Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

71BF08

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

Currently assigned to HL7708 · BOEING 737-900

Hex
71BF08
Octal
34337410
Decimal
7,454,472
Country
KR
Tail
HL7708
Type
B739
No current signal · last broadcast Jul 26, 12:40 UTC
Flights observed
413
Distinct callsigns
20
Country
KR
Last broadcast
Jul 26, 12:40 UTC

Last known position

Most recent position reported by Mode-S 71BF08.

Country allocation

The ICAO 24-bit address 71BF08 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
KAL1409 - 24 2026-07-20
KAL1404 - 24 2026-07-19
KAL2062 - 14 2026-07-16
KAL2061 - 14 2026-07-16
KAL1294 Korean Air 14 2026-07-26
KAL1227 Korean Air 14 2026-07-26
KAL1264 - 12 2026-07-23
KAL1118 - 12 2026-07-12
KAL1238 Korean Air 11 2026-07-26
KAL1073 - 11 2026-07-13
KAL1023 Korean Air 11 2026-07-24
KAL843 - 10 2026-07-20
KAL1195 - 10 2026-07-18
KAL1165 Korean Air 10 2026-07-26
KAL1326 - 9 2026-07-18
KAL1178 Korean Air 9 2026-07-26
KAL1114 Korean Air 9 2026-07-25
KAL1107 Korean Air 9 2026-07-26
KAL1049 Korean Air 9 2026-07-26
KAL844 Korean Air 8 2026-07-20

