Apparatus

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sensors Mode-S transponder

71C324

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

Currently assigned to HL8324 · BOEING 737-800

Hex
71C324
Octal
34341444
Decimal
7,455,524
Country
KR
Tail
HL8324
Type
B738
No current signal · last broadcast 2h ago
Flights observed
119
Distinct callsigns
20
Country
KR
Last broadcast
2h ago

Last known position

Most recent position reported by Mode-S 71C324.

Country allocation

The ICAO 24-bit address 71C324 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
TWB038 Tway Airlines 6 2026-05-21
TWB314 Tway Airlines 5 2026-05-27
TWB305 Tway Airlines 5 2026-05-27
TWB251 Tway Airlines 5 2026-05-17
TWB037 Tway Airlines 5 2026-05-14
TWB651 Tway Airlines 4 2026-04-20
TWB252 Tway Airlines 4 2026-05-17
TWB725 - 3 2026-04-25
TWB681 Tway Airlines 3 2026-05-13
TWB652 Tway Airlines 3 2026-04-20
TWB313 Tway Airlines 3 2026-05-25
TWB306 Tway Airlines 3 2026-05-25
TWB243 Tway Airlines 3 2026-05-03
TWB241 Tway Airlines 3 2026-05-04
TWB812 - 2 2026-04-25
TWB806 Tway Airlines 2 2026-04-25
TWB720 Tway Airlines 2 2026-04-25
TWB688 Tway Airlines 2 2026-05-02
TWB687 Tway Airlines 2 2026-05-02
TWB683 Tway Airlines 2 2026-05-30

