Apparatus

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sensors Mode-S transponder

71C246

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

Currently assigned to HL8246 · BOEING 737-800

Hex
71C246
Octal
34341106
Decimal
7,455,302
Country
KR
Tail
HL8246
Type
B738
No current signal · last broadcast 1d ago
Flights observed
425
Distinct callsigns
20
Country
KR
Last broadcast
1d ago

Last known position

Most recent position reported by Mode-S 71C246.

Country allocation

The ICAO 24-bit address 71C246 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
JNA224 - 14 2026-07-19
JNA223 Jin Air 14 2026-07-19
JNA713 - 12 2026-07-20
JNA511 Jin Air 9 2026-07-26
JNA021 Jin Air 9 2026-07-23
JNA752 - 8 2026-07-08
JNA516 Jin Air 8 2026-07-26
JNA221 - 8 2026-07-16
JNA202 - 8 2026-07-17
JNA201 - 8 2026-07-10
JNA751 - 7 2026-07-08
JNA714 - 7 2026-07-20
JNA508 Jin Air 7 2026-07-26
JNA473 - 7 2026-07-18
JNA471 Jin Air 7 2026-07-26
JNA231 - 7 2026-07-18
JNA515 Jin Air 6 2026-07-26
JNA474 - 6 2026-07-18
JNA376 - 6 2026-07-15
JNA375 - 6 2026-07-14

