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 Jul 26, 13:45 UTC
Flights observed
409
Distinct callsigns
20
Country
KR
Last broadcast
Jul 26, 13:45 UTC

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 Tway Airlines 11 2026-07-22
TWB669 Tway Airlines 10 2026-07-20
TWB242 Tway Airlines 10 2026-07-22
TWB670 Tway Airlines 9 2026-07-20
TWB286 Tway Airlines 9 2026-07-20
TWB285 - 8 2026-07-19
TWB208 Tway Airlines 8 2026-07-21
TWB207 Tway Airlines 8 2026-07-21
TWB264 Tway Airlines 7 2026-05-06
TWB806 Tway Airlines 6 2026-07-25
TWB725 Tway Airlines 6 2026-07-26
TWB720 Tway Airlines 6 2026-07-26
TWB306 - 6 2026-07-03
TWB034 Tway Airlines 6 2026-05-19
TWB804 Tway Airlines 5 2026-07-23
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

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 TWB850 - Jul 26, 13:10 UTCJul 26, 13:45 UTC35m
2026-07-26 TWB849 - Jul 26, 11:05 UTCJul 26, 11:40 UTC35m
2026-07-26 TWB844 CJU → CJJ Jul 26, 09:35 UTCJul 26, 10:10 UTC35m
2026-07-26 TWB725 GMP → CJU Jul 26, 06:45 UTCJul 26, 07:15 UTC30m
2026-07-26 TWB720 CJU → GMP Jul 26, 05:00 UTCJul 26, 05:45 UTC45m
2026-07-26 TWB707 GMP → CJU Jul 26, 00:55 UTCJul 26, 01:30 UTC35m
2026-07-25 TWB702 CJU → GMP Jul 25, 23:10 UTCJul 25, 23:55 UTC45m
2026-07-25 TWB801 TAE → CJU Jul 25, 21:30 UTCJul 25, 21:45 UTC15m
2026-07-25 TWB812 - Jul 25, 13:00 UTCJul 25, 13:20 UTC20m
2026-07-25 TWB811 - Jul 25, 10:40 UTCJul 25, 11:00 UTC20m
2026-07-25 TWB806 CJU → TAE Jul 25, 09:20 UTCJul 25, 09:35 UTC15m
2026-07-25 TWB725 GMP → CJU Jul 25, 06:40 UTCJul 25, 07:15 UTC35m
2026-07-25 TWB720 CJU → GMP Jul 25, 04:55 UTCJul 25, 05:40 UTC45m
2026-07-25 TWB228 FUK → CJU Jul 25, 01:40 UTCJul 25, 02:00 UTC20m
2026-07-24 TWB213 TAE → FUK Jul 24, 23:25 UTCJul 24, 23:45 UTC20m
2026-07-24 TWB038 CXR → TAE Jul 24, 11:15 UTCJul 24, 22:10 UTC10h 55m
2026-07-23 TWB804 CJU → TAE Jul 23, 23:50 UTCJul 24, 00:10 UTC20m
2026-07-23 TWB701 GMP → CJU Jul 23, 21:45 UTCJul 23, 22:15 UTC30m
2026-07-23 TWB726 CJU → GMP Jul 23, 08:05 UTCJul 23, 08:45 UTC40m
2026-07-23 TWB721 GMP → CJU Jul 23, 05:45 UTCJul 23, 06:20 UTC35m
2026-07-23 TWB718 CJU → GMP Jul 23, 03:45 UTCJul 23, 04:25 UTC40m
2026-07-23 TWB809 TAE → CJU Jul 23, 01:45 UTCJul 23, 02:00 UTC15m
2026-07-22 TWB804 CJU → TAE Jul 22, 23:55 UTCJul 23, 00:15 UTC20m
2026-07-22 TWB803 - Jul 22, 21:55 UTCJul 22, 22:10 UTC15m
2026-07-22 TWB664 TPE → TAE Jul 22, 18:25 UTCJul 22, 20:20 UTC1h 55m
2026-07-22 TWB663 TAE → TPE Jul 22, 14:05 UTCJul 22, 16:00 UTC1h 55m
2026-07-22 TWB314 KIX → TAE Jul 22, 11:15 UTCJul 22, 12:15 UTC1h 0m
2026-07-22 TWB242 NRT → ICN Jul 22, 04:50 UTCJul 22, 05:25 UTC35m
2026-07-22 TWB241 ICN → NRT Jul 22, 00:10 UTCJul 22, 02:00 UTC1h 50m
2026-07-21 TWB208 FUK → ICN Jul 21, 11:50 UTCJul 21, 13:00 UTC1h 10m
2026-07-21 TWB207 ICN → FUK Jul 21, 09:20 UTCJul 21, 10:10 UTC50m
2026-07-21 TWB202 NRT → TAE Jul 21, 03:55 UTCJul 21, 04:55 UTC1h 0m
2026-07-21 TWB201 ICN → FUK Jul 21, 01:35 UTCJul 21, 02:15 UTC40m
2026-07-20 TWB670 RMQ → ICN Jul 20, 09:15 UTCJul 20, 11:30 UTC2h 15m
2026-07-20 TWB669 ICN → RMQ Jul 20, 05:20 UTCJul 20, 07:30 UTC2h 10m
2026-07-20 TWB286 HSG → ICN Jul 20, 02:15 UTCJul 20, 03:10 UTC55m
2026-07-19 TWB285 - Jul 19, 23:35 UTCJul 20, 00:45 UTC1h 10m
2026-07-19 TWB616 - Jul 19, 19:10 UTCJul 19, 19:35 UTC25m
2026-07-19 TWB615 ICN → WUH Jul 19, 13:10 UTCJul 19, 13:35 UTC25m
2026-07-19 TWB670 RMQ → ICN Jul 19, 09:05 UTCJul 19, 11:10 UTC2h 5m
2026-07-19 TWB669 ICN → RMQ Jul 19, 05:15 UTCJul 19, 07:25 UTC2h 10m
2026-07-19 TWB286 - Jul 19, 01:50 UTCJul 19, 02:50 UTC1h 0m
2026-07-18 TWB285 ICN → HSG Jul 18, 23:30 UTCJul 19, 00:35 UTC1h 5m
2026-07-18 TWB608 - Jul 18, 14:15 UTCJul 18, 14:50 UTC35m
2026-07-18 TWB607 - Jul 18, 11:05 UTCJul 18, 11:35 UTC30m
2026-07-18 TWB606 - Jul 18, 08:35 UTCJul 18, 09:10 UTC35m
2026-07-18 TWB605 - Jul 18, 04:50 UTCJul 18, 05:10 UTC20m
2026-07-17 TWB246 NRT → ICN Jul 17, 10:15 UTCJul 17, 12:10 UTC1h 55m
2026-07-17 TWB245 ICN → NRT Jul 17, 06:25 UTCJul 17, 08:35 UTC2h 10m
2026-07-17 TWB202 - Jul 17, 03:45 UTCJul 17, 04:44 UTC1h 0m

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 Jul 26, 13:45 UTC.
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, TWB669, TWB242, TWB670, TWB286.