Apparatus

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sensors Mode-S transponder

71C005

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

Currently assigned to HL8005 · BOEING 777-200LR

Hex
71C005
Octal
34340005
Decimal
7,454,725
Country
KR
Tail
HL8005
Type
B77L
No current signal · last broadcast 3h ago
Flights observed
238
Distinct callsigns
20
Country
KR
Last broadcast
3h ago

Last known position

Most recent position reported by Mode-S 71C005.

Country allocation

The ICAO 24-bit address 71C005 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
KAL249 Korean Air 21 2026-06-04
KAL8250 Korean Air 11 2026-06-05
KAL567 - 9 2026-07-05
KAL251 - 9 2026-07-03
KAL542 - 8 2026-06-24
KAL8258 Korean Air 7 2026-05-21
KAL9232 - 6 2026-04-13
KAL541 - 6 2026-06-24
KAL504 - 6 2026-06-26
KAL285 - 6 2026-06-27
KAL257 - 6 2026-07-12
KAL568 - 5 2026-07-06
KAL313 - 5 2026-07-04
KAL231 Korean Air 5 2026-04-27
KAL9575 - 4 2026-06-19
KAL8313 Korean Air 4 2026-05-06
KAL8257 Korean Air 4 2026-05-20
KAL8231 Korean Air 4 2026-05-18
KAL314 Korean Air 4 2026-07-04
KAL278 Korean Air 4 2026-05-07

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-13 KAL319 ICN → ICN Jul 13, 15:20 UTCJul 13, 23:30 UTC8h 10m
2026-07-13 KAL9552 - Jul 13, 10:00 UTCJul 13, 11:50 UTC1h 50m
2026-07-13 KAL9551 - Jul 13, 05:40 UTCJul 13, 07:40 UTC2h 0m
2026-07-12 KAL258 - Jul 12, 09:45 UTCJul 13, 00:15 UTC14h 30m
2026-07-12 KAL257 - Jul 12, 00:40 UTCJul 12, 07:01 UTC6h 20m
2026-07-11 KAL257 ICN → ANC Jul 11, 15:30 UTCJul 11, 23:10 UTC7h 40m
2026-07-11 KAL224 - Jul 11, 10:35 UTCJul 11, 12:30 UTC1h 55m
2026-07-10 KAL224 - Jul 10, 21:30 UTCJul 11, 08:25 UTC10h 55m
2026-07-10 KAL207 - Jul 10, 08:10 UTCJul 10, 18:55 UTC10h 45m
2026-07-09 KAL284 YYZ → ICN Jul 9, 11:15 