Apparatus

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sensors Mode-S transponder

71C098

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

Currently assigned to HL8098 · BOEING 737-800

Hex
71C098
Octal
34340230
Decimal
7,454,872
Country
KR
Tail
HL8098
Type
B738
No current signal · last broadcast Jul 26, 14:45 UTC
Flights observed
395
Distinct callsigns
20
Country
KR
Last broadcast
Jul 26, 14:45 UTC

Last known position

Most recent position reported by Mode-S 71C098.

Country allocation

The ICAO 24-bit address 71C098 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
TWB663 Tway Airlines 15 2026-07-23
TWB664 Tway Airlines 14 2026-07-23
TWB715 Tway Airlines 11 2026-07-24
TWB710 Tway Airlines 9 2026-07-24
TWB808 Tway Airlines 8 2026-07-24
TWB676 - 8 2026-07-01
TWB331 - 7 2026-06-27
TWB126 - 7 2026-07-16
TWB125 - 7 2026-07-16
TWB907 Tway Airlines 6 2026-07-24
TWB906 Tway Airlines 6 2026-07-24
TWB805 Tway Airlines 6 2026-07-23
TWB320 - 6 2026-06-27
TWB706 - 5 2026-07-05
TWB639 - 5 2026-06-23
TWB332 - 5 2026-07-02
TWB319 - 5 2026-07-02
TWB314 Tway Airlines 5 2026-07-20
TWB312 Tway Airlines 5 2026-05-20
TWB311 Tway Airlines 5 2026-05-19