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 KAL1227 GMP → CJU Jul 26, 12:05 UTCJul 26, 12:40 UTC35m
2026-07-26 KAL1294 CJU → GMP Jul 26, 10:20 UTCJul 26, 10:55 UTC35m
2026-07-26 KAL1165 GMP → CJU Jul 26, 08:05 UTCJul 26, 08:40 UTC35m
2026-07-26 KAL1238 CJU → GMP Jul 26, 06:20 UTCJul 26, 07:00 UTC41m
2026-07-26 KAL1107 GMP → CJU Jul 26, 04:20 UTCJul 26, 04:50 UTC30m
2026-07-26 KAL1178 CJU → GMP Jul 26, 02:25 UTCJul 26, 03:05 UTC40m
2026-07-26 KAL1049 GMP → CJU Jul 26, 00:15 UTCJul 26, 00:50 UTC35m
2026-07-25 KAL1114 CJU → GMP Jul 25, 22:15 UTCJul 25, 22:55 UTC40m
2026-07-25 KAL1227 GMP → CJU Jul 25, 11:40 UTCJul 25, 12:15 UTC35m
2026-07-25 KAL1294 CJU → GMP Jul 25, 09:35 UTCJul 25, 10:15 UTC40m
2026-07-25 KAL1569 TAE → CJU Jul 25, 02:20 UTCJul 25, 02:35 UTC15m
2026-07-25 KAL1570 CJU → TAE Jul 25, 00:55 UTCJul 25, 01:10 UTC15m
2026-07-24 KAL1023 GMP → CJU Jul 24, 22:40 UTCJul 24, 23:15 UTC35m
2026-07-24 KAL1294 - Jul 24, 09:40 UTCJul 24, 10:20 UTC40m
2026-07-24 KAL1081 GMP → CJU Jul 24, 02:30 UTCJul 24, 03:00 UTC30m
2026-07-24 KAL1150 CJU → GMP Jul 24, 00:35 UTCJul 24, 01:20 UTC45m
2026-07-23 KAL1017 - Jul 23, 22:25 UTCJul 23, 23:00 UTC35m
2026-07-23 KAL1328 CJU → GMP Jul 23, 12:00 UTCJul 23, 12:45 UTC45m
2026-07-23 KAL1205 - Jul 23, 10:00 UTCJul 23, 10:35 UTC35m
2026-07-23 KAL1264 - Jul 23, 07:55 UTCJul 23, 08:35 UTC40m
2026-07-23 KAL1141 - Jul 23, 05:40 UTCJul 23, 06:10 UTC30m
2026-07-23 KAL1206 CJU → GMP Jul 23, 03:55 UTCJul 23, 04:35 UTC40m
2026-07-23 KAL1517 PUS → CJU Jul 23, 01:55 UTCJul 23, 02:05 UTC10m
2026-07-23 KAL1512 - Jul 23, 00:30 UTCJul 23, 00:50 UTC20m
2026-07-22 KAL1505 - Jul 22, 22:20 UTCJul 22, 22:35 UTC15m
2026-07-22 KAL2072 PVG → PUS Jul 22, 04:20 UTCJul 22, 04:40 UTC20m
2026-07-22 KAL2071 - Jul 22, 00:00 UTCJul 22, 00:20 UTC20m
2026-07-21 KAL2072 - Jul 21, 04:30 UTCJul 21, 04:45 UTC15m
2026-07-20 KAL2071 - Jul 20, 23:45 UTCJul 21, 00:05 UTC20m
2026-07-20 KAL1409 ICN → PUS Jul 20, 11:10 UTCJul 20, 11:50 UTC40m
2026-07-20 KAL844 TAO → ICN Jul 20, 08:35 UTCJul 20, 09:00 UTC25m
2026-07-20 KAL843 - Jul 20, 04:50 UTCJul 20, 05:10 UTC20m
2026-07-19 KAL1404 PUS → ICN Jul 19, 23:15 UTCJul 19, 23:55 UTC40m
2026-07-19 KAL1558 - Jul 19, 12:00 UTCJul 19, 12:25 UTC25m
2026-07-19 KAL1575 - Jul 19, 09:55 UTCJul 19, 10:10 UTC15m
2026-07-19 KAL1576 - Jul 19, 08:05 UTCJul 19, 08:30 UTC25m
2026-07-19 KAL1613 KWJ → CJU Jul 19, 05:55 UTCJul 19, 06:05 UTC10m
2026-07-19 KAL1612 - Jul 19, 04:45 UTCJul 19, 04:55 UTC10m
2026-07-19 KAL1569 - Jul 19, 02:30 UTCJul 19, 02:45 UTC15m
2026-07-19 KAL1570 - Jul 19, 01:00 UTCJul 19, 01:25 UTC25m
2026-07-18 KAL1023 - Jul 18, 22:35 UTCJul 18, 23:10 UTC35m
2026-07-18 KAL1326 - Jul 18, 11:45 UTCJul 18, 12:15 UTC30m
2026-07-18 KAL1195 - Jul 18, 09:25 UTCJul 18, 10:00 UTC35m
2026-07-18 KAL1264 - Jul 18, 07:45 UTCJul 18, 08:30 UTC45m
2026-07-18 KAL1141 - Jul 18, 05:40 UTCJul 18, 06:15 UTC35m
2026-07-18 KAL1206 - Jul 18, 03:50 UTCJul 18, 04:30 UTC40m
2026-07-18 KAL1517 - Jul 18, 01:39 UTCJul 18, 01:54 UTC15m
2026-07-18 KAL1512 - Jul 18, 00:25 UTCJul 18, 00:39 UTC15m
2026-07-17 KAL1505 - Jul 17, 22:05 UTCJul 17, 22:15 UTC10m
2026-07-17 KAL1409 - Jul 17, 11:00 UTCJul 17, 12:00 UTC1h 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 HL7708 page for operator, model, and routing details .

Mode-S 71BF08 frequently asked

What is Mode-S code 71BF08?
71BF08 is an ICAO 24-bit transponder address. Allocated to Korea, South. Assigned to HL7708.
Where is Mode-S 71BF08 registered?
Mode-S code 71BF08 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 71BF08 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 12:40 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 71BF08, octal 34337410, decimal 7,454,472.
What flights does 71BF08 operate?
Mode-S 71BF08 has broadcast 20 distinct callsigns, including KAL1409, KAL1404, KAL2062, KAL2061, KAL1294.