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 Jul 26, 20:25 UTC
Flights observed
449
Distinct callsigns
20
Country
KR
Last broadcast
Jul 26, 20:25 UTC

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 - 14 2026-07-18
TWB287 Tway Airlines 10 2026-07-21
TWB675 - 9 2026-07-18
TWB288 Tway Airlines 9 2026-07-22
TWB013 - 9 2026-07-22
TWB672 Tway Airlines 8 2026-07-22
TWB328 - 8 2026-06-20
TWB225 - 8 2026-06-20
TWB643 Tway Airlines 7 2026-06-05
TWB640 - 7 2026-07-16
TWB331 - 7 2026-07-16
TWB327 - 7 2026-06-20
TWB226 - 7 2026-06-20
TWB671 Tway Airlines 6 2026-05-27
TWB639 - 6 2026-07-16
TWB332 Tway Airlines 6 2026-07-19
TWB322 - 6 2026-07-03
TWB320 - 6 2026-07-16
TWB264 Tway Airlines 6 2026-06-06
TWB243 Tway Airlines 6 2026-05-28

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 TWB037 TAE → CXR Jul 26, 12:00 UTCJul 26, 20:25 UTC8h 25m
2026-07-26 TWB684 YNJ → TAE Jul 26, 02:30 UTCJul 26, 07:55 UTC5h 26m
2026-07-25 TWB106 BKK → TAE Jul 25, 20:10 UTCJul 26, 00:55 UTC4h 45m
2026-07-25 TWB105 TAE → BKK Jul 25, 12:50 UTCJul 25, 17:40 UTC4h 50m
2026-07-25 TWB216 NRT → ICN Jul 25, 10:45 UTCJul 25, 11:10 UTC25m
2026-07-25 TWB215 TAE → FUK Jul 25, 08:25 UTCJul 25, 09:00 UTC35m
2026-07-25 TWB252 NRT → TAE Jul 25, 05:05 UTCJul 25, 06:05 UTC1h 0m
2026-07-25 YWB251 - Jul 25, 01:45 UTCJul 25, 03:40 UTC1h 55m
2026-07-24 TWB106 BKK → TAE Jul 24, 19:25 UTCJul 25, 00:20 UTC4h 55m
2026-07-24 TWB105 TAE → BKK Jul 24, 12:50 UTCJul 24, 17:50 UTC5h 0m
2026-07-24 TWB216 NRT → ICN Jul 24, 10:45 UTCJul 24, 11:15 UTC30m
2026-07-24 TWB215 TAE → FUK Jul 24, 08:25 UTCJul 24, 08:45 UTC20m
2026-07-24 TWB252 NRT → TAE Jul 24, 05:20 UTCJul 24, 06:30 UTC1h 10m
2026-07-24 TWB251 TAE → NRT Jul 24, 02:20 UTCJul 24, 03:40 UTC1h 20m
2026-07-24 TWB106 BKK → TAE Jul 24, 00:20 UTCJul 24, 00:40 UTC20m
2026-07-23 TWB106 BKK → TAE Jul 23, 19:50 UTCJul 23, 23:05 UTC3h 15m
2026-07-23 TWB105 TAE → BKK Jul 23, 12:55 UTCJul 23, 17:55 UTC5h 0m
2026-07-23 TWB216 NRT → ICN Jul 23, 10:40 UTCJul 23, 11:05 UTC25m
2026-07-23 TWB215 TAE → FUK Jul 23, 08:25 UTCJul 23, 09:00 UTC35m
2026-07-23 TWB252 NRT → TAE Jul 23, 05:00 UTCJul 23, 06:05 UTC1h 5m
2026-07-23 TWB251 TAE → NRT Jul 23, 01:50 UTCJul 23, 03:30 UTC1h 40m
2026-07-22 TWB030 DAD → TAE Jul 22, 23:15 UTCJul 22, 23:35 UTC20m
2026-07-22 TWB013 - Jul 22, 13:55 UTCJul 22, 22:10 UTC8h 15m
2026-07-22 TWB672 KHH → ICN Jul 22, 10:20 UTCJul 22, 12:30 UTC2h 10m
2026-07-22 TWB288 KMJ → ICN Jul 22, 01:55 UTCJul 22, 03:00 UTC1h 5m
2026-07-21 TWB287 ICN → KMJ Jul 21, 23:20 UTCJul 22, 00:15 UTC55m
2026-07-21 TWB616 - Jul 21, 19:15 UTCJul 21, 19:45 UTC30m
2026-07-21 TWB615 ICN → WUH Jul 21, 13:20 UTCJul 21, 13:50 UTC30m
2026-07-21 TWB9617 ICN → ICN Jul 21, 05:05 UTCJul 21, 10:20 UTC5h 15m
2026-07-21 TWB288 KMJ → ICN Jul 21, 01:45 UTCJul 21, 02:50 UTC1h 5m
2026-07-20 TWB287 ICN → KMJ Jul 20, 23:15 UTCJul 21, 00:15 UTC59m
2026-07-20 TWB208 - Jul 20, 11:50 UTCJul 20, 12:55 UTC1h 5m
2026-07-20 TWB207 ICN → FUK Jul 20, 09:20 UTCJul 20, 10:20 UTC1h 0m
2026-07-20 TWB202 NRT → TAE Jul 20, 04:00 UTCJul 20, 04:50 UTC50m
2026-07-20 TWB201 - Jul 20, 01:30 UTCJul 20, 02:20 UTC50m
2026-07-19 TWB014 - Jul 19, 12:50 UTCJul 19, 23:45 UTC10h 55m
2026-07-19 TWB808 - Jul 19, 09:45 UTCJul 19, 10:10 UTC25m
2026-07-19 TWB907 - Jul 19, 07:50 UTCJul 19, 08:00 UTC10m
2026-07-19 TWB906 - Jul 19, 06:45 UTCJul 19, 07:00 UTC15m
2026-07-19 TWB332 KIX → CJU Jul 19, 03:20 UTCJul 19, 04:15 UTC55m
2026-07-19 TWB319 PUS → KIX Jul 19, 00:25 UTCJul 19, 01:30 UTC1h 5m
2026-07-18 TWB676 - Jul 18, 11:45 UTCJul 18, 12:05 UTC20m
2026-07-18 TWB676 - Jul 18, 09:50 UTCJul 18, 10:30 UTC40m
2026-07-18 TWB675 PUS → KHH Jul 18, 06:05 UTCJul 18, 08:20 UTC2h 15m
2026-07-17 TWB676 - Jul 17, 11:50 UTCJul 17, 12:35 UTC45m
2026-07-17 TWB676 - Jul 17, 09:50 UTCJul 17, 10:40 UTC50m
2026-07-17 TWB675 PUS → KHH Jul 17, 06:25 UTCJul 17, 08:49 UTC2h 25m
2026-07-17 TWB270 - Jul 17, 02:34 UTCJul 17, 04:44 UTC2h 10m
2026-07-16 TWB269 - Jul 16, 23:15 UTCJul 17, 01:20 UTC2h 5m
2026-07-16 TWB640 - Jul 16, 20:45 UTCJul 16, 21:25 UTC40m

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 Jul 26, 20:25 UTC.
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, TWB287, TWB675, TWB288, TWB013.