Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

71C245

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

Currently assigned to HL8245 · BOEING 737-800

Hex
71C245
Octal
34341105
Decimal
7,455,301
Country
KR
Tail
HL8245
Type
B738
Broadcasting now · callsign JNA252 · 3,900 ft
Flights observed
404
Distinct callsigns
20
Country
KR
Last broadcast
1h ago

Current position

71C245 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 71C245 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
JNA671 - 10 2026-07-03
JNA509 - 10 2026-07-04
JNA506 - 10 2026-07-04
JNA201 Jin Air 9 2026-06-23
JNA752 - 7 2026-07-06
JNA672 - 7 2026-07-04
JNA236 - 7 2026-07-12
JNA231 - 7 2026-07-13
JNA224 - 7 2026-06-25
JNA222 - 7 2026-06-24
JNA751 - 6 2026-07-06
JNA660 - 6 2026-06-15
JNA252 - 6 2026-07-08
JNA223 - 6 2026-06-25
JNA221 - 6 2026-07-06
JNA202 - 6 2026-07-07
JNA713 - 5 2026-07-09
JNA516 Jin Air 5 2026-06-04
JNA508 Jin Air 5 2026-06-04
JNA472 - 5 2026-06-29

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-13 JNA231 ICN → KIX Jul 13, 23:05 UTCJul 14, 00:20 UTC1h 15m
2026-07-13 JNA738 RMQ → ICN Jul 13, 09:50 UTCJul 13, 12:05 UTC2h 15m
2026-07-13 JNA737 - Jul 13, 06:05 UTCJul 13, 08:35 UTC2h 30m
2026-07-12 JNA132 BKI → ICN Jul 12, 16:55 UTCJul 12, 21:55 UTC5h 0m
2026-07-12 JNA131 - Jul 12, 10:40 UTCJul 12, 15:20 UTC4h 40m
2026-07-12 JNA236 KIX → ICN Jul 12, 07:20 UTCJul 12, 08:40 UTC1h 20m
2026-07-12 JNA251 PUS → KIX Jul 12, 04:50 UTCJul 12, 05:50 UTC1h 0m
2026-07-12 JNA376 - Jul 12, 02:10 UTCJul 12, 03:20 UTC1h 10m
2026-07-11 JNA375 - Jul 11, 23:40 UTCJul 12, 00:50 UTC1h 10m
2026-07-11 JNA022 - Jul 11, 19:40 UTCJul 11, 22:30 UTC2h 50m
2026-07-11 JNA022 - Jul 11, 17:30 UTCJul 11, 17:40 UTC10m
2026-07-11 JNA021 - Jul 11, 15:25 UTCJul 11, 15:50 UTC25m
2026-07-11 JNA021 - Jul 11, 10:50 UTCJul 11, 13:25 UTC2h 35m
2026-07-11 JNA564 - Jul 11, 08:45 UTCJul 11, 09:00 UTC15m
2026-07-11 JNA567 - Jul 11, 06:15 UTCJul 11, 06:25 UTC10m
2026-07-11 JNA562 - Jul 11, 04:40 UTCJul 11, 04:55 UTC15m
2026-07-11 JNA463 - Jul 11, 02:25 UTCJul 11, 02:35 UTC10m
2026-07-11 JNA464 - Jul 11, 00:45 UTCJul 11, 01:00 UTC15m
2026-07-10 JNA505 - Jul 10, 22:45 UTCJul 10, 23:15 UTC30m
2026-07-10 JNA654 - Jul 10, 10:05 UTCJul 10, 10:40 UTC35m
2026-07-10 JNA653 - Jul 10, 08:10 UTCJul 10, 08:45 UTC35m
2026-07-10 JNA656 - Jul 10, 06:30 UTCJul 10, 07:05 UTC35m
2026-07-10 JNA655 - Jul 10, 04:35 UTCJul 10, 05:05 UTC30m
2026-07-10 JNA652 - Jul 10, 02:30 UTCJul 10, 03:15 UTC45m
2026-07-10 JNA651 - Jul 10, 00:35 UTCJul 10, 01:05 UTC30m
2026-07-09 JNA502 - Jul 9, 22:40 UTCJul 9, 23:20 UTC40m
2026-07-09 JNA714 - Jul 9, 18:20 UTCJul 9, 19:40 UTC1h 20m
2026-07-09 JNA713 - Jul 9, 14:15 UTCJul 9, 15:40 UTC1h 25m
2026-07-09 JNA569 - Jul 9, 10:20 UTCJul 9, 10:35 UTC15m
2026-07-09 JNA566 - Jul 9, 09:00 UTCJul 9, 09:15 UTC15m
2026-07-09 JNA427 - Jul 9, 06:55 UTCJul 9, 07:15 UTC20m
2026-07-09 JNA428 - Jul 9, 05:15 UTCJul 9, 05:40 UTC25m
2026-07-09 JNA401 - Jul 9, 02:50 UTCJul 9, 03:25 UTC35m
2026-07-09 JNA402 - Jul 9, 00:45 UTCJul 9, 01:20 UTC35m
2026-07-08 JNA563 - Jul 8, 23:05 UTCJul 8, 23:20 UTC15m
2026-07-08 JNA922 PUS → PUS Jul 8, 12:30 UTCJul 8, 21:30 UTC9h 0m
2026-07-08 JNA742 - Jul 8, 09:40 UTCJul 8, 10:05 UTC25m
2026-07-08 JNA742 - Jul 8, 08:15 UTCJul 8, 08:40 UTC25m
2026-07-08 JNA741 - Jul 8, 04:55 UTCJul 8, 06:50 UTC1h 55m
2026-07-08 JNA252 - Jul 8, 01:50 UTCJul 8, 02:55 UTC1h 5m
2026-07-07 JNA231 ICN → CTS Jul 7, 23:00 UTCJul 8, 00:20 UTC1h 20m
2026-07-07 JNA240 KIX → ICN Jul 7, 10:25 UTCJul 7, 11:50 UTC1h 25m
2026-07-07 JNA239 ICN → KIX Jul 7, 07:25 UTCJul 7, 08:55 UTC1h 30m
2026-07-07 JNA202 - Jul 7, 02:25 UTCJul 7, 04:25 UTC2h 0m
2026-07-06 JNA221 PUS → NRT Jul 6, 23:20 UTCJul 7, 01:00 UTC1h 40m
2026-07-06 JNA752 TPE → PUS Jul 6, 18:55 UTCJul 6, 21:10 UTC2h 15m
2026-07-06 JNA751 PUS → TPE Jul 6, 13:15 UTCJul 6, 15:10 UTC1h 55m
2026-07-06 JNA312 - Jul 6, 08:50 UTCJul 6, 10:55 UTC2h 5m
2026-07-06 JNA311 - Jul 6, 05:35 UTCJul 6, 07:35 UTC2h 0m
2026-07-06 JNA292 - Jul 6, 02:15 UTCJul 6, 02:55 UTC40m

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 HL8245 page for operator, model, and routing details .

Mode-S 71C245 frequently asked

What is Mode-S code 71C245?
71C245 is an ICAO 24-bit transponder address. Allocated to Korea, South. Assigned to HL8245.
Where is Mode-S 71C245 registered?
Mode-S code 71C245 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 71C245 broadcasting right now?
Yes. Mode-S 71C245 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 71C245, octal 34341105, decimal 7,455,301.
What flights does 71C245 operate?
Mode-S 71C245 has broadcast 20 distinct callsigns, including JNA671, JNA509, JNA506, JNA201, JNA752.