Apparatus

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sensors Mode-S transponder

71C210

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

Currently assigned to HL8210 · BOEING 777-300ER

Hex
71C210
Octal
34341020
Decimal
7,455,248
Country
KR
Tail
HL8210
Type
B77W
Broadcasting now · callsign KAL091 · 31,000 ft
Flights observed
96
Distinct callsigns
20
Country
KR
Last broadcast
5m ago

Current position

71C210 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 71C210 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
KAL091 Korean Air 22 2026-05-30
KAL092 Korean Air 19 2026-05-28
KAL926 Korean Air 6 2026-05-25
KAL925 Korean Air 6 2026-05-24
KAL475 Korean Air 5 2026-05-13
KAL652 Korean Air 4 2026-05-09
KAL651 Korean Air 4 2026-05-09
KAL946 Korean Air 3 2026-05-08
KAL788 Korean Air 3 2026-05-19
KAL787 Korean Air 3 2026-05-18
KAL476 Korean Air 3 2026-04-25
KAL766 Korean Air 2 2026-04-16
KAL765 Korean Air 2 2026-04-16
KAL602 Korean Air 2 2026-04-18
KAL945 Korean Air 1 2026-05-08
KAL644 Korean Air 1 2026-05-19
KAL643 Korean Air 1 2026-05-19
KAL601 Korean Air 1 2026-04-16
KAL416 Korean Air 1 2026-04-26
KAL196P Korean Air 1 2026-05-16

