Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

71C216

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

Currently assigned to HL8216 · BOEING 777-300ER

Hex
71C216
Octal
34341026
Decimal
7,455,254
Country
KR
Tail
HL8216
Type
B77W
Broadcasting now · callsign KAL643 · 29,150 ft
Flights observed
129
Distinct callsigns
8
Country
KR
Last broadcast
2h ago

Current position

71C216 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 71C216 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 8 distinct

Callsign Airline Flights Last seen
KAL643 Korean Air 59 2026-05-29
KAL644 Korean Air 53 2026-05-29
KAL788 Korean Air 6 2026-05-30
KAL787 Korean Air 6 2026-05-29
KAL2028 Korean Air 2 2026-05-26
KAL888 Korean Air 1 2026-05-05
KAL841 Korean Air 1 2026-05-09
KAL2027 Korean Air 1 2026-05-26

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-30 KAL788 FUK → ICN May 30, 01:50 UTCMay 30, 03:00 UTC1h 10m
2026-05-29 KAL787 ICN → FUK May 29, 23:25 UTCMay 29, 23:50 UTC25m
2026-05-29 KAL644 SIN → ICN May 29, 17:35 UTCMay 29, 20:25 UTC2h 50m
2026-05-29 KAL644 SIN → ICN May 29, 14:30 UTCMay 29, 14:40 UTC10m
2026-05-29 KAL643 ICN → SIN May 29, 05:25 UTCMay 29, 10:55 UTC5h 30m
2026-05-28 KAL644 SIN → ICN May 28, 17:15 UTCMay 28, 20:05 UTC2h 50m
2026-05-28 KAL643 ICN → SIN May 28, 05:05 UTCMay 28, 07:40 UTC2h 35m
2026-05-28 KAL788 FUK → ICN May 28, 01:50 UTCMay 28, 02:55 UTC1h 5m
2026-05-27 KAL787 ICN → FUK May 27, 23:20 UTCMay 27, 23:50 UTC30m
2026-05-27 KAL644 SIN → ICN May 27, 17:15 UTCMay 27, 20:20 UTC3h 5m
2026-05-27 KAL644 SIN → ICN May 27, 14:30 UTCMay 27, 14:40 UTC10m
2026-05-27 KAL643 ICN → SIN May 27, 05:29 UTCMay 27, 08:00 UTC2h 30m
2026-05-26 KAL2028 TPE → ICN May 26, 12:40 UTCMay 26, 13:15 UTC35m
2026-05-26 KAL2028 TPE → ICN May 26, 11:05 UTCMay 26, 11:30 UTC25m
2026-05-26 KAL2027 ICN → TPE May 26, 07:24 UTCMay 26, 09:25 UTC2h 0m
2026-05-25 KAL644 SIN → ICN May 25, 17:15 UTCMay 25, 20:04 UTC2h 49m
2026-05-25 KAL643 ICN → SIN May 25, 10:15 UTCMay 25, 10:40 UTC25m
2026-05-25 KAL643 ICN → SIN May 25, 05:05 UTCMay 25, 07:35 UTC2h 30m
2026-05-24 KAL644 SIN → ICN May 24, 17:05 UTCMay 24, 19:55 UTC2h 50m
2026-05-24 KAL643 ICN → SIN May 24, 05:00 UTCMay 24, 10:50 UTC5h 50m
2026-05-23 KAL644 SIN → ICN May 23, 17:10 UTCMay 23, 20:00 UTC2h 51m
2026-05-23 KAL643 ICN → SIN May 23, 05:15 UTCMay 23, 11:05 UTC5h 50m
2026-05-22 KAL644 SIN → ICN May 22, 17:10 UTCMay 22, 20:10 UTC3h 0m
2026-05-22 KAL643 ICN → SIN May 22, 05:15 UTCMay 22, 07:50 UTC2h 35m
2026-05-21 KAL644 SIN → ICN May 21, 17:10 UTCMay 21, 20:15 UTC3h 5m
2026-05-21 KAL643 ICN → SIN May 21, 10:30 UTCMay 21, 10:40 UTC10m
2026-05-21 KAL643 ICN → SIN May 21, 05:20 UTCMay 21, 07:55 UTC2h 35m
2026-05-20 KAL644 SIN → ICN May 20, 17:35 UTCMay 20, 20:25 UTC2h 50m
2026-05-20 KAL643 ICN → SIN May 20, 05:30 UTCMay 20, 11:15 UTC5h 45m
2026-05-20 KAL788 FUK → ICN May 20, 02:10 UTCMay 20, 03:15 UTC1h 5m
2026-05-19 KAL787 ICN → FUK May 19, 23:35 UTCMay 20, 00:05 UTC30m
2026-05-18 KAL644 SIN → ICN May 18, 17:10 UTCMay 18, 20:05 UTC2h 54m
2026-05-18 KAL643 ICN → SIN May 18, 10:35 UTCMay 18, 10:45 UTC10m
2026-05-18 KAL643 ICN → SIN May 18, 05:00 UTCMay 18, 07:35 UTC2h 35m
2026-05-18 KAL788 FUK → ICN May 18, 02:10 UTCMay 18, 03:10 UTC1h 0m
2026-05-17 KAL787 ICN → FUK May 17, 23:30 UTCMay 18, 00:05 UTC35m
2026-05-17 KAL644 SIN → ICN May 17, 17:30 UTCMay 17, 20:30 UTC3h 0m
2026-05-17 KAL644 SIN → ICN May 17, 14:30 UTCMay 17, 14:40 UTC10m
2026-05-17 KAL643 ICN → SIN May 17, 05:05 UTCMay 17, 07:40 UTC2h 35m
2026-05-16 KAL644 SIN → ICN May 16, 17:25 UTCMay 16, 20:15 UTC2h 50m
2026-05-16 KAL643 ICN → SIN May 16, 10:25 UTCMay 16, 10:35 UTC10m
2026-05-16 KAL643 ICN → SIN May 16, 05:10 UTCMay 16, 07:35 UTC2h 26m
2026-05-15 KAL644 SIN → ICN May 15, 17:15 UTCMay 15, 20:05 UTC2h 50m
2026-05-15 KAL644 SIN → ICN May 15, 14:20 UTCMay 15, 14:30 UTC10m
2026-05-15 KAL643 ICN → SIN May 15, 05:15 UTCMay 15, 10:30 UTC5h 15m
2026-05-15 KAL788 FUK → ICN May 15, 01:50 UTCMay 15, 02:50 UTC1h 0m
2026-05-14 KAL787 ICN → FUK May 14, 23:15 UTCMay 14, 23:45 UTC30m
2026-05-14 KAL644 SIN → ICN May 14, 17:20 UTCMay 14, 20:10 UTC2h 50m
2026-05-14 KAL644 SIN → ICN May 14, 14:25 UTCMay 14, 14:35 UTC10m
2026-05-14 KAL643 ICN → SIN May 14, 05:05 UTCMay 14, 07:45 UTC2h 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 HL8216 page for operator, model, and routing details .

Mode-S 71C216 frequently asked

What is Mode-S code 71C216?
71C216 is an ICAO 24-bit transponder address. Allocated to Korea, South. Assigned to HL8216.
Where is Mode-S 71C216 registered?
Mode-S code 71C216 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 71C216 broadcasting right now?
Yes. Mode-S 71C216 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 71C216, octal 34341026, decimal 7,455,254.
What flights does 71C216 operate?
Mode-S 71C216 has broadcast 8 distinct callsigns, including KAL643, KAL644, KAL788, KAL787, KAL2028.