Apparatus

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sensors Mode-S transponder

71C247

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

Currently assigned to HL8247 · BOEING 737-800

Hex
71C247
Octal
34341107
Decimal
7,455,303
Country
KR
Tail
HL8247
Type
B738
No current signal · last broadcast Jul 26, 21:10 UTC
Flights observed
439
Distinct callsigns
20
Country
KR
Last broadcast
Jul 26, 21:10 UTC

Last known position

Most recent position reported by Mode-S 71C247.

Country allocation

The ICAO 24-bit address 71C247 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
JNA713 - 17 2026-07-19
JNA714 - 15 2026-07-19
JNA659 Jin Air 9 2026-07-24
JNA472 Jin Air 9 2026-07-23
JNA471 Jin Air 8 2026-07-23
JNA508 Jin Air 7 2026-07-23
JNA224 Jin Air 7 2026-07-26
JNA223 Jin Air 7 2026-07-26
JNA660 - 6 2026-07-18
JNA515 - 6 2026-07-23
JNA502 Jin Air 6 2026-07-19
JNA468 Jin Air 6 2026-07-24
JNA256 - 6 2026-06-26
JNA742 - 5 2026-06-30
JNA741 Jin Air 5 2026-07-22
JNA671 Jin Air 5 2026-07-18
JNA516 - 5 2026-07-23
JNA512 Jin Air 5 2026-07-23
JNA509 Jin Air 5 2026-07-19
JNA506 - 5 2026-07-19

