Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

71C209

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

Currently assigned to HL8209 · BOEING 777-300ER

Hex
71C209
Octal
34341011
Decimal
7,455,241
Country
KR
Tail
HL8209
Type
B77W
No current signal · last broadcast 1h ago
Flights observed
183
Distinct callsigns
20
Country
KR
Last broadcast
1h ago

Last known position

Most recent position reported by Mode-S 71C209.

Country allocation

The ICAO 24-bit address 71C209 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
KAL038 - 22 2026-07-10
KAL037 - 22 2026-07-10
KAL092 - 14 2026-07-14
KAL091 - 14 2026-07-14
KAL652 - 9 2026-06-15
KAL651 - 9 2026-06-15
KAL476 - 8 2026-07-13
KAL926 Korean Air 7 2026-06-05
KAL475 Korean Air 7 2026-06-07
KAL925 Korean Air 6 2026-06-04
KAL624 - 6 2026-06-28
KAL623 - 6 2026-06-28
KAL437 - 5 2026-07-06
KAL622 - 4 2026-06-27
KAL621 - 4 2026-06-26
KAL945 Korean Air 3 2026-06-14
KAL788 Korean Air 3 2026-06-06
KAL787 Korean Air 3 2026-06-05
KAL9987 - 2 2026-07-08
KAL946 - 2 2026-06-14

