Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

71C500

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

Currently assigned to HL8500 · AIRBUS A-330-300

Hex
71C500
Octal
34342400
Decimal
7,456,000
Country
KR
Tail
HL8500
Type
A333
No current signal · last broadcast 11d ago
Flights observed
184
Distinct callsigns
19
Country
KR
Last broadcast
11d ago

Last known position

Most recent position reported by Mode-S 71C500.

Country allocation

The ICAO 24-bit address 71C500 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 19 distinct

Callsign Airline Flights Last seen
TWB155 Tway Airlines 27 2026-07-26
TWB156 Tway Airlines 22 2026-07-26
TWB162 - 13 2026-07-02
TWB161 - 12 2026-07-02
TWB502 Tway Airlines 11 2026-07-25
TWB501 Tway Airlines 11 2026-07-24
TWB421 - 11 2026-07-06
TWB531 - 10 2026-07-07
TWB614 Tway Airlines 9 2026-07-26
TWB613 Tway Airlines 9 2026-07-25
TWB532 - 9 2026-07-08
TWB422 - 9 2026-07-06
TWB263 Tway Airlines 9 2026-07-24
TWB264 Tway Airlines 8 2026-07-24
TWB202 Tway Airlines 7 2026-06-03
TWB201 Tway Airlines 4 2026-06-03
TWB304 Tway Airlines 1 2026-05-27
TWB303 Tway Airlines 1 2026-05-27
TWB102F - 1 2026-05-05

