Apparatus

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sensors Mode-S transponder

71C046

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

Currently assigned to HL8046 · BOEING 777-200LR

Hex
71C046
Octal
34340106
Decimal
7,454,790
Country
KR
Tail
HL8046
Type
B77L
No current signal · last broadcast Jul 26, 21:30 UTC
Flights observed
281
Distinct callsigns
20
Country
KR
Last broadcast
Jul 26, 21:30 UTC

Last known position

Most recent position reported by Mode-S 71C046.

Country allocation

The ICAO 24-bit address 71C046 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
KAL251 - 16 2026-07-17
KAL249 - 13 2026-07-13
KAL313 - 10 2026-07-21
KAL285 - 9 2026-07-11
KAL314 - 8 2026-07-21
KAL274 Korean Air 8 2026-07-25
KAL231 Korean Air 8 2026-04-16
KAL224 Korean Air 8 2026-06-13
KAL252 - 7 2026-07-17
KAL207 Korean Air 7 2026-06-12
KAL9231 - 6 2026-07-05
KAL8250 - 6 2026-06-26
KAL336 - 6 2026-07-06
KAL284 Korean Air 6 2026-05-28
KAL283 Korean Air 6 2026-05-27
KAL273 Korean Air 6 2026-07-23
KAL9313 Korean Air 5 2026-05-17
KAL8313 - 5 2026-07-10
KAL541 - 5 2026-06-23
KAL341 - 5 2026-07-15

