Apparatus

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sensors Mode-S transponder

71C081

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

Currently assigned to HL8081 · BOEING 787-9 Dreamliner

Hex
71C081
Octal
34340201
Decimal
7,454,849
Country
KR
Tail
HL8081
Type
B789
No current signal · last broadcast 5h ago
Flights observed
201
Distinct callsigns
20
Country
KR
Last broadcast
5h ago

Last known position

Most recent position reported by Mode-S 71C081.

Country allocation

The ICAO 24-bit address 71C081 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
KAL032 - 23 2026-07-13
KAL498 - 18 2026-07-10
KAL031 - 16 2026-07-13
KAL955 Korean Air 11 2026-06-12
KAL497 - 9 2026-07-10
KAL956 - 8 2026-06-13
KAL468 Korean Air 8 2026-07-04
KAL480 - 7 2026-06-21
KAL964 - 6 2026-07-08
KAL963 - 5 2026-07-07
KAL479 Korean Air 5 2026-05-26
KAL471 Korean Air 5 2026-06-09
KAL432 Korean Air 5 2026-06-19
KAL922 - 4 2026-07-02
KAL914 - 4 2026-07-05
KAL913 - 4 2026-07-05
KAL678 Korean Air 4 2026-05-30
KAL677 Korean Air 4 2026-04-29
KAL408 - 4 2026-07-03
KAL407 - 4 2026-07-03

