Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

71BD73

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

Currently assigned to HL7573 · BOEING 777-300

Hex
71BD73
Octal
34336563
Decimal
7,454,067
Country
KR
Tail
HL7573
Type
B773
No current signal · last broadcast Jun 20, 07:29 UTC
Flights observed
126
Distinct callsigns
20
Country
KR
Last broadcast
Jun 20, 07:29 UTC

Last known position

Most recent position reported by Mode-S 71BD73.

Country allocation

The ICAO 24-bit address 71BD73 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
KAL622 Korean Air 17 2026-06-06
KAL621 Korean Air 17 2026-06-05
KAL624 Korean Air 14 2026-06-15
KAL623 - 14 2026-06-15
KAL766 - 13 2026-06-18
KAL416 - 12 2026-06-19
KAL765 - 11 2026-06-18
KAL602 - 7 2026-06-17
KAL415 Korean Air 4 2026-05-19
KAL601 Korean Air 2 2026-06-06
KAL2022 - 2 2026-06-20
KAL2021 - 2 2026-06-20
KAL882 Korean Air 1 2026-06-10
KAL864 Korean Air 1 2026-06-18
KAL863 - 1 2026-06-18
KAL788 Korean Air 1 2026-06-01
KAL787 Korean Air 1 2026-05-31
KAL724 - 1 2026-06-15
KAL723 - 1 2026-06-15
KAL600P - 1 2026-06-03

