Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

71C218

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

Currently assigned to HL8218 · BOEING 777-300ER

Hex
71C218
Octal
34341030
Decimal
7,455,256
Country
KR
Tail
HL8218
Type
B77W
No current signal · last broadcast 2h ago
Flights observed
212
Distinct callsigns
20
Country
KR
Last broadcast
2h ago

Last known position

Most recent position reported by Mode-S 71C218.

Country allocation

The ICAO 24-bit address 71C218 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
KAL926 - 20 2026-07-05
KAL925 - 19 2026-07-04
KAL437 Korean Air 16 2026-06-02
KAL652 - 14 2026-06-26
KAL091 - 13 2026-07-09
KAL651 - 12 2026-06-26
KAL438 Korean Air 12 2026-06-02
KAL092 - 11 2026-07-09
KAL788 Korean Air 7 2026-05-25
KAL787 Korean Air 7 2026-05-24
KAL658 - 6 2026-07-12
KAL038 Korean Air 6 2026-06-08
KAL037 Korean Air 6 2026-06-08
KAL657 - 5 2026-07-12
KAL645 - 5 2026-06-15
KAL475 - 5 2026-07-10
KAL946 Korean Air 4 2026-05-21
KAL646 Korean Air 4 2026-06-15
KAL476 - 4 2026-07-10
KAL945 Korean Air 3 2026-05-20

