Apparatus

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sensors Mode-S transponder

71BF43

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

Currently assigned to HL7743 · BOEING 777-200

Hex
71BF43
Octal
34337503
Decimal
7,454,531
Country
KR
Tail
HL7743
Type
B772
Broadcasting now · callsign JNA302 · 2,925 ft
Flights observed
374
Distinct callsigns
20
Country
KR
Last broadcast
Jul 26, 13:00 UTC

Current position

71BF43 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 71BF43 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
JNA733 Jin Air 34 2026-07-25
JNA272 - 32 2026-07-25
JNA271 Jin Air 32 2026-07-25
JNA734 Jin Air 28 2026-07-25
JNA342 Jin Air 27 2026-07-25
JNA204 Jin Air 24 2026-07-26
JNA203 Jin Air 24 2026-07-25
JNA341 Jin Air 21 2026-07-25
JNA302 Jin Air 19 2026-07-24
JNA301 Jin Air 19 2026-07-23
JNA212 - 16 2026-07-10
JNA211 - 16 2026-07-10
JNA209 Jin Air 14 2026-06-01
JNA242 Jin Air 13 2026-06-01
JNA241 Jin Air 13 2026-05-31
JNA210 Jin Air 13 2026-06-01
JNA240 - 11 2026-07-24
JNA239 Jin Air 10 2026-07-24
JNA304 Jin Air 4 2026-07-26
JNA303 Jin Air 4 2026-07-26