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 JNA824 YNJ → CJU Jul 26, 13:00 UTCJul 26, 20:20 UTC7h 20m
2026-07-26 JNA515 GMP → CJU Jul 26, 10:25 UTCJul 26, 11:00 UTC35m
2026-07-26 JNA516 CJU → GMP Jul 26, 08:45 UTCJul 26, 09:25 UTC40m
2026-07-26 JNA511 GMP → CJU Jul 26, 06:35 UTCJul 26, 07:10 UTC35m
2026-07-26 JNA508 CJU → GMP Jul 26, 04:50 UTCJul 26, 05:30 UTC40m
2026-07-26 JNA471 WJU → CJU Jul 26, 02:25 UTCJul 26, 03:05 UTC40m
2026-07-26 JNA472 CJU → WJU Jul 26, 00:35 UTCJul 26, 01:10 UTC35m
2026-07-25 JNA561 PUS → CJU Jul 25, 22:50 UTCJul 25, 23:10 UTC20m
2026-07-25 JNA922 GUM → PUS Jul 25, 12:15 UTCJul 25, 21:10 UTC8h 55m
2026-07-25 JNA742 RMQ → PUS Jul 25, 09:50 UTCJul 25, 10:15 UTC25m
2026-07-25 JNA742 RMQ → PUS Jul 25, 08:15 UTCJul 25, 08:35 UTC20m
2026-07-25 JNA741 PUS → RMQ Jul 25, 06:15 UTCJul 25, 06:45 UTC30m
2026-07-25 JNA741 PUS → RMQ Jul 25, 04:45 UTCJul 25, 05:10 UTC25m
2026-07-25 JNA292 FUK → PUS Jul 25, 02:30 UTCJul 25, 02:55 UTC25m
2026-07-25 JNA291 PUS → FUK Jul 25, 00:10 UTCJul 25, 00:25 UTC15m
2026-07-24 JNA120 PQC → PUS Jul 24, 22:30 UTCJul 24, 22:50 UTC20m
2026-07-24 JNA119 PUS → PQC Jul 24, 11:40 UTCJul 24, 21:20 UTC9h 40m
2026-07-24 JNA254 KIX → PUS Jul 24, 09:00 UTCJul 24, 10:05 UTC1h 5m
2026-07-24 JNA253 PUS → KIX Jul 24, 06:25 UTCJul 24, 07:25 UTC1h 0m
2026-07-24 JNA372 OKA → PUS Jul 24, 02:50 UTCJul 24, 04:20 UTC1h 30m
2026-07-24 JNA371 PUS → OKA Jul 24, 01:00 UTCJul 24, 01:25 UTC25m
2026-07-23 JNA371 PUS → OKA Jul 23, 23:50 UTCJul 24, 00:10 UTC20m
2026-07-23 JNA022 BKK → PUS Jul 23, 17:35 UTCJul 23, 22:25 UTC4h 50m
2026-07-23 JNA021 PUS → BKK Jul 23, 12:35 UTCJul 23, 16:05 UTC3h 30m
2026-07-23 JNA021 PUS → BKK Jul 23, 10:55 UTCJul 23, 11:10 UTC15m
2026-07-23 JNA564 CJU → PUS Jul 23, 08:15 UTCJul 23, 08:35 UTC20m
2026-07-23 JNA567 - Jul 23, 06:05 UTCJul 23, 06:15 UTC10m
2026-07-23 JNA562 CJU → PUS Jul 23, 04:35 UTCJul 23, 04:55 UTC20m
2026-07-23 JNA463 KUV → CJU Jul 23, 02:25 UTCJul 23, 02:40 UTC15m
2026-07-23 JNA464 CJU → KUV Jul 23, 00:50 UTCJul 23, 01:00 UTC10m
2026-07-22 JNA505 GMP → CJU Jul 22, 22:50 UTCJul 22, 23:25 UTC35m
2026-07-22 JNA506 CJU → GMP Jul 22, 02:25 UTCJul 22, 03:05 UTC40m
2026-07-21 JNA671 GMP → RSU Jul 21, 23:00 UTCJul 21, 23:30 UTC30m
2026-07-21 JNA516 - Jul 21, 09:20 UTCJul 21, 10:05 UTC45m
2026-07-21 JNA511 - Jul 21, 06:55 UTCJul 21, 07:30 UTC35m
2026-07-20 JNA502 CJU → GMP Jul 20, 22:35 UTCJul 20, 23:20 UTC45m
2026-07-20 JNA714 - Jul 20, 18:15 UTCJul 20, 19:45 UTC1h 30m
2026-07-20 JNA713 - Jul 20, 15:30 UTCJul 20, 15:45 UTC15m
2026-07-20 JNA713 - Jul 20, 14:05 UTCJul 20, 14:50 UTC45m
2026-07-20 JNA569 PUS → CJU Jul 20, 10:45 UTCJul 20, 10:55 UTC10m
2026-07-20 JNA566 CJU → PUS Jul 20, 09:35 UTCJul 20, 09:50 UTC15m
2026-07-20 JNA511 - Jul 20, 07:10 UTCJul 20, 07:45 UTC35m
2026-07-20 JNA508 - Jul 20, 05:15 UTCJul 20, 06:00 UTC45m
2026-07-20 JNA471 - Jul 20, 02:55 UTCJul 20, 03:30 UTC35m
2026-07-20 JNA472 - Jul 20, 00:55 UTCJul 20, 01:30 UTC35m
2026-07-19 JNA563 - Jul 19, 23:05 UTCJul 19, 23:20 UTC15m
2026-07-19 JNA922 PUS → PUS Jul 19, 11:40 UTCJul 19, 21:05 UTC9h 25m
2026-07-19 JNA224 - Jul 19, 08:25 UTCJul 19, 10:00 UTC1h 35m
2026-07-19 JNA223 PUS → NRT Jul 19, 05:15 UTCJul 19, 06:55 UTC1h 40m
2026-07-19 JNA252 KIX → PUS Jul 19, 02:00 UTCJul 19, 03:00 UTC1h 0m

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 HL8246 page for operator, model, and routing details .

Mode-S 71C246 frequently asked

What is Mode-S code 71C246?
71C246 is an ICAO 24-bit transponder address. Allocated to Korea, South. Assigned to HL8246.
Where is Mode-S 71C246 registered?
Mode-S code 71C246 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 71C246 broadcasting right now?
No active broadcast right now. Last signal was 1d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 71C246, octal 34341106, decimal 7,455,302.
What flights does 71C246 operate?
Mode-S 71C246 has broadcast 20 distinct callsigns, including JNA224, JNA223, JNA713, JNA511, JNA021.