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-30 TWB683 TAE → YNJ May 30, 02:20 UTCMay 30, 08:05 UTC5h 45m
2026-05-28 TWB312 KIX → TAE May 28, 02:00 UTCMay 28, 02:35 UTC35m
2026-05-27 TWB311 TAE → KIX May 27, 23:05 UTCMay 28, 00:05 UTC1h 0m
2026-05-27 TWB314 KIX → TAE May 27, 10:35 UTCMay 27, 11:10 UTC35m
2026-05-27 TWB305 ICN → KIX May 27, 07:15 UTCMay 27, 08:35 UTC1h 20m
2026-05-27 TWB286 HSG → ICN May 27, 01:54 UTCMay 27, 02:54 UTC1h 0m
2026-05-26 TWB672 KHH → ICN May 26, 08:39 UTCMay 26, 11:15 UTC2h 35m
2026-05-26 TWB671 ICN → KHH May 26, 04:30 UTCMay 26, 06:59 UTC2h 30m
2026-05-25 TWB306 KIX → ICN May 25, 10:50 UTCMay 25, 12:10 UTC1h 20m
2026-05-25 TWB313 TAE → KIX May 25, 08:05 UTCMay 25, 09:30 UTC1h 25m
2026-05-24 TWB680 KHH → ICN May 24, 12:45 UTCMay 24, 13:00 UTC15m
2026-05-23 TWB683 TAE → YNJ May 23, 02:15 UTCMay 23, 08:10 UTC5h 54m
2026-05-22 TWB214 FUK → TAE May 22, 06:25 UTCMay 22, 06:40 UTC15m
2026-05-21 TWB213 TAE → FUK May 21, 23:25 UTCMay 22, 00:00 UTC35m
2026-05-21 TWB038 CXR → TAE May 21, 21:25 UTCMay 21, 21:40 UTC15m
2026-05-21 TWB038 CXR → TAE May 21, 12:35 UTCMay 21, 20:00 UTC7h 25m
2026-05-21 TWB684 YNJ → TAE May 21, 02:15 UTCMay 21, 08:20 UTC6h 5m
2026-05-20 TWB314 KIX → TAE May 20, 10:40 UTCMay 20, 11:10 UTC30m
2026-05-20 TWB305 ICN → KIX May 20, 07:10 UTCMay 20, 08:35 UTC1h 25m
2026-05-19 TWB306 KIX → ICN May 19, 10:45 UTCMay 19, 12:05 UTC1h 20m
2026-05-19 TWB313 TAE → KIX May 19, 07:55 UTCMay 19, 09:00 UTC1h 5m
2026-05-18 TWB312 KIX → TAE May 18, 02:00 UTCMay 18, 02:30 UTC30m
2026-05-17 TWB311 TAE → KIX May 17, 23:25 UTCMay 18, 00:05 UTC40m
2026-05-17 TWB252 NRT → TAE May 17, 05:00 UTCMay 17, 05:55 UTC55m
2026-05-17 TWB251 TAE → NRT May 17, 01:45 UTCMay 17, 03:30 UTC1h 45m
2026-05-15 TWB682 DYG → TAE May 15, 09:00 UTCMay 15, 09:10 UTC10m
2026-05-14 TWB038 CXR → TAE May 14, 21:15 UTCMay 14, 21:30 UTC15m
2026-05-14 TWB037 TAE → CXR May 14, 12:25 UTCMay 14, 19:45 UTC7h 20m
2026-05-14 TWB252 NRT → TAE May 14, 04:55 UTCMay 14, 06:35 UTC1h 40m
2026-05-14 TWB251 TAE → NRT May 14, 02:05 UTCMay 14, 03:30 UTC1h 25m
2026-05-13 TWB681 TAE → DYG May 13, 02:15 UTCMay 13, 02:35 UTC20m
2026-05-12 TWB314 KIX → TAE May 12, 10:40 UTCMay 12, 11:15 UTC35m
2026-05-12 TWB305 ICN → KIX May 12, 07:10 UTCMay 12, 08:40 UTC1h 30m
2026-05-11 TWB264 CTS → ICN May 11, 05:45 UTCMay 11, 08:20 UTC2h 35m
2026-05-11 TWB263 ICN → CTS May 11, 01:34 UTCMay 11, 03:55 UTC2h 20m
2026-05-10 TWB014 DAD → ICN May 10, 12:30 UTCMay 10, 22:35 UTC10h 5m
2026-05-10 TWB682 DYG → TAE May 10, 08:30 UTCMay 10, 08:54 UTC25m
2026-05-10 TWB681 TAE → DYG May 10, 02:04 UTCMay 10, 02:24 UTC20m
2026-05-09 TWB038 CXR → TAE May 9, 12:30 UTCMay 9, 21:40 UTC9h 10m
2026-05-09 TWB037 TAE → CXR May 9, 10:55 UTCMay 9, 11:10 UTC15m
2026-05-08 TWB681 TAE → DYG May 8, 02:14 UTCMay 8, 09:14 UTC7h 0m
2026-05-07 TWB215 TAE → FUK May 7, 08:15 UTCMay 7, 08:25 UTC10m
2026-05-07 TWB252 NRT → TAE May 7, 05:15 UTCMay 7, 06:15 UTC1h 0m
2026-05-07 TWB251 TAE → NRT May 7, 01:45 UTCMay 7, 03:20 UTC1h 35m
2026-05-04 TWB664 TPE → TAE May 4, 18:15 UTCMay 4, 18:35 UTC21m
2026-05-04 TWB663 TAE → TPE May 4, 14:00 UTCMay 4, 16:15 UTC2h 15m
2026-05-04 TWB314 KIX → TAE May 4, 10:55 UTCMay 4, 11:20 UTC25m
2026-05-04 TWB305 ICN → KIX May 4, 07:25 UTCMay 4, 08:30 UTC1h 5m
2026-05-04 TWB242 NRT → ICN May 4, 03:49 UTCMay 4, 06:10 UTC2h 20m
2026-05-04 TWB241 ICN → NRT May 4, 01:50 UTCMay 4, 02:35 UTC45m

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 HL8324 page for operator, model, and routing details .

Mode-S 71C324 frequently asked

What is Mode-S code 71C324?
71C324 is an ICAO 24-bit transponder address. Allocated to Korea, South. Assigned to HL8324.
Where is Mode-S 71C324 registered?
Mode-S code 71C324 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 71C324 broadcasting right now?
No active broadcast right now. Last signal was 2h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 71C324, octal 34341444, decimal 7,455,524.
What flights does 71C324 operate?
Mode-S 71C324 has broadcast 20 distinct callsigns, including TWB038, TWB314, TWB305, TWB251, TWB037.