Apparatus

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sensors Mode-S transponder

71C393

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

Currently assigned to HL8393 · BOEING 787-9 Dreamliner

Hex
71C393
Octal
34341623
Decimal
7,455,635
Country
KR
Tail
HL8393
Type
B789
No current signal · last broadcast 6h ago
Flights observed
162
Distinct callsigns
20
Country
KR
Last broadcast
6h ago

Last known position

Most recent position reported by Mode-S 71C393.

Country allocation

The ICAO 24-bit address 71C393 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
KAL480 - 8 2026-07-10
KAL963 Korean Air 7 2026-04-16
KAL956 - 7 2026-07-13
KAL955 - 7 2026-07-13
KAL677 - 7 2026-07-11
KAL964 Korean Air 6 2026-04-17
KAL922 Korean Air 6 2026-05-16
KAL921 Korean Air 6 2026-05-15
KAL498 Korean Air 6 2026-05-25
KAL647 Korean Air 5 2026-05-09
KAL479 - 5 2026-06-27
KAL032 - 5 2026-07-09
KAL031 - 5 2026-07-09
KAL874 - 4 2026-06-24
KAL696 - 4 2026-07-04
KAL678 - 4 2026-07-11
KAL648 Korean Air 4 2026-05-10
KAL472 - 4 2026-07-03
KAL432 Korean Air 4 2026-05-28
KAL411 Korean Air 4 2026-05-31

