Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

71C227

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

Currently assigned to HL8227 · AIRBUS A-330-200

Hex
71C227
Octal
34341047
Decimal
7,455,271
Country
KR
Tail
HL8227
Type
A332
No current signal · last broadcast 2h ago
Flights observed
74
Distinct callsigns
8
Country
KR
Last broadcast
2h ago

Last known position

Most recent position reported by Mode-S 71C227.

Country allocation

The ICAO 24-bit address 71C227 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
TWB407 Tway Airlines 15 2026-05-30
TWB405 Tway Airlines 14 2026-05-17
TWB408 Tway Airlines 11 2026-05-24
TWB406 Tway Airlines 10 2026-05-18
TWB404 Tway Airlines 10 2026-05-26
TWB403 Tway Airlines 9 2026-05-25
TWB402 Tway Airlines 3 2026-04-28
TWB401 Tway Airlines 2 2026-04-27

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-30 TWB407 ICN → BCN May 30, 02:25 UTCMay 30, 02:45 UTC20m
2026-05-26 TWB404 FRA → ICN May 26, 04:10 UTCMay 26, 04:30 UTC20m
2026-05-25 TWB404 FRA → ICN May 25, 17:05 UTCMay 26, 03:15 UTC10h 9m
2026-05-25 TWB403 ICN → FRA May 25, 07:05 UTCMay 25, 14:35 UTC7h 30m
2026-05-24 TWB408 BCN → ICN May 24, 07:10 UTCMay 24, 07:30 UTC20m
2026-05-23 TWB408 BCN → ICN May 23, 19:15 UTCMay 24, 00:05 UTC4h 50m
2026-05-23 TWB407 ICN → BCN May 23, 02:25 UTCMay 23, 16:05 UTC13h 39m
2026-05-21 TWB404 FRA → ICN May 21, 04:40 UTCMay 21, 05:00 UTC20m
2026-05-20 TWB404 FRA → ICN May 20, 17:35 UTCMay 21, 03:50 UTC10h 15m
2026-05-20 TWB403 ICN → FRA May 20, 02:40 UTCMay 20, 14:40 UTC12h 1m
2026-05-20 TWB403 ICN → FRA May 20, 01:20 UTCMay 20, 01:40 UTC20m
2026-05-18 TWB406 FCO → ICN May 18, 06:20 UTCMay 18, 06:40 UTC20m
2026-05-17 TWB406 FCO → ICN May 17, 19:35 UTCMay 18, 05:20 UTC9h 45m
2026-05-17 TWB405 ICN → FCO May 17, 09:35 UTCMay 17, 16:55 UTC7h 20m
2026-05-17 TWB405 ICN → FCO May 17, 03:50 UTCMay 17, 04:10 UTC20m
2026-05-16 TWB404 FRA → ICN May 16, 04:40 UTCMay 16, 04:55 UTC15m
2026-05-15 TWB404 FRA → ICN May 15, 18:55 UTCMay 15, 19:25 UTC30m
2026-05-15 TWB404 FRA → ICN May 15, 17:15 UTCMay 15, 18:50 UTC1h 35m
2026-05-15 TWB403 ICN → FRA May 15, 10:40 UTCMay 15, 14:25 UTC3h 45m
2026-05-15 TWB403 ICN → FRA May 15, 01:15 UTCMay 15, 01:35 UTC20m
2026-05-14 TWB404 FRA → ICN May 14, 04:45 UTCMay 14, 05:00 UTC15m
2026-05-13 TWB404 FRA → ICN May 13, 17:35 UTCMay 13, 21:25 UTC3h 50m
2026-05-13 TWB403 ICN → FRA May 13, 06:20 UTCMay 13, 10:55 UTC4h 35m
2026-05-13 TWB403 ICN → FRA May 13, 01:10 UTCMay 13, 01:20 UTC10m
2026-05-11 TWB406 FCO → ICN May 11, 21:30 UTCMay 11, 22:35 UTC1h 4m
2026-05-11 TWB405 ICN → FCO May 11, 12:00 UTCMay 11, 19:45 UTC7h 45m
2026-05-11 TWB405 ICN → FCO May 11, 06:50 UTCMay 11, 07:05 UTC15m
2026-05-10 TWB404 FRA → ICN May 10, 17:15 UTCMay 10, 21:00 UTC3h 45m
2026-05-10 TWB403 ICN → FRA May 10, 10:24 UTCMay 10, 14:59 UTC4h 35m
2026-05-10 TWB403 ICN → FRA May 10, 01:24 UTCMay 10, 01:39 UTC15m
2026-05-08 TWB406 FCO → ICN May 8, 19:40 UTCMay 9, 05:40 UTC10h 0m
2026-05-08 TWB405 ICN → FCO May 8, 10:04 UTCMay 8, 17:55 UTC7h 50m
2026-05-08 TWB405 ICN → FCO May 8, 04:29 UTCMay 8, 04:39 UTC10m
2026-05-03 TWB406 FCO → ICN May 3, 19:34 UTCMay 4, 05:45 UTC10h 10m
2026-05-03 TWB405 ICN → FCO May 3, 09:30 UTCMay 3, 17:05 UTC7h 35m
2026-05-03 TWB405 ICN → FCO May 3, 04:10 UTCMay 3, 04:20 UTC10m
2026-05-01 TWB408 BCN → ICN May 1, 19:10 UTCMay 2, 06:05 UTC10h 56m
2026-05-01 TWB407 ICN → BCN May 1, 03:45 UTCMay 1, 16:25 UTC12h 40m
2026-05-01 TWB407 ICN → BCN May 1, 02:30 UTCMay 1, 02:40 UTC10m
2026-04-29 TWB406 FCO → ICN Apr 29, 19:55 UTCApr 30, 06:50 UTC10h 54m
2026-04-29 TWB405 ICN → FCO Apr 29, 13:40 UTCApr 29, 18:00 UTC4h 20m
2026-04-29 TWB405 ICN → FCO Apr 29, 04:49 UTCApr 29, 05:05 UTC15m
2026-04-28 TWB402 CDG → ICN Apr 28, 06:15 UTCApr 28, 06:35 UTC20m
2026-04-27 TWB402 CDG → ICN Apr 27, 18:45 UTCApr 28, 05:35 UTC10h 50m
2026-04-27 TWB401 ICN → CDG Apr 27, 01:35 UTCApr 27, 16:05 UTC14h 30m
2026-04-25 TWB406 FCO → ICN Apr 25, 06:20 UTCApr 25, 06:40 UTC20m
2026-04-24 TWB406 FCO → ICN Apr 24, 19:40 UTCApr 25, 05:20 UTC9h 40m
2026-04-24 TWB405 ICN → FCO Apr 24, 05:25 UTCApr 24, 17:15 UTC11h 50m
2026-04-24 TWB405 ICN → FCO Apr 24, 04:10 UTCApr 24, 04:25 UTC15m
2026-04-23 TWB406 FCO → ICN Apr 23, 06:25 UTCApr 23, 06:35 UTC10m

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 HL8227 page for operator, model, and routing details .

Mode-S 71C227 frequently asked

What is Mode-S code 71C227?
71C227 is an ICAO 24-bit transponder address. Allocated to Korea, South. Assigned to HL8227.
Where is Mode-S 71C227 registered?
Mode-S code 71C227 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 71C227 broadcasting right now?
No active broadcast right now. Last signal was 2h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 71C227, octal 34341047, decimal 7,455,271.
What flights does 71C227 operate?
Mode-S 71C227 has broadcast 8 distinct callsigns, including TWB407, TWB405, TWB408, TWB406, TWB404.