Apparatus

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sensors Mode-S transponder

71C208

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

Currently assigned to HL8208 · BOEING 777-300ER

Hex
71C208
Octal
34341010
Decimal
7,455,240
Country
KR
Tail
HL8208
Type
B77W
No current signal · last broadcast 3h ago
Flights observed
84
Distinct callsigns
20
Country
KR
Last broadcast
3h ago

Last known position

Most recent position reported by Mode-S 71C208.

Country allocation

The ICAO 24-bit address 71C208 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 10 2026-05-29
KAL092 Korean Air 9 2026-05-29
KAL476 Korean Air 8 2026-05-26
KAL475 Korean Air 6 2026-05-28
KAL038 Korean Air 6 2026-04-20
KAL651 Korean Air 5 2026-05-18
KAL926 Korean Air 4 2026-05-22
KAL652 Korean Air 4 2026-05-18
KAL623 Korean Air 4 2026-04-23
KAL622 Korean Air 4 2026-04-18
KAL037 Korean Air 4 2026-04-20
KAL624 Korean Air 3 2026-04-23
KAL946 Korean Air 2 2026-04-23
KAL925 Korean Air 2 2026-05-21
KAL788 Korean Air 2 2026-05-24
KAL787 Korean Air 2 2026-05-23
KAL621 Korean Air 2 2026-04-18
KAL945 Korean Air 1 2026-04-22
KAL888 Korean Air 1 2026-05-23
KAL874 - 1 2026-05-24

