Apparatus

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sensors Mode-S transponder

71C363

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

Currently assigned to HL8363 · BOEING 737-800

Hex
71C363
Octal
34341543
Decimal
7,455,587
Country
KR
Tail
HL8363
Type
B738
Broadcasting now · callsign TWB664 · 3,125 ft
Flights observed
492
Distinct callsigns
20
Country
KR
Last broadcast
Jul 26, 21:45 UTC

Current position

71C363 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 71C363 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 20 distinct

Callsign Airline Flights Last seen
TWB733 - 13 2026-07-21
TWB667 - 12 2026-07-12
TWB734 - 11 2026-07-21
TWB706 - 9 2026-07-10
TWB676 - 9 2026-07-16
TWB640 - 9 2026-07-15
TWB639 - 9 2026-07-15
TWB721 Tway Airlines 8 2026-07-21
TWB668 - 8 2026-07-12
TWB664 Tway Airlines 8 2026-07-19
TWB663 Tway Airlines 8 2026-07-19
TWB805 - 7 2026-07-20
TWB726 Tway Airlines 7 2026-07-21
TWB703 - 7 2026-07-09
TWB701 Tway Airlines 7 2026-07-24
TWB675 - 7 2026-07-16
TWB716 Tway Airlines 6 2026-07-21
TWB709 - 6 2026-07-11
TWB643 Tway Airlines 6 2026-06-11
TWB332 - 6 2026-07-17

