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 JNA341 · 38,000 ft
Flights observed
200
Distinct callsigns
14
Country
KR
Last broadcast
12h ago

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 14 distinct

Callsign Airline Flights Last seen
JNA204 Jin Air 18 2026-05-28
JNA342 Jin Air 17 2026-05-27
JNA272 Jin Air 17 2026-05-28
JNA271 Jin Air 17 2026-05-27
JNA203 Jin Air 17 2026-05-27
JNA733 Jin Air 16 2026-05-23
JNA341 Jin Air 14 2026-05-26
JNA734 Jin Air 13 2026-05-23
JNA209 Jin Air 13 2026-05-23
JNA242 Jin Air 12 2026-05-29
JNA241 Jin Air 12 2026-05-28
JNA210 Jin Air 12 2026-05-23
JNA212 Jin Air 11 2026-05-29
JNA211 Jin Air 11 2026-05-29

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-29 JNA212 NRT → ICN May 29, 10:40 UTCMay 29, 12:55 UTC2h 15m
2026-05-29 JNA211 ICN → NRT May 29, 06:50 UTCMay 29, 08:35 UTC1h 45m
2026-05-29 JNA242 KIX → ICN May 29, 02:25 UTCMay 29, 03:50 UTC1h 25m
2026-05-28 JNA241 ICN → KIX May 28, 23:35 UTCMay 29, 00:50 UTC1h 15m
2026-05-28 JNA272 FUK → ICN May 28, 08:15 UTCMay 28, 12:15 UTC4h 0m
2026-05-28 JNA204 NRT → ICN May 28, 03:00 UTCMay 28, 05:00 UTC2h 0m
2026-05-27 JNA203 ICN → NRT May 27, 23:20 UTCMay 28, 01:05 UTC1h 45m
2026-05-27 JNA272 FUK → ICN May 27, 10:55 UTCMay 27, 11:50 UTC55m
2026-05-27 JNA271 ICN → FUK May 27, 08:15 UTCMay 27, 08:45 UTC30m
2026-05-27 JNA342 OKA → ICN May 27, 01:09 UTCMay 27, 06:34 UTC5h 25m
2026-05-26 JNA341 ICN → OKA May 26, 01:05 UTCMay 26, 06:10 UTC5h 5m
2026-05-25 JNA212 NRT → ICN May 25, 10:30 UTCMay 25, 12:25 UTC1h 55m
2026-05-25 JNA211 ICN → NRT May 25, 06:55 UTCMay 25, 08:45 UTC1h 50m
2026-05-25 JNA204 NRT → ICN May 25, 02:55 UTCMay 25, 04:50 UTC1h 55m
2026-05-24 JNA203 ICN → NRT May 24, 23:40 UTCMay 24, 23:46 UTC6m
2026-05-24 JNA272 FUK → ICN May 24, 11:05 UTCMay 24, 12:05 UTC1h 0m
2026-05-24 JNA271 ICN → FUK May 24, 08:25 UTCMay 24, 08:55 UTC30m
2026-05-24 JNA342 OKA → ICN May 24, 01:15 UTCMay 24, 06:50 UTC5h 35m
2026-05-23 JNA734 TPE → ICN May 23, 17:30 UTCMay 23, 19:30 UTC2h 0m
2026-05-23 JNA733 ICN → TPE May 23, 14:00 UTCMay 23, 16:00 UTC2h 0m
2026-05-23 JNA210 NRT → ICN May 23, 09:45 UTCMay 23, 11:45 UTC2h 0m
2026-05-23 JNA209 ICN → NRT May 23, 06:10 UTCMay 23, 08:00 UTC1h 50m
2026-05-23 JNA242 KIX → ICN May 23, 02:30 UTCMay 23, 03:50 UTC1h 20m
2026-05-22 JNA241 ICN → KIX May 22, 23:50 UTCMay 23, 01:10 UTC1h 20m
2026-05-22 JNA272 FUK → ICN May 22, 11:35 UTCMay 22, 12:25 UTC50m
2026-05-22 JNA271 ICN → FUK May 22, 08:50 UTCMay 22, 09:20 UTC30m
2026-05-22 JNA342 OKA → ICN May 22, 01:10 UTCMay 22, 07:15 UTC6h 5m
2026-05-21 JNA342 OKA → ICN May 21, 01:10 UTCMay 21, 06:50 UTC5h 40m
2026-05-20 JNA272 FUK → ICN May 20, 11:10 UTCMay 20, 12:10 UTC1h 0m
2026-05-20 JNA271 ICN → FUK May 20, 08:25 UTCMay 20, 08:50 UTC25m
2026-05-20 JNA342 OKA → ICN May 20, 05:55 UTCMay 20, 06:35 UTC40m
2026-05-20 JNA342 OKA → ICN May 20, 04:40 UTCMay 20, 05:05 UTC25m
2026-05-20 JNA341 ICN → OKA May 20, 01:10 UTCMay 20, 02:50 UTC1h 40m
2026-05-19 JNA272 FUK → ICN May 19, 11:05 UTCMay 19, 12:05 UTC1h 0m
2026-05-19 JNA271 ICN → FUK May 19, 08:20 UTCMay 19, 08:50 UTC30m
2026-05-19 JNA204 NRT → ICN May 19, 03:05 UTCMay 19, 04:50 UTC1h 45m
2026-05-18 JNA203 ICN → NRT May 18, 23:20 UTCMay 19, 01:15 UTC1h 55m
2026-05-18 JNA734 TPE → ICN May 18, 17:45 UTCMay 18, 19:45 UTC1h 59m
2026-05-18 JNA733 ICN → TPE May 18, 14:05 UTCMay 18, 16:00 UTC1h 55m
2026-05-17 JNA212 NRT → ICN May 17, 10:30 UTCMay 17, 12:20 UTC1h 50m
2026-05-17 JNA211 ICN → NRT May 17, 06:50 UTCMay 17, 08:50 UTC2h 0m
2026-05-17 JNA242 KIX → ICN May 17, 02:25 UTCMay 17, 03:35 UTC1h 10m
2026-05-16 JNA241 ICN → KIX May 16, 23:35 UTCMay 17, 00:50 UTC1h 15m
2026-05-16 JNA212 NRT → ICN May 16, 10:31 UTCMay 16, 12:21 UTC1h 50m
2026-05-16 JNA211 ICN → NRT May 16, 07:11 UTCMay 16, 09:16 UTC2h 5m
2026-05-16 JNA242 KIX → ICN May 16, 02:35 UTCMay 16, 03:50 UTC1h 15m
2026-05-15 JNA241 ICN → KIX May 15, 23:40 UTCMay 16, 01:00 UTC1h 20m
2026-05-15 JNA342 OKA → ICN May 15, 04:55 UTCMay 15, 06:35 UTC1h 40m
2026-05-15 JNA341 ICN → OKA May 15, 01:10 UTCMay 15, 02:50 UTC1h 40m
2026-05-14 JNA342 OKA → ICN May 14, 04:50 UTCMay 14, 06:35 UTC1h 45m

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 14 distinct callsigns, including JNA204, JNA342, JNA272, JNA271, JNA203.