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-29 KAL092 BOS → ICN May 29, 18:35 UTCMay 30, 02:25 UTC7h 50m
2026-05-29 KAL091 ICN → BOS May 29, 00:45 UTCMay 29, 14:35 UTC13h 50m
2026-05-28 KAL475 ICN → SGN May 28, 10:40 UTCMay 28, 21:55 UTC11h 15m
2026-05-27 KAL092 BOS → ICN May 27, 16:55 UTCMay 28, 08:25 UTC15h 30m
2026-05-27 KAL091 ICN → BOS May 27, 00:49 UTCMay 27, 14:20 UTC13h 31m
2026-05-26 KAL476 SGN → ICN May 26, 10:10 UTCMay 26, 22:09 UTC12h 0m
2026-05-25 KAL092 BOS → ICN May 25, 17:00 UTCMay 26, 08:15 UTC15h 15m
2026-05-25 KAL091 ICN → BOS May 25, 01:55 UTCMay 25, 14:35 UTC12h 40m
2026-05-24 KAL874 - May 24, 07:30 UTCMay 24, 07:55 UTC25m
2026-05-24 KAL873 - May 24, 04:30 UTCMay 24, 04:55 UTC25m
2026-05-24 KAL788 FUK → ICN May 24, 01:45 UTCMay 24, 02:50 UTC1h 5m
2026-05-23 KAL787 ICN → FUK May 23, 23:10 UTCMay 23, 23:50 UTC40m
2026-05-23 - ICN → ICN May 23, 17:10 UTCMay 23, 17:20 UTC10m
2026-05-23 KAL888 PVG → ICN May 23, 02:30 UTCMay 23, 07:35 UTC5h 5m
2026-05-22 KAL476 SGN → ICN May 22, 10:10 UTCMay 22, 22:20 UTC12h 10m
2026-05-22 KAL926 AMS → ICN May 22, 06:55 UTCMay 22, 07:25 UTC30m
2026-05-21 KAL926 AMS → ICN May 21, 19:45 UTCMay 21, 22:15 UTC2h 30m
2026-05-21 KAL925 ICN → AMS May 21, 04:50 UTCMay 21, 17:00 UTC12h 10m
2026-05-21 KAL925 ICN → AMS May 21, 03:35 UTCMay 21, 03:50 UTC15m
2026-05-20 KAL476 SGN → ICN May 20, 10:35 UTCMay 20, 22:35 UTC12h 0m
2026-05-19 KAL092 BOS → ICN May 19, 17:20 UTCMay 20, 08:55 UTC15h 36m
2026-05-19 KAL091 ICN → BOS May 19, 01:05 UTCMay 19, 14:20 UTC13h 15m
2026-05-18 KAL652 BKK → ICN May 18, 16:55 UTCMay 18, 21:55 UTC4h 59m
2026-05-18 KAL651 ICN → BKK May 18, 09:25 UTCMay 18, 14:25 UTC5h 0m
2026-05-17 KAL788 FUK → ICN May 17, 01:50 UTCMay 17, 02:50 UTC1h 0m
2026-05-16 KAL787 ICN → FUK May 16, 23:15 UTCMay 16, 23:50 UTC35m
2026-05-16 KAL194P PUS → ICN May 16, 08:01 UTCMay 16, 08:41 UTC40m
2026-04-23 KAL193F GMP → ICN Apr 23, 22:10 UTCApr 23, 22:40 UTC30m
2026-04-23 KAL624 MNL → ICN Apr 23, 16:20 UTCApr 23, 19:25 UTC3h 4m
2026-04-23 KAL623 ICN → MNL Apr 23, 10:35 UTCApr 23, 14:15 UTC3h 40m
2026-04-23 KAL946 FRA → ICN Apr 23, 05:25 UTCApr 23, 05:45 UTC20m
2026-04-22 KAL946 FRA → ICN Apr 22, 18:30 UTCApr 23, 04:35 UTC10h 5m
2026-04-22 KAL945 ICN → FRA Apr 22, 02:25 UTCApr 22, 15:25 UTC13h 0m
2026-04-21 KAL476 SGN → ICN Apr 21, 19:25 UTCApr 21, 22:10 UTC2h 45m
2026-04-21 KAL476 SGN → ICN Apr 21, 17:40 UTCApr 21, 17:50 UTC10m
2026-04-21 KAL475 ICN → SGN Apr 21, 11:05 UTCApr 21, 13:45 UTC2h 40m
2026-04-20 KAL038 ORD → ICN Apr 20, 17:50 UTCApr 21, 08:25 UTC14h 35m
2026-04-20 KAL037 ICN → ORD Apr 20, 02:05 UTCApr 20, 14:30 UTC12h 25m
2026-04-19 KAL652 BKK → ICN Apr 19, 17:25 UTCApr 19, 22:15 UTC4h 50m
2026-04-19 KAL651 ICN → BKK Apr 19, 09:30 UTCApr 19, 14:35 UTC5h 5m
2026-04-18 KAL476 SGN → ICN Apr 18, 19:10 UTCApr 18, 21:40 UTC2h 30m
2026-04-18 KAL475 ICN → SGN Apr 18, 10:15 UTCApr 18, 13:10 UTC2h 55m
2026-04-18 KAL622 MNL → ICN Apr 18, 07:25 UTCApr 18, 07:50 UTC25m
2026-04-18 KAL622 MNL → ICN Apr 18, 05:25 UTCApr 18, 07:20 UTC1h 55m
2026-04-18 KAL622 MNL → ICN Apr 18, 04:45 UTCApr 18, 06:15 UTC1h 30m
2026-04-18 KAL622 MNL → ICN Apr 18, 04:40 UTCApr 18, 07:50 UTC3h 10m
2026-04-18 KAL621 ICN → MNL Apr 18, 01:25 UTCApr 18, 02:45 UTC1h 20m
2026-04-17 KAL621 ICN → MNL Apr 17, 23:25 UTCApr 18, 01:20 UTC1h 55m
2026-04-17 KAL624 - Apr 17, 17:25 UTCApr 17, 19:10 UTC1h 45m
2026-04-17 KAL624 - Apr 17, 16:05 UTCApr 17, 17:15 UTC1h 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 HL8208 page for operator, model, and routing details .

Mode-S 71C208 frequently asked

What is Mode-S code 71C208?
71C208 is an ICAO 24-bit transponder address. Allocated to Korea, South. Assigned to HL8208.
Where is Mode-S 71C208 registered?
Mode-S code 71C208 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 71C208 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 71C208, octal 34341010, decimal 7,455,240.
What flights does 71C208 operate?
Mode-S 71C208 has broadcast 20 distinct callsigns, including KAL091, KAL092, KAL476, KAL475, KAL038.