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 KAL568 ZRH → ICN Jul 26, 19:25 UTCJul 26, 21:30 UTC2h 5m
2026-07-26 KAL567 ICN → SVO Jul 26, 15:25 UTCJul 26, 16:30 UTC1h 5m
2026-07-26 KAL567 ICN → SVO Jul 26, 01:10 UTCJul 26, 12:45 UTC11h 36m
2026-07-25 KAL274 LAX → ICN Jul 25, 05:50 UTCJul 25, 17:40 UTC11h 50m
2026-07-24 KAL274 LAX → ICN Jul 24, 19:55 UTCJul 25, 03:20 UTC7h 25m
2026-07-24 KAL274 LAX → ICN Jul 24, 14:05 UTCJul 24, 14:15 UTC10m
2026-07-24 KAL274 LAX → ICN Jul 24, 07:35 UTCJul 24, 10:20 UTC2h 45m
2026-07-23 KAL273 MIA → VCP Jul 23, 21:15 UTCJul 24, 05:05 UTC7h 50m
2026-07-23 KAL273 MIA → VCP Jul 23, 11:30 UTCJul 23, 18:25 UTC6h 55m
2026-07-23 KAL273 MIA → VCP Jul 23, 02:40 UTCJul 23, 10:05 UTC7h 25m
2026-07-22 KAL320 CAN → ICN Jul 22, 15:30 UTCJul 22, 23:45 UTC8h 15m
2026-07-21 KAL314 HKG → ICN Jul 21, 19:10 UTCJul 21, 22:10 UTC3h 0m
2026-07-21 KAL313 - Jul 21, 15:25 UTCJul 21, 16:50 UTC1h 25m
2026-07-21 KAL313 - Jul 21, 13:55 UTCJul 21, 14:30 UTC35m
2026-07-20 KAL314 HKG → ICN Jul 20, 19:15 UTCJul 20, 22:15 UTC3h 0m
2026-07-20 KAL313 - Jul 20, 13:55 UTCJul 20, 16:50 UTC2h 55m
2026-07-19 KAL9210 LAX → SEA Jul 19, 20:25 UTCJul 20, 06:55 UTC10h 30m
2026-07-19 KAL9210 LAX → SEA Jul 19, 16:40 UTCJul 19, 18:30 UTC1h 50m
2026-07-19 KAL9209 ICN → LAX Jul 19, 03:05 UTCJul 19, 14:10 UTC11h 5m
2026-07-18 KAL8316 - Jul 18, 16:50 UTCJul 19, 00:00 UTC7h 10m
2026-07-18 KAL558 KKJ → ICN Jul 18, 10:05 UTCJul 18, 11:00 UTC55m
2026-07-18 KAL557 - Jul 18, 06:35 UTCJul 18, 07:25 UTC50m
2026-07-17 KAL252 JFK → ICN Jul 17, 13:15 UTCJul 18, 03:40 UTC14h 26m
2026-07-17 KAL251 - Jul 17, 08:10 UTCJul 17, 10:25 UTC2h 15m
2026-07-16 KAL251 - Jul 16, 22:59 UTCJul 17, 06:15 UTC7h 15m
2026-07-16 KAL251 - Jul 16, 13:30 UTCJul 16, 21:45 UTC8h 15m
2026-07-16 KAL318 - Jul 16, 08:40 UTCJul 16, 09:00 UTC20m
2026-07-16 KAL317 - Jul 16, 02:50 UTCJul 16, 03:15 UTC25m
2026-07-15 KAL314 HKG → ICN Jul 15, 19:50 UTCJul 15, 23:10 UTC3h 20m
2026-07-15 KAL313 - Jul 15, 13:40 UTCJul 15, 16:30 UTC2h 50m
2026-07-15 KAL342 - Jul 15, 06:50 UTCJul 15, 09:40 UTC2h 50m
2026-07-15 KAL341 - Jul 15, 00:45 UTCJul 15, 00:55 UTC10m
2026-07-14 KAL341 - Jul 14, 21:55 UTCJul 14, 22:10 UTC15m
2026-07-14 KAL341 - Jul 14, 16:40 UTCJul 14, 19:15 UTC2h 35m
2026-07-13 KAL250 JFK → ICN Jul 13, 16:30 UTCJul 14, 07:05 UTC14h 35m
2026-07-13 KAL249 - Jul 13, 07:35 UTCJul 13, 14:00 UTC6h 25m
2026-07-12 KAL249 ICN → ANC Jul 12, 18:01 UTCJul 13, 06:20 UTC12h 20m
2026-07-12 KAL8316 - Jul 12, 09:15 UTCJul 12, 15:45 UTC6h 30m
2026-07-11 KAL286 YYZ → ICN Jul 11, 13:00 UTCJul 12, 02:50 UTC13h 50m
2026-07-11 KAL285 ATL → YYZ Jul 11, 09:00 UTCJul 11, 10:55 UTC1h 55m
2026-07-10 KAL285 ANC → ATL Jul 10, 23:45 UTCJul 11, 06:15 UTC6h 30m
2026-07-10 KAL285 - Jul 10, 15:00 UTCJul 10, 22:35 UTC7h 36m
2026-07-10 KAL8314 - Jul 10, 10:05 UTCJul 10, 10:50 UTC45m
2026-07-10 KAL8314 - Jul 10, 07:35 UTCJul 10, 07:50 UTC15m
2026-07-10 KAL8313 - Jul 10, 02:40 UTCJul 10, 05:45 UTC3h 5m
2026-07-09 KAL314 - Jul 9, 19:15 UTCJul 9, 22:10 UTC2h 55m
2026-07-09 KAL313 ICN → HKG Jul 9, 13:50 UTCJul 9, 16:50 UTC3h 0m
2026-07-09 KAL9576 - Jul 9, 04:00 UTCJul 9, 04:20 UTC20m
2026-07-08 KAL9576 - Jul 8, 17:45 UTCJul 9, 03:10 UTC9h 25m
2026-07-08 KAL9565 VIE → MXP Jul 8, 13:05 UTCJul 8, 14:10 UTC1h 5m

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 HL8046 page for operator, model, and routing details .

Mode-S 71C046 frequently asked

What is Mode-S code 71C046?
71C046 is an ICAO 24-bit transponder address. Allocated to Korea, South. Assigned to HL8046.
Where is Mode-S 71C046 registered?
Mode-S code 71C046 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 71C046 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 21:30 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 71C046, octal 34340106, decimal 7,454,790.
What flights does 71C046 operate?
Mode-S 71C046 has broadcast 20 distinct callsigns, including KAL251, KAL249, KAL313, KAL285, KAL314.