Apparatus

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sensors Mode-S transponder

71C212

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

Currently assigned to HL8212 · AIRBUS A-330-200

Hex
71C212
Octal
34341022
Decimal
7,455,250
Country
KR
Tail
HL8212
Type
A332
No current signal · last broadcast 2d ago
Flights observed
113
Distinct callsigns
10
Country
KR
Last broadcast
2d ago

Last known position

Most recent position reported by Mode-S 71C212.

Country allocation

The ICAO 24-bit address 71C212 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 10 distinct

Callsign Airline Flights Last seen
TWB403 - 21 2026-06-28
TWB404 - 19 2026-06-29
TWB406 - 18 2026-07-11
TWB405 - 14 2026-07-10
TWB407 - 11 2026-06-26
TWB408 - 10 2026-06-27
TWB402 - 9 2026-06-21
TWB401 - 8 2026-06-20
TWB410 - 2 2026-07-03
TWB409 - 1 2026-07-02

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-11 TWB406 - Jul 11, 05:45 UTCJul 11, 06:15 UTC30m
2026-07-10 TWB406 - Jul 10, 19:40 UTCJul 11, 05:01 UTC9h 21m
2026-07-10 TWB405 - Jul 10, 05:10 UTCJul 10, 14:05 UTC8h 55m
2026-07-10 TWB405 - Jul 10, 03:55 UTCJul 10, 04:20 UTC25m
2026-07-08 TWB406 - Jul 8, 19:40 UTCJul 8, 23:05 UTC3h 25m
2026-07-08 TWB405 - Jul 8, 05:40 UTCJul 8, 17:20 UTC11h 40m
2026-07-08 TWB405 - Jul 8, 04:25 UTCJul 8, 04:45 UTC20m
2026-07-03 TWB410 - Jul 3, 03:10 UTCJul 3, 03:30 UTC20m
2026-07-02 TWB410 - Jul 2, 17:10 UTCJul 3, 02:25 UTC9h 15m
2026-07-02 TWB409 - Jul 2, 02:30 UTCJul 2, 14:40 UTC12h 10m
2026-06-29 TWB404 - Jun 29, 03:49 UTCJun 29, 04:14 UTC25m
2026-06-28 TWB404 - Jun 28, 17:19 UTCJun 29, 03:05 UTC9h 45m
2026-06-28 TWB403 - Jun 28, 02:20 UTCJun 28, 14:25 UTC12h 5m
2026-06-28 TWB403 - Jun 28, 01:10 UTCJun 28, 01:25 UTC15m
2026-06-27 TWB408 - Jun 27, 08:25 UTCJun 27, 08:49 UTC25m
2026-06-26 TWB408 - Jun 26, 20:50 UTCJun 27, 07:30 UTC10h 40m
2026-06-26 TWB407 - Jun 26, 03:45 UTCJun 26, 16:14 UTC12h 30m
2026-06-26 TWB407 - Jun 26, 02:30 UTCJun 26, 02:44 UTC15m
2026-06-23 TWB404 - Jun 23, 04:09 UTCJun 23, 04:29 UTC20m
2026-06-22 TWB404 - Jun 22, 17:29 UTCJun 23, 03:20 UTC9h 50m
2026-06-22 TWB403 - Jun 22, 02:34 UTCJun 22, 14:49 UTC12h 15m
2026-06-22 TWB403 - Jun 22, 01:15 UTCJun 22, 01:29 UTC15m
2026-06-21 TWB402 - Jun 21, 06:10 UTCJun 21, 06:40 UTC30m
2026-06-20 TWB402 - Jun 20, 18:54 UTCJun 21, 05:25 UTC10h 30m
2026-06-20 TWB401 ICN → CDG Jun 20, 01:39 UTCJun 20, 15:49 UTC14h 10m
2026-06-13 TWB404 FRA → ICN Jun 13, 05:15 UTCJun 13, 05:40 UTC25m
2026-06-12 TWB404 FRA → ICN Jun 12, 18:15 UTCJun 13, 04:15 UTC9h 59m
2026-06-12 TWB403 ICN → FRA Jun 12, 02:55 UTCJun 12, 14:50 UTC11h 55m
2026-06-12 TWB403 ICN → FRA Jun 12, 01:35 UTCJun 12, 01:55 UTC20m
2026-06-09 TWB406 FCO → ICN Jun 9, 06:20 UTCJun 9, 06:45 UTC25m
2026-06-08 TWB406 FCO → ICN Jun 8, 19:50 UTCJun 9, 05:35 UTC9h 45m
2026-06-08 TWB405 ICN → FCO Jun 8, 03:55 UTCJun 8, 17:05 UTC13h 10m
2026-06-07 TWB408 BCN → ICN Jun 7, 06:50 UTCJun 7, 07:15 UTC25m
2026-06-06 TWB408 BCN → ICN Jun 6, 19:40 UTCJun 7, 06:10 UTC10h 30m
2026-06-06 TWB407 ICN → BCN Jun 6, 02:25 UTCJun 6, 16:39 UTC14h 15m
2026-06-02 TWB402 CDG → ICN Jun 2, 05:35 UTCJun 2, 06:00 UTC25m
2026-06-01 TWB402 CDG → ICN Jun 1, 18:45 UTCJun 1, 22:55 UTC4h 10m
2026-06-01 TWB401 ICN → CDG Jun 1, 07:10 UTCJun 1, 15:40 UTC8h 30m
2026-06-01 TWB401 ICN → CDG Jun 1, 01:35 UTCJun 1, 01:55 UTC20m
2026-05-30 TWB408 BCN → ICN May 30, 07:35 UTCMay 30, 07:55 UTC20m
2026-05-29 TWB408 BCN → ICN May 29, 20:10 UTCMay 30, 06:45 UTC10h 35m
2026-05-29 TWB407 ICN → BCN May 29, 04:20 UTCMay 29, 17:35 UTC13h 15m
2026-05-29 TWB407 ICN → BCN May 29, 02:55 UTCMay 29, 03:15 UTC20m
2026-05-28 TWB404 FRA → ICN May 28, 03:55 UTCMay 28, 04:20 UTC25m
2026-05-27 TWB404 FRA → ICN May 27, 17:10 UTCMay 28, 03:15 UTC10h 5m
2026-05-27 TWB403 ICN → FRA May 27, 02:39 UTCMay 27, 15:05 UTC12h 25m
2026-05-27 TWB403 ICN → FRA May 27, 01:19 UTCMay 27, 01:34 UTC15m
2026-05-25 TWB406 FCO → ICN May 25, 06:35 UTCMay 25, 06:40 UTC5m
2026-05-25 TWB406 FCO → ICN May 25, 06:20 UTCMay 25, 06:30 UTC10m
2026-05-24 TWB406 FCO → ICN May 24, 19:35 UTCMay 24, 23:15 UTC3h 40m

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 HL8212 page for operator, model, and routing details .

Mode-S 71C212 frequently asked

What is Mode-S code 71C212?
71C212 is an ICAO 24-bit transponder address. Allocated to Korea, South. Assigned to HL8212.
Where is Mode-S 71C212 registered?
Mode-S code 71C212 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 71C212 broadcasting right now?
No active broadcast right now. Last signal was 2d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 71C212, octal 34341022, decimal 7,455,250.
What flights does 71C212 operate?
Mode-S 71C212 has broadcast 10 distinct callsigns, including TWB403, TWB404, TWB406, TWB405, TWB407.