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-13 KAL956 - Jul 13, 18:40 UTCJul 13, 20:30 UTC1h 50m
2026-07-13 KAL955 - Jul 13, 15:30 UTCJul 13, 16:00 UTC30m
2026-07-13 KAL955 - Jul 13, 06:10 UTCJul 13, 15:00 UTC8h 50m
2026-07-13 KAL955 - Jul 13, 05:01 UTCJul 13, 05:20 UTC20m
2026-07-13 KAL938 - Jul 13, 02:35 UTCJul 13, 02:55 UTC20m
2026-07-12 KAL938 - Jul 12, 16:45 UTCJul 13, 01:45 UTC9h 0m
2026-07-12 KAL937 - Jul 12, 03:05 UTCJul 12, 13:55 UTC10h 50m
2026-07-12 KAL937 - Jul 12, 01:55 UTCJul 12, 02:10 UTC15m
2026-07-11 KAL678 - Jul 11, 22:20 UTCJul 11, 22:40 UTC20m
2026-07-11 KAL677 - Jul 11, 09:45 UTCJul 11, 19:15 UTC9h 30m
2026-07-10 KAL480 - Jul 10, 12:10 UTCJul 11, 06:10 UTC18h 1m
2026-07-09 KAL032 DFW → ICN Jul 9, 17:40 UTCJul 10, 07:30 UTC13h 50m
2026-07-09 KAL031 ICN → DFW Jul 9, 00:50 UTCJul 9, 13:00 UTC12h 10m
2026-07-07 KAL480 - Jul 7, 11:15 UTCJul 8, 05:40 UTC18h 25m
2026-07-07 KAL2022 TPE → ICN Jul 7, 05:45 UTCJul 7, 07:50 UTC2h 5m
2026-07-07 KAL2021 - Jul 7, 01:55 UTCJul 7, 03:50 UTC1h 55m
2026-07-06 KAL677 - Jul 6, 09:20 UTCJul 6, 22:30 UTC13h 10m
2026-07-06 KAL956 - Jul 6, 04:15 UTCJul 6, 04:35 UTC20m
2026-07-05 KAL956 - Jul 5, 19:25 UTCJul 6, 03:20 UTC7h 55m
2026-07-05 KAL2901 - Jul 5, 16:35 UTCJul 5, 16:55 UTC20m
2026-07-05 KAL2901 - Jul 5, 07:30 UTCJul 5, 15:55 UTC8h 25m
2026-07-05 KAL2901 - Jul 5, 06:20 UTCJul 5, 06:35 UTC15m
2026-07-05 KAL788 - Jul 5, 02:05 UTCJul 5, 03:05 UTC1h 0m
2026-07-04 KAL787 ICN → FUK Jul 4, 23:25 UTCJul 5, 00:05 UTC40m
2026-07-04 KAL696 - Jul 4, 20:50 UTCJul 4, 21:10 UTC20m
2026-07-04 KAL696 - Jul 4, 15:25 UTCJul 4, 17:20 UTC1h 55m
2026-07-04 KAL695 - Jul 4, 06:25 UTCJul 4, 12:10 UTC5h 45m
2026-07-04 KAL788 - Jul 4, 01:45 UTCJul 4, 02:50 UTC1h 5m
2026-07-03 KAL787 ICN → FUK Jul 3, 23:15 UTCJul 4, 00:00 UTC45m
2026-07-03 KAL472 - Jul 3, 01:25 UTCJul 3, 12:35 UTC11h 10m
2026-07-02 KAL467 ICN → ICN Jul 2, 11:20 UTCJul 2, 22:20 UTC11h 0m
2026-07-01 KAL408 BNE → ICN Jul 1, 23:05 UTCJul 2, 08:15 UTC9h 10m
2026-07-01 KAL407 ICN → BNE Jul 1, 11:30 UTCJul 1, 20:30 UTC9h 0m
2026-06-30 KAL032 DFW → ICN Jun 30, 17:30 UTCJul 1, 07:10 UTC13h 40m
2026-06-30 KAL031 ICN → DFW Jun 30, 01:14 UTCJun 30, 13:25 UTC12h 11m
2026-06-29 KAL472 - Jun 29, 00:54 UTCJun 29, 12:09 UTC11h 15m
2026-06-28 KAL467 ICN → ICN Jun 28, 11:35 UTCJun 28, 21:59 UTC10h 25m
2026-06-27 KAL479 ICN → ICN Jun 27, 11:20 UTCJun 28, 05:29 UTC18h 10m
2026-06-26 KAL076 YVR → ICN Jun 26, 08:10 UTCJun 26, 18:39 UTC10h 30m
2026-06-25 KAL075 ICN → YVR Jun 25, 13:55 UTCJun 25, 22:54 UTC9h 0m
2026-06-24 KAL479 ICN → ICN Jun 24, 11:09 UTCJun 25, 05:39 UTC18h 30m
2026-06-24 KAL874 - Jun 24, 07:54 UTCJun 24, 08:20 UTC25m
2026-06-24 KAL873 - Jun 24, 04:30 UTCJun 24, 04:44 UTC15m
2026-06-23 KAL196P PUS → ICN Jun 23, 12:15 UTCJun 23, 12:55 UTC40m
2026-06-10 KAL195F ICN → PUS Jun 10, 22:00 UTCJun 10, 22:30 UTC30m
2026-06-09 KAL480 SGN → ICN Jun 9, 11:10 UTCJun 10, 05:40 UTC18h 30m
2026-06-09 KAL887 ICN → PVG Jun 9, 02:30 UTCJun 9, 07:40 UTC5h 10m
2026-06-04 KAL480 SGN → ICN Jun 4, 11:15 UTCJun 5, 05:40 UTC18h 25m
2026-06-04 KAL867 ICN → CAN Jun 4, 00:15 UTCJun 4, 08:00 UTC7h 45m
2026-06-03 KAL874 - Jun 3, 07:25 UTCJun 3, 07:45 UTC20m

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 HL8393 page for operator, model, and routing details .

Mode-S 71C393 frequently asked

What is Mode-S code 71C393?
71C393 is an ICAO 24-bit transponder address. Allocated to Korea, South. Assigned to HL8393.
Where is Mode-S 71C393 registered?
Mode-S code 71C393 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 71C393 broadcasting right now?
No active broadcast right now. Last signal was 6h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 71C393, octal 34341623, decimal 7,455,635.
What flights does 71C393 operate?
Mode-S 71C393 has broadcast 20 distinct callsigns, including KAL480, KAL963, KAL956, KAL955, KAL677.