Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

71C353

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

Currently assigned to HL8353 · BOEING 737 MAX 8

Hex
71C353
Octal
34341523
Decimal
7,455,571
Country
KR
Tail
HL8353
Type
B38M
No current signal · last broadcast 8h ago
Flights observed
319
Distinct callsigns
20
Country
KR
Last broadcast
8h ago

Last known position

Most recent position reported by Mode-S 71C353.

Country allocation

The ICAO 24-bit address 71C353 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
JNA044 - 13 2026-07-12
JNA350 - 12 2026-07-12
JNA345 - 11 2026-06-11
JNA262 - 11 2026-07-10
JNA261 - 11 2026-07-09
JNA736 - 10 2026-07-14
JNA735 - 10 2026-07-13
JNA349 - 10 2026-07-12
JNA362 - 9 2026-07-13
JNA263 Jin Air 9 2026-05-26
JNA347 - 8 2026-07-14
JNA346 Jin Air 8 2026-06-12
JNA264 Jin Air 8 2026-05-26
JNA091 - 8 2026-07-13
JNA088 Jin Air 8 2026-05-30
JNA361 Jin Air 7 2026-06-08
JNA360 Jin Air 7 2026-06-13
JNA358 - 7 2026-07-11
JNA348 - 7 2026-07-14
JNA274 Jin Air 7 2026-06-01