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-13 KAL005 ICN → LAS Jul 13, 12:20 UTCJul 13, 23:35 UTC11h 15m
2026-07-12 KAL658 - Jul 12, 17:15 UTCJul 12, 19:50 UTC2h 35m
2026-07-12 KAL658 - Jul 12, 14:55 UTCJul 12, 15:05 UTC10m
2026-07-12 KAL657 - Jul 12, 06:01 UTCJul 12, 06:15 UTC15m
2026-07-12 KAL657 - Jul 12, 01:10 UTCJul 12, 03:35 UTC2h 25m
2026-07-11 KAL658 - Jul 11, 19:25 UTCJul 11, 19:50 UTC25m
2026-07-11 KAL658 - Jul 11, 16:10 UTCJul 11, 16:25 UTC15m
2026-07-11 KAL658 - Jul 11, 15:00 UTCJul 11, 15:10 UTC10m
2026-07-11 KAL657 - Jul 11, 06:25 UTCJul 11, 06:40 UTC15m
2026-07-11 KAL657 - Jul 11, 01:45 UTCJul 11, 05:20 UTC3h 35m
2026-07-10 KAL476 - Jul 10, 22:10 UTCJul 10, 22:30 UTC20m
2026-07-10 KAL475 - Jul 10, 10:40 UTCJul 10, 18:55 UTC8h 15m
2026-07-09 KAL092 BOS → ICN Jul 9, 17:20 UTCJul 10, 07:40 UTC14h 20m
2026-07-09 KAL091 ICN → BOS Jul 9, 00:55 UTCJul 9, 14:30 UTC13h 35m
2026-07-08 KAL2042 - Jul 8, 07:40 UTCJul 8, 08:00 UTC20m
2026-07-08 KAL2041 - Jul 8, 00:10 UTCJul 8, 01:45 UTC1h 35m
2026-07-07 KAL658 - Jul 7, 15:15 UTCJul 7, 20:05 UTC4h 50m
2026-07-07 KAL657 - Jul 7, 01:15 UTCJul 7, 06:10 UTC4h 55m
2026-07-06 KAL472 - Jul 6, 01:20 UTCJul 6, 12:35 UTC11h 15m
2026-07-05 KAL476 - Jul 5, 10:25 UTCJul 5, 22:00 UTC11h 35m
2026-07-05 KAL926 - Jul 5, 06:35 UTCJul 5, 07:05 UTC30m
2026-07-04 KAL926 - Jul 4, 19:45 UTCJul 5, 05:45 UTC10h 0m
2026-07-04 KAL925 - Jul 4, 03:10 UTCJul 4, 16:30 UTC13h 20m
2026-07-03 KAL475 ICN → ICN Jul 3, 10:50 UTCJul 3, 22:35 UTC11h 45m
2026-07-02 KAL092 BOS → ICN Jul 2, 17:25 UTCJul 3, 07:35 UTC14h 10m
2026-07-02 KAL091 - Jul 2, 00:55 UTCJul 2, 14:10 UTC13h 15m
2026-07-01 KAL766 - Jul 1, 06:20 UTCJul 1, 08:45 UTC2h 25m
2026-07-01 KAL765 ICN → CTS Jul 1, 02:05 UTCJul 1, 04:15 UTC2h 10m
2026-06-27 KAL887 ICN → ICN Jun 27, 02:55 UTCJun 27, 08:20 UTC5h 25m
2026-06-26 KAL652 - Jun 26, 17:29 UTCJun 26, 22:14 UTC4h 45m
2026-06-26 KAL651 ICN → BKK Jun 26, 09:35 UTCJun 26, 14:25 UTC4h 50m
2026-06-26 KAL926 - Jun 26, 06:50 UTCJun 26, 07:10 UTC20m
2026-06-25 KAL926 - Jun 25, 19:49 UTCJun 26, 05:55 UTC10h 5m
2026-06-25 KAL925 - Jun 25, 05:00 UTCJun 25, 16:45 UTC11h 45m
2026-06-25 KAL925 - Jun 25, 03:40 UTCJun 25, 03:54 UTC15m
2026-06-24 KAL652 - Jun 24, 17:20 UTCJun 24, 22:19 UTC5h 0m
2026-06-24 KAL651 ICN → BKK Jun 24, 09:49 UTCJun 24, 14:34 UTC4h 45m
2026-06-24 KAL166 - Jun 24, 06:29 UTCJun 24, 06:50 UTC20m
2026-06-24 KAL165 - Jun 24, 00:20 UTCJun 24, 00:40 UTC20m
2026-06-23 KAL644 - Jun 23, 17:20 UTCJun 23, 20:10 UTC2h 50m
2026-06-23 KAL643 - Jun 23, 10:19 UTCJun 23, 10:35 UTC15m
2026-06-23 KAL643 - Jun 23, 05:15 UTCJun 23, 07:45 UTC2h 30m
2026-06-22 KAL006 LAS → ICN Jun 22, 07:10 UTCJun 22, 19:00 UTC11h 50m
2026-06-21 KAL005 ICN → LAS Jun 21, 12:35 UTCJun 21, 22:54 UTC10h 20m
2026-06-20 KAL092 BOS → ICN Jun 20, 18:14 UTCJun 21, 08:10 UTC13h 55m
2026-06-20 KAL091 - Jun 20, 02:04 UTCJun 20, 15:29 UTC13h 25m
2026-06-18 KAL092 BOS → ICN Jun 18, 17:45 UTCJun 19, 08:04 UTC14h 19m
2026-06-18 KAL091 ICN → BOS Jun 18, 01:20 UTCJun 18, 14:40 UTC13h 20m
2026-06-17 KAL926 - Jun 17, 06:55 UTCJun 17, 07:20 UTC25m
2026-06-16 KAL926 - Jun 16, 19:50 UTCJun 16, 23:40 UTC3h 50m

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 HL8218 page for operator, model, and routing details .

Mode-S 71C218 frequently asked

What is Mode-S code 71C218?
71C218 is an ICAO 24-bit transponder address. Allocated to Korea, South. Assigned to HL8218.
Where is Mode-S 71C218 registered?
Mode-S code 71C218 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 71C218 broadcasting right now?
No active broadcast right now. Last signal was 2h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 71C218, octal 34341030, decimal 7,455,256.
What flights does 71C218 operate?
Mode-S 71C218 has broadcast 20 distinct callsigns, including KAL926, KAL925, KAL437, KAL652, KAL091.