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 TWB156 CGK → ICN Jul 26, 16:40 UTCJul 26, 22:00 UTC5h 20m
2026-07-26 TWB156 CGK → ICN Jul 26, 14:55 UTCJul 26, 15:05 UTC10m
2026-07-26 TWB155 ICN → CGK Jul 26, 12:25 UTCJul 26, 12:45 UTC20m
2026-07-26 TWB155 ICN → CGK Jul 26, 06:25 UTCJul 26, 11:10 UTC4h 46m
2026-07-26 TWB614 SHE → ICN Jul 26, 04:00 UTCJul 26, 04:20 UTC20m
2026-07-25 TWB613 ICN → SHE Jul 25, 23:40 UTCJul 26, 00:10 UTC30m
2026-07-25 TWB502 SYD → ICN Jul 25, 02:00 UTCJul 25, 12:15 UTC10h 15m
2026-07-24 TWB501 ICN → SYD Jul 24, 13:35 UTCJul 24, 23:55 UTC10h 20m
2026-07-24 TWB264 CTS → ICN Jul 24, 05:50 UTCJul 24, 08:20 UTC2h 30m
2026-07-24 TWB263 ICN → CTS Jul 24, 01:30 UTCJul 24, 03:55 UTC2h 25m
2026-07-23 TWB502 SYD → ICN Jul 23, 02:10 UTCJul 23, 12:25 UTC10h 15m
2026-07-22 TWB501 ICN → SYD Jul 22, 13:45 UTCJul 22, 23:45 UTC10h 0m
2026-07-22 TWB263 ICN → CTS Jul 22, 01:30 UTCJul 22, 03:50 UTC2h 20m
2026-07-21 TWB264 CTS → ICN Jul 21, 06:00 UTCJul 21, 08:25 UTC2h 25m
2026-07-21 TWB263 ICN → CTS Jul 21, 01:45 UTCJul 21, 04:05 UTC2h 20m
2026-07-20 TWB156 CGK → ICN Jul 20, 16:55 UTCJul 20, 22:10 UTC5h 15m
2026-07-20 TWB155 ICN → CGK Jul 20, 12:50 UTCJul 20, 13:05 UTC15m
2026-07-20 TWB155 ICN → CGK Jul 20, 06:35 UTCJul 20, 11:25 UTC4h 50m
2026-07-20 TWB614 - Jul 20, 03:55 UTCJul 20, 04:20 UTC25m
2026-07-19 TWB613 - Jul 19, 23:35 UTCJul 19, 23:55 UTC20m
2026-07-19 TWB614 - Jul 19, 04:55 UTCJul 19, 05:25 UTC30m
2026-07-18 TWB613 - Jul 18, 23:40 UTCJul 19, 00:05 UTC25m
2026-07-18 TWB264 - Jul 18, 05:50 UTCJul 18, 08:15 UTC2h 25m
2026-07-18 TWB263 ICN → CTS Jul 18, 01:25 UTCJul 18, 03:35 UTC2h 11m
2026-07-17 TWB156 - Jul 17, 17:50 UTCJul 17, 23:05 UTC5h 15m
2026-07-17 TWB155 - Jul 17, 12:35 UTCJul 17, 12:50 UTC15m
2026-07-17 TWB155 - Jul 17, 06:10 UTCJul 17, 11:00 UTC4h 50m
2026-07-17 TWB614 - Jul 17, 03:50 UTCJul 17, 04:20 UTC30m
2026-07-16 TWB613 - Jul 16, 23:35 UTCJul 16, 23:59 UTC25m
2026-07-15 TWB264 CTS → ICN Jul 15, 05:50 UTCJul 15, 08:15 UTC2h 25m
2026-07-15 TWB263 - Jul 15, 01:30 UTCJul 15, 03:50 UTC2h 20m
2026-07-13 TWB264 - Jul 13, 05:40 UTCJul 13, 08:01 UTC2h 20m
2026-07-13 TWB263 ICN → CTS Jul 13, 01:35 UTCJul 13, 04:00 UTC2h 25m
2026-07-12 TWB156 - Jul 12, 16:50 UTCJul 12, 22:25 UTC5h 35m
2026-07-12 TWB156 - Jul 12, 15:10 UTCJul 12, 15:20 UTC10m
2026-07-12 TWB155 - Jul 12, 12:55 UTCJul 12, 13:10 UTC15m
2026-07-12 TWB155 - Jul 12, 06:45 UTCJul 12, 11:30 UTC4h 45m
2026-07-12 TWB614 - Jul 12, 04:05 UTCJul 12, 04:25 UTC20m
2026-07-11 TWB613 - Jul 11, 23:25 UTCJul 11, 23:50 UTC25m
2026-07-11 TWB502 SYD → ICN Jul 11, 03:40 UTCJul 11, 13:35 UTC9h 55m
2026-07-10 TWB501 ICN → SYD Jul 10, 15:50 UTCJul 11, 01:50 UTC10h 0m
2026-07-10 TWB264 - Jul 10, 05:50 UTCJul 10, 08:15 UTC2h 25m
2026-07-10 TWB263 ICN → CTS Jul 10, 01:35 UTCJul 10, 03:50 UTC2h 15m
2026-07-08 TWB532 - Jul 8, 00:35 UTCJul 8, 11:35 UTC11h 0m
2026-07-07 TWB531 ICN → YVR Jul 7, 12:00 UTCJul 7, 21:35 UTC9h 35m
2026-07-07 TWB264 - Jul 7, 05:45 UTCJul 7, 08:10 UTC2h 25m
2026-07-07 TWB263 - Jul 7, 01:30 UTCJul 7, 03:45 UTC2h 15m
2026-07-06 TWB422 - Jul 6, 09:25 UTCJul 6, 09:50 UTC25m
2026-07-06 TWB421 - Jul 6, 02:40 UTCJul 6, 04:15 UTC1h 35m
2026-07-05 TWB156 - Jul 5, 17:00 UTCJul 5, 22:05 UTC5h 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 HL8500 page for operator, model, and routing details .

Mode-S 71C500 frequently asked

What is Mode-S code 71C500?
71C500 is an ICAO 24-bit transponder address. Allocated to Korea, South. Assigned to HL8500.
Where is Mode-S 71C500 registered?
Mode-S code 71C500 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 71C500 broadcasting right now?
No active broadcast right now. Last signal was 11d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 71C500, octal 34342400, decimal 7,456,000.
What flights does 71C500 operate?
Mode-S 71C500 has broadcast 19 distinct callsigns, including TWB155, TWB156, TWB162, TWB161, TWB502.