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 TWB801 TAE → CJU Jul 26, 21:30 UTCJul 26, 21:45 UTC15m
2026-07-26 TWB314 KIX → TAE Jul 26, 11:00 UTCJul 26, 12:10 UTC1h 10m
2026-07-26 TWB305 ICN → KIX Jul 26, 08:25 UTCJul 26, 09:50 UTC1h 25m
2026-07-26 TWB242 NRT → ICN Jul 26, 03:45 UTCJul 26, 05:45 UTC2h 0m
2026-07-26 TWB241 ICN → NRT Jul 26, 00:20 UTCJul 26, 02:20 UTC2h 0m
2026-07-25 TWB014 DAD → ICN Jul 25, 12:35 UTCJul 25, 23:00 UTC10h 25m
2026-07-25 TWB683 TAE → YNJ Jul 25, 02:15 UTCJul 25, 08:30 UTC6h 15m
2026-07-24 TWB804 CJU → TAE Jul 24, 23:50 UTCJul 25, 00:10 UTC20m
2026-07-24 TWB701 GMP → CJU Jul 24, 21:45 UTCJul 24, 22:20 UTC35m
2026-07-24 TWB736 - Jul 24, 12:30 UTCJul 24, 13:10 UTC40m
2026-07-24 TWB735 GMP → CJU Jul 24, 10:25 UTCJul 24, 11:00 UTC35m
2026-07-24 TWB728 CJU → GMP Jul 24, 08:35 UTCJul 24, 09:15 UTC40m
2026-07-24 TWB905 KWJ → CJU Jul 24, 06:30 UTCJul 24, 06:40 UTC10m
2026-07-24 TWB904 CJU → KWJ Jul 24, 05:15 UTCJul 24, 05:30 UTC15m
2026-07-24 TWB228 FUK → CJU Jul 24, 01:55 UTCJul 24, 02:15 UTC20m
2026-07-23 TWB213 TAE → FUK Jul 23, 23:30 UTCJul 23, 23:50 UTC20m
2026-07-23 TWB038 CXR → TAE Jul 23, 11:00 UTCJul 23, 21:50 UTC10h 50m
2026-07-23 TWB683 TAE → YNJ Jul 23, 02:20 UTCJul 23, 08:10 UTC5h 50m
2026-07-23 TWB106 BKK → TAE Jul 23, 00:15 UTCJul 23, 00:35 UTC20m
2026-07-22 TWB106 BKK → TAE Jul 22, 19:50 UTCJul 22, 23:05 UTC3h 15m
2026-07-22 TWB105 TAE → BKK Jul 22, 14:20 UTCJul 22, 17:45 UTC3h 25m
2026-07-22 TWB105 TAE → BKK Jul 22, 12:45 UTCJul 22, 13:05 UTC20m
2026-07-22 TWB216 NRT → ICN Jul 22, 11:20 UTCJul 22, 11:30 UTC10m
2026-07-22 TWB227 CJU → FUK Jul 22, 04:00 UTCJul 22, 04:30 UTC30m
2026-07-22 TWB707 GMP → CJU Jul 22, 00:55 UTCJul 22, 01:30 UTC35m
2026-07-21 TWB734 - Jul 21, 12:05 UTCJul 21, 12:45 UTC40m
2026-07-21 TWB733 - Jul 21, 09:50 UTCJul 21, 10:25 UTC35m
2026-07-21 TWB726 CJU → GMP Jul 21, 08:05 UTCJul 21, 08:50 UTC45m
2026-07-21 TWB721 GMP → CJU Jul 21, 05:50 UTCJul 21, 06:25 UTC35m
2026-07-21 TWB716 CJU → GMP Jul 21, 03:50 UTCJul 21, 04:30 UTC40m
2026-07-21 TWB707 GMP → CJU Jul 21, 01:05 UTCJul 21, 01:40 UTC35m
2026-07-20 TWB702 CJU → GMP Jul 20, 23:15 UTCJul 20, 23:55 UTC39m
2026-07-20 TWB801 TAE → CJU Jul 20, 21:20 UTCJul 20, 21:35 UTC15m
2026-07-20 TWB812 - Jul 20, 13:55 UTCJul 20, 14:15 UTC20m
2026-07-20 TWB811 - Jul 20, 11:55 UTCJul 20, 12:10 UTC15m
2026-07-20 TWB806 CJU → TAE Jul 20, 10:10 UTCJul 20, 10:35 UTC25m
2026-07-20 TWB715 GMP → CJU Jul 20, 04:20 UTCJul 20, 04:55 UTC35m
2026-07-20 TWB710 - Jul 20, 02:05 UTCJul 20, 02:40 UTC35m
2026-07-20 TWB805 - Jul 20, 00:00 UTCJul 20, 00:10 UTC10m
2026-07-19 TWB664 TPE → TAE Jul 19, 18:05 UTCJul 19, 20:05 UTC2h 0m
2026-07-19 TWB663 TAE → TPE Jul 19, 14:00 UTCJul 19, 15:45 UTC1h 45m
2026-07-19 TWB510 GUM → KIX Jul 19, 11:30 UTCJul 19, 12:00 UTC30m
2026-07-19 TWB510 GUM → KIX Jul 19, 09:40 UTCJul 19, 10:00 UTC20m
2026-07-19 TWB509 KIX → GUM Jul 19, 02:15 UTCJul 19, 02:30 UTC15m
2026-07-19 TWB509 KIX → GUM Jul 19, 00:10 UTCJul 19, 00:55 UTC45m
2026-07-18 TWB038 - Jul 18, 10:55 UTCJul 18, 22:25 UTC11h 30m
2026-07-18 TWB683 - Jul 18, 02:09 UTCJul 18, 08:10 UTC6h 1m
2026-07-18 TWB106 - Jul 18, 00:00 UTCJul 18, 00:29 UTC30m
2026-07-17 TWB106 - Jul 17, 19:30 UTCJul 17, 22:49 UTC3h 20m
2026-07-17 TWB105 - Jul 17, 17:20 UTCJul 17, 17:30 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 HL8363 page for operator, model, and routing details .

Mode-S 71C363 frequently asked

What is Mode-S code 71C363?
71C363 is an ICAO 24-bit transponder address. Allocated to Korea, South. Assigned to HL8363.
Where is Mode-S 71C363 registered?
Mode-S code 71C363 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 71C363 broadcasting right now?
Yes. Mode-S 71C363 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 71C363, octal 34341543, decimal 7,455,587.
What flights does 71C363 operate?
Mode-S 71C363 has broadcast 20 distinct callsigns, including TWB733, TWB667, TWB734, TWB706, TWB676.