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sensors Mode-S transponder

71C744

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

Currently assigned to HL8744 · AIRBUS A-320

Hex
71C744
Octal
34343504
Decimal
7,456,580
Country
KR
Tail
HL8744
Type
A320
Broadcasting now · callsign EOK352 · 35,000 ft
Flights observed
444
Distinct callsigns
20
Country
KR
Last broadcast
Jul 26, 21:10 UTC

Current position

71C744 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 71C744 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
EOK512 - 31 2026-06-25
EOK511 - 25 2026-06-25
EOK332 - 20 2026-06-24
EOK331 - 20 2026-06-24
EOK342 - 19 2026-06-25
EOK341 - 19 2026-06-25
EOK614 - 18 2026-07-20
EOK613 - 17 2026-07-20
EOK610 - 17 2026-07-20
EOK609 Aero K 17 2026-07-20
EOK393 - 15 2026-07-17
EOK321 Aero K 13 2026-07-24
EOK311 Aero K 13 2026-07-23
EOK312 Aero K 12 2026-07-22
EOK557 - 11 2026-07-21
EOK394 - 10 2026-07-16
EOK351 Aero K 10 2026-07-26
EOK322 Aero K 10 2026-07-24
EOK317 Aero K 10 2026-07-26
EOK558 Aero K 9 2026-07-25