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-30 KAL091 ICN → BOS May 30, 01:05 UTCMay 30, 02:00 UTC55m
2026-05-28 KAL092 BOS → ICN May 28, 17:40 UTCMay 29, 09:00 UTC15h 20m
2026-05-28 KAL091 ICN → BOS May 28, 01:15 UTCMay 28, 14:05 UTC12h 50m
2026-05-26 KAL092 BOS → ICN May 26, 17:39 UTCMay 27, 08:25 UTC14h 46m
2026-05-26 KAL091 ICN → BOS May 26, 00:49 UTCMay 26, 14:20 UTC13h 30m
2026-05-25 KAL926 AMS → ICN May 25, 07:20 UTCMay 25, 07:40 UTC20m
2026-05-24 KAL926 AMS → ICN May 24, 20:00 UTCMay 24, 23:46 UTC3h 46m
2026-05-24 KAL925 ICN → AMS May 24, 08:40 UTCMay 24, 16:15 UTC7h 35m
2026-05-24 KAL925 ICN → AMS May 24, 03:15 UTCMay 24, 03:30 UTC15m
2026-05-22 KAL092 BOS → ICN May 22, 17:35 UTCMay 23, 09:10 UTC15h 34m
2026-05-22 KAL091 ICN → BOS May 22, 01:15 UTCMay 22, 14:25 UTC13h 10m
2026-05-20 KAL092 BOS → ICN May 20, 17:40 UTCMay 21, 08:30 UTC14h 50m
2026-05-20 KAL091 ICN → BOS May 20, 01:05 UTCMay 20, 14:00 UTC12h 56m
2026-05-19 KAL644 SIN → ICN May 19, 17:30 UTCMay 19, 20:30 UTC3h 0m
2026-05-19 KAL643 ICN → SIN May 19, 05:15 UTCMay 19, 10:50 UTC5h 35m
2026-05-19 KAL788 FUK → ICN May 19, 02:35 UTCMay 19, 03:10 UTC35m
2026-05-18 KAL787 ICN → FUK May 18, 23:40 UTCMay 19, 00:10 UTC30m
2026-05-17 KAL038 ORD → ICN May 17, 17:55 UTCMay 18, 07:25 UTC13h 30m
2026-05-17 KAL037 ICN → ORD May 17, 02:10 UTCMay 17, 15:05 UTC12h 55m
2026-05-16 KAL195P GMP → ICN May 16, 10:16 UTCMay 16, 10:35 UTC20m
2026-05-16 KAL1246 CJU → GMP May 16, 08:46 UTCMay 16, 09:16 UTC30m
2026-05-16 KAL1121 GMP → CJU May 16, 06:16 UTCMay 16, 06:41 UTC25m
2026-05-16 KAL196P PUS → ICN May 16, 04:45 UTCMay 16, 05:00 UTC15m
2026-05-16 KAL788 FUK → ICN May 16, 02:00 UTCMay 16, 02:55 UTC55m
2026-05-15 KAL787 ICN → FUK May 15, 23:30 UTCMay 15, 23:55 UTC25m
2026-05-14 KAL092 BOS → ICN May 14, 17:35 UTCMay 15, 07:35 UTC14h 0m
2026-05-14 KAL091 ICN → BOS May 14, 01:15 UTCMay 14, 14:45 UTC13h 30m
2026-05-13 KAL475 ICN → SGN May 13, 10:35 UTCMay 13, 21:55 UTC11h 20m
2026-05-12 KAL092 BOS → ICN May 12, 17:35 UTCMay 13, 08:30 UTC14h 55m
2026-05-12 KAL091 ICN → BOS May 12, 09:45 UTCMay 12, 14:25 UTC4h 40m
2026-05-10 KAL092 BOS → ICN May 10, 17:15 UTCMay 11, 07:40 UTC14h 25m
2026-05-10 KAL091 ICN → BOS May 10, 01:09 UTCMay 10, 14:04 UTC12h 55m
2026-05-09 KAL652 BKK → ICN May 9, 17:10 UTCMay 9, 22:05 UTC4h 55m
2026-05-09 KAL651 ICN → BKK May 9, 09:25 UTCMay 9, 14:25 UTC5h 0m
2026-05-08 KAL946 FRA → ICN May 8, 18:10 UTCMay 9, 04:15 UTC10h 5m
2026-05-08 KAL945 ICN → FRA May 8, 03:39 UTCMay 8, 15:30 UTC11h 50m
2026-05-06 KAL092 BOS → ICN May 6, 17:20 UTCMay 7, 08:00 UTC14h 40m
2026-05-06 KAL091 ICN → BOS May 6, 02:10 UTCMay 6, 14:30 UTC12h 20m
2026-05-06 KAL091 ICN → BOS May 6, 01:01 UTCMay 6, 01:20 UTC20m
2026-05-04 KAL092 BOS → ICN May 4, 17:45 UTCMay 5, 08:45 UTC15h 1m
2026-05-04 KAL091 ICN → BOS May 4, 01:00 UTCMay 4, 14:00 UTC13h 0m
2026-05-03 KAL475 ICN → SGN May 3, 10:35 UTCMay 3, 22:05 UTC11h 30m
2026-05-02 KAL092 BOS → ICN May 2, 17:15 UTCMay 3, 08:10 UTC14h 54m
2026-05-02 KAL091 ICN → BOS May 2, 02:25 UTCMay 2, 14:35 UTC12h 10m
2026-05-02 KAL091 ICN → BOS May 2, 01:20 UTCMay 2, 01:45 UTC25m
2026-05-01 KAL092 BOS → ICN May 1, 07:50 UTCMay 1, 08:25 UTC35m
2026-04-30 KAL092 BOS → ICN Apr 30, 17:15 UTCMay 1, 06:55 UTC13h 40m
2026-04-30 KAL091 ICN → BOS Apr 30, 01:10 UTCApr 30, 14:35 UTC13h 25m
2026-04-28 KAL092 BOS → ICN Apr 28, 17:25 UTCApr 29, 08:34 UTC15h 10m
2026-04-28 KAL091 ICN → BOS Apr 28, 00:55 UTCApr 28, 14:10 UTC13h 15m

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 HL8210 page for operator, model, and routing details .

Mode-S 71C210 frequently asked

What is Mode-S code 71C210?
71C210 is an ICAO 24-bit transponder address. Allocated to Korea, South. Assigned to HL8210.
Where is Mode-S 71C210 registered?
Mode-S code 71C210 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 71C210 broadcasting right now?
Yes. Mode-S 71C210 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 71C210, octal 34341020, decimal 7,455,248.
What flights does 71C210 operate?
Mode-S 71C210 has broadcast 20 distinct callsigns, including KAL091, KAL092, KAL926, KAL925, KAL475.