Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

71C329

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

Currently assigned to HL8329 · BOEING 737-800

Hex
71C329
Octal
34341451
Decimal
7,455,529
Country
KR
Tail
HL8329
Type
B738
No current signal · last broadcast 27m ago
Flights observed
345
Distinct callsigns
20
Country
KR
Last broadcast
27m ago

Last known position

Most recent position reported by Mode-S 71C329.

Country allocation

The ICAO 24-bit address 71C329 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
TWB241 - 10 2026-07-10
TWB242 - 9 2026-07-11
TWB669 - 8 2026-07-12
TWB670 - 7 2026-07-12
TWB286 - 7 2026-07-12
TWB264 Tway Airlines 7 2026-05-06
TWB208 - 7 2026-07-11
TWB207 - 7 2026-07-11
TWB306 - 6 2026-07-03
TWB285 - 6 2026-07-11
TWB034 Tway Airlines 6 2026-05-19
TWB806 - 5 2026-07-01
TWB305 Tway Airlines 5 2026-05-26
TWB263 Tway Airlines 5 2026-05-06
TWB126 Tway Airlines 5 2026-05-21
TWB125 Tway Airlines 5 2026-05-21
TWB908 - 4 2026-06-28
TWB903 - 4 2026-06-29
TWB841 Tway Airlines 4 2026-06-04
TWB805 - 4 2026-06-22

