Apparatus

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sensors Mode-S transponder

71C242

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

Currently assigned to HL8242 · BOEING 737-800

Hex
71C242
Octal
34341102
Decimal
7,455,298
Country
KR
Tail
HL8242
Type
B738
Broadcasting now · callsign JNA224 · 32,000 ft
Flights observed
536
Distinct callsigns
20
Country
KR
Last broadcast
Jul 26, 22:15 UTC

Current position

71C242 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 71C242 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
JNA752 Jin Air 12 2026-07-21
JNA751 Jin Air 10 2026-07-21
JNA713 - 10 2026-07-17
JNA672 Jin Air 10 2026-07-23
JNA737 - 8 2026-07-06
JNA502 Jin Air 8 2026-07-23
JNA501 Jin Air 8 2026-07-22
JNA254 - 8 2026-07-08
JNA201 - 8 2026-07-19
JNA714 - 7 2026-07-17
JNA513 Jin Air 7 2026-07-23
JNA253 - 7 2026-07-08
JNA222 Jin Air 7 2026-07-20
JNA221 - 7 2026-07-13
JNA202 - 7 2026-07-14
JNA038 - 7 2026-07-09
JNA763 - 6 2026-07-12
JNA738 - 6 2026-07-06
JNA659 - 6 2026-07-12
JNA471 Jin Air 6 2026-07-22

