026-06-15 KAL081 ICN → JFK Jun 15, 01:50 UTCJun 15, 15:10 UTC13h 20m
2026-06-14 KAL012 LAX → ICN Jun 14, 07:20 UTCJun 14, 19:30 UTC12h 10m
2026-06-13 KAL011 - Jun 13, 11:20 UTCJun 13, 21:40 UTC10h 20m
2026-06-12 KAL012 LAX → ICN Jun 12, 08:05 UTCJun 12, 20:15 UTC12h 10m
2026-06-11 KAL011 ICN → LAX Jun 11, 11:15 UTCJun 11, 21:30 UTC10h 15m
2026-06-09 KAL082 JFK → ICN Jun 9, 18:10 UTCJun 10, 09:10 UTC15h 0m
2026-06-09 KAL081 ICN → JFK Jun 9, 01:45 UTCJun 9, 15:15 UTC13h 30m
2026-06-07 KAL082 JFK → ICN Jun 7, 18:05 UTCJun 8, 09:00 UTC14h 55m
2026-06-07 KAL081 ICN → JFK Jun 7, 01:20 UTCJun 7, 14:55 UTC13h 35m
2026-06-05 KAL082 JFK → ICN Jun 5, 18:10 UTCJun 6, 09:00 UTC14h 50m
2026-06-05 KAL081 ICN → JFK Jun 5, 01:45 UTCJun 5, 15:15 UTC13h 30m
2026-06-03 KAL082 JFK → ICN Jun 3, 18:05 UTCJun 4, 08:45 UTC14h 40m
2026-06-03 KAL081 ICN → JFK Jun 3, 01:30 UTCJun 3, 15:10 UTC13h 40m
2026-06-02 KAL012 LAX → ICN Jun 2, 07:30 UTCJun 2, 19:05 UTC11h 35m
2026-06-01 KAL011 ICN → LAX Jun 1, 11:10 UTCJun 1, 21:30 UTC10h 20m
2026-05-31 KAL082 JFK → ICN May 31, 08:25 UTCMay 31, 08:50 UTC25m
2026-05-30 KAL082 JFK → ICN May 30, 17:50 UTCMay 31, 01:11 UTC7h 21m
2026-05-30 KAL081 ICN → JFK May 30, 01:50 UTCMay 30, 15:00 UTC13h 10m

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?
No active broadcast right now. Last signal was 3h ago.
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.