Apparatus

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sensors Mode-S transponder

71BF34

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

Currently assigned to HL7734 · BOEING 777-200

Hex
71BF34
Octal
34337464
Decimal
7,454,516
Country
KR
Tail
HL7734
Type
B772
No current signal · last broadcast 4h ago
Flights observed
205
Distinct callsigns
14
Country
KR
Last broadcast
4h ago

Last known position

Most recent position reported by Mode-S 71BF34.

Country allocation

The ICAO 24-bit address 71BF34 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
JNA733 Jin Air 20 2026-05-24
JNA272 Jin Air 20 2026-05-29
JNA271 Jin Air 20 2026-05-29
JNA342 Jin Air 19 2026-05-25
JNA203 Jin Air 18 2026-05-28
JNA734 Jin Air 17 2026-05-24
JNA341 Jin Air 17 2026-05-18
JNA204 Jin Air 17 2026-05-29
JNA209 Jin Air 14 2026-05-26
JNA210 Jin Air 12 2026-05-26
JNA242 Jin Air 8 2026-05-30
JNA241 Jin Air 8 2026-05-29
JNA212 Jin Air 8 2026-05-22
JNA211 Jin Air 7 2026-05-22

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-30 JNA242 KIX → ICN May 30, 02:30 UTCMay 30, 04:00 UTC1h 30m
2026-05-29 JNA241 ICN → KIX May 29, 23:35 UTCMay 30, 00:50 UTC1h 15m
2026-05-29 JNA272 FUK → ICN May 29, 11:00 UTCMay 29, 12:05 UTC1h 5m
2026-05-29 JNA271 ICN → FUK May 29, 08:25 UTCMay 29, 08:55 UTC30m
2026-05-29 JNA204 NRT → ICN May 29, 03:55 UTCMay 29, 06:00 UTC2h 5m
2026-05-28 JNA203 ICN → NRT May 28, 23:30 UTCMay 29, 01:15 UTC1h 45m
2026-05-26 JNA210 NRT → ICN May 26, 09:45 UTCMay 26, 11:44 UTC2h 0m
2026-05-26 JNA209 ICN → NRT May 26, 06:29 UTCMay 26, 08:30 UTC2h 0m
2026-05-25 JNA272 FUK → ICN May 25, 11:10 UTCMay 25, 12:05 UTC55m
2026-05-25 JNA271 ICN → FUK May 25, 08:35 UTCMay 25, 09:05 UTC30m
2026-05-25 JNA342 OKA → ICN May 25, 06:15 UTCMay 25, 06:45 UTC30m
2026-05-24 JNA734 TPE → ICN May 24, 17:40 UTCMay 24, 19:45 UTC2h 5m
2026-05-24 JNA733 ICN → TPE May 24, 13:55 UTCMay 24, 16:05 UTC2h 10m
2026-05-24 JNA210 NRT → ICN May 24, 09:45 UTCMay 24, 11:45 UTC2h 0m
2026-05-24 JNA209 ICN → NRT May 24, 06:25 UTCMay 24, 08:00 UTC1h 35m
2026-05-24 JNA242 KIX → ICN May 24, 02:30 UTCMay 24, 03:50 UTC1h 20m
2026-05-23 JNA241 ICN → KIX May 23, 23:30 UTCMay 24, 00:50 UTC1h 20m
2026-05-23 JNA272 FUK → ICN May 23, 11:05 UTCMay 23, 12:00 UTC55m
2026-05-23 JNA271 ICN → FUK May 23, 08:35 UTCMay 23, 09:00 UTC25m
2026-05-23 JNA342 OKA → ICN May 23, 01:20 UTCMay 23, 06:50 UTC5h 29m
2026-05-22 JNA212 NRT → ICN May 22, 10:55 UTCMay 22, 12:45 UTC1h 50m
2026-05-22 JNA211 ICN → NRT May 22, 06:55 UTCMay 22, 08:55 UTC2h 0m
2026-05-22 JNA204 NRT → ICN May 22, 03:05 UTCMay 22, 05:05 UTC2h 0m