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 JNA922 GUM → PUS Jul 26, 11:55 UTCJul 26, 21:05 UTC9h 10m
2026-07-26 JNA224 NRT → PUS Jul 26, 08:25 UTCJul 26, 10:05 UTC1h 40m
2026-07-26 JNA223 PUS → NRT Jul 26, 05:05 UTCJul 26, 06:50 UTC1h 46m
2026-07-26 JNA222 NRT → PUS Jul 26, 02:10 UTCJul 26, 03:55 UTC1h 45m
2026-07-25 JNA201 ICN → NRT Jul 25, 22:45 UTCJul 26, 00:40 UTC1h 55m
2026-07-25 JNA916 GUM → ICN Jul 25, 09:30 UTCJul 25, 19:20 UTC9h 50m
2026-07-25 JNA206 NRT → ICN Jul 25, 05:00 UTCJul 25, 06:55 UTC1h 55m
2026-07-25 JNA205 ICN → NRT Jul 25, 01:25 UTCJul 25, 03:35 UTC2h 10m
2026-07-24 JNA032 CEB → ICN Jul 24, 13:15 UTCJul 24, 22:20 UTC9h 5m
2026-07-24 JNA570 CJU → PUS Jul 24, 11:00 UTCJul 24, 11:30 UTC30m
2026-07-24 JNA467 KUV → CJU Jul 24, 08:45 UTCJul 24, 08:55 UTC10m
2026-07-24 JNA468 CJU → KUV Jul 24, 07:15 UTCJul 24, 07:25 UTC10m
2026-07-24 JNA437 KPO → CJU Jul 24, 05:15 UTCJul 24, 05:35 UTC20m
2026-07-24 JNA436 CJU → KPO Jul 24, 03:50 UTCJul 24, 04:00 UTC10m
2026-07-24 JNA435 KPO → CJU Jul 24, 01:50 UTCJul 24, 02:00 UTC10m
2026-07-24 JNA659 GMP → KPO Jul 24, 00:10 UTCJul 24, 00:35 UTC25m
2026-07-23 JNA512 CJU → GMP Jul 23, 12:45 UTCJul 23, 13:30 UTC45m
2026-07-23 JNA515 - Jul 23, 10:40 UTCJul 23, 11:15 UTC35m
2026-07-23 JNA516 - Jul 23, 09:00 UTCJul 23, 09:40 UTC40m
2026-07-23 JNA511 GMP → CJU Jul 23, 06:40 UTCJul 23, 07:15 UTC35m
2026-07-23 JNA508 CJU → GMP Jul 23, 04:45 UTCJul 23, 05:25 UTC40m
2026-07-23 JNA471 WJU → CJU Jul 23, 02:25 UTCJul 23, 02:55 UTC30m
2026-07-23 JNA472 CJU → WJU Jul 23, 00:25 UTCJul 23, 01:00 UTC35m
2026-07-22 JNA561 PUS → CJU Jul 22, 22:40 UTCJul 22, 22:50 UTC10m
2026-07-22 JNA922 GUM → PUS Jul 22, 12:15 UTCJul 22, 21:15 UTC9h 0m
2026-07-22 JNA741 PUS → RMQ Jul 22, 04:45 UTCJul 22, 05:10 UTC25m
2026-07-22 JNA252 KIX → PUS Jul 22, 02:00 UTCJul 22, 03:05 UTC1h 5m
2026-07-21 JNA231 - Jul 21, 23:05 UTCJul 22, 00:25 UTC1h 20m
2026-07-21 JNA916 GUM → ICN Jul 21, 09:35 UTCJul 21, 19:00 UTC9h 25m
2026-07-21 JNA206 NRT → ICN Jul 21, 05:20 UTCJul 21, 07:20 UTC2h 0m
2026-07-21 JNA205 ICN → NRT Jul 21, 01:20 UTCJul 21, 03:25 UTC2h 5m
2026-07-20 JNA032 PUS → ICN Jul 20, 13:15 UTCJul 20, 23:05 UTC9h 50m
2026-07-20 JNA570 CJU → PUS Jul 20, 11:00 UTCJul 20, 11:20 UTC20m
2026-07-20 JNA467 - Jul 20, 08:50 UTCJul 20, 09:05 UTC15m
2026-07-20 JNA468 CJU → KUV Jul 20, 07:25 UTCJul 20, 07:35 UTC10m
2026-07-20 JNA437 KPO → CJU Jul 20, 05:30 UTCJul 20, 05:45 UTC15m
2026-07-20 JNA436 - Jul 20, 04:10 UTCJul 20, 04:25 UTC15m
2026-07-20 JNA435 KPO → CJU Jul 20, 02:05 UTCJul 20, 02:25 UTC20m
2026-07-20 JNA659 GMP → KPO Jul 20, 00:25 UTCJul 20, 01:00 UTC35m
2026-07-19 JNA502 CJU → GMP Jul 19, 22:50 UTCJul 19, 23:25 UTC35m
2026-07-19 JNA714 - Jul 19, 18:25 UTCJul 19, 19:55 UTC1h 30m
2026-07-19 JNA713 - Jul 19, 14:10 UTCJul 19, 16:00 UTC1h 50m
2026-07-19 JNA569 PUS → CJU Jul 19, 11:20 UTCJul 19, 11:30 UTC10m
2026-07-19 JNA566 CJU → PUS Jul 19, 09:55 UTCJul 19, 10:15 UTC20m
2026-07-19 JNA453 - Jul 19, 07:45 UTCJul 19, 07:55 UTC10m
2026-07-19 JNA454 - Jul 19, 06:35 UTCJul 19, 06:45 UTC10m
2026-07-19 JNA509 GMP → CJU Jul 19, 04:20 UTCJul 19, 04:55 UTC35m
2026-07-19 JNA506 - Jul 19, 02:25 UTCJul 19, 03:10 UTC45m
2026-07-18 JNA671 GMP → RSU Jul 18, 22:55 UTCJul 18, 23:25 UTC30m
2026-07-18 JNA660 - Jul 18, 11:10 UTCJul 18, 11:35 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 HL8247 page for operator, model, and routing details .

Mode-S 71C247 frequently asked

What is Mode-S code 71C247?
71C247 is an ICAO 24-bit transponder address. Allocated to Korea, South. Assigned to HL8247.
Where is Mode-S 71C247 registered?
Mode-S code 71C247 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 71C247 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 21:10 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 71C247, octal 34341107, decimal 7,455,303.
What flights does 71C247 operate?
Mode-S 71C247 has broadcast 20 distinct callsigns, including JNA713, JNA714, JNA659, JNA472, JNA471.