Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

71C394

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

Currently assigned to HL8394 · AIRBUS A-321neo

Hex
71C394
Octal
34341624
Decimal
7,455,636
Country
KR
Tail
HL8394
Type
A21N
No current signal · last broadcast 4h ago
Flights observed
162
Distinct callsigns
20
Country
KR
Last broadcast
4h ago

Last known position

Most recent position reported by Mode-S 71C394.

Country allocation

The ICAO 24-bit address 71C394 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
ABL725 Air Busan 16 2026-05-26
ABL726 Air Busan 15 2026-05-26
ABL602 Air Busan 15 2026-05-29
ABL601 Air Busan 12 2026-05-28
ABL793 Air Busan 8 2026-05-26
ABL8826 Air Busan 6 2026-05-23
ABL8812 Air Busan 6 2026-05-23
ABL794 Air Busan 6 2026-05-08
ABL8819 Air Busan 5 2026-05-23
ABL8803 Air Busan 5 2026-05-16
ABL773 Air Busan 5 2026-05-19
ABL7315 Air Busan 5 2026-05-05
ABL182 Air Busan 5 2026-05-17
ABL181 Air Busan 5 2026-05-21
ABL8823 Air Busan 4 2026-05-23
ABL8820 Air Busan 4 2026-05-23
ABL1635 Air Busan 4 2026-05-25
ABL134 Air Busan 3 2026-05-14
ABL133 Air Busan 3 2026-05-14
ABL126 Air Busan 3 2026-05-24