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-06-20 KAL2022 - Jun 20, 05:29 UTCJun 20, 07:29 UTC2h 0m
2026-06-20 KAL2021 - Jun 20, 01:50 UTCJun 20, 03:54 UTC2h 5m
2026-06-19 KAL416 - Jun 19, 01:24 UTCJun 19, 11:24 UTC10h 0m
2026-06-18 KAL864 PEK → ICN Jun 18, 18:55 UTCJun 18, 19:15 UTC20m
2026-06-18 KAL863 - Jun 18, 11:25 UTCJun 18, 11:45 UTC20m
2026-06-18 KAL766 - Jun 18, 06:05 UTCJun 18, 08:25 UTC2h 20m
2026-06-18 KAL765 - Jun 18, 01:55 UTCJun 18, 04:10 UTC2h 15m
2026-06-17 KAL602 - Jun 17, 11:45 UTCJun 17, 21:10 UTC9h 25m
2026-06-17 KAL766 - Jun 17, 06:10 UTCJun 17, 08:35 UTC2h 25m
2026-06-17 KAL765 - Jun 17, 02:20 UTCJun 17, 04:35 UTC2h 15m
2026-06-16 KAL416 GUM → ICN Jun 16, 01:19 UTCJun 16, 11:30 UTC10h 10m
2026-06-15 KAL624 MNL → ICN Jun 15, 16:15 UTCJun 15, 19:30 UTC3h 15m
2026-06-15 KAL623 - Jun 15, 10:40 UTCJun 15, 14:10 UTC3h 30m
2026-06-15 KAL724 - Jun 15, 04:00 UTCJun 15, 05:20 UTC1h 20m
2026-06-15 KAL723 - Jun 15, 01:00 UTCJun 15, 02:15 UTC1h 15m
2026-06-14 KAL602 CEB → ICN Jun 14, 12:00 UTCJun 14, 21:40 UTC9h 40m
2026-06-14 KAL766 - Jun 14, 08:30 UTCJun 14, 08:55 UTC25m
2026-06-14 KAL766 - Jun 14, 06:25 UTCJun 14, 08:00 UTC1h 35m
2026-06-14 KAL765 - Jun 14, 02:10 UTCJun 14, 04:15 UTC2h 5m
2026-06-13 KAL2022 TPE → ICN Jun 13, 05:40 UTCJun 13, 07:35 UTC1h 55m
2026-06-13 KAL2021 - Jun 13, 01:55 UTCJun 13, 04:05 UTC2h 10m
2026-06-12 KAL602 CEB → ICN Jun 12, 11:35 UTCJun 12, 21:20 UTC9h 45m
2026-06-12 KAL766 CTS → ICN Jun 12, 08:10 UTCJun 12, 08:45 UTC35m
2026-06-12 KAL766 CTS → ICN Jun 12, 06:05 UTCJun 12, 07:40 UTC1h 35m
2026-06-12 KAL765 ICN → CTS Jun 12, 01:50 UTCJun 12, 03:55 UTC2h 5m
2026-06-10 KAL882 PVG → ICN Jun 10, 23:40 UTCJun 11, 05:00 UTC5h 20m
2026-06-09 KAL766 CTS → ICN Jun 9, 06:15 UTCJun 9, 09:10 UTC2h 55m
2026-06-09 KAL765 ICN → CTS Jun 9, 02:00 UTCJun 9, 04:05 UTC2h 5m
2026-06-06 KAL601 ICN → CEB Jun 6, 13:15 UTCJun 6, 21:20 UTC8h 5m
2026-06-06 KAL601 ICN → CEB Jun 6, 11:39 UTCJun 6, 12:04 UTC25m
2026-06-06 KAL622 MNL → ICN Jun 6, 04:40 UTCJun 6, 07:55 UTC3h 15m
2026-06-05 KAL621 ICN → MNL Jun 5, 23:10 UTCJun 6, 02:30 UTC3h 20m
2026-06-05 KAL416 GUM → ICN Jun 5, 01:25 UTCJun 5, 11:30 UTC10h 5m
2026-06-04 KAL416 GUM → ICN Jun 4, 01:25 UTCJun 4, 11:25 UTC10h 0m
2026-06-03 KAL600P - Jun 3, 22:55 UTCJun 3, 23:05 UTC10m
2026-06-03 KAL2102 HND → GMP Jun 3, 10:10 UTCJun 3, 11:55 UTC1h 45m
2026-06-03 KAL2101 GMP → HND Jun 3, 06:40 UTCJun 3, 08:20 UTC1h 40m
2026-06-03 KAL599P - Jun 3, 04:15 UTCJun 3, 04:35 UTC20m
2026-06-01 KAL788 FUK → ICN Jun 1, 01:55 UTCJun 1, 03:00 UTC1h 5m
2026-05-31 KAL787 ICN → FUK May 31, 23:25 UTCMay 31, 23:50 UTC25m
2026-05-30 KAL624 MNL → ICN May 30, 16:40 UTCMay 30, 19:55 UTC3h 15m
2026-05-30 KAL623 ICN → MNL May 30, 10:50 UTCMay 30, 14:35 UTC3h 45m
2026-05-30 KAL622 MNL → ICN May 30, 05:15 UTCMay 30, 08:40 UTC3h 25m
2026-05-29 KAL621 ICN → MNL May 29, 23:10 UTCMay 30, 02:35 UTC3h 25m
2026-05-29 KAL416 GUM → ICN May 29, 01:25 UTCMay 29, 11:45 UTC10h 20m
2026-05-28 KAL624 MNL → ICN May 28, 16:00 UTCMay 28, 19:15 UTC3h 15m
2026-05-28 KAL623 ICN → MNL May 28, 10:30 UTCMay 28, 13:55 UTC3h 25m
2026-05-28 KAL622 MNL → ICN May 28, 04:55 UTCMay 28, 08:15 UTC3h 20m
2026-05-27 KAL621 ICN → MNL May 27, 23:10 UTCMay 28, 02:30 UTC3h 20m
2026-05-27 KAL624 MNL → ICN May 27, 16:25 UTCMay 27, 19:40 UTC3h 15m

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 HL7573 page for operator, model, and routing details .

Mode-S 71BD73 frequently asked

What is Mode-S code 71BD73?
71BD73 is an ICAO 24-bit transponder address. Allocated to Korea, South. Assigned to HL7573.
Where is Mode-S 71BD73 registered?
Mode-S code 71BD73 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 71BD73 broadcasting right now?
No active broadcast right now. Last signal was Jun 20, 07:29 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 71BD73, octal 34336563, decimal 7,454,067.
What flights does 71BD73 operate?
Mode-S 71BD73 has broadcast 20 distinct callsigns, including KAL622, KAL621, KAL624, KAL623, KAL766.