Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

71C708

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

Currently assigned to HL8708 · AIRBUS A-330-200

Hex
71C708
Octal
34343410
Decimal
7,456,520
Country
KR
Tail
HL8708
Type
A332
No current signal · last broadcast 16h ago
Flights observed
59
Distinct callsigns
10
Country
KR
Last broadcast
16h ago

Last known position

Most recent position reported by Mode-S 71C708.

Country allocation

The ICAO 24-bit address 71C708 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
TWB407 Tway Airlines 14 2026-05-13
TWB408 Tway Airlines 10 2026-05-13
TWB404 Tway Airlines 10 2026-06-01
TWB403 Tway Airlines 8 2026-05-31
TWB406 Tway Airlines 4 2026-05-22
TWB405 Tway Airlines 4 2026-05-21
TWB401 Tway Airlines 4 2026-05-15
TWB402 Tway Airlines 3 2026-05-16
TWB246 Tway Airlines 1 2026-06-03
TWB245 Tway Airlines 1 2026-06-03

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-06-03 TWB246 NRT → ICN Jun 3, 12:40 UTCJun 3, 14:50 UTC2h 10m
2026-06-03 TWB245 ICN → NRT Jun 3, 08:55 UTCJun 3, 11:10 UTC2h 15m
2026-06-01 TWB404 FRA → ICN Jun 1, 04:30 UTCJun 1, 04:50 UTC20m
2026-05-31 TWB404 FRA → ICN May 31, 17:50 UTCMay 31, 21:30 UTC3h 40m
2026-05-31 TWB403 ICN → FRA May 31, 10:10 UTCMay 31, 14:45 UTC4h 35m
2026-05-25 TWB404 FRA → ICN May 25, 04:20 UTCMay 25, 04:45 UTC25m
2026-05-24 TWB404 FRA → ICN May 24, 17:20 UTCMay 24, 21:20 UTC4h 0m
2026-05-24 TWB403 ICN → FRA May 24, 01:10 UTCMay 24, 11:35 UTC10h 25m
2026-05-22 TWB406 FCO → ICN May 22, 06:30 UTCMay 22, 06:55 UTC25m
2026-05-21 TWB406 FCO → ICN May 21, 19:40 UTCMay 21, 23:30 UTC3h 50m
2026-05-21 TWB405 ICN → FCO May 21, 05:45 UTCMay 21, 14:50 UTC9h 5m
2026-05-21 TWB405 ICN → FCO May 21, 04:20 UTCMay 21, 04:45 UTC25m
2026-05-20 TWB406 FCO → ICN May 20, 06:35 UTCMay 20, 06:55 UTC20m
2026-05-19 TWB406 FCO → ICN May 19, 19:40 UTCMay 20, 05:40 UTC10h 1m
2026-05-19 TWB405 ICN → FCO May 19, 05:30 UTCMay 19, 17:30 UTC12h 0m
2026-05-19 TWB405 ICN → FCO May 19, 04:15 UTCMay 19, 04:30 UTC15m
2026-05-17 TWB404 FRA → ICN May 17, 17:05 UTCMay 17, 21:01 UTC3h 55m
2026-05-17 TWB403 ICN → FRA May 17, 06:40 UTCMay 17, 14:15 UTC7h 35m
2026-05-17 TWB403 ICN → FRA May 17, 01:10 UTCMay 17, 01:35 UTC25m
2026-05-16 TWB402 CDG → ICN May 16, 06:31 UTCMay 16, 07:01 UTC30m
2026-05-15 TWB402 CDG → ICN May 15, 18:50 UTCMay 15, 23:10 UTC4h 20m
2026-05-15 TWB401 ICN → CDG May 15, 07:20 UTCMay 15, 15:10 UTC7h 49m
2026-05-15 TWB401 ICN → CDG May 15, 01:55 UTCMay 15, 02:10 UTC15m