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 KAL092 - Jul 14, 17:20 UTCJul 14, 18:15 UTC55m
2026-07-14 KAL091 ICN → BOS Jul 14, 01:10 UTCJul 14, 14:10 UTC13h 0m
2026-07-13 KAL476 ICN → ICN Jul 13, 10:35 UTCJul 13, 22:40 UTC12h 5m
2026-07-12 KAL092 - Jul 12, 17:30 UTCJul 13, 08:01 UTC14h 30m
2026-07-12 KAL091 ICN → BOS Jul 12, 01:05 UTCJul 12, 14:20 UTC13h 15m
2026-07-10 KAL038 - Jul 10, 17:45 UTCJul 11, 06:50 UTC13h 5m
2026-07-10 KAL037 ICN → ORD Jul 10, 02:10 UTCJul 10, 14:45 UTC12h 35m
2026-07-08 KAL9976 VCE → ICN Jul 8, 23:35 UTCJul 9, 09:45 UTC10h 10m
2026-07-08 KAL2987 - Jul 8, 18:55 UTCJul 8, 20:50 UTC1h 55m
2026-07-08 KAL9987 - Jul 8, 04:45 UTCJul 8, 17:05 UTC12h 20m
2026-07-08 KAL9987 - Jul 8, 03:30 UTCJul 8, 03:55 UTC25m
2026-07-07 KAL874 - Jul 7, 07:30 UTCJul 7, 08:00 UTC30m
2026-07-07 KAL873 - Jul 7, 04:35 UTCJul 7, 04:55 UTC20m
2026-07-06 KAL438 - Jul 6, 21:05 UTCJul 7, 02:10 UTC5h 5m
2026-07-06 KAL437 - Jul 6, 17:15 UTCJul 6, 17:30 UTC15m
2026-07-06 KAL437 - Jul 6, 11:15 UTCJul 6, 15:55 UTC4h 40m
2026-07-05 KAL038 ORD → ICN Jul 5, 17:50 UTCJul 6, 07:45 UTC13h 55m
2026-07-05 KAL037 - Jul 5, 02:00 UTCJul 5, 14:05 UTC12h 5m
2026-07-03 KAL092 BOS → ICN Jul 3, 17:35 UTCJul 4, 07:30 UTC13h 55m
2026-07-03 KAL091 ICN → BOS Jul 3, 01:00 UTCJul 3, 14:10 UTC13h 10m
2026-07-01 KAL092 BOS → ICN Jul 1, 17:30 UTCJul 2, 07:55 UTC14h 25m
2026-07-01 KAL091 ICN → BOS Jul 1, 01:05 UTCJul 1, 14:25 UTC13h 20m
2026-06-29 KAL038 ORD → ICN Jun 29, 17:49 UTCJun 30, 07:15 UTC13h 26m
2026-06-29 KAL037 ICN → ORD Jun 29, 02:09 UTCJun 29, 14:39 UTC12h 30m
2026-06-28 KAL624 MNL → ICN Jun 28, 16:00 UTCJun 28, 19:29 UTC3h 30m
2026-06-28 KAL623 - Jun 28, 10:39 UTCJun 28, 14:04 UTC3h 25m
2026-06-28 KAL874 - Jun 28, 07:25 UTCJun 28, 07:50 UTC25m
2026-06-28 KAL873 - Jun 28, 04:20 UTCJun 28, 04:29 UTC10m
2026-06-27 KAL622 - Jun 27, 04:29 UTCJun 27, 07:49 UTC3h 20m
2026-06-26 KAL621 ICN → MNL Jun 26, 23:09 UTCJun 27, 02:29 UTC3h 20m
2026-06-25 KAL891 ICN → ICN Jun 25, 10:35 UTCJun 26, 02:44 UTC16h 10m
2026-06-25 KAL832 - Jun 25, 04:10 UTCJun 25, 04:29 UTC20m
2026-06-24 KAL831 - Jun 24, 23:29 UTCJun 24, 23:50 UTC20m
2026-06-23 KAL038 ORD → ICN Jun 23, 17:44 UTCJun 24, 07:05 UTC13h 20m
2026-06-23 KAL037 ICN → ORD Jun 23, 02:09 UTCJun 23, 14:10 UTC12h 0m
2026-06-21 KAL092 BOS → ICN Jun 21, 18:10 UTCJun 22, 08:15 UTC14h 5m
2026-06-21 KAL091 ICN → BOS Jun 21, 01:14 UTCJun 21, 14:50 UTC13h 35m
2026-06-20 KAL476 ICN → ICN Jun 20, 10:20 UTCJun 20, 22:05 UTC11h 45m
2026-06-19 KAL092 BOS → ICN Jun 19, 17:29 UTCJun 20, 07:14 UTC13h 45m
2026-06-19 KAL091 ICN → BOS Jun 19, 00:49 UTCJun 19, 14:24 UTC13h 35m
2026-06-18 KAL006 LAS → ICN Jun 18, 07:05 UTCJun 18, 18:55 UTC11h 50m
2026-06-17 KAL005 ICN → LAS Jun 17, 12:25 UTCJun 17, 23:30 UTC11h 5m
2026-06-15 KAL652 - Jun 15, 17:50 UTCJun 15, 22:35 UTC4h 45m
2026-06-15 KAL651 ICN → BKK Jun 15, 09:25 UTCJun 15, 14:45 UTC5h 20m
2026-06-14 KAL946 - Jun 14, 18:00 UTCJun 14, 20:10 UTC2h 10m
2026-06-14 KAL945 ICN → FRA Jun 14, 02:20 UTCJun 14, 15:15 UTC12h 56m
2026-06-12 KAL652 BKK → ICN Jun 12, 17:05 UTCJun 12, 22:00 UTC4h 55m
2026-06-12 KAL651 ICN → BKK Jun 12, 09:25 UTCJun 12, 14:35 UTC5h 10m
2026-06-11 KAL624 MNL → ICN Jun 11, 16:05 UTCJun 11, 19:20 UTC3h 15m
2026-06-11 KAL623 ICN → MNL Jun 11, 10:30 UTCJun 11, 14:10 UTC3h 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 HL8209 page for operator, model, and routing details .

Mode-S 71C209 frequently asked

What is Mode-S code 71C209?
71C209 is an ICAO 24-bit transponder address. Allocated to Korea, South. Assigned to HL8209.
Where is Mode-S 71C209 registered?
Mode-S code 71C209 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 71C209 broadcasting right now?
No active broadcast right now. Last signal was 1h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 71C209, octal 34341011, decimal 7,455,241.
What flights does 71C209 operate?
Mode-S 71C209 has broadcast 20 distinct callsigns, including KAL038, KAL037, KAL092, KAL091, KAL652.