Apparatus

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sensors Mode-S transponder

71C345

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

Currently assigned to HL8345 · BOEING 787-9 Dreamliner

Hex
71C345
Octal
34341505
Decimal
7,455,557
Country
KR
Tail
HL8345
Type
B789
No current signal · last broadcast Jul 26, 13:50 UTC
Flights observed
228
Distinct callsigns
20
Country
KR
Last broadcast
Jul 26, 13:50 UTC

Last known position

Most recent position reported by Mode-S 71C345.

Country allocation

The ICAO 24-bit address 71C345 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
KAL955 - 14 2026-07-15
KAL032 Korean Air 11 2026-07-25
KAL956 - 10 2026-07-16
KAL696 Korean Air 10 2026-06-06
KAL648 Korean Air 10 2026-05-23
KAL647 Korean Air 10 2026-05-22
KAL471 - 10 2026-06-19
KAL8054 - 9 2026-07-21
KAL498 Korean Air 9 2026-06-21
KAL914 Korean Air 8 2026-05-18
KAL695 Korean Air 8 2026-06-06
KAL480 - 7 2026-07-12
KAL468 Korean Air 7 2026-06-10
KAL411 - 7 2026-06-12
KAL031 Korean Air 7 2026-07-25
KAL913 Korean Air 6 2026-05-17
KAL8053 Korean Air 6 2026-07-20
KAL497 - 5 2026-06-21
KAL467 - 5 2026-06-24
KAL432 - 5 2026-07-16

