Apparatus

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sensors Mode-S transponder

71C069

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

Currently assigned to HL8069 · BOEING 737-800

Hex
71C069
Octal
34340151
Decimal
7,454,825
Country
KR
Tail
HL8069
Type
B738
No current signal · last broadcast Jul 22, 03:55 UTC
Flights observed
392
Distinct callsigns
20
Country
KR
Last broadcast
Jul 22, 03:55 UTC

Last known position

Most recent position reported by Mode-S 71C069.

Country allocation

The ICAO 24-bit address 71C069 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
TWB728 - 10 2026-07-16
TWB332 Tway Airlines 9 2026-07-20
TWB725 - 8 2026-05-19
TWB735 - 7 2026-07-16
TWB319 Tway Airlines 7 2026-07-20
TWB850 - 6 2026-07-15
TWB806 - 6 2026-07-05
TWB736 - 6 2026-07-16
TWB722 - 6 2026-07-20
TWB720 Tway Airlines 6 2026-05-19
TWB707 - 6 2026-07-06
TWB643 - 6 2026-06-19
TWB314 - 6 2026-06-20
TWB907 Tway Airlines 5 2026-05-12
TWB906 Tway Airlines 5 2026-05-12
TWB849 - 5 2026-07-15
TWB727 - 5 2026-07-20
TWB702 - 5 2026-07-05
TWB667 - 5 2026-07-10
TWB640 - 5 2026-07-11

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-22 TWB243 ICN → NRT Jul 22, 01:45 UTCJul 22, 03:50 UTC2h 5m
2026-07-21 TWB055 ICN → ICN Jul 21, 11:25 UTCJul 21, 23:10 UTC11h 45m
2026-07-21 TWB606 - Jul 21, 09:15 UTCJul 21, 09:40 UTC25m
2026-07-21 TWB605 - Jul 21, 05:10 UTCJul 21, 05:30 UTC20m
2026-07-20 TWB014 DAD → ICN Jul 20, 12:55 UTCJul 20, 23:05 UTC10h 10m
2026-07-20 TWB810 - Jul 20, 10:30 UTCJul 20, 10:55 UTC25m
2026-07-20 TWB727 - Jul 20, 08:25 UTCJul 20, 09:00 UTC35m
2026-07-20 TWB722 - Jul 20, 06:35 UTCJul 20, 07:15 UTC40m
2026-07-20 TWB332 KIX → CJU Jul 20, 03:30 UTCJul 20, 04:25 UTC55m
2026-07-20 TWB319 PUS → KIX Jul 20, 00:50 UTCJul 20, 01:50 UTC1h 0m
2026-07-19 TWB041 PUS → PUS Jul 19, 12:30 UTCJul 19, 22:45 UTC10h 15m
2026-07-19 TWB927 GMP → PUS Jul 19, 10:05 UTCJul 19, 10:50 UTC45m
2026-07-19 TWB652 KHH → GMP Jul 19, 06:00 UTCJul 19, 08:25 UTC2h 25m
2026-07-19 TWB651 GMP → KHH Jul 19, 02:10 UTCJul 19, 04:50 UTC2h 40m
2026-07-18 TWB926 PUS → GMP Jul 18, 07:55 UTCJul 18, 08:40 UTC45m
2026-07-18 TWB925 GMP → PUS Jul 18, 06:05 UTCJul 18, 06:45 UTC40m
2026-07-18 TWB924 PUS → GMP Jul 18, 03:55 UTCJul 18, 04:40 UTC45m
2026-07-18 TWB923 GMP → PUS Jul 18, 02:05 UTCJul 18, 02:55 UTC51m
2026-07-18 TWB706 - Jul 18, 00:15 UTCJul 18, 00:50 UTC35m
2026-07-17 TWB703 - Jul 17, 22:10 UTCJul 17, 22:40 UTC30m
2026-07-17 TWB734 - Jul 17, 11:55 UTCJul 17, 12:35 UTC40m
2026-07-17 TWB733 - Jul 17, 09:45 UTCJul 17, 10:25 UTC40m
2026-07-17 TWB742 - Jul 17, 07:14 UTCJul 17, 07:50 UTC35m
2026-07-17 TWB713 - Jul 17, 03:25 UTCJul 17, 03:59 UTC35m
2026-07-17 TWB708 - Jul 17, 01:35 UTCJul 17, 02:10 UTC35m
2026-07-16 TWB705 - Jul 16, 23:05 UTCJul 16, 23:40 UTC35m
2026-07-16 TWB736 - Jul 16, 12:20 UTCJul 16, 13:00 UTC40m
2026-07-16 TWB735 - Jul 16, 10:10 UTCJul 16, 10:45 UTC35m
2026-07-16 TWB728 - Jul 16, 08:30 UTCJul 16, 09:05 UTC35m
2026-07-16 TWB905 - Jul 16, 06:25 UTCJul 16, 06:40 UTC15m
2026-07-16 TWB904 - Jul 16, 05:00 UTCJul 16, 05:15 UTC15m
2026-07-16 TWB903 - Jul 16, 03:10 UTCJul 16, 03:25 UTC15m
2026-07-15 TWB843 - Jul 15, 23:55 UTCJul 16, 00:20 UTC25m
2026-07-15 TWB850 - Jul 15, 13:10 UTCJul 15, 13:45 UTC35m
2026-07-15 TWB849 - Jul 15, 11:10 UTCJul 15, 11:35 UTC25m
2026-07-15 TWB686 - Jul 15, 07:55 UTCJul 15, 08:25 UTC30m
2026-07-15 TWB685 - Jul 15, 03:05 UTCJul 15, 03:40 UTC35m
2026-07-15 TWB842 - Jul 15, 01:15 UTCJul 15, 01:45 UTC30m
2026-07-14 TWB841 - Jul 14, 23:10 UTCJul 14, 23:35 UTC25m
2026-07-14 TWB850 - Jul 14, 13:10 UTCJul 14, 13:45 UTC35m
2026-07-14 TWB849 - Jul 14, 11:05 UTCJul 14, 11:40 UTC35m
2026-07-14 TWB844 - Jul 14, 09:40 UTCJul 14, 10:10 UTC30m
2026-07-14 TWB690 - Jul 14, 05:50 UTCJul 14, 06:35 UTC45m
2026-07-14 TWB689 - Jul 14, 03:15 UTCJul 14, 04:15 UTC1h 0m
2026-07-14 TWB843 - Jul 14, 00:05 UTCJul 14, 00:35 UTC30m
2026-07-13 TWB850 - Jul 13, 13:10 UTCJul 13, 13:40 UTC30m
2026-07-13 TWB849 - Jul 13, 11:15 UTCJul 13, 11:45 UTC30m
2026-07-13 TWB686 - Jul 13, 08:10 UTCJul 13, 08:45 UTC35m
2026-07-13 TWB685 - Jul 13, 03:30 UTCJul 13, 04:05 UTC35m
2026-07-13 TWB842 - Jul 13, 01:30 UTCJul 13, 02:05 UTC35m

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 HL8069 page for operator, model, and routing details .

Mode-S 71C069 frequently asked

What is Mode-S code 71C069?
71C069 is an ICAO 24-bit transponder address. Allocated to Korea, South. Assigned to HL8069.
Where is Mode-S 71C069 registered?
Mode-S code 71C069 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 71C069 broadcasting right now?
No active broadcast right now. Last signal was Jul 22, 03:55 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 71C069, octal 34340151, decimal 7,454,825.
What flights does 71C069 operate?
Mode-S 71C069 has broadcast 20 distinct callsigns, including TWB728, TWB332, TWB725, TWB735, TWB319.