Apparatus

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sensors Mode-S transponder

71C211

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

Currently assigned to HL8211 · AIRBUS A-330-200

Hex
71C211
Octal
34341021
Decimal
7,455,249
Country
KR
Tail
HL8211
Type
A332
No current signal · last broadcast 7h ago
Flights observed
57
Distinct callsigns
8
Country
KR
Last broadcast
7h ago

Last known position

Most recent position reported by Mode-S 71C211.

Country allocation

The ICAO 24-bit address 71C211 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 8 distinct

Callsign Airline Flights Last seen
TWB406 Tway Airlines 10 2026-05-23
TWB405 Tway Airlines 9 2026-05-22
TWB404 Tway Airlines 9 2026-05-30
TWB403 Tway Airlines 9 2026-05-29
TWB402 Tway Airlines 8 2026-05-26
TWB401 Tway Airlines 6 2026-05-25
TWB407 Tway Airlines 4 2026-05-16
TWB408 Tway Airlines 2 2026-05-16

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-30 TWB404 FRA → ICN May 30, 04:10 UTCMay 30, 04:35 UTC25m
2026-05-29 TWB404 FRA → ICN May 29, 17:20 UTCMay 29, 21:00 UTC3h 40m
2026-05-29 TWB403 ICN → FRA May 29, 02:40 UTCMay 29, 15:00 UTC12h 20m
2026-05-29 TWB403 ICN → FRA May 29, 01:15 UTCMay 29, 01:40 UTC25m
2026-05-26 TWB402 CDG → ICN May 26, 06:14 UTCMay 26, 06:39 UTC25m
2026-05-25 TWB402 CDG → ICN May 25, 18:50 UTCMay 26, 05:30 UTC10h 39m
2026-05-25 TWB401 ICN → CDG May 25, 02:00 UTCMay 25, 15:15 UTC13h 15m
2026-05-23 TWB406 FCO → ICN May 23, 06:35 UTCMay 23, 06:55 UTC20m
2026-05-22 TWB406 FCO → ICN May 22, 19:40 UTCMay 22, 21:50 UTC2h 10m
2026-05-22 TWB405 ICN → FCO May 22, 04:20 UTCMay 22, 16:55 UTC12h 35m
2026-05-21 TWB406 FCO → ICN May 21, 06:25 UTCMay 21, 06:45 UTC20m
2026-05-20 TWB406 FCO → ICN May 20, 19:40 UTCMay 21, 05:35 UTC9h 55m
2026-05-20 TWB405 ICN → FCO May 20, 05:35 UTCMay 20, 17:10 UTC11h 35m
2026-05-20 TWB405 ICN → FCO May 20, 04:20 UTCMay 20, 04:40 UTC21m
2026-05-19 TWB402 CDG → ICN May 19, 06:25 UTCMay 19, 06:45 UTC20m
2026-05-18 TWB402 CDG → ICN May 18, 18:50 UTCMay 19, 05:35 UTC10h 45m
2026-05-18 TWB401 ICN → CDG May 18, 01:35 UTCMay 18, 15:20 UTC13h 45m
2026-05-16 TWB408 BCN → ICN May 16, 19:20 UTCMay 17, 07:05 UTC11h 45m
2026-05-16 TWB407 ICN → BCN May 16, 11:16 UTCMay 16, 16:31 UTC5h 15m
2026-05-16 TWB407 ICN → BCN May 16, 02:25 UTCMay 16, 02:35 UTC10m
2026-05-14 TWB406 FCO → ICN May 14, 06:25 UTCMay 14, 06:50 UTC25m
2026-05-13 TWB406 FCO → ICN May 13, 19:30 UTCMay 13, 22:55 UTC3h 25m
2026-05-13 TWB405 ICN → FCO May 13, 09:45 UTCMay 13, 17:35 UTC7h 50m