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 TWB608 TAO → ICN Jul 26, 14:00 UTCJul 26, 14:40 UTC40m
2026-07-26 TWB607 ICN → TAO Jul 26, 10:40 UTCJul 26, 11:05 UTC25m
2026-07-26 TWB606 TNA → ICN Jul 26, 08:25 UTCJul 26, 08:50 UTC25m
2026-07-26 TWB605 ICN → TNA Jul 26, 04:45 UTCJul 26, 05:05 UTC20m
2026-07-26 TWB286 HSG → ICN Jul 26, 01:40 UTCJul 26, 02:45 UTC1h 5m
2026-07-25 TWB285 ICN → HSG Jul 25, 23:30 UTCJul 26, 00:30 UTC1h 0m
2026-07-25 TWB306 KIX → ICN Jul 25, 10:50 UTCJul 25, 12:10 UTC1h 20m
2026-07-25 TWB313 TAE → KIX Jul 25, 08:20 UTCJul 25, 09:00 UTC40m
2026-07-25 TWB214 FUK → TAE Jul 25, 06:05 UTCJul 25, 06:30 UTC25m
2026-07-25 TWB227 CJU → FUK Jul 25, 03:55 UTCJul 25, 04:20 UTC25m
2026-07-25 TWB707 GMP → CJU Jul 25, 01:05 UTCJul 25, 01:40 UTC35m
2026-07-24 TWB702 CJU → GMP Jul 24, 23:10 UTCJul 24, 23:50 UTC40m
2026-07-24 TWB801 TAE → CJU Jul 24, 21:20 UTCJul 24, 21:35 UTC15m
2026-07-24 TWB808 CJU → TAE Jul 24, 09:50 UTCJul 24, 10:05 UTC15m
2026-07-24 TWB907 KWJ → CJU Jul 24, 07:55 UTCJul 24, 08:05 UTC10m
2026-07-24 TWB906 CJU → KWJ Jul 24, 06:35 UTCJul 24, 06:55 UTC20m
2026-07-24 TWB715 GMP → CJU Jul 24, 04:15 UTCJul 24, 04:50 UTC35m
2026-07-24 TWB710 CJU → GMP Jul 24, 02:00 UTCJul 24, 02:40 UTC40m
2026-07-23 TWB805 TAE → CJU Jul 23, 23:55 UTCJul 24, 00:10 UTC15m
2026-07-23 TWB664 TPE → TAE Jul 23, 19:45 UTCJul 23, 20:05 UTC20m
2026-07-23 TWB664 TPE → TAE Jul 23, 18:10 UTCJul 23, 18:30 UTC20m
2026-07-23 TWB663 TAE → TPE Jul 23, 15:35 UTCJul 23, 16:00 UTC25m
2026-07-23 TWB663 TAE → TPE Jul 23, 14:05 UTCJul 23, 14:25 UTC20m
2026-07-23 TWB510 GUM → KIX Jul 23, 11:40 UTCJul 23, 12:05 UTC25m
2026-07-23 TWB510 GUM → KIX Jul 23, 09:40 UTCJul 23, 09:50 UTC10m
2026-07-23 TWB509 KIX → GUM Jul 23, 01:55 UTCJul 23, 02:10 UTC15m
2026-07-22 TWB509 KIX → GUM Jul 22, 23:35 UTCJul 23, 00:10 UTC35m
2026-07-22 TWB9638 - Jul 22, 13:40 UTCJul 22, 20:10 UTC6h 30m
2026-07-22 TWB715 GMP → CJU Jul 22, 04:30 UTCJul 22, 05:05 UTC35m
2026-07-22 TWB710 CJU → GMP Jul 22, 02:00 UTCJul 22, 02:40 UTC40m
2026-07-22 TWB805 TAE → CJU Jul 22, 00:05 UTCJul 22, 00:25 UTC20m
2026-07-21 TWB664 TPE → TAE Jul 21, 19:35 UTCJul 21, 20:10 UTC35m
2026-07-21 TWB664 TPE → TAE Jul 21, 18:05 UTCJul 21, 18:25 UTC20m
2026-07-21 TWB663 TAE → TPE Jul 21, 15:35 UTCJul 21, 15:55 UTC20m
2026-07-21 TWB663 TAE → TPE Jul 21, 14:00 UTCJul 21, 14:20 UTC20m
2026-07-21 TWB808 - Jul 21, 09:45 UTCJul 21, 10:15 UTC30m
2026-07-21 TWB907 - Jul 21, 07:55 UTCJul 21, 08:05 UTC10m
2026-07-21 TWB906 - Jul 21, 06:40 UTCJul 21, 06:50 UTC10m
2026-07-21 TWB715 GMP → CJU Jul 21, 04:15 UTCJul 21, 04:55 UTC40m
2026-07-21 TWB710 CJU → GMP Jul 21, 02:00 UTCJul 21, 02:45 UTC45m
2026-07-21 TWB805 TAE → CJU Jul 21, 00:05 UTCJul 21, 00:15 UTC10m
2026-07-20 TWB664 TPE → TAE Jul 20, 18:25 UTCJul 20, 20:15 UTC1h 50m
2026-07-20 TWB663 TAE → TPE Jul 20, 14:00 UTCJul 20, 15:50 UTC1h 50m
2026-07-20 TWB314 KIX → TAE Jul 20, 10:50 UTCJul 20, 11:55 UTC1h 5m
2026-07-20 TWB305 ICN → KIX Jul 20, 07:30 UTCJul 20, 09:00 UTC1h 30m
2026-07-20 TWB242 NRT → ICN Jul 20, 03:50 UTCJul 20, 05:50 UTC2h 0m
2026-07-19 TWB241 ICN → NRT Jul 19, 23:50 UTCJul 20, 01:45 UTC1h 55m
2026-07-19 TWB246 NRT → ICN Jul 19, 10:25 UTCJul 19, 12:15 UTC1h 50m
2026-07-19 TWB245 ICN → NRT Jul 19, 06:20 UTCJul 19, 08:20 UTC2h 0m
2026-07-19 TWB202 NRT → TAE Jul 19, 03:35 UTCJul 19, 04:40 UTC1h 5m

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 HL8098 page for operator, model, and routing details .

Mode-S 71C098 frequently asked

What is Mode-S code 71C098?
71C098 is an ICAO 24-bit transponder address. Allocated to Korea, South. Assigned to HL8098.
Where is Mode-S 71C098 registered?
Mode-S code 71C098 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 71C098 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 14:45 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 71C098, octal 34340230, decimal 7,454,872.
What flights does 71C098 operate?
Mode-S 71C098 has broadcast 20 distinct callsigns, including TWB663, TWB664, TWB715, TWB710, TWB808.