Apparatus

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sensors Mode-S transponder

71C243

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

Currently assigned to HL8243 · BOEING 737-800

Hex
71C243
Octal
34341103
Decimal
7,455,299
Country
KR
Tail
HL8243
Type
B738
Broadcasting now · callsign JNA922 · 150 ft
Flights observed
500
Distinct callsigns
20
Country
KR
Last broadcast
Jul 26, 22:45 UTC

Current position

71C243 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 71C243 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
JNA236 Jin Air 16 2026-07-20
JNA256 Jin Air 13 2026-07-24
JNA037 - 11 2026-07-11
JNA742 Jin Air 10 2026-07-24
JNA255 Jin Air 9 2026-07-24
JNA251 Jin Air 9 2026-07-20
JNA752 - 8 2026-07-02
JNA234 Jin Air 8 2026-07-21
JNA201 Jin Air 8 2026-07-01
JNA022 - 8 2026-07-15
JNA401 - 7 2026-07-15
JNA371 - 7 2026-07-18
JNA222 - 7 2026-07-02
JNA751 - 6 2026-07-02
JNA741 Jin Air 6 2026-07-24
JNA738 Jin Air 6 2026-06-05
JNA737 Jin Air 6 2026-06-05
JNA713 - 6 2026-07-03
JNA402 - 6 2026-07-15
JNA273 Jin Air 6 2026-06-09