2026-05-13 TWB405 ICN → FCO May 13, 04:25 UTCMay 13, 04:35 UTC10m
2026-05-06 TWB406 FCO → ICN May 6, 19:35 UTCMay 7, 05:30 UTC9h 55m
2026-05-06 TWB405 ICN → FCO May 6, 04:05 UTCMay 6, 17:05 UTC13h 0m
2026-05-04 TWB402 CDG → ICN May 4, 19:00 UTCMay 5, 05:45 UTC10h 45m
2026-05-04 TWB401 ICN → CDG May 4, 02:54 UTCMay 4, 15:25 UTC12h 30m
2026-05-02 TWB402 CDG → ICN May 2, 18:45 UTCMay 3, 05:45 UTC10h 59m
2026-05-02 TWB401 ICN → CDG May 2, 01:35 UTCMay 2, 15:15 UTC13h 40m
2026-05-01 TWB404 FRA → ICN May 1, 04:25 UTCMay 1, 04:35 UTC10m
2026-04-30 TWB404 FRA → ICN Apr 30, 17:10 UTCMay 1, 03:30 UTC10h 20m
2026-04-30 TWB403 ICN → FRA Apr 30, 09:50 UTCApr 30, 14:30 UTC4h 40m
2026-04-27 TWB406 FCO → ICN Apr 27, 20:30 UTCApr 28, 07:35 UTC11h 5m
2026-04-27 TWB405 ICN → FCO Apr 27, 04:05 UTCApr 27, 17:40 UTC13h 35m
2026-04-25 TWB408 BCN → ICN Apr 25, 19:35 UTCApr 25, 22:30 UTC2h 55m
2026-04-25 TWB407 ICN → BCN Apr 25, 04:00 UTCApr 25, 16:40 UTC12h 40m
2026-04-25 TWB407 ICN → BCN Apr 25, 02:50 UTCApr 25, 03:00 UTC10m
2026-04-20 TWB406 FCO → ICN Apr 20, 19:30 UTCApr 21, 05:30 UTC10h 0m
2026-04-20 TWB405 ICN → FCO Apr 20, 05:30 UTCApr 20, 17:20 UTC11h 50m
2026-04-20 TWB405 ICN → FCO Apr 20, 03:55 UTCApr 20, 04:10 UTC15m
2026-04-19 TWB402 CDG → ICN Apr 19, 06:25 UTCApr 19, 06:35 UTC10m
2026-04-18 TWB402 CDG → ICN Apr 18, 18:55 UTCApr 19, 05:25 UTC10h 30m
2026-04-18 TWB401 ICN → CDG Apr 18, 11:35 UTCApr 18, 15:45 UTC4h 10m
2026-04-18 TWB401 ICN → CDG Apr 18, 01:30 UTCApr 18, 01:45 UTC15m
2026-04-17 TWB404 FRA → ICN Apr 17, 04:25 UTCApr 17, 04:40 UTC16m
2026-04-16 TWB404 FRA → ICN Apr 16, 19:15 UTCApr 16, 21:10 UTC1h 55m
2026-04-16 TWB404 FRA → ICN Apr 16, 17:15 UTCApr 16, 19:10 UTC1h 55m
2026-04-16 TWB403 ICN → FRA Apr 16, 13:15 UTCApr 16, 14:45 UTC1h 30m
2026-04-16 TWB403 ICN → FRA Apr 16, 11:09 UTCApr 16, 13:05 UTC1h 55m

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 HL8211 page for operator, model, and routing details .

Mode-S 71C211 frequently asked

What is Mode-S code 71C211?
71C211 is an ICAO 24-bit transponder address. Allocated to Korea, South. Assigned to HL8211.
Where is Mode-S 71C211 registered?
Mode-S code 71C211 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 71C211 broadcasting right now?
No active broadcast right now. Last signal was 7h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 71C211, octal 34341021, decimal 7,455,249.
What flights does 71C211 operate?
Mode-S 71C211 has broadcast 8 distinct callsigns, including TWB406, TWB405, TWB404, TWB403, TWB402.