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 EOK422 UBN → CJJ Jul 26, 20:40 UTCJul 26, 21:10 UTC30m
2026-07-26 EOK421 CJJ → UBN Jul 26, 12:40 UTCJul 26, 14:20 UTC1h 40m
2026-07-26 EOK317 KIX → CJJ Jul 26, 10:10 UTCJul 26, 11:15 UTC1h 5m
2026-07-26 EOK318 CJJ → KIX Jul 26, 07:05 UTCJul 26, 08:20 UTC1h 15m
2026-07-26 EOK351 CTS → CJJ Jul 26, 03:05 UTCJul 26, 05:15 UTC2h 10m
2026-07-25 EOK352 CJJ → CTS Jul 25, 23:35 UTCJul 26, 01:55 UTC2h 20m
2026-07-25 EOK558 CXR → CJJ Jul 25, 11:25 UTCJul 25, 21:40 UTC10h 15m
2026-07-25 EOK351 CTS → CJJ Jul 25, 03:05 UTCJul 25, 05:15 UTC2h 10m
2026-07-24 EOK352 CJJ → CTS Jul 24, 23:45 UTCJul 25, 01:55 UTC2h 10m
2026-07-24 EOK558 CXR → CJJ Jul 24, 10:55 UTCJul 24, 21:20 UTC10h 25m
2026-07-24 EOK321 NRT → CJJ Jul 24, 04:30 UTCJul 24, 06:15 UTC1h 45m
2026-07-24 EOK322 CJJ → NRT Jul 24, 00:55 UTCJul 24, 02:50 UTC1h 55m
2026-07-23 EOK532 DAD → CJJ Jul 23, 12:40 UTCJul 23, 22:50 UTC10h 10m
2026-07-23 EOK355 CTS → CJJ Jul 23, 08:35 UTCJul 23, 10:00 UTC1h 25m
2026-07-23 EOK356 CJJ → CTS Jul 23, 04:55 UTCJul 23, 07:15 UTC2h 20m
2026-07-23 EOK311 KIX → CJJ Jul 23, 02:30 UTCJul 23, 03:40 UTC1h 10m
2026-07-22 EOK312 CJJ → KIX Jul 22, 23:50 UTCJul 23, 01:10 UTC1h 20m
2026-07-22 EOK558 CXR → CJJ Jul 22, 12:10 UTCJul 22, 22:25 UTC10h 15m
2026-07-22 EOK356 CJJ → CTS Jul 22, 04:45 UTCJul 22, 05:25 UTC40m
2026-07-22 EOK311 KIX → CJJ Jul 22, 02:10 UTCJul 22, 03:20 UTC1h 10m
2026-07-21 EOK312 CJJ → KIX Jul 21, 23:20 UTCJul 22, 00:30 UTC1h 10m
2026-07-21 EOK557 - Jul 21, 10:55 UTCJul 21, 21:25 UTC10h 30m
2026-07-21 EOK391 - Jul 21, 02:05 UTCJul 21, 03:45 UTC1h 40m
2026-07-20 EOK392 CJJ → NRT Jul 20, 22:35 UTCJul 21, 00:25 UTC1h 49m
2026-07-20 EOK614 - Jul 20, 13:00 UTCJul 20, 13:30 UTC30m
2026-07-20 EOK613 - Jul 20, 10:15 UTCJul 20, 10:40 UTC25m
2026-07-20 EOK610 - Jul 20, 08:30 UTCJul 20, 09:00 UTC30m
2026-07-20 EOK609 CJJ → CJU Jul 20, 06:15 UTCJul 20, 06:45 UTC30m
2026-07-20 EOK373 - Jul 20, 03:00 UTCJul 20, 03:50 UTC50m
2026-07-19 EOK374 - Jul 19, 23:50 UTCJul 20, 00:35 UTC45m
2026-07-19 EOK532 - Jul 19, 22:00 UTCJul 19, 22:30 UTC30m
2026-07-19 EOK531 - Jul 19, 12:40 UTCJul 19, 20:55 UTC8h 15m
2026-07-19 EOK355 CTS → CJJ Jul 19, 08:20 UTCJul 19, 10:35 UTC2h 15m
2026-07-19 EOK356 CJJ → CTS Jul 19, 04:45 UTCJul 19, 07:10 UTC2h 25m
2026-07-19 EOK311 KIX → CJJ Jul 19, 02:05 UTCJul 19, 03:10 UTC1h 5m
2026-07-18 EOK312 CJJ → KIX Jul 18, 23:25 UTCJul 19, 00:35 UTC1h 10m
2026-07-18 EOK558 - Jul 18, 21:20 UTCJul 18, 21:50 UTC30m
2026-07-18 EOK557 - Jul 18, 11:50 UTCJul 18, 20:05 UTC8h 15m
2026-07-18 EOK391 - Jul 18, 02:05 UTCJul 18, 03:40 UTC1h 36m
2026-07-17 EOK392 - Jul 17, 22:40 UTCJul 18, 00:35 UTC1h 55m
2026-07-17 EOK421 - Jul 17, 12:45 UTCJul 17, 21:20 UTC8h 35m
2026-07-17 EOK3613 - Jul 17, 08:59 UTCJul 17, 10:35 UTC1h 35m
2026-07-17 EOK3623 - Jul 17, 05:45 UTCJul 17, 07:30 UTC1h 45m
2026-07-17 EOK393 - Jul 17, 02:20 UTCJul 17, 02:50 UTC30m
2026-07-17 EOK393 - Jul 17, 01:15 UTCJul 17, 01:25 UTC10m
2026-07-16 EOK394 - Jul 16, 23:35 UTCJul 16, 23:55 UTC20m
2026-07-16 EOK394 - Jul 16, 22:19 UTCJul 16, 22:49 UTC30m
2026-07-16 EOK323 - Jul 16, 10:50 UTCJul 16, 12:30 UTC1h 40m
2026-07-16 EOK324 - Jul 16, 07:45 UTCJul 16, 09:40 UTC1h 55m
2026-07-16 EOK391 - Jul 16, 01:55 UTCJul 16, 03:40 UTC1h 45m

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 HL8744 page for operator, model, and routing details .

Mode-S 71C744 frequently asked

What is Mode-S code 71C744?
71C744 is an ICAO 24-bit transponder address. Allocated to Korea, South. Assigned to HL8744.
Where is Mode-S 71C744 registered?
Mode-S code 71C744 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 71C744 broadcasting right now?
Yes. Mode-S 71C744 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 71C744, octal 34343504, decimal 7,456,580.
What flights does 71C744 operate?
Mode-S 71C744 has broadcast 20 distinct callsigns, including EOK512, EOK511, EOK332, EOK331, EOK342.