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 JNA032 CEB → ICN Jul 26, 13:15 UTCJul 26, 22:45 UTC9h 30m
2026-07-26 JNA570 CJU → PUS Jul 26, 11:30 UTCJul 26, 11:55 UTC25m
2026-07-26 JNA467 KUV → CJU Jul 26, 09:40 UTCJul 26, 09:55 UTC15m
2026-07-26 JNA468 CJU → KUV Jul 26, 08:10 UTCJul 26, 08:30 UTC20m
2026-07-26 JNA437 KPO → CJU Jul 26, 05:50 UTCJul 26, 06:05 UTC15m
2026-07-26 JNA436 CJU → KPO Jul 26, 04:25 UTCJul 26, 04:35 UTC10m
2026-07-26 JNA435 KPO → CJU Jul 26, 02:20 UTCJul 26, 02:35 UTC15m
2026-07-26 JNA659 GMP → KPO Jul 26, 00:20 UTCJul 26, 00:45 UTC25m
2026-07-25 JNA512 CJU → GMP Jul 25, 12:50 UTCJul 25, 13:35 UTC45m
2026-07-25 JNA515 GMP → CJU Jul 25, 10:35 UTCJul 25, 11:20 UTC45m
2026-07-25 JNA516 CJU → GMP Jul 25, 08:45 UTCJul 25, 09:30 UTC45m
2026-07-25 JNA511 GMP → CJU Jul 25, 06:45 UTCJul 25, 07:20 UTC35m
2026-07-25 JNA508 CJU → GMP Jul 25, 04:40 UTCJul 25, 05:25 UTC45m
2026-07-25 JNA471 WJU → CJU Jul 25, 02:25 UTCJul 25, 03:00 UTC35m
2026-07-25 JNA472 CJU → WJU Jul 25, 00:35 UTCJul 25, 01:15 UTC40m
2026-07-24 JNA561 PUS → CJU Jul 24, 22:40 UTCJul 24, 22:55 UTC15m
2026-07-24 JNA922 GUM → PUS Jul 24, 12:10 UTCJul 24, 21:10 UTC9h 0m
2026-07-24 JNA742 RMQ → PUS Jul 24, 09:55 UTCJul 24, 10:20 UTC25m
2026-07-24 JNA742 RMQ → PUS Jul 24, 08:25 UTCJul 24, 08:50 UTC25m
2026-07-24 JNA741 PUS → RMQ Jul 24, 05:10 UTCJul 24, 07:05 UTC1h 55m
2026-07-24 JNA256 KIX → PUS Jul 24, 02:45 UTCJul 24, 03:55 UTC1h 10m
2026-07-24 JNA255 PUS → KIX Jul 24, 00:25 UTCJul 24, 01:25 UTC1h 0m
2026-07-23 JNA112 DAD → PUS Jul 23, 22:20 UTCJul 23, 23:00 UTC40m
2026-07-23 JNA111 PUS → DAD Jul 23, 14:30 UTCJul 23, 21:20 UTC6h 50m
2026-07-23 JNA111 PUS → DAD Jul 23, 13:00 UTCJul 23, 13:15 UTC15m
2026-07-23 JNA312 - Jul 23, 08:20 UTCJul 23, 10:20 UTC2h 0m
2026-07-23 JNA311 PUS → CTS Jul 23, 05:05 UTCJul 23, 07:10 UTC2h 5m
2026-07-23 JNA256 KIX → PUS Jul 23, 02:05 UTCJul 23, 03:10 UTC1h 5m
2026-07-22 JNA255 PUS → KIX Jul 22, 23:50 UTCJul 23, 00:55 UTC1h 5m
2026-07-22 JNA112 DAD → PUS Jul 22, 22:15 UTCJul 22, 22:35 UTC20m
2026-07-22 JNA111 PUS → DAD Jul 22, 13:00 UTCJul 22, 21:10 UTC8h 10m
2026-07-22 JNA223 PUS → NRT Jul 22, 05:15 UTCJul 22, 05:25 UTC10m
2026-07-22 JNA376 NGO → PUS Jul 22, 02:20 UTCJul 22, 03:30 UTC1h 10m
2026-07-21 JNA375 PUS → NGO Jul 21, 23:50 UTCJul 22, 00:45 UTC55m
2026-07-21 JNA062 - Jul 21, 13:05 UTCJul 21, 22:10 UTC9h 5m
2026-07-21 JNA234 KIX → ICN Jul 21, 05:35 UTCJul 21, 06:55 UTC1h 20m
2026-07-21 JNA233 ICN → KIX Jul 21, 01:30 UTCJul 21, 02:55 UTC1h 25m
2026-07-20 JNA002 - Jul 20, 18:40 UTCJul 20, 23:50 UTC5h 10m
2026-07-20 JNA001 - Jul 20, 11:30 UTCJul 20, 16:35 UTC5h 5m
2026-07-20 JNA236 KIX → ICN Jul 20, 07:35 UTCJul 20, 08:55 UTC1h 20m
2026-07-20 JNA251 PUS → KIX Jul 20, 04:40 UTCJul 20, 05:50 UTC1h 10m
2026-07-20 JNA292 - Jul 20, 02:15 UTCJul 20, 02:55 UTC40m
2026-07-20 JNA291 PUS → FUK Jul 20, 00:40 UTCJul 20, 01:05 UTC25m
2026-07-19 JNA120 - Jul 19, 22:35 UTCJul 19, 22:55 UTC20m
2026-07-19 JNA119 - Jul 19, 11:30 UTCJul 19, 21:30 UTC10h 0m
2026-07-19 JNA254 KIX → PUS Jul 19, 08:50 UTCJul 19, 09:50 UTC1h 0m
2026-07-19 JNA253 PUS → KIX Jul 19, 06:15 UTCJul 19, 07:30 UTC1h 15m
2026-07-19 JNA372 - Jul 19, 02:20 UTCJul 19, 03:40 UTC1h 20m
2026-07-18 JNA371 - Jul 18, 23:25 UTCJul 19, 00:55 UTC1h 30m
2026-07-18 JNA116 - Jul 18, 21:45 UTCJul 18, 22:10 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 HL8243 page for operator, model, and routing details .

Mode-S 71C243 frequently asked

What is Mode-S code 71C243?
71C243 is an ICAO 24-bit transponder address. Allocated to Korea, South. Assigned to HL8243.
Where is Mode-S 71C243 registered?
Mode-S code 71C243 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 71C243 broadcasting right now?
Yes. Mode-S 71C243 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 71C243, octal 34341103, decimal 7,455,299.
What flights does 71C243 operate?
Mode-S 71C243 has broadcast 20 distinct callsigns, including JNA236, JNA256, JNA037, JNA742, JNA255.