Apparatus

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sensors Mode-S transponder

71BF19

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

Currently assigned to HL7719 · BOEING 737-900

Hex
71BF19
Octal
34337431
Decimal
7,454,489
Country
KR
Tail
HL7719
Type
B739
No current signal · last broadcast 16h ago
Flights observed
269
Distinct callsigns
20
Country
KR
Last broadcast
16h ago

Last known position

Most recent position reported by Mode-S 71BF19.

Country allocation

The ICAO 24-bit address 71BF19 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
JNA408 Jin Air 17 2026-05-26
JNA407 Jin Air 17 2026-05-26
JNA404 Jin Air 17 2026-05-27
JNA403 Jin Air 17 2026-05-27
JNA409 Jin Air 16 2026-05-13
JNA514 Jin Air 15 2026-05-28
JNA410 Jin Air 15 2026-05-13
JNA507 Jin Air 14 2026-05-29
JNA405 Jin Air 14 2026-05-29
JNA406 Jin Air 13 2026-05-29
JNA764 Jin Air 11 2026-05-14
JNA763 Jin Air 11 2026-05-14
JNA504 Jin Air 11 2026-05-28
JNA503 Jin Air 11 2026-05-28
JNA465 Jin Air 8 2026-05-09
JNA452 Jin Air 8 2026-05-13
JNA451 Jin Air 8 2026-05-14
JNA466 Jin Air 6 2026-05-08
JNA455 Jin Air 6 2026-05-06
JNA429 Jin Air 6 2026-05-29