2026-05-13 TWB408 BCN → ICN May 13, 19:15 UTCMay 13, 21:55 UTC2h 40m
2026-05-13 TWB407 ICN → BCN May 13, 08:05 UTCMay 13, 12:45 UTC4h 40m
2026-05-13 TWB407 ICN → BCN May 13, 02:50 UTCMay 13, 03:00 UTC10m
2026-05-11 TWB402 CDG → ICN May 11, 18:45 UTCMay 11, 22:15 UTC3h 30m
2026-05-11 TWB401 ICN → CDG May 11, 07:05 UTCMay 11, 15:20 UTC8h 15m
2026-05-11 TWB401 ICN → CDG May 11, 01:45 UTCMay 11, 01:55 UTC10m
2026-05-09 TWB408 BCN → ICN May 9, 20:49 UTCMay 10, 01:20 UTC4h 30m
2026-05-09 TWB407 ICN → BCN May 9, 08:25 UTCMay 9, 17:10 UTC8h 45m
2026-05-09 TWB407 ICN → BCN May 9, 02:50 UTCMay 9, 03:00 UTC10m
2026-05-06 TWB408 BCN → ICN May 6, 19:20 UTCMay 7, 06:20 UTC11h 0m
2026-05-06 TWB407 ICN → BCN May 6, 04:00 UTCMay 6, 16:50 UTC12h 50m
2026-05-06 TWB407 ICN → BCN May 6, 02:40 UTCMay 6, 02:50 UTC10m
2026-05-04 TWB408 BCN → ICN May 4, 21:40 UTCMay 5, 08:25 UTC10h 45m
2026-05-04 TWB407 ICN → BCN May 4, 08:00 UTCMay 4, 16:30 UTC8h 30m
2026-05-02 TWB404 FRA → ICN May 2, 17:15 UTCMay 3, 03:40 UTC10h 24m
2026-05-02 TWB403 ICN → FRA May 2, 01:20 UTCMay 2, 14:30 UTC13h 11m
2026-04-30 TWB408 BCN → ICN Apr 30, 07:00 UTCApr 30, 07:15 UTC15m
2026-04-29 TWB408 BCN → ICN Apr 29, 19:30 UTCApr 30, 06:10 UTC10h 39m
2026-04-29 TWB407 ICN → BCN Apr 29, 08:50 UTCApr 29, 13:35 UTC4h 46m
2026-04-29 TWB407 ICN → BCN Apr 29, 03:34 UTCApr 29, 03:45 UTC10m
2026-04-28 TWB408 BCN → ICN Apr 28, 07:20 UTCApr 28, 07:35 UTC15m
2026-04-27 TWB408 BCN → ICN Apr 27, 19:40 UTCApr 28, 06:35 UTC10h 55m
2026-04-27 TWB407 ICN → BCN Apr 27, 16:30 UTCApr 27, 16:45 UTC15m
2026-04-27 TWB407 ICN → BCN Apr 27, 02:40 UTCApr 27, 13:10 UTC10h 30m
2026-04-26 TWB404 FRA → ICN Apr 26, 04:05 UTCApr 26, 04:15 UTC10m
2026-04-25 TWB404 FRA → ICN Apr 25, 17:15 UTCApr 26, 03:10 UTC9h 55m
2026-04-25 TWB403 ICN → FRA Apr 25, 01:20 UTCApr 25, 12:00 UTC10h 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 HL8708 page for operator, model, and routing details .

Mode-S 71C708 frequently asked

What is Mode-S code 71C708?
71C708 is an ICAO 24-bit transponder address. Allocated to Korea, South. Assigned to HL8708.
Where is Mode-S 71C708 registered?
Mode-S code 71C708 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 71C708 broadcasting right now?
No active broadcast right now. Last signal was 16h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 71C708, octal 34343410, decimal 7,456,520.
What flights does 71C708 operate?
Mode-S 71C708 has broadcast 10 distinct callsigns, including TWB407, TWB408, TWB404, TWB403, TWB406.