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 TWB643 - Jul 14, 00:00 UTCJul 14, 02:15 UTC2h 15m
2026-07-13 TWB672 KHH → ICN Jul 13, 08:20 UTCJul 13, 10:50 UTC2h 30m
2026-07-13 TWB671 ICN → KHH Jul 13, 04:25 UTCJul 13, 06:55 UTC2h 30m
2026-07-13 TWB288 - Jul 13, 01:25 UTCJul 13, 02:35 UTC1h 10m
2026-07-12 TWB287 - Jul 12, 23:05 UTCJul 13, 00:10 UTC1h 5m
2026-07-12 TWB616 - Jul 12, 19:10 UTCJul 12, 19:35 UTC25m
2026-07-12 TWB615 - Jul 12, 13:10 UTCJul 12, 13:30 UTC20m
2026-07-12 TWB670 RMQ → ICN Jul 12, 08:55 UTCJul 12, 11:01 UTC2h 5m
2026-07-12 TWB669 ICN → RMQ Jul 12, 05:05 UTCJul 12, 07:25 UTC2h 20m
2026-07-12 TWB286 - Jul 12, 01:35 UTCJul 12, 02:45 UTC1h 10m
2026-07-11 TWB285 ICN → HSG Jul 11, 23:25 UTCJul 12, 00:30 UTC1h 5m
2026-07-11 TWB208 - Jul 11, 11:40 UTCJul 11, 12:35 UTC55m
2026-07-11 TWB207 - Jul 11, 09:20 UTCJul 11, 10:00 UTC40m
2026-07-11 TWB242 NRT → ICN Jul 11, 03:30 UTCJul 11, 05:31 UTC2h 0m
2026-07-10 TWB241 ICN → NRT Jul 10, 23:50 UTCJul 11, 01:45 UTC1h 55m
2026-07-10 TWB208 - Jul 10, 11:40 UTCJul 10, 12:45 UTC1h 5m
2026-07-10 TWB207 - Jul 10, 09:15 UTCJul 10, 09:55 UTC40m
2026-07-09 TWB208 - Jul 9, 11:35 UTCJul 9, 12:40 UTC1h 5m
2026-07-09 TWB207 - Jul 9, 09:20 UTCJul 9, 10:00 UTC40m
2026-07-09 TWB242 NRT → ICN Jul 9, 03:30 UTCJul 9, 05:25 UTC1h 55m
2026-07-08 TWB241 ICN → NRT Jul 8, 23:45 UTCJul 9, 01:45 UTC2h 0m
2026-07-07 TWB606 - Jul 7, 08:45 UTCJul 7, 09:15 UTC30m
2026-07-07 TWB605 - Jul 7, 04:45 UTCJul 7, 05:10 UTC25m
2026-07-06 TWB208 - Jul 6, 11:50 UTCJul 6, 12:55 UTC1h 5m
2026-07-06 TWB207 - Jul 6, 09:20 UTCJul 6, 10:00 UTC40m
2026-07-06 TWB242 NRT → ICN Jul 6, 03:25 UTCJul 6, 05:35 UTC2h 10m
2026-07-05 TWB241 ICN → NRT Jul 5, 23:50 UTCJul 6, 01:40 UTC1h 50m
2026-07-05 TWB208 - Jul 5, 11:40 UTCJul 5, 12:45 UTC1h 5m
2026-07-05 TWB207 - Jul 5, 09:20 UTCJul 5, 10:00 UTC40m
2026-07-05 TWB242 NRT → ICN Jul 5, 03:35 UTCJul 5, 05:40 UTC2h 5m
2026-07-04 TWB241 ICN → NRT Jul 4, 23:55 UTCJul 5, 01:45 UTC1h 50m
2026-07-03 TWB306 - Jul 3, 11:00 UTCJul 3, 12:20 UTC1h 20m
2026-07-03 TWB313 - Jul 3, 02:05 UTCJul 3, 08:55 UTC6h 50m
2026-07-02 TWB311 TAE → KIX Jul 2, 23:05 UTCJul 3, 00:05 UTC1h 0m
2026-07-02 TWB664 - Jul 2, 18:15 UTCJul 2, 20:10 UTC1h 55m
2026-07-02 TWB663 - Jul 2, 14:10 UTCJul 2, 16:05 UTC1h 55m
2026-07-02 TWB216 - Jul 2, 10:35 UTCJul 2, 11:15 UTC40m
2026-07-02 TWB215 - Jul 2, 08:20 UTCJul 2, 08:35 UTC15m
2026-07-02 TWB214 - Jul 2, 06:00 UTCJul 2, 06:30 UTC30m
2026-07-01 TWB213 TAE → FUK Jul 1, 23:15 UTCJul 1, 23:40 UTC25m
2026-07-01 TWB806 - Jul 1, 09:20 UTCJul 1, 09:45 UTC25m
2026-07-01 TWB725 - Jul 1, 06:40 UTCJul 1, 07:15 UTC35m
2026-07-01 TWB720 - Jul 1, 04:50 UTCJul 1, 05:35 UTC45m
2026-07-01 TWB809 - Jul 1, 01:20 UTCJul 1, 01:40 UTC20m
2026-06-30 TWB802 - Jun 30, 23:40 UTCJul 1, 00:00 UTC20m
2026-06-30 TWB801 - Jun 30, 21:15 UTCJun 30, 21:30 UTC15m
2026-06-30 TWB806 - Jun 30, 09:15 UTCJun 30, 09:45 UTC30m
2026-06-29 TWB650 - Jun 29, 19:09 UTCJun 29, 20:40 UTC1h 30m
2026-06-29 TWB649 - Jun 29, 10:10 UTCJun 29, 11:35 UTC1h 25m
2026-06-29 TWB793 - Jun 29, 06:54 UTCJun 29, 07:30 UTC35m

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 HL8329 page for operator, model, and routing details .

Mode-S 71C329 frequently asked

What is Mode-S code 71C329?
71C329 is an ICAO 24-bit transponder address. Allocated to Korea, South. Assigned to HL8329.
Where is Mode-S 71C329 registered?
Mode-S code 71C329 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 71C329 broadcasting right now?
No active broadcast right now. Last signal was 27m ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 71C329, octal 34341451, decimal 7,455,529.
What flights does 71C329 operate?
Mode-S 71C329 has broadcast 20 distinct callsigns, including TWB241, TWB242, TWB669, TWB670, TWB286.