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 JNA348 - Jul 14, 10:20 UTCJul 14, 11:50 UTC1h 30m
2026-07-14 JNA347 - Jul 14, 07:25 UTCJul 14, 08:45 UTC1h 20m
2026-07-14 JNA736 - Jul 14, 03:05 UTCJul 14, 05:15 UTC2h 10m
2026-07-13 JNA735 - Jul 13, 23:20 UTCJul 14, 01:30 UTC2h 10m
2026-07-13 JNA091 - Jul 13, 08:40 UTCJul 13, 20:15 UTC11h 35m
2026-07-13 JNA362 - Jul 13, 00:40 UTCJul 13, 06:20 UTC5h 40m
2026-07-12 JNA044 ICN → ICN Jul 12, 12:20 UTCJul 12, 22:10 UTC9h 50m
2026-07-12 JNA350 - Jul 12, 09:35 UTCJul 12, 10:25 UTC50m
2026-07-12 JNA349 - Jul 12, 07:05 UTCJul 12, 07:55 UTC50m
2026-07-11 JNA358 - Jul 11, 23:45 UTCJul 12, 05:25 UTC5h 40m
2026-07-11 JNA348 - Jul 11, 10:25 UTCJul 11, 11:50 UTC1h 25m
2026-07-11 JNA347 - Jul 11, 07:25 UTCJul 11, 08:45 UTC1h 20m
2026-07-10 JNA031 ICN → ICN Jul 10, 13:25 UTCJul 10, 23:20 UTC9h 55m
2026-07-10 JNA210 - Jul 10, 09:40 UTCJul 10, 11:40 UTC2h 0m
2026-07-10 JNA209 ICN → NRT Jul 10, 06:05 UTCJul 10, 08:00 UTC1h 55m
2026-07-10 JNA262 - Jul 10, 01:20 UTCJul 10, 02:25 UTC1h 5m
2026-07-09 JNA261 - Jul 9, 22:25 UTCJul 9, 23:10 UTC45m
2026-07-09 JNA240 KIX → ICN Jul 9, 10:30 UTCJul 9, 12:00 UTC1h 30m
2026-07-09 JNA239 - Jul 9, 07:35 UTCJul 9, 09:00 UTC1h 25m
2026-07-09 JNA357 - Jul 9, 00:00 UTCJul 9, 05:30 UTC5h 30m
2026-07-08 JNA348 - Jul 8, 10:30 UTCJul 8, 12:00 UTC1h 30m
2026-07-08 JNA347 - Jul 8, 07:25 UTCJul 8, 08:50 UTC1h 25m
2026-07-07 JNA358 - Jul 7, 23:35 UTCJul 8, 05:50 UTC6h 15m
2026-07-07 JNA092 ICN → ICN Jul 7, 08:20 UTCJul 7, 20:30 UTC12h 10m
2026-07-07 JNA342 - Jul 7, 05:45 UTCJul 7, 06:30 UTC45m
2026-07-07 JNA342 - Jul 7, 04:40 UTCJul 7, 04:50 UTC10m
2026-07-07 JNA341 - Jul 7, 01:15 UTCJul 7, 03:00 UTC1h 45m
2026-07-06 JNA044 - Jul 6, 12:15 UTCJul 6, 22:15 UTC10h 0m
2026-07-06 JNA350 - Jul 6, 09:30 UTCJul 6, 10:30 UTC1h 0m
2026-07-06 JNA349 - Jul 6, 07:05 UTCJul 6, 07:50 UTC45m
2026-07-06 JNA736 - Jul 6, 03:05 UTCJul 6, 05:20 UTC2h 15m
2026-07-05 JNA735 ICN → RMQ Jul 5, 23:25 UTCJul 6, 01:35 UTC2h 10m
2026-07-05 JNA350 - Jul 5, 09:45 UTCJul 5, 10:45 UTC1h 0m
2026-07-05 JNA349 - Jul 5, 07:20 UTCJul 5, 08:10 UTC50m
2026-07-05 JNA736 - Jul 5, 02:55 UTCJul 5, 05:15 UTC2h 20m
2026-07-04 LJ735 - Jul 4, 23:20 UTCJul 5, 01:30 UTC2h 10m
2026-07-04 JNA238 KIX → ICN Jul 4, 08:45 UTCJul 4, 10:10 UTC1h 25m
2026-07-04 JNA237 - Jul 4, 06:10 UTCJul 4, 07:30 UTC1h 20m
2026-07-04 JNA242 KIX → ICN Jul 4, 02:40 UTCJul 4, 04:10 UTC1h 30m
2026-07-04 JNA241 - Jul 4, 00:05 UTCJul 4, 01:30 UTC1h 25m
2026-07-03 JNA091 - Jul 3, 08:35 UTCJul 3, 20:40 UTC12h 5m
2026-07-03 JNA362 - Jul 3, 00:50 UTCJul 3, 06:25 UTC5h 35m
2026-07-02 JNA210 - Jul 2, 11:20 UTCJul 2, 11:45 UTC25m
2026-07-02 JNA210 - Jul 2, 09:45 UTCJul 2, 10:50 UTC1h 5m
2026-07-02 JNA209 - Jul 2, 06:15 UTCJul 2, 08:05 UTC1h 50m
2026-07-01 JNA272 - Jul 1, 10:55 UTCJul 1, 11:55 UTC1h 0m
2026-07-01 JNA271 - Jul 1, 08:25 UTCJul 1, 09:05 UTC40m
2026-07-01 JNA692F GMP → ICN Jul 1, 05:10 UTCJul 1, 05:30 UTC20m
2026-06-13 JNA691F - Jun 13, 11:00 UTCJun 13, 11:15 UTC15m
2026-06-13 JNA360 TAK → ICN Jun 13, 08:25 UTCJun 13, 09:35 UTC1h 10m

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 HL8353 page for operator, model, and routing details .

Mode-S 71C353 frequently asked

What is Mode-S code 71C353?
71C353 is an ICAO 24-bit transponder address. Allocated to Korea, South. Assigned to HL8353.
Where is Mode-S 71C353 registered?
Mode-S code 71C353 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 71C353 broadcasting right now?
No active broadcast right now. Last signal was 8h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 71C353, octal 34341523, decimal 7,455,571.
What flights does 71C353 operate?
Mode-S 71C353 has broadcast 20 distinct callsigns, including JNA044, JNA350, JNA345, JNA262, JNA261.