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 JNA304 CTS → ICN Jul 26, 10:50 UTCJul 26, 13:00 UTC2h 10m
2026-07-26 JNA303 ICN → CTS Jul 26, 06:55 UTCJul 26, 09:05 UTC2h 10m
2026-07-26 JNA204 NRT → ICN Jul 26, 03:10 UTCJul 26, 05:05 UTC1h 55m
2026-07-25 JNA203 ICN → NRT Jul 25, 23:20 UTCJul 26, 01:10 UTC1h 50m
2026-07-25 JNA734 TPE → ICN Jul 25, 17:40 UTCJul 25, 19:40 UTC2h 0m
2026-07-25 JNA733 ICN → TPE Jul 25, 15:50 UTCJul 25, 16:15 UTC25m
2026-07-25 JNA733 ICN → TPE Jul 25, 14:20 UTCJul 25, 15:00 UTC40m
2026-07-25 JNA272 - Jul 25, 11:05 UTCJul 25, 12:00 UTC55m
2026-07-25 JNA271 ICN → FUK Jul 25, 08:25 UTCJul 25, 09:25 UTC1h 0m
2026-07-25 JNA342 OKA → ICN Jul 25, 04:50 UTCJul 25, 06:40 UTC1h 50m
2026-07-25 JNA341 ICN → OKA Jul 25, 01:15 UTCJul 25, 02:55 UTC1h 40m
2026-07-24 JNA240 - Jul 24, 10:40 UTCJul 24, 12:05 UTC1h 25m
2026-07-24 JNA239 ICN → KIX Jul 24, 07:50 UTCJul 24, 09:15 UTC1h 25m
2026-07-24 JNA302 CTS → ICN Jul 24, 03:30 UTCJul 24, 05:50 UTC2h 20m
2026-07-23 JNA301 ICN → CTS Jul 23, 23:40 UTCJul 24, 02:00 UTC2h 20m
2026-07-23 JNA304 - Jul 23, 10:35 UTCJul 23, 12:55 UTC2h 20m
2026-07-23 JNA303 - Jul 23, 06:45 UTCJul 23, 08:55 UTC2h 10m
2026-07-22 JNA240 NRT → ICN Jul 22, 04:20 UTCJul 22, 12:25 UTC8h 5m
2026-07-21 JNA203 ICN → NRT Jul 21, 23:15 UTCJul 22, 01:05 UTC1h 50m
2026-07-21 JNA240 KIX → ICN Jul 21, 10:40 UTCJul 21, 12:00 UTC1h 20m
2026-07-21 JNA239 - Jul 21, 07:50 UTCJul 21, 09:20 UTC1h 30m
2026-07-21 JNA204 NRT → ICN Jul 21, 04:25 UTCJul 21, 06:10 UTC1h 45m
2026-07-20 JNA203 ICN → NRT Jul 20, 23:30 UTCJul 21, 01:15 UTC1h 44m
2026-07-20 JNA240 KIX → ICN Jul 20, 10:55 UTCJul 20, 12:15 UTC1h 20m
2026-07-20 JNA239 ICN → KIX Jul 20, 08:10 UTCJul 20, 09:40 UTC1h 30m
2026-07-20 JNA302 - Jul 20, 03:55 UTCJul 20, 06:25 UTC2h 30m
2026-07-19 JNA301 ICN → CTS Jul 19, 23:45 UTCJul 20, 01:55 UTC2h 10m
2026-07-19 JNA304 - Jul 19, 10:40 UTCJul 19, 12:55 UTC2h 15m
2026-07-19 JNA303 - Jul 19, 06:45 UTCJul 19, 09:00 UTC2h 15m
2026-07-19 JNA204 - Jul 19, 02:55 UTCJul 19, 04:45 UTC1h 50m
2026-07-18 JNA203 ICN → NRT Jul 18, 23:20 UTCJul 19, 01:10 UTC1h 50m
2026-07-18 JNA734 TPE → ICN Jul 18, 17:55 UTCJul 18, 19:50 UTC1h 55m
2026-07-18 JNA733 ICN → TPE Jul 18, 15:40 UTCJul 18, 15:55 UTC15m
2026-07-18 JNA733 ICN → TPE Jul 18, 14:05 UTCJul 18, 14:50 UTC45m
2026-07-18 JNA240 KIX → ICN Jul 18, 10:35 UTCJul 18, 11:50 UTC1h 15m
2026-07-18 JNA239 ICN → KIX Jul 18, 07:35 UTCJul 18, 09:10 UTC1h 35m
2026-07-18 JNA302 - Jul 18, 03:25 UTCJul 18, 05:45 UTC2h 20m
2026-07-17 JNA301 ICN → CTS Jul 17, 23:39 UTCJul 18, 02:00 UTC2h 20m
2026-07-17 JNA304 - Jul 17, 10:35 UTCJul 17, 12:55 UTC2h 20m
2026-07-17 JNA303 - Jul 17, 06:45 UTCJul 17, 08:59 UTC2h 15m
2026-07-17 JNA204 - Jul 17, 02:54 UTCJul 17, 04:49 UTC1h 55m
2026-07-16 JNA203 ICN → NRT Jul 16, 23:10 UTCJul 17, 01:09 UTC2h 0m
2026-07-16 JNA734 TPE → ICN Jul 16, 17:45 UTCJul 16, 19:45 UTC2h 0m
2026-07-16 JNA733 ICN → TPE Jul 16, 15:45 UTCJul 16, 16:05 UTC20m
2026-07-16 JNA733 ICN → TPE Jul 16, 14:10 UTCJul 16, 14:50 UTC40m
2026-07-16 JNA240 KIX → ICN Jul 16, 10:29 UTCJul 16, 11:45 UTC1h 15m
2026-07-16 JNA239 ICN → KIX Jul 16, 07:35 UTCJul 16, 09:00 UTC1h 25m
2026-07-15 JNA302 - Jul 15, 03:45 UTCJul 15, 06:00 UTC2h 15m
2026-07-15 JNA301 ICN → CTS Jul 15, 00:00 UTCJul 15, 02:15 UTC2h 15m
2026-07-14 JNA734 TPE → ICN Jul 14, 17:50 UTCJul 14, 19:50 UTC2h 0m

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 HL7743 page for operator, model, and routing details .

Mode-S 71BF43 frequently asked

What is Mode-S code 71BF43?
71BF43 is an ICAO 24-bit transponder address. Allocated to Korea, South. Assigned to HL7743.
Where is Mode-S 71BF43 registered?
Mode-S code 71BF43 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 71BF43 broadcasting right now?
Yes. Mode-S 71BF43 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 71BF43, octal 34337503, decimal 7,454,531.
What flights does 71BF43 operate?
Mode-S 71BF43 has broadcast 20 distinct callsigns, including JNA733, JNA272, JNA271, JNA734, JNA342.