Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

71C576

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

Currently assigned to HL8576 · BOEING 787-10 Dreamliner

Hex
71C576
Octal
34342566
Decimal
7,456,118
Country
KR
Tail
HL8576
Type
B78X
No current signal · last broadcast 6h ago
Flights observed
223
Distinct callsigns
20
Country
KR
Last broadcast
6h ago

Last known position

Most recent position reported by Mode-S 71C576.

Country allocation

The ICAO 24-bit address 71C576 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
KAL071 - 13 2026-07-13
KAL072 - 12 2026-07-13
KAL928 - 10 2026-07-13
KAL024 - 10 2026-07-03
KAL023 - 10 2026-07-03
KAL927 - 9 2026-07-12
KAL437 - 8 2026-06-28
KAL402 - 8 2026-06-25
KAL401 - 8 2026-06-25
KAL647 Korean Air 7 2026-05-31
KAL2021 Korean Air 7 2026-05-30
KAL053 - 7 2026-06-24
KAL648 Korean Air 6 2026-06-01
KAL2022 Korean Air 6 2026-05-30
KAL076 - 6 2026-07-11
KAL054 - 6 2026-06-24
KAL041 - 6 2026-07-08
KAL881 - 5 2026-06-17
KAL724 - 5 2026-07-08
KAL075 - 5 2026-07-10

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-13 KAL072 - Jul 13, 22:10 UTCJul 13, 22:35 UTC25m
2026-07-13 KAL071 ICN → YVR Jul 13, 10:10 UTCJul 13, 19:45 UTC9h 35m
2026-07-13 KAL928 - Jul 13, 06:30 UTCJul 13, 06:50 UTC20m
2026-07-12 KAL928 - Jul 12, 20:30 UTCJul 13, 05:45 UTC9h 15m
2026-07-12 KAL927 - Jul 12, 06:05 UTCJul 12, 17:35 UTC11h 30m
2026-07-12 KAL927 - Jul 12, 04:55 UTCJul 12, 05:15 UTC20m
2026-07-11 KAL076 YVR → ICN Jul 11, 08:25 UTCJul 11, 18:30 UTC10h 5m
2026-07-10 KAL075 - Jul 10, 14:10 UTCJul 11, 00:20 UTC10h 10m
2026-07-09 KAL072 YVR → ICN Jul 9, 22:05 UTCJul 10, 08:35 UTC10h 30m
2026-07-09 KAL071 ICN → YVR Jul 9, 10:10 UTCJul 9, 19:30 UTC9h 20m
2026-07-08 KAL042 SEA → ICN Jul 8, 20:45 UTCJul 9, 07:20 UTC10h 35m
2026-07-08 KAL041 ICN → SEA Jul 8, 08:00 UTCJul 8, 17:30 UTC9h 30m
2026-07-08 KAL724 KIX → ICN Jul 8, 04:00 UTCJul 8, 05:20 UTC1h 20m
2026-07-08 KAL723 - Jul 8, 01:05 UTCJul 8, 02:25 UTC1h 20m
2026-07-06 KAL072 - Jul 6, 22:15 UTCJul 7, 08:25 UTC10h 10m
2026-07-06 KAL071 ICN → YVR Jul 6, 10:15 UTCJul 6, 19:35 UTC9h 20m
2026-07-06 KAL928 - Jul 6, 06:50 UTCJul 6, 07:15 UTC25m
2026-07-05 KAL928 - Jul 5, 20:25 UTCJul 6, 06:05 UTC9h 40m
2026-07-05 KAL927 - Jul 5, 06:45 UTCJul 5, 18:05 UTC11h 20m
2026-07-05 KAL927 - Jul 5, 05:35 UTCJul 5, 05:50 UTC15m
2026-07-04 KAL448 - Jul 4, 19:30 UTCJul 4, 20:10 UTC40m
2026-07-04 KAL448 - Jul 4, 16:35 UTCJul 4, 16:50 UTC15m
2026-07-04 KAL447 - Jul 4, 14:05 UTCJul 4, 14:40 UTC35m
2026-07-04 KAL447 - Jul 4, 10:45 UTCJul 4, 10:55 UTC10m
2026-07-03 KAL024 - Jul 3, 20:30 UTCJul 4, 08:10 UTC11h 40m
2026-07-03 KAL023 - Jul 3, 07:20 UTCJul 3, 17:30 UTC10h 10m
2026-07-02 KAL678 - Jul 2, 22:25 UTCJul 2, 22:45 UTC20m
2026-07-02 KAL677 - Jul 2, 10:00 UTCJul 2, 19:40 UTC9h 40m
2026-07-02 KAL970 - Jul 2, 03:45 UTCJul 2, 04:05 UTC20m
2026-07-01 KAL970 - Jul 1, 17:35 UTCJul 1, 20:55 UTC3h 20m
2026-07-01 KAL969 - Jul 1, 02:40 UTCJul 1, 14:40 UTC12h 0m
2026-06-30 KAL434 ICN → ICN Jun 30, 09:15 UTCJun 30, 23:55 UTC14h 40m
2026-06-30 KAL928 - Jun 30, 06:50 UTCJun 30, 07:15 UTC25m
2026-06-29 KAL928 MXP → TSN Jun 29, 20:30 UTCJun 30, 06:05 UTC9h 36m
2026-06-29 KAL927 - Jun 29, 06:19 UTCJun 29, 17:34 UTC11h 15m
2026-06-29 KAL927 - Jun 29, 05:09 UTCJun 29, 05:24 UTC15m
2026-06-28 KAL438 - Jun 28, 21:04 UTCJun 29, 02:05 UTC5h 0m
2026-06-28 KAL437 - Jun 28, 17:04 UTCJun 28, 17:25 UTC20m
2026-06-28 KAL437 - Jun 28, 11:04 UTCJun 28, 15:44 UTC4h 40m
2026-06-28 KAL888 - Jun 28, 02:34 UTCJun 28, 07:29 UTC4h 55m
2026-06-27 KAL434 ICN → ICN Jun 27, 09:34 UTCJun 27, 23:55 UTC14h 20m
2026-06-26 KAL438 - Jun 26, 20:55 UTCJun 27, 01:44 UTC4h 50m
2026-06-26 KAL437 - Jun 26, 17:00 UTCJun 26, 17:15 UTC15m
2026-06-26 KAL437 - Jun 26, 11:05 UTCJun 26, 15:39 UTC4h 35m
2026-06-25 KAL402 SYD → ICN Jun 25, 22:39 UTCJun 26, 09:00 UTC10h 20m
2026-06-25 KAL401 ICN → SYD Jun 25, 11:15 UTCJun 25, 20:45 UTC9h 30m
2026-06-24 KAL054 - Jun 24, 23:34 UTCJun 25, 08:50 UTC9h 15m
2026-06-24 KAL053 - Jun 24, 12:25 UTCJun 24, 14:04 UTC1h 40m
2026-06-23 KAL438 - Jun 23, 20:59 UTCJun 24, 02:05 UTC5h 5m
2026-06-23 KAL437 - Jun 23, 17:20 UTCJun 23, 17:34 UTC15m

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 HL8576 page for operator, model, and routing details .

Mode-S 71C576 frequently asked

What is Mode-S code 71C576?
71C576 is an ICAO 24-bit transponder address. Allocated to Korea, South. Assigned to HL8576.
Where is Mode-S 71C576 registered?
Mode-S code 71C576 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 71C576 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 71C576, octal 34342566, decimal 7,456,118.
What flights does 71C576 operate?
Mode-S 71C576 has broadcast 20 distinct callsigns, including KAL071, KAL072, KAL928, KAL024, KAL023.