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 JNA112 DAD → PUS Jul 26, 21:55 UTCJul 26, 22:10 UTC15m
2026-07-26 JNA111 PUS → DAD Jul 26, 12:40 UTCJul 26, 20:40 UTC8h 0m
2026-07-26 JNA568 CJU → PUS Jul 26, 10:55 UTCJul 26, 11:10 UTC15m
2026-07-26 JNA473 WJU → CJU Jul 26, 08:40 UTCJul 26, 09:15 UTC35m
2026-07-26 JNA474 CJU → WJU Jul 26, 07:00 UTCJul 26, 07:30 UTC30m
2026-07-26 JNA565 PUS → CJU Jul 26, 04:55 UTCJul 26, 05:10 UTC15m
2026-07-26 JNA256 KIX → PUS Jul 26, 02:15 UTCJul 26, 03:15 UTC1h 0m
2026-07-25 JNA255 PUS → KIX Jul 25, 23:45 UTCJul 26, 00:50 UTC1h 5m
2026-07-25 JNA022 BKK → PUS Jul 25, 17:50 UTCJul 25, 22:35 UTC4h 45m
2026-07-25 JNA021 PUS → BKK Jul 25, 11:00 UTCJul 25, 16:10 UTC5h 10m
2026-07-25 JNA564 CJU → PUS Jul 25, 08:20 UTCJul 25, 08:35 UTC15m
2026-07-25 JNA567 - Jul 25, 06:10 UTCJul 25, 06:25 UTC15m
2026-07-25 JNA562 CJU → PUS Jul 25, 04:35 UTCJul 25, 04:50 UTC15m
2026-07-25 JNA463 KUV → CJU Jul 25, 02:30 UTCJul 25, 02:40 UTC10m
2026-07-25 JNA464 CJU → KUV Jul 25, 01:00 UTCJul 25, 01:15 UTC15m
2026-07-24 JNA505 GMP → CJU Jul 24, 22:45 UTCJul 24, 23:15 UTC30m
2026-07-24 JNA654 HIN → GMP Jul 24, 09:55 UTCJul 24, 10:30 UTC35m
2026-07-24 JNA653 GMP → HIN Jul 24, 08:05 UTCJul 24, 08:35 UTC30m
2026-07-24 JNA656 USN → GMP Jul 24, 06:30 UTCJul 24, 07:00 UTC30m
2026-07-24 JNA655 GMP → USN Jul 24, 04:40 UTCJul 24, 05:10 UTC30m
2026-07-24 JNA652 HIN → GMP Jul 24, 02:35 UTCJul 24, 03:15 UTC40m
2026-07-24 JNA651 GMP → HIN Jul 24, 00:45 UTCJul 24, 01:15 UTC30m
2026-07-23 JNA502 CJU → GMP Jul 23, 22:45 UTCJul 23, 23:25 UTC40m
2026-07-23 JNA823 - Jul 23, 13:10 UTCJul 23, 20:10 UTC7h 0m
2026-07-23 JNA513 GMP → CJU Jul 23, 10:15 UTCJul 23, 10:50 UTC35m
2026-07-23 JNA672 RSU → GMP Jul 23, 08:15 UTCJul 23, 08:55 UTC40m
2026-07-23 JNA425 TAE → CJU Jul 23, 05:00 UTCJul 23, 05:15 UTC15m
2026-07-23 JNA426 CJU → TAE Jul 23, 03:30 UTCJul 23, 03:50 UTC20m
2026-07-23 JNA421 TAE → CJU Jul 23, 01:35 UTCJul 23, 01:50 UTC15m
2026-07-22 JNA422 CJU → TAE Jul 22, 23:50 UTCJul 23, 00:05 UTC15m
2026-07-22 JNA501 GMP → CJU Jul 22, 21:35 UTCJul 22, 22:10 UTC35m
2026-07-22 JNA510 - Jul 22, 13:00 UTCJul 22, 13:40 UTC40m
2026-07-22 JNA515 - Jul 22, 11:15 UTCJul 22, 11:25 UTC10m
2026-07-22 JNA508 - Jul 22, 04:40 UTCJul 22, 05:20 UTC40m
2026-07-22 JNA471 WJU → CJU Jul 22, 02:30 UTCJul 22, 03:15 UTC45m
2026-07-22 JNA472 CJU → WJU Jul 22, 00:35 UTCJul 22, 01:10 UTC35m
2026-07-21 JNA561 PUS → CJU Jul 21, 22:50 UTCJul 21, 23:00 UTC10m
2026-07-21 JNA752 TPE → PUS Jul 21, 20:30 UTCJul 21, 21:15 UTC45m
2026-07-21 JNA752 TPE → PUS Jul 21, 19:00 UTCJul 21, 19:15 UTC15m
2026-07-21 JNA751 PUS → TPE Jul 21, 15:00 UTCJul 21, 15:15 UTC15m
2026-07-21 JNA751 PUS → TPE Jul 21, 13:20 UTCJul 21, 13:45 UTC25m
2026-07-21 JNA564 CJU → PUS Jul 21, 08:30 UTCJul 21, 08:50 UTC20m
2026-07-21 JNA567 - Jul 21, 06:25 UTCJul 21, 06:40 UTC15m
2026-07-21 JNA562 CJU → PUS Jul 21, 04:30 UTCJul 21, 04:50 UTC20m
2026-07-21 JNA463 KUV → CJU Jul 21, 02:20 UTCJul 21, 02:35 UTC15m
2026-07-21 JNA464 CJU → KUV Jul 21, 00:50 UTCJul 21, 01:05 UTC15m
2026-07-20 JNA563 - Jul 20, 22:55 UTCJul 20, 23:10 UTC15m
2026-07-20 JNA752 TPE → PUS Jul 20, 19:00 UTCJul 20, 21:20 UTC2h 20m
2026-07-20 JNA751 PUS → TPE Jul 20, 13:30 UTCJul 20, 15:20 UTC1h 50m
2026-07-20 JNA312 - Jul 20, 08:30 UTCJul 20, 10:35 UTC2h 5m

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 HL8242 page for operator, model, and routing details .

Mode-S 71C242 frequently asked

What is Mode-S code 71C242?
71C242 is an ICAO 24-bit transponder address. Allocated to Korea, South. Assigned to HL8242.
Where is Mode-S 71C242 registered?
Mode-S code 71C242 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 71C242 broadcasting right now?
Yes. Mode-S 71C242 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 71C242, octal 34341102, decimal 7,455,298.
What flights does 71C242 operate?
Mode-S 71C242 has broadcast 20 distinct callsigns, including JNA752, JNA751, JNA713, JNA672, JNA737.