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-30 ABL1493 FUK → PUS May 30, 02:15 UTCMay 30, 02:25 UTC10m
2026-05-29 ABL602 DPS → PUS May 29, 10:55 UTCMay 29, 20:10 UTC9h 15m
2026-05-28 ABL601 PUS → DPS May 28, 19:05 UTCMay 29, 18:40 UTC23h 35m
2026-05-28 ABL601 PUS → DPS May 28, 18:25 UTCMay 29, 12:55 UTC18h 30m
2026-05-28 ABL745 PUS → VTE May 28, 05:40 UTCMay 28, 16:20 UTC10h 40m
2026-05-27 ABL601 PUS → DPS May 27, 10:45 UTCMay 28, 03:45 UTC17h 0m
2026-05-27 ABL601 PUS → DPS May 27, 03:04 UTCMay 27, 20:00 UTC16h 55m
2026-05-26 ABL726 BKK → PUS May 26, 16:24 UTCMay 27, 01:29 UTC9h 5m
2026-05-26 ABL725 PUS → BKK May 26, 05:49 UTCMay 26, 14:20 UTC8h 30m
2026-05-26 ABL793 PUS → TPE May 26, 02:29 UTCMay 26, 04:10 UTC1h 40m
2026-05-25 ABL1635 FSZ → PUS May 25, 03:05 UTCMay 25, 03:55 UTC50m
2026-05-24 ABL602 DPS → PUS May 24, 05:15 UTCMay 24, 20:15 UTC15h 0m
2026-05-24 ABL126 PUS → KIX May 24, 03:20 UTCMay 24, 04:00 UTC40m
2026-05-23 ABL8025 GMP → CJU May 23, 22:20 UTCMay 23, 22:45 UTC25m
2026-05-23 ABL8826 PUS → GMP May 23, 12:00 UTCMay 23, 12:30 UTC30m
2026-05-23 ABL8823 GMP → PUS May 23, 10:20 UTCMay 23, 10:45 UTC25m
2026-05-23 ABL8820 PUS → GMP May 23, 08:50 UTCMay 23, 09:20 UTC30m
2026-05-23 ABL8819 GMP → PUS May 23, 06:50 UTCMay 23, 07:15 UTC25m
2026-05-23 ABL8812 PUS → GMP May 23, 04:55 UTCMay 23, 05:35 UTC40m
2026-05-22 ABL601 PUS → DPS May 22, 03:00 UTCMay 22, 20:20 UTC17h 20m
2026-05-21 ABL121 KIX → PUS May 21, 10:30 UTCMay 22, 01:40 UTC15h 10m
2026-05-21 ABL181 CTS → PUS May 21, 04:00 UTCMay 21, 09:05 UTC5h 5m
2026-05-20 ABL602 DPS → PUS May 20, 10:20 UTCMay 21, 02:40 UTC16h 20m
2026-05-20 ABL337 PUS → YNJ May 20, 01:00 UTCMay 20, 07:40 UTC6h 41m
2026-05-19 ABL773 PUS → DAD May 19, 09:05 UTCMay 19, 20:35 UTC11h 30m
2026-05-18 ABL726 BKK → PUS May 18, 16:15 UTCMay 19, 07:25 UTC15h 9m
2026-05-17 ABL725 PUS → BKK May 17, 19:25 UTCMay 18, 14:35 UTC19h 10m
2026-05-17 ABL602 DPS → PUS May 17, 18:10 UTCMay 18, 14:35 UTC20h 25m
2026-05-17 ABL602 DPS → PUS May 17, 11:05 UTCMay 18, 11:00 UTC23h 55m
2026-05-17 ABL601 PUS → DPS May 17, 03:55 UTCMay 17, 22:01 UTC18h 5m
2026-05-17 ABL182 PUS → CTS May 17, 00:45 UTCMay 17, 02:40 UTC1h 55m
2026-05-16 ABL8803 GMP → PUS May 16, 22:30 UTCMay 16, 23:00 UTC30m
2026-05-16 ABL8826 PUS → GMP May 16, 11:41 UTCMay 16, 12:16 UTC35m
2026-05-16 ABL8823 GMP → PUS May 16, 09:56 UTCMay 16, 10:31 UTC35m
2026-05-16 ABL8820 PUS → GMP May 16, 08:31 UTCMay 16, 09:06 UTC35m
2026-05-16 ABL8819 GMP → PUS May 16, 06:45 UTCMay 16, 07:16 UTC30m
2026-05-16 ABL8812 PUS → GMP May 16, 05:00 UTCMay 16, 05:30 UTC30m
2026-05-15 ABL602 DPS → PUS May 15, 03:15 UTCMay 15, 21:40 UTC18h 24m
2026-05-14 ABL712 CEB → PUS May 14, 13:35 UTCMay 15, 02:00 UTC12h 25m
2026-05-14 ABL133 MYJ → PUS May 14, 09:45 UTCMay 14, 09:55 UTC10m
2026-05-14 ABL134 PUS → MYJ May 14, 08:10 UTCMay 14, 08:20 UTC10m
2026-05-14 ABL181 CTS → PUS May 14, 04:00 UTCMay 14, 05:30 UTC1h 30m
2026-05-13 ABL182 PUS → CTS May 13, 13:05 UTCMay 14, 02:35 UTC13h 30m
2026-05-13 ABL133 MYJ → PUS May 13, 09:35 UTCMay 13, 09:50 UTC15m
2026-05-13 ABL134 PUS → MYJ May 13, 08:15 UTCMay 13, 08:30 UTC15m
2026-05-13 ABL1635 FSZ → PUS May 13, 03:00 UTCMay 13, 03:50 UTC50m
2026-05-12 ABL726 BKK → PUS May 12, 16:20 UTCMay 13, 01:35 UTC9h 15m
2026-05-12 ABL725 PUS → BKK May 12, 10:40 UTCMay 12, 14:30 UTC3h 50m
2026-05-11 ABL773 PUS → DAD May 11, 12:20 UTCMay 11, 20:10 UTC7h 51m
2026-05-11 ABL8823 GMP → PUS May 11, 10:00 UTCMay 11, 10:25 UTC25m

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 HL8394 page for operator, model, and routing details .

Mode-S 71C394 frequently asked

What is Mode-S code 71C394?
71C394 is an ICAO 24-bit transponder address. Allocated to Korea, South. Assigned to HL8394.
Where is Mode-S 71C394 registered?
Mode-S code 71C394 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 71C394 broadcasting right now?
No active broadcast right now. Last signal was 4h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 71C394, octal 34341624, decimal 7,455,636.
What flights does 71C394 operate?
Mode-S 71C394 has broadcast 20 distinct callsigns, including ABL725, ABL726, ABL602, ABL601, ABL793.