Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

71BD85

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

Currently assigned to HL7585 · AIRBUS A-330-300

Hex
71BD85
Octal
34336605
Decimal
7,454,085
Country
KR
Tail
HL7585
Type
A333
No current signal · last broadcast 3h ago
Flights observed
85
Distinct callsigns
19
Country
KR
Last broadcast
3h ago

Last known position

Most recent position reported by Mode-S 71BD85.

Country allocation

The ICAO 24-bit address 71BD85 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 19 distinct

Callsign Airline Flights Last seen
KAL836 Korean Air 22 2026-05-30
KAL835 Korean Air 14 2026-05-30
KAL864 Korean Air 7 2026-05-28
KAL863 Korean Air 7 2026-05-28
KAL458 Korean Air 7 2026-05-06
KAL843 Korean Air 3 2026-05-28
KAL744 Korean Air 3 2026-05-28
KAL743 Korean Air 3 2026-05-27
KAL457 Korean Air 3 2026-05-04
KAL844 Korean Air 2 2026-05-28
KAL2041 Korean Air 2 2026-05-09
KAL2028 Korean Air 2 2026-05-03
KAL2027 Korean Air 2 2026-05-03
KAL142 Korean Air 2 2026-04-24
KAL141 Korean Air 2 2026-05-07
KAL882 Korean Air 1 2026-05-02
KAL868 Korean Air 1 2026-05-10
KAL2042 Korean Air 1 2026-05-09
KAL196P Korean Air 1 2026-05-26

