Apparatus

Try JFK, AAL1290, BAW, or N225AN.

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 Jul 26, 23:00 UTC
Flights observed
269
Distinct callsigns
20
Country
KR
Last broadcast
Jul 26, 23:00 UTC

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
TWB643 Tway Airlines 17 2026-07-23
TWB252 Tway Airlines 11 2026-07-26
TWB251 Tway Airlines 11 2026-07-26
TWB644 Tway Airlines 10 2026-07-23
TWB669 Tway Airlines 8 2026-07-25
TWB314 - 7 2026-06-30
TWB306 Tway Airlines 7 2026-07-22
TWB305 - 7 2026-06-30
TWB670 Tway Airlines 6 2026-07-25
TWB313 - 6 2026-07-07
TWB312 - 6 2026-07-07
TWB311 Tway Airlines 6 2026-07-06
TWB038 Tway Airlines 6 2026-05-21
TWB034 - 6 2026-07-15
TWB683 - 5 2026-07-05
TWB215 Tway Airlines 5 2026-07-26
TWB037 Tway Airlines 5 2026-05-14
TWB672 Tway Airlines 4 2026-07-19
TWB671 Tway Airlines 4 2026-07-19
TWB651 Tway Airlines 4 2026-04-20

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 TWB106 BKK → TAE Jul 26, 19:40 UTCJul 26, 23:00 UTC3h 20m
2026-07-26 TWB105 TAE → BKK Jul 26, 13:00 UTCJul 26, 17:50 UTC4h 50m
2026-07-26 TWB216 NRT → ICN Jul 26, 10:45 UTCJul 26, 11:25 UTC40m
2026-07-26 TWB215 TAE → FUK Jul 26, 08:20 UTCJul 26, 09:00 UTC40m
2026-07-26 TWB252 NRT → TAE Jul 26, 05:15 UTCJul 26, 06:15 UTC1h 0m
2026-07-26 TWB251 TAE → NRT Jul 26, 01:50 UTCJul 26, 03:30 UTC1h 40m
2026-07-25 TWB030 DAD → TAE Jul 25, 13:05 UTCJul 25, 22:50 UTC9h 45m
2026-07-25 TWB670 RMQ → ICN Jul 25, 09:10 UTCJul 25, 11:25 UTC2h 15m
2026-07-25 TWB669 ICN → RMQ Jul 25, 07:05 UTCJul 25, 07:45 UTC40m
2026-07-25 TWB669 ICN → RMQ Jul 25, 05:25 UTCJul 25, 06:05 UTC40m
2026-07-24 TWB608 TAO → ICN Jul 24, 14:40 UTCJul 24, 15:05 UTC25m
2026-07-24 TWB607 ICN → TAO Jul 24, 11:45 UTCJul 24, 12:15 UTC30m
2026-07-24 TWB606 TNA → ICN Jul 24, 09:35 UTCJul 24, 10:05 UTC30m
2026-07-24 TWB605 ICN → TNA Jul 24, 05:50 UTCJul 24, 06:10 UTC20m
2026-07-24 TWB286 HSG → ICN Jul 24, 01:40 UTCJul 24, 02:40 UTC1h 0m
2026-07-23 TWB285 ICN → HSG Jul 23, 23:25 UTCJul 24, 00:25 UTC1h 0m
2026-07-23 TWB248 NRT → ICN Jul 23, 13:25 UTCJul 23, 15:15 UTC1h 50m
2026-07-23 TWB247 ICN → NRT Jul 23, 10:00 UTCJul 23, 11:55 UTC1h 55m
2026-07-23 TWB644 HKG → ICN Jul 23, 05:20 UTCJul 23, 08:40 UTC3h 20m
2026-07-23 TWB643 ICN → HKG Jul 23, 00:05 UTCJul 23, 03:10 UTC3h 5m
2026-07-22 TWB306 KIX → ICN Jul 22, 11:25 UTCJul 22, 12:20 UTC55m
2026-07-21 TWB106 - Jul 21, 19:55 UTCJul 22, 00:50 UTC4h 55m
2026-07-21 TWB105 - Jul 21, 12:40 UTCJul 21, 17:35 UTC4h 55m
2026-07-21 TWB216 NRT → ICN Jul 21, 10:30 UTCJul 21, 11:10 UTC40m
2026-07-21 TWB215 TAE → FUK Jul 21, 08:25 UTCJul 21, 09:00 UTC35m
2026-07-21 TWB252 NRT → TAE Jul 21, 05:10 UTCJul 21, 06:20 UTC1h 10m
2026-07-21 TWB251 TAE → NRT Jul 21, 02:05 UTCJul 21, 03:15 UTC1h 10m
2026-07-21 TWB106 - Jul 21, 00:00 UTCJul 21, 00:30 UTC30m
2026-07-20 TWB106 - Jul 20, 19:30 UTCJul 20, 22:45 UTC3h 15m
2026-07-20 TWB105 - Jul 20, 12:35 UTCJul 20, 17:35 UTC5h 0m
2026-07-20 TWB216 NRT → ICN Jul 20, 10:30 UTCJul 20, 11:05 UTC35m
2026-07-20 TWB215 TAE → FUK Jul 20, 08:20 UTCJul 20, 08:55 UTC35m
2026-07-20 TWB252 NRT → TAE Jul 20, 05:00 UTCJul 20, 06:40 UTC1h 40m
2026-07-20 TWB251 TAE → NRT Jul 20, 02:15 UTCJul 20, 03:30 UTC1h 15m
2026-07-19 TWB030 DAD → TAE Jul 19, 23:15 UTCJul 19, 23:45 UTC30m
2026-07-19 TWB013 - Jul 19, 13:00 UTCJul 19, 22:10 UTC9h 10m
2026-07-19 TWB672 KHH → ICN Jul 19, 08:25 UTCJul 19, 10:50 UTC2h 25m
2026-07-19 TWB671 ICN → KHH Jul 19, 04:20 UTCJul 19, 06:50 UTC2h 30m
2026-07-19 TWB288 KMJ → ICN Jul 19, 01:35 UTCJul 19, 02:40 UTC1h 5m
2026-07-18 TWB287 - Jul 18, 23:05 UTCJul 19, 00:10 UTC1h 5m
2026-07-18 TWB3630 - Jul 18, 14:15 UTCJul 18, 14:45 UTC30m
2026-07-18 TWB9658 YNJ → YNY Jul 18, 06:55 UTCJul 18, 12:40 UTC5h 45m
2026-07-18 TWB3629 - Jul 18, 04:40 UTCJul 18, 05:05 UTC25m
2026-07-17 TWB056 - Jul 17, 23:10 UTCJul 17, 23:45 UTC35m
2026-07-17 TWB056 - Jul 17, 13:40 UTCJul 17, 21:50 UTC8h 10m
2026-07-17 TWB055 - Jul 17, 12:00 UTCJul 17, 12:45 UTC45m
2026-07-17 TWB304 - Jul 17, 05:55 UTCJul 17, 07:14 UTC1h 20m
2026-07-17 TWB303 ICN → KIX Jul 17, 02:10 UTCJul 17, 03:39 UTC1h 30m
2026-07-16 TWB056 - Jul 16, 22:40 UTCJul 16, 23:20 UTC40m
2026-07-16 TWB055 - Jul 16, 11:20 UTCJul 16, 21:30 UTC10h 10m

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 Jul 26, 23:00 UTC.
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 TWB643, TWB252, TWB251, TWB644, TWB669.