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 KAL479 ICN → SGN Jul 26, 11:10 UTCJul 26, 13:50 UTC2h 40m
2026-07-25 KAL032 DFW → ICN Jul 25, 17:40 UTCJul 26, 07:55 UTC14h 16m
2026-07-25 KAL031 ICN → DFW Jul 25, 01:15 UTCJul 25, 13:40 UTC12h 25m
2026-07-21 KAL8054 - Jul 21, 07:25 UTCJul 21, 09:35 UTC2h 10m
2026-07-21 KAL8054 - Jul 21, 00:40 UTCJul 21, 00:50 UTC10m
2026-07-20 KAL8053 ICN → HNL Jul 20, 14:00 UTCJul 20, 16:00 UTC2h 0m
2026-07-20 KAL8054 - Jul 20, 07:45 UTCJul 20, 10:05 UTC2h 20m
2026-07-20 KAL8054 - Jul 20, 01:10 UTCJul 20, 01:20 UTC10m
2026-07-19 KAL8053 ICN → HNL Jul 19, 13:50 UTCJul 19, 15:55 UTC2h 5m
2026-07-19 KAL8054 - Jul 19, 07:40 UTCJul 19, 09:50 UTC2h 10m
2026-07-19 KAL8054 - Jul 19, 00:50 UTCJul 19, 01:00 UTC10m
2026-07-18 KAL8053 ICN → HNL Jul 18, 13:55 UTCJul 18, 15:55 UTC2h 0m
2026-07-17 KAL922 LIS → ICN Jul 17, 21:39 UTCJul 18, 09:45 UTC12h 6m
2026-07-17 KAL921 ICN → LIS Jul 17, 05:39 UTCJul 17, 19:15 UTC13h 35m
2026-07-17 KAL921 - Jul 17, 04:25 UTCJul 17, 04:49 UTC25m
2026-07-16 KAL432 ICN → ICN Jul 16, 07:35 UTCJul 16, 22:25 UTC14h 50m
2026-07-16 KAL956 - Jul 16, 02:55 UTCJul 16, 03:20 UTC25m
2026-07-15 KAL956 - Jul 15, 18:40 UTCJul 16, 02:10 UTC7h 30m
2026-07-15 KAL955 - Jul 15, 06:35 UTCJul 15, 16:10 UTC9h 35m
2026-07-15 KAL955 - Jul 15, 05:20 UTCJul 15, 05:40 UTC20m
2026-07-15 KAL788 - Jul 15, 01:55 UTCJul 15, 03:00 UTC1h 5m
2026-07-14 KAL787 - Jul 14, 23:30 UTCJul 15, 00:15 UTC45m
2026-07-14 KAL472 ICN → ICN Jul 14, 00:55 UTCJul 14, 13:15 UTC12h 20m
2026-07-13 KAL678 - Jul 13, 09:00 UTCJul 13, 22:25 UTC13h 25m
2026-07-12 KAL480 - Jul 12, 11:20 UTCJul 13, 05:45 UTC18h 25m
2026-07-11 KAL479 ICN → ICN Jul 11, 13:20 UTCJul 12, 05:50 UTC16h 30m
2026-07-10 KAL032 DFW → ICN Jul 10, 17:40 UTCJul 11, 07:00 UTC13h 20m
2026-07-10 KAL031 ICN → DFW Jul 10, 01:00 UTCJul 10, 13:30 UTC12h 30m
2026-07-09 KAL432 ICN → ICN Jul 9, 07:25 UTCJul 9, 22:20 UTC14h 55m
2026-07-09 KAL956 - Jul 9, 03:20 UTCJul 9, 03:35 UTC15m
2026-07-08 KAL956 - Jul 8, 18:55 UTCJul 9, 02:30 UTC7h 35m
2026-07-08 KAL955 - Jul 8, 16:05 UTCJul 8, 16:30 UTC25m
2026-07-08 KAL955 - Jul 8, 06:45 UTCJul 8, 15:30 UTC8h 45m
2026-07-08 KAL955 - Jul 8, 05:30 UTCJul 8, 05:50 UTC20m
2026-07-08 KAL788 - Jul 8, 01:50 UTCJul 8, 02:55 UTC1h 5m
2026-07-07 KAL787 ICN → FUK Jul 7, 23:25 UTCJul 8, 00:10 UTC45m
2026-07-07 KAL8054 - Jul 7, 08:05 UTCJul 7, 10:15 UTC2h 10m
2026-07-07 KAL8054 - Jul 7, 01:00 UTCJul 7, 01:15 UTC15m
2026-07-06 KAL8053 - Jul 6, 13:55 UTCJul 6, 21:50 UTC7h 55m
2026-07-06 KAL8054 - Jul 6, 01:10 UTCJul 6, 10:35 UTC9h 25m
2026-07-05 KAL8053 - Jul 5, 21:50 UTCJul 5, 22:00 UTC10m
2026-07-05 KAL8053 - Jul 5, 13:55 UTCJul 5, 15:40 UTC1h 45m
2026-07-04 KAL431 ICN → ICN Jul 4, 07:35 UTCJul 4, 22:20 UTC14h 45m
2026-07-04 KAL956 - Jul 4, 03:20 UTCJul 4, 03:45 UTC25m
2026-07-03 KAL956 - Jul 3, 18:40 UTCJul 4, 02:30 UTC7h 50m
2026-07-03 KAL955 - Jul 3, 15:50 UTCJul 3, 16:15 UTC25m
2026-07-03 KAL955 - Jul 3, 06:30 UTCJul 3, 15:15 UTC8h 45m
2026-07-03 KAL955 - Jul 3, 05:20 UTCJul 3, 05:35 UTC15m
2026-07-03 KAL706 - Jul 3, 00:30 UTCJul 3, 02:35 UTC2h 5m
2026-07-02 KAL705 ICN → NRT Jul 2, 09:55 UTCJul 2, 11:55 UTC2h 0m

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 HL8345 page for operator, model, and routing details .

Mode-S 71C345 frequently asked

What is Mode-S code 71C345?
71C345 is an ICAO 24-bit transponder address. Allocated to Korea, South. Assigned to HL8345.
Where is Mode-S 71C345 registered?
Mode-S code 71C345 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 71C345 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 13:50 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 71C345, octal 34341505, decimal 7,455,557.
What flights does 71C345 operate?
Mode-S 71C345 has broadcast 20 distinct callsigns, including KAL955, KAL032, KAL956, KAL696, KAL648.