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-30 KAL836 SZX → ICN May 30, 07:35 UTCMay 30, 08:15 UTC40m
2026-05-30 KAL836 SZX → ICN May 30, 05:15 UTCMay 30, 05:25 UTC10m
2026-05-30 KAL835 ICN → SZX May 30, 00:10 UTCMay 30, 00:35 UTC25m
2026-05-29 KAL836 SZX → ICN May 29, 07:45 UTCMay 29, 08:20 UTC35m
2026-05-29 KAL836 SZX → ICN May 29, 05:20 UTCMay 29, 05:35 UTC15m
2026-05-29 KAL835 ICN → SZX May 29, 02:55 UTCMay 29, 03:05 UTC10m
2026-05-29 KAL835 ICN → SZX May 29, 00:00 UTCMay 29, 00:25 UTC25m
2026-05-28 KAL864 PEK → ICN May 28, 18:35 UTCMay 28, 19:00 UTC25m
2026-05-28 KAL864 PEK → ICN May 28, 17:40 UTCMay 28, 17:50 UTC10m
2026-05-28 KAL863 ICN → PEK May 28, 11:40 UTCMay 28, 12:00 UTC20m
2026-05-28 KAL844 TAO → ICN May 28, 07:55 UTCMay 28, 08:30 UTC35m
2026-05-28 KAL843 ICN → TAO May 28, 04:25 UTCMay 28, 04:40 UTC15m
2026-05-28 KAL744 NGO → ICN May 28, 00:35 UTCMay 28, 02:05 UTC1h 30m
2026-05-27 KAL743 ICN → NGO May 27, 10:30 UTCMay 27, 11:50 UTC1h 20m
2026-05-27 KAL844 TAO → ICN May 27, 08:00 UTCMay 27, 08:20 UTC20m
2026-05-27 KAL843 ICN → TAO May 27, 04:24 UTCMay 27, 04:55 UTC30m
2026-05-27 KAL744 NGO → ICN May 27, 00:25 UTCMay 27, 01:59 UTC1h 35m
2026-05-26 KAL743 ICN → NGO May 26, 10:25 UTCMay 26, 11:39 UTC1h 15m
2026-05-26 KAL196P PUS → ICN May 26, 04:54 UTCMay 26, 05:30 UTC35m
2026-05-11 KAL843 ICN → TAO May 11, 04:25 UTCMay 11, 04:35 UTC10m
2026-05-11 KAL744 NGO → ICN May 11, 00:34 UTCMay 11, 01:55 UTC1h 20m
2026-05-10 KAL743 ICN → NGO May 10, 10:24 UTCMay 10, 11:35 UTC1h 10m
2026-05-10 KAL868 CAN → ICN May 10, 00:24 UTCMay 10, 07:55 UTC7h 30m
2026-05-09 KAL863 ICN → PEK May 9, 11:40 UTCMay 9, 11:55 UTC15m
2026-05-09 KAL2042 UBN → ICN May 9, 07:45 UTCMay 9, 07:55 UTC10m
2026-05-09 KAL2041 ICN → UBN May 9, 01:30 UTCMay 9, 01:40 UTC10m
2026-05-09 KAL2041 ICN → UBN May 9, 00:05 UTCMay 9, 00:20 UTC15m
2026-05-08 KAL836 SZX → ICN May 8, 07:34 UTCMay 8, 08:14 UTC40m
2026-05-07 KAL835 ICN → SZX May 7, 23:59 UTCMay 8, 00:44 UTC45m
2026-05-07 KAL864 PEK → ICN May 7, 18:55 UTCMay 7, 19:10 UTC15m
2026-05-07 KAL864 PEK → ICN May 7, 17:45 UTCMay 7, 17:55 UTC10m
2026-05-07 KAL863 ICN → PEK May 7, 11:55 UTCMay 7, 12:05 UTC10m
2026-05-07 KAL141 ICN → XIY May 7, 00:40 UTCMay 7, 06:25 UTC5h 45m
2026-05-06 KAL458 DAD → ICN May 6, 03:00 UTCMay 6, 13:10 UTC10h 10m
2026-05-05 KAL863 ICN → PEK May 5, 11:15 UTCMay 5, 11:30 UTC15m
2026-05-05 KAL836 SZX → ICN May 5, 07:35 UTCMay 5, 08:05 UTC30m
2026-05-05 KAL836 SZX → ICN May 5, 05:30 UTCMay 5, 05:40 UTC10m
2026-05-05 KAL835 ICN → SZX May 5, 00:05 UTCMay 5, 00:45 UTC40m
2026-05-04 KAL457 ICN → DAD May 4, 03:09 UTCMay 4, 13:00 UTC9h 50m
2026-05-03 KAL2028 TPE → ICN May 3, 11:20 UTCMay 3, 13:10 UTC1h 50m
2026-05-03 KAL2027 ICN → TPE May 3, 07:40 UTCMay 3, 10:00 UTC2h 20m
2026-05-02 KAL882 PVG → ICN May 2, 23:55 UTCMay 3, 05:00 UTC5h 4m
2026-05-02 KAL458 DAD → ICN May 2, 03:05 UTCMay 2, 13:00 UTC9h 55m
2026-05-01 KAL458 DAD → ICN May 1, 03:05 UTCMay 1, 13:10 UTC10h 5m
2026-04-30 KAL836 SZX → ICN Apr 30, 07:50 UTCApr 30, 08:15 UTC25m
2026-04-30 KAL835 ICN → SZX Apr 30, 00:05 UTCApr 30, 00:50 UTC45m
2026-04-29 KAL457 ICN → DAD Apr 29, 03:15 UTCApr 29, 13:10 UTC9h 56m
2026-04-28 KAL458 DAD → ICN Apr 28, 03:05 UTCApr 28, 13:00 UTC9h 55m
2026-04-27 KAL458 DAD → ICN Apr 27, 19:10 UTCApr 27, 19:50 UTC40m
2026-04-27 KAL457 ICN → DAD Apr 27, 03:10 UTCApr 27, 18:10 UTC15h 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 HL7585 page for operator, model, and routing details .

Mode-S 71BD85 frequently asked

What is Mode-S code 71BD85?
71BD85 is an ICAO 24-bit transponder address. Allocated to Korea, South. Assigned to HL7585.
Where is Mode-S 71BD85 registered?
Mode-S code 71BD85 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 71BD85 broadcasting right now?
No active broadcast right now. Last signal was 3h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 71BD85, octal 34336605, decimal 7,454,085.
What flights does 71BD85 operate?
Mode-S 71BD85 has broadcast 19 distinct callsigns, including KAL836, KAL835, KAL864, KAL863, KAL458.