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-29 JNA429 TAE → CJU May 29, 09:05 UTCMay 29, 09:15 UTC10m
2026-05-29 JNA405 CJJ → CJU May 29, 05:30 UTCMay 29, 05:50 UTC20m
2026-05-29 JNA406 CJU → CJJ May 29, 04:00 UTCMay 29, 04:25 UTC25m
2026-05-29 JNA507 GMP → CJU May 29, 01:50 UTCMay 29, 02:15 UTC25m
2026-05-28 JNA504 CJU → GMP May 28, 23:55 UTCMay 29, 00:25 UTC30m
2026-05-28 JNA503 GMP → CJU May 28, 21:45 UTCMay 28, 22:10 UTC25m
2026-05-28 JNA514 CJU → GMP May 28, 13:05 UTCMay 28, 13:35 UTC30m
2026-05-28 JNA429 TAE → CJU May 28, 09:15 UTCMay 28, 09:25 UTC10m
2026-05-28 JNA405 CJJ → CJU May 28, 05:30 UTCMay 28, 05:50 UTC20m
2026-05-28 JNA406 CJU → CJJ May 28, 04:05 UTCMay 28, 04:25 UTC20m
2026-05-28 JNA507 GMP → CJU May 28, 01:50 UTCMay 28, 02:15 UTC25m
2026-05-28 JNA504 CJU → GMP May 28, 00:00 UTCMay 28, 00:30 UTC30m
2026-05-27 JNA503 GMP → CJU May 27, 21:45 UTCMay 27, 22:10 UTC25m
2026-05-27 JNA692F GMP → ICN May 27, 13:00 UTCMay 27, 13:30 UTC30m
2026-05-27 JNA403 CJJ → CJU May 27, 03:59 UTCMay 27, 04:19 UTC20m
2026-05-27 JNA404 CJU → CJJ May 27, 02:29 UTCMay 27, 02:49 UTC20m
2026-05-27 JNA413 CJJ → CJU May 27, 00:10 UTCMay 27, 00:25 UTC15m
2026-05-26 JNA414 CJU → CJJ May 26, 22:39 UTCMay 26, 23:05 UTC25m
2026-05-26 JNA407 CJJ → CJU May 26, 07:45 UTCMay 26, 08:04 UTC20m
2026-05-26 JNA408 CJU → CJJ May 26, 06:04 UTCMay 26, 06:29 UTC25m
2026-05-26 JNA403 CJJ → CJU May 26, 04:10 UTCMay 26, 04:24 UTC15m
2026-05-26 JNA404 CJU → CJJ May 26, 02:44 UTCMay 26, 03:09 UTC25m
2026-05-25 JNA407 CJJ → CJU May 25, 07:30 UTCMay 25, 07:50 UTC20m
2026-05-25 JNA408 CJU → CJJ May 25, 05:55 UTCMay 25, 06:20 UTC25m
2026-05-25 JNA403 CJJ → CJU May 25, 03:55 UTCMay 25, 04:10 UTC15m
2026-05-25 JNA404 CJU → CJJ May 25, 02:25 UTCMay 25, 02:50 UTC25m
2026-05-24 JNA407 CJJ → CJU May 24, 07:45 UTCMay 24, 08:00 UTC15m
2026-05-24 JNA408 CJU → CJJ May 24, 06:10 UTCMay 24, 06:30 UTC20m
2026-05-24 JNA403 CJJ → CJU May 24, 03:55 UTCMay 24, 04:15 UTC20m
2026-05-24 JNA404 CJU → CJJ May 24, 02:20 UTCMay 24, 02:40 UTC20m
2026-05-23 JNA407 CJJ → CJU May 23, 07:45 UTCMay 23, 08:05 UTC20m
2026-05-23 JNA408 CJU → CJJ May 23, 06:05 UTCMay 23, 06:30 UTC25m
2026-05-23 JNA403 CJJ → CJU May 23, 04:00 UTCMay 23, 04:20 UTC20m
2026-05-23 JNA404 CJU → CJJ May 23, 02:15 UTCMay 23, 02:40 UTC24m
2026-05-22 JNA430 CJU → TAE May 22, 08:35 UTCMay 22, 08:45 UTC10m
2026-05-22 JNA405 CJJ → CJU May 22, 05:55 UTCMay 22, 06:15 UTC20m
2026-05-22 JNA406 CJU → CJJ May 22, 04:10 UTCMay 22, 04:40 UTC30m
2026-05-22 JNA507 GMP → CJU May 22, 01:50 UTCMay 22, 02:10 UTC20m
2026-05-22 JNA504 CJU → GMP May 22, 00:05 UTCMay 22, 00:40 UTC35m
2026-05-21 JNA503 GMP → CJU May 21, 21:50 UTCMay 21, 22:15 UTC25m
2026-05-21 JNA514 CJU → GMP May 21, 12:50 UTCMay 21, 13:20 UTC30m
2026-05-21 JNA407 CJJ → CJU May 21, 07:35 UTCMay 21, 07:50 UTC15m
2026-05-21 JNA408 CJU → CJJ May 21, 06:00 UTCMay 21, 06:20 UTC20m
2026-05-21 JNA403 CJJ → CJU May 21, 03:50 UTCMay 21, 04:05 UTC15m
2026-05-21 JNA404 CJU → CJJ May 21, 02:15 UTCMay 21, 02:40 UTC25m
2026-05-20 JNA430 CJU → TAE May 20, 08:10 UTCMay 20, 08:20 UTC10m
2026-05-20 JNA405 CJJ → CJU May 20, 05:35 UTCMay 20, 06:00 UTC25m
2026-05-20 JNA406 CJU → CJJ May 20, 04:05 UTCMay 20, 04:30 UTC25m
2026-05-20 JNA507 GMP → CJU May 20, 01:45 UTCMay 20, 02:10 UTC25m
2026-05-20 JNA504 CJU → GMP May 20, 00:05 UTCMay 20, 00:40 UTC35m

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 HL7719 page for operator, model, and routing details .

Mode-S 71BF19 frequently asked

What is Mode-S code 71BF19?
71BF19 is an ICAO 24-bit transponder address. Allocated to Korea, South. Assigned to HL7719.
Where is Mode-S 71BF19 registered?
Mode-S code 71BF19 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 71BF19 broadcasting right now?
No active broadcast right now. Last signal was 16h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 71BF19, octal 34337431, decimal 7,454,489.
What flights does 71BF19 operate?
Mode-S 71BF19 has broadcast 20 distinct callsigns, including JNA408, JNA407, JNA404, JNA403, JNA409.