Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

71C575

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

Currently assigned to HL8575 · BOEING 787-10 Dreamliner

Hex
71C575
Octal
34342565
Decimal
7,456,117
Country
KR
Tail
HL8575
Type
B78X
No current signal · last broadcast 54m ago
Flights observed
217
Distinct callsigns
20
Country
KR
Last broadcast
54m ago

Last known position

Most recent position reported by Mode-S 71C575.

Country allocation

The ICAO 24-bit address 71C575 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
KAL053 - 20 2026-07-08
KAL042 - 15 2026-07-12
KAL054 - 14 2026-07-08
KAL076 - 10 2026-07-10
KAL041 - 10 2026-07-12
KAL917 - 9 2026-07-14
KAL075 - 9 2026-07-09
KAL918 Korean Air 8 2026-07-03
KAL072 - 8 2026-07-07
KAL071 - 8 2026-07-07
KAL023 - 8 2026-06-28
KAL024 - 7 2026-06-28
KAL448 - 6 2026-06-12
KAL402 - 6 2026-06-29
KAL401 - 6 2026-06-29
KAL970 - 5 2026-06-23
KAL433 - 5 2026-06-24
KAL969 - 4 2026-06-22
KAL724 - 4 2026-07-12
KAL723 - 4 2026-07-12

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 KAL917 - Jul 14, 03:50 UTCJul 14, 15:15 UTC11h 25m
2026-07-14 KAL917 - Jul 14, 02:30 UTCJul 14, 02:50 UTC20m
2026-07-13 KAL434 ICN → ICN Jul 13, 09:40 UTCJul 14, 00:10 UTC14h 30m
2026-07-12 KAL042 SEA → ICN Jul 12, 20:35 UTCJul 13, 07:20 UTC10h 45m
2026-07-12 KAL041 ICN → SEA Jul 12, 08:15 UTCJul 12, 17:50 UTC9h 35m
2026-07-12 KAL724 - Jul 12, 04:10 UTCJul 12, 05:35 UTC1h 25m
2026-07-12 KAL723 - Jul 12, 01:10 UTCJul 12, 02:30 UTC1h 20m
2026-07-11 KAL472 - Jul 11, 01:30 UTCJul 11, 12:50 UTC11h 20m
2026-07-10 KAL076 YVR → ICN Jul 10, 08:10 UTCJul 10, 18:25 UTC10h 15m
2026-07-09 KAL075 ICN → YVR Jul 9, 14:25 UTCJul 9, 23:40 UTC9h 15m
2026-07-08 KAL054 - Jul 8, 23:25 UTCJul 9, 08:25 UTC9h 0m
2026-07-08 KAL053 - Jul 8, 20:05 UTCJul 8, 20:25 UTC20m
2026-07-08 KAL053 - Jul 8, 12:20 UTCJul 8, 14:15 UTC1h 55m
2026-07-07 KAL072 - Jul 7, 22:20 UTCJul 8, 08:40 UTC10h 20m
2026-07-07 KAL071 ICN → YVR Jul 7, 10:35 UTCJul 7, 20:00 UTC9h 25m
2026-07-07 KAL704 - Jul 7, 05:15 UTCJul 7, 07:10 UTC1h 55m
2026-07-07 KAL703 - Jul 7, 01:45 UTCJul 7, 03:45 UTC2h 0m
2026-07-06 KAL076 - Jul 6, 08:15 UTCJul 6, 19:15 UTC11h 0m
2026-07-05 KAL075 - Jul 5, 14:05 UTCJul 5, 23:10 UTC9h 5m
2026-07-04 KAL434 ICN → ICN Jul 4, 09:20 UTCJul 5, 00:00 UTC14h 40m
2026-07-04 KAL882 - Jul 4, 04:30 UTCJul 4, 05:15 UTC45m
2026-07-03 KAL881 - Jul 3, 23:45 UTCJul 4, 00:25 UTC40m
2026-07-03 KAL918 ZRH → ICN Jul 3, 04:40 UTCJul 3, 05:05 UTC25m
2026-07-02 KAL918 ZRH → ICN Jul 2, 18:10 UTCJul 3, 03:50 UTC9h 40m
2026-07-02 KAL917 - Jul 2, 10:55 UTCJul 2, 15:05 UTC4h 10m
2026-07-02 KAL917 - Jul 2, 02:40 UTCJul 2, 03:00 UTC20m
2026-07-01 KAL434 ICN → ICN Jul 1, 09:25 UTCJul 1, 23:45 UTC14h 20m
2026-06-30 KAL882 - Jun 30, 23:50 UTCJul 1, 05:10 UTC5h 20m
2026-06-29 KAL402 SYD → ICN Jun 29, 22:39 UTCJun 30, 08:35 UTC9h 56m
2026-06-29 KAL401 ICN → SYD Jun 29, 10:34 UTCJun 29, 20:15 UTC9h 40m
2026-06-28 KAL024 SFO → ICN Jun 28, 20:14 UTCJun 29, 08:14 UTC12h 0m
2026-06-28 KAL023 - Jun 28, 07:50 UTCJun 28, 17:39 UTC9h 50m
2026-06-28 KAL724 KIX → ICN Jun 28, 04:20 UTCJun 28, 05:40 UTC1h 20m
2026-06-28 KAL723 ICN → KIX Jun 28, 01:15 UTCJun 28, 02:29 UTC1h 15m
2026-06-26 KAL024 - Jun 26, 20:10 UTCJun 27, 08:05 UTC11h 55m
2026-06-26 KAL023 ICN → SFO Jun 26, 07:20 UTCJun 26, 17:09 UTC9h 50m
2026-06-26 KAL918 ZRH → ICN Jun 26, 04:14 UTCJun 26, 04:39 UTC25m
2026-06-25 KAL918 ZRH → ICN Jun 25, 18:00 UTCJun 26, 03:24 UTC9h 25m
2026-06-25 KAL917 - Jun 25, 04:14 UTCJun 25, 15:40 UTC11h 25m
2026-06-25 KAL917 - Jun 25, 02:54 UTCJun 25, 03:10 UTC15m
2026-06-24 KAL433 - Jun 24, 09:34 UTCJun 24, 23:54 UTC14h 20m
2026-06-23 KAL042 BFI → ICN Jun 23, 20:40 UTCJun 24, 07:20 UTC10h 40m
2026-06-23 KAL041 ICN → SEA Jun 23, 08:20 UTCJun 23, 17:44 UTC9h 25m
2026-06-23 KAL970 - Jun 23, 03:15 UTCJun 23, 03:39 UTC25m
2026-06-22 KAL970 - Jun 22, 17:25 UTCJun 23, 02:29 UTC9h 5m
2026-06-22 KAL969 - Jun 22, 03:50 UTCJun 22, 15:10 UTC11h 20m
2026-06-22 KAL969 - Jun 22, 02:34 UTCJun 22, 02:50 UTC15m
2026-06-21 KAL433 ICN → ICN Jun 21, 09:24 UTCJun 21, 23:55 UTC14h 30m
2026-06-20 KAL076 - Jun 20, 08:19 UTCJun 20, 18:29 UTC10h 10m
2026-06-19 KAL075 - Jun 19, 14:09 UTCJun 19, 23:44 UTC9h 35m

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 HL8575 page for operator, model, and routing details .

Mode-S 71C575 frequently asked

What is Mode-S code 71C575?
71C575 is an ICAO 24-bit transponder address. Allocated to Korea, South. Assigned to HL8575.
Where is Mode-S 71C575 registered?
Mode-S code 71C575 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 71C575 broadcasting right now?
No active broadcast right now. Last signal was 54m ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 71C575, octal 34342565, decimal 7,456,117.
What flights does 71C575 operate?
Mode-S 71C575 has broadcast 20 distinct callsigns, including KAL053, KAL042, KAL054, KAL076, KAL041.