2026-05-21 JNA203 ICN → NRT May 21, 23:20 UTCMay 22, 01:15 UTC1h 55m
2026-05-21 JNA734 TPE → ICN May 21, 17:45 UTCMay 21, 19:40 UTC1h 55m
2026-05-21 JNA733 ICN → TPE May 21, 15:45 UTCMay 21, 16:15 UTC30m
2026-05-21 JNA733 ICN → TPE May 21, 14:10 UTCMay 21, 14:35 UTC25m
2026-05-21 JNA272 FUK → ICN May 21, 11:10 UTCMay 21, 12:10 UTC1h 0m
2026-05-21 JNA271 ICN → FUK May 21, 08:25 UTCMay 21, 09:25 UTC1h 0m
2026-05-21 JNA204 NRT → ICN May 21, 03:20 UTCMay 21, 05:30 UTC2h 10m
2026-05-20 JNA203 ICN → NRT May 20, 23:20 UTCMay 21, 01:10 UTC1h 50m
2026-05-20 JNA734 TPE → ICN May 20, 17:45 UTCMay 20, 19:40 UTC1h 55m
2026-05-20 JNA733 ICN → TPE May 20, 13:55 UTCMay 20, 16:00 UTC2h 5m
2026-05-19 JNA734 TPE → ICN May 19, 17:40 UTCMay 19, 19:45 UTC2h 5m
2026-05-19 JNA733 ICN → TPE May 19, 14:00 UTCMay 19, 16:00 UTC2h 0m
2026-05-18 JNA272 FUK → ICN May 18, 10:55 UTCMay 18, 11:55 UTC1h 0m
2026-05-18 JNA271 ICN → FUK May 18, 08:20 UTCMay 18, 08:50 UTC30m
2026-05-18 JNA342 OKA → ICN May 18, 04:40 UTCMay 18, 06:20 UTC1h 40m
2026-05-18 JNA341 ICN → OKA May 18, 01:05 UTCMay 18, 02:35 UTC1h 30m
2026-05-17 JNA734 TPE → ICN May 17, 17:35 UTCMay 17, 19:35 UTC2h 0m
2026-05-17 JNA733 ICN → TPE May 17, 13:55 UTCMay 17, 15:55 UTC2h 0m
2026-05-17 JNA210 NRT → ICN May 17, 09:40 UTCMay 17, 11:30 UTC1h 50m
2026-05-17 JNA209 ICN → NRT May 17, 06:10 UTCMay 17, 08:10 UTC2h 0m
2026-05-16 JNA272 FUK → ICN May 16, 11:05 UTCMay 16, 12:01 UTC55m
2026-05-16 JNA271 ICN → FUK May 16, 08:20 UTCMay 16, 08:51 UTC30m
2026-05-16 JNA204 NRT → ICN May 16, 03:05 UTCMay 16, 04:45 UTC1h 40m
2026-05-15 JNA203 ICN → NRT May 15, 23:20 UTCMay 16, 01:20 UTC2h 0m
2026-05-15 JNA272 FUK → ICN May 15, 11:15 UTCMay 15, 12:15 UTC1h 0m
2026-05-15 JNA271 ICN → FUK May 15, 08:30 UTCMay 15, 09:00 UTC30m
2026-05-15 JNA204 NRT → ICN May 15, 03:00 UTCMay 15, 04:40 UTC1h 40m

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 HL7734 page for operator, model, and routing details .

Mode-S 71BF34 frequently asked

What is Mode-S code 71BF34?
71BF34 is an ICAO 24-bit transponder address. Allocated to Korea, South. Assigned to HL7734.
Where is Mode-S 71BF34 registered?
Mode-S code 71BF34 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 71BF34 broadcasting right now?
No active broadcast right now. Last signal was 4h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 71BF34, octal 34337464, decimal 7,454,516.
What flights does 71BF34 operate?
Mode-S 71BF34 has broadcast 14 distinct callsigns, including JNA733, JNA272, JNA271, JNA342, JNA203.