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-13 KAL032 DFW → ICN Jul 13, 17:50 UTCJul 14, 07:45 UTC13h 55m
2026-07-13 KAL031 - Jul 13, 00:55 UTCJul 13, 13:30 UTC12h 35m
2026-07-12 KAL472 - Jul 12, 00:35 UTCJul 12, 11:55 UTC11h 20m
2026-07-11 KAL696 - Jul 11, 19:20 UTCJul 11, 19:40 UTC20m
2026-07-11 KAL696 - Jul 11, 13:40 UTCJul 11, 15:30 UTC1h 50m
2026-07-11 KAL695 ICN → KTM Jul 11, 06:01 UTCJul 11, 11:45 UTC5h 45m
2026-07-10 KAL498 - Jul 10, 20:25 UTCJul 10, 20:40 UTC15m
2026-07-10 KAL498 - Jul 10, 13:45 UTCJul 10, 16:30 UTC2h 45m
2026-07-10 KAL497 - Jul 10, 04:25 UTCJul 10, 10:50 UTC6h 25m
2026-07-08 KAL412 - Jul 8, 23:35 UTCJul 9, 10:50 UTC11h 15m
2026-07-08 KAL411 ICN → AKL Jul 8, 09:25 UTCJul 8, 20:15 UTC10h 50m
2026-07-08 KAL964 - Jul 8, 04:10 UTCJul 8, 04:25 UTC15m
2026-07-07 KAL964 - Jul 7, 18:40 UTCJul 8, 03:15 UTC8h 35m
2026-07-07 KAL963 - Jul 7, 04:15 UTCJul 7, 16:05 UTC11h 50m
2026-07-05 KAL914 - Jul 5, 19:00 UTCJul 6, 07:00 UTC12h 0m
2026-07-05 KAL913 - Jul 5, 01:20 UTCJul 5, 15:10 UTC13h 50m
2026-07-04 KAL468 CXR → ICN Jul 4, 11:35 UTCJul 4, 22:10 UTC10h 35m
2026-07-03 KAL408 BNE → ICN Jul 3, 23:00 UTCJul 4, 08:15 UTC9h 15m
2026-07-03 KAL407 ICN → BNE Jul 3, 11:30 UTCJul 3, 20:20 UTC8h 50m
2026-07-03 KAL2002 - Jul 3, 06:15 UTCJul 3, 09:15 UTC3h 0m
2026-07-03 KAL2001 ICN → HKG Jul 3, 02:05 UTCJul 3, 02:30 UTC25m
2026-07-02 KAL2001 ICN → HKG Jul 2, 23:25 UTCJul 3, 01:30 UTC2h 5m
2026-07-02 KAL922 - Jul 2, 10:30 UTCJul 2, 10:50 UTC20m
2026-07-01 KAL922 - Jul 1, 22:15 UTCJul 2, 09:40 UTC11h 25m
2026-07-01 KAL921 - Jul 1, 04:40 UTCJul 1, 18:55 UTC14h 15m
2026-06-30 KAL468 CXR → ICN Jun 30, 11:15 UTCJun 30, 22:05 UTC10h 50m
2026-06-29 KAL032 DFW → ICN Jun 29, 17:40 UTCJun 30, 07:20 UTC13h 40m
2026-06-29 KAL031 ICN → DFW Jun 29, 00:49 UTCJun 29, 13:00 UTC12h 10m
2026-06-28 KAL431 - Jun 28, 10:19 UTCJun 28, 22:29 UTC12h 10m
2026-06-28 KAL431 - Jun 28, 07:29 UTCJun 28, 08:05 UTC35m
2026-06-28 KAL964 - Jun 28, 04:10 UTCJun 28, 04:35 UTC25m
2026-06-27 KAL964 - Jun 27, 18:24 UTCJun 28, 03:19 UTC8h 55m
2026-06-27 KAL963 - Jun 27, 05:29 UTCJun 27, 16:10 UTC10h 40m
2026-06-27 KAL963 - Jun 27, 04:19 UTCJun 27, 04:34 UTC15m
2026-06-26 KAL498 - Jun 26, 20:04 UTCJun 26, 20:24 UTC20m
2026-06-26 KAL498 - Jun 26, 13:40 UTCJun 26, 16:00 UTC2h 20m
2026-06-26 KAL497 ICN → DEL Jun 26, 04:39 UTCJun 26, 11:24 UTC6h 45m
2026-06-25 KAL498 - Jun 25, 19:44 UTCJun 25, 20:09 UTC25m
2026-06-25 KAL498 - Jun 25, 13:35 UTCJun 25, 15:44 UTC2h 10m
2026-06-25 KAL497 - Jun 25, 04:45 UTCJun 25, 11:35 UTC6h 50m
2026-06-24 KAL076 - Jun 24, 08:14 UTCJun 24, 19:04 UTC10h 50m
2026-06-23 KAL075 ICN → YVR Jun 23, 13:59 UTCJun 23, 23:05 UTC9h 5m
2026-06-22 KAL412 - Jun 22, 23:14 UTCJun 23, 10:39 UTC11h 25m
2026-06-22 KAL411 ICN → AKL Jun 22, 09:24 UTCJun 22, 20:14 UTC10h 50m
2026-06-21 KAL480 ICN → ICN Jun 21, 11:15 UTCJun 22, 05:34 UTC18h 20m
2026-06-20 KAL408 BNE → ICN Jun 20, 23:04 UTCJun 21, 08:30 UTC9h 25m
2026-06-20 KAL407 ICN → BNE Jun 20, 11:25 UTCJun 20, 20:05 UTC8h 40m
2026-06-20 KAL874 - Jun 20, 08:25 UTCJun 20, 08:55 UTC30m
2026-06-20 KAL873 - Jun 20, 05:14 UTCJun 20, 05:34 UTC20m
2026-06-19 KAL432 DPS → ICN Jun 19, 07:25 UTCJun 19, 22:39 UTC15h 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 HL8081 page for operator, model, and routing details .

Mode-S 71C081 frequently asked

What is Mode-S code 71C081?
71C081 is an ICAO 24-bit transponder address. Allocated to Korea, South. Assigned to HL8081.
Where is Mode-S 71C081 registered?
Mode-S code 71C081 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 71C081 broadcasting right now?
No active broadcast right now. Last signal was 5h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 71C081, octal 34340201, decimal 7,454,849.
What flights does 71C081 operate?
Mode-S 71C081 has broadcast 20 distinct callsigns, including KAL032, KAL498, KAL031, KAL955, KAL497.