Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

71C747

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

Hex
71C747
Octal
34343507
Decimal
7,456,583
Country
KR
No current signal · last broadcast 4h ago
Flights observed
245
Distinct callsigns
20
Country
KR
Last broadcast
4h ago

Last known position

Most recent position reported by Mode-S 71C747.

Country allocation

The ICAO 24-bit address 71C747 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
KAL2052 Korean Air 25 2026-05-30
KAL1174 Korean Air 23 2026-05-15
KAL1045 Korean Air 23 2026-05-14
KAL1820 Korean Air 16 2026-05-06
KAL2120 Korean Air 15 2026-05-30
KAL2119 Korean Air 15 2026-05-30
KAL1815 Korean Air 15 2026-05-06
KAL2051 Korean Air 14 2026-05-30
KAL1834 Korean Air 10 2026-05-06
KAL1831 Korean Air 10 2026-05-06
KAL1826 Korean Air 10 2026-05-06
KAL1823 Korean Air 10 2026-05-06
KAL1822 Korean Air 9 2026-05-15
KAL1819 Korean Air 9 2026-05-15
KAL1328 Korean Air 9 2026-05-15
KAL1205 Korean Air 9 2026-05-15
KAL792 Korean Air 3 2026-05-04
KAL791 Korean Air 3 2026-05-04
KAL2129 Korean Air 3 2026-05-03
KAL1407 Korean Air 3 2026-05-04

