Apparatus

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sensors Mode-S transponder

71C565

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

Currently assigned to HL8565 · BOEING 737-800

Hex
71C565
Octal
34342545
Decimal
7,456,101
Country
KR
Tail
HL8565
Type
B738
No current signal · last broadcast 6h ago
Flights observed
383
Distinct callsigns
20
Country
KR
Last broadcast
6h ago

Last known position

Most recent position reported by Mode-S 71C565.

Country allocation

The ICAO 24-bit address 71C565 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
TWB676 - 10 2026-07-08
TWB328 - 8 2026-06-20
TWB287 Tway Airlines 8 2026-05-30
TWB225 - 8 2026-06-20
TWB013 Tway Airlines 8 2026-06-05
TWB675 - 7 2026-07-08
TWB672 Tway Airlines 7 2026-05-31
TWB643 Tway Airlines 7 2026-06-05
TWB327 - 7 2026-06-20
TWB288 Tway Airlines 7 2026-05-27
TWB226 - 7 2026-06-20
TWB671 Tway Airlines 6 2026-05-27
TWB331 - 6 2026-07-14
TWB322 - 6 2026-07-03
TWB264 Tway Airlines 6 2026-06-06
TWB243 Tway Airlines 6 2026-05-28
TWB735 - 5 2026-07-05
TWB707 - 5 2026-07-14
TWB640 Tway Airlines 5 2026-07-07
TWB332 - 5 2026-07-09

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 TWB320 KIX → PUS Jul 14, 11:00 UTCJul 14, 12:05 UTC1h 5m
2026-07-14 TWB331 - Jul 14, 08:25 UTCJul 14, 09:25 UTC1h 0m
2026-07-14 TWB717 - Jul 14, 05:40 UTCJul 14, 06:15 UTC35m
2026-07-14 TWB718 - Jul 14, 03:50 UTCJul 14, 04:30 UTC40m
2026-07-14 TWB707 - Jul 14, 01:05 UTCJul 14, 01:40 UTC35m
2026-07-13 TWB702 - Jul 13, 23:15 UTCJul 13, 23:55 UTC40m
2026-07-13 TWB801 - Jul 13, 21:25 UTCJul 13, 21:40 UTC15m
2026-07-13 TWB312 - Jul 13, 01:50 UTCJul 13, 02:25 UTC35m
2026-07-12 TWB311 - Jul 12, 23:20 UTCJul 13, 00:01 UTC40m
2026-07-12 TWB812 - Jul 12, 13:05 UTCJul 12, 13:25 UTC20m
2026-07-12 TWB811 - Jul 12, 10:50 UTCJul 12, 11:01 UTC10m
2026-07-12 TWB683 - Jul 12, 02:20 UTCJul 12, 08:01 UTC5h 40m
2026-07-11 TWB806 - Jul 11, 11:10 UTCJul 11, 11:25 UTC15m
2026-07-11 TWB725 - Jul 11, 07:00 UTCJul 11, 07:35 UTC35m
2026-07-11 TWB720 - Jul 11, 05:25 UTCJul 11, 06:01 UTC35m
2026-07-11 TWB903 - Jul 11, 03:10 UTCJul 11, 03:20 UTC10m
2026-07-11 TWB902 - Jul 11, 02:00 UTCJul 11, 02:10 UTC10m
2026-07-10 TWB901 - Jul 10, 23:50 UTCJul 11, 00:00 UTC10m
2026-07-10 TWB908 - Jul 10, 10:30 UTCJul 10, 10:40 UTC10m
2026-07-10 TWB688 - Jul 10, 07:05 UTCJul 10, 07:25 UTC20m
2026-07-10 TWB687 - Jul 10, 05:25 UTCJul 10, 06:00 UTC35m
2026-07-10 TWB807 - Jul 10, 01:20 UTCJul 10, 01:40 UTC20m
2026-07-09 TWB802 - Jul 9, 23:55 UTCJul 10, 00:15 UTC20m
2026-07-09 TWB727 - Jul 9, 08:25 UTCJul 9, 09:05 UTC40m
2026-07-09 TWB722 - Jul 9, 06:25 UTCJul 9, 07:10 UTC45m
2026-07-09 TWB332 - Jul 9, 03:15 UTCJul 9, 04:10 UTC55m
2026-07-09 TWB319 PUS → KIX Jul 9, 00:45 UTCJul 9, 01:55 UTC1h 10m
2026-07-08 TWB676 KHH → PUS Jul 8, 09:55 UTCJul 8, 12:05 UTC2h 10m
2026-07-08 TWB675 PUS → KHH Jul 8, 06:20 UTCJul 8, 08:40 UTC2h 20m
2026-07-08 TWB270 - Jul 8, 02:45 UTCJul 8, 04:50 UTC2h 5m
2026-07-07 TWB269 - Jul 7, 23:20 UTCJul 8, 01:25 UTC2h 5m
2026-07-07 TWB640 HKG → PUS Jul 7, 20:40 UTCJul 7, 21:10 UTC30m
2026-07-07 TWB640 HKG → PUS Jul 7, 18:00 UTCJul 7, 19:35 UTC1h 35m
2026-07-07 TWB639 PUS → HKG Jul 7, 12:50 UTCJul 7, 15:55 UTC3h 5m
2026-07-07 TWB927 GMP → PUS Jul 7, 10:10 UTCJul 7, 10:55 UTC45m
2026-07-07 TWB926 PUS → GMP Jul 7, 08:00 UTCJul 7, 08:40 UTC40m
2026-07-07 TWB925 GMP → PUS Jul 7, 06:10 UTCJul 7, 07:00 UTC50m
2026-07-07 TWB710 - Jul 7, 01:55 UTCJul 7, 02:35 UTC40m
2026-07-07 TWB805 - Jul 7, 00:00 UTCJul 7, 00:15 UTC15m
2026-07-06 TWB808 - Jul 6, 09:50 UTCJul 6, 10:10 UTC20m
2026-07-06 TWB907 - Jul 6, 07:40 UTCJul 6, 07:50 UTC10m
2026-07-06 TWB906 - Jul 6, 06:30 UTCJul 6, 06:45 UTC15m
2026-07-06 TWB715 - Jul 6, 04:20 UTCJul 6, 04:55 UTC35m
2026-07-06 TWB706 - Jul 6, 00:15 UTCJul 6, 00:55 UTC40m
2026-07-05 TWB703 GMP → CJU Jul 5, 22:10 UTCJul 5, 22:45 UTC35m
2026-07-05 TWB736 - Jul 5, 13:00 UTCJul 5, 13:40 UTC40m
2026-07-05 TWB735 - Jul 5, 10:45 UTCJul 5, 11:20 UTC35m
2026-07-05 TWB728 - Jul 5, 08:50 UTCJul 5, 09:30 UTC40m
2026-07-05 TWB905 - Jul 5, 06:35 UTCJul 5, 06:50 UTC15m
2026-07-05 TWB904 - Jul 5, 05:25 UTCJul 5, 05:40 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 HL8565 page for operator, model, and routing details .

Mode-S 71C565 frequently asked

What is Mode-S code 71C565?
71C565 is an ICAO 24-bit transponder address. Allocated to Korea, South. Assigned to HL8565.
Where is Mode-S 71C565 registered?
Mode-S code 71C565 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 71C565 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 71C565, octal 34342545, decimal 7,456,101.
What flights does 71C565 operate?
Mode-S 71C565 has broadcast 20 distinct callsigns, including TWB676, TWB328, TWB287, TWB225, TWB013.