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-30 KAL2120 KIX → GMP May 30, 10:50 UTCMay 30, 12:25 UTC1h 35m
2026-05-30 KAL2119 GMP → KIX May 30, 07:35 UTCMay 30, 09:00 UTC1h 25m
2026-05-30 KAL2052 PEK → GMP May 30, 05:20 UTCMay 30, 05:45 UTC25m
2026-05-30 KAL2052 PEK → GMP May 30, 04:10 UTCMay 30, 04:20 UTC10m
2026-05-30 KAL2051 GMP → PEK May 30, 00:15 UTCMay 30, 00:40 UTC25m
2026-05-29 KAL2120 KIX → GMP May 29, 11:00 UTCMay 29, 12:25 UTC1h 25m
2026-05-29 KAL2119 GMP → KIX May 29, 07:40 UTCMay 29, 09:00 UTC1h 20m
2026-05-29 KAL2052 PEK → GMP May 29, 05:05 UTCMay 29, 05:30 UTC25m
2026-05-29 KAL2052 PEK → GMP May 29, 04:10 UTCMay 29, 04:20 UTC10m
2026-05-29 KAL2051 GMP → PEK May 29, 00:40 UTCMay 29, 01:05 UTC25m
2026-05-28 KAL2120 KIX → GMP May 28, 11:00 UTCMay 28, 12:25 UTC1h 25m
2026-05-28 KAL2119 GMP → KIX May 28, 07:45 UTCMay 28, 09:05 UTC1h 20m
2026-05-28 KAL2052 PEK → GMP May 28, 05:10 UTCMay 28, 05:35 UTC25m
2026-05-28 KAL2052 PEK → GMP May 28, 04:10 UTCMay 28, 04:20 UTC10m
2026-05-28 KAL2051 GMP → PEK May 28, 00:25 UTCMay 28, 00:50 UTC25m
2026-05-27 KAL2120 KIX → GMP May 27, 11:00 UTCMay 27, 12:20 UTC1h 20m
2026-05-27 KAL2119 GMP → KIX May 27, 07:40 UTCMay 27, 09:00 UTC1h 20m
2026-05-27 KAL2052 PEK → GMP May 27, 05:04 UTCMay 27, 05:29 UTC25m
2026-05-27 KAL2052 PEK → GMP May 27, 03:59 UTCMay 27, 04:09 UTC10m
2026-05-27 KAL2051 GMP → PEK May 27, 00:34 UTCMay 27, 00:59 UTC25m
2026-05-26 KAL2120 KIX → GMP May 26, 11:00 UTCMay 26, 12:24 UTC1h 25m
2026-05-26 KAL2119 GMP → KIX May 26, 07:45 UTCMay 26, 09:15 UTC1h 30m
2026-05-26 KAL2052 PEK → GMP May 26, 05:15 UTCMay 26, 05:49 UTC35m
2026-05-26 KAL2052 PEK → GMP May 26, 04:10 UTCMay 26, 04:20 UTC10m
2026-05-26 KAL2051 GMP → PEK May 26, 00:24 UTCMay 26, 00:49 UTC25m
2026-05-25 KAL2120 KIX → GMP May 25, 11:00 UTCMay 25, 12:20 UTC1h 20m
2026-05-25 KAL2119 GMP → KIX May 25, 07:40 UTCMay 25, 09:00 UTC1h 20m
2026-05-25 KAL2052 PEK → GMP May 25, 05:15 UTCMay 25, 05:35 UTC20m
2026-05-24 KAL2120 KIX → GMP May 24, 11:00 UTCMay 24, 12:15 UTC1h 15m
2026-05-24 KAL2119 GMP → KIX May 24, 07:40 UTCMay 24, 09:05 UTC1h 25m
2026-05-24 KAL2052 PEK → GMP May 24, 05:10 UTCMay 24, 05:35 UTC25m
2026-05-24 KAL2051 GMP → PEK May 24, 00:15 UTCMay 24, 00:40 UTC25m
2026-05-23 KAL2120 KIX → GMP May 23, 10:55 UTCMay 23, 12:20 UTC1h 25m
2026-05-23 KAL2119 GMP → KIX May 23, 07:40 UTCMay 23, 09:05 UTC1h 25m
2026-05-23 KAL2052 PEK → GMP May 23, 05:15 UTCMay 23, 05:40 UTC25m
2026-05-23 KAL2051 GMP → PEK May 23, 00:15 UTCMay 23, 00:40 UTC25m
2026-05-22 KAL2120 KIX → GMP May 22, 10:55 UTCMay 22, 12:15 UTC1h 20m
2026-05-22 KAL2119 GMP → KIX May 22, 07:40 UTCMay 22, 09:00 UTC1h 20m
2026-05-22 KAL2052 PEK → GMP May 22, 05:05 UTCMay 22, 05:30 UTC25m
2026-05-22 KAL2052 PEK → GMP May 22, 04:00 UTCMay 22, 04:15 UTC15m
2026-05-22 KAL2051 GMP → PEK May 22, 00:25 UTCMay 22, 00:50 UTC25m
2026-05-21 KAL2120 KIX → GMP May 21, 11:05 UTCMay 21, 12:25 UTC1h 20m
2026-05-21 KAL2119 GMP → KIX May 21, 07:55 UTCMay 21, 09:30 UTC1h 35m
2026-05-21 KAL2052 PEK → GMP May 21, 05:10 UTCMay 21, 05:35 UTC25m
2026-05-21 KAL2052 PEK → GMP May 21, 04:05 UTCMay 21, 04:15 UTC10m
2026-05-21 KAL2051 GMP → PEK May 21, 00:20 UTCMay 21, 00:45 UTC25m
2026-05-20 KAL2120 KIX → GMP May 20, 10:50 UTCMay 20, 12:20 UTC1h 30m
2026-05-20 KAL2119 GMP → KIX May 20, 07:40 UTCMay 20, 09:15 UTC1h 35m
2026-05-20 KAL2052 PEK → GMP May 20, 05:15 UTCMay 20, 05:50 UTC35m
2026-05-20 KAL2052 PEK → GMP May 20, 04:00 UTCMay 20, 04:15 UTC15m

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.

Mode-S 71C747 frequently asked

What is Mode-S code 71C747?
71C747 is an ICAO 24-bit transponder address. Allocated to Korea, South.
Where is Mode-S 71C747 registered?
Mode-S code 71C747 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 71C747 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 71C747, octal 34343507, decimal 7,456,583.
What flights does 71C747 operate?
Mode-S 71C747 has broadcast 20 distinct callsigns, including KAL2052, KAL1174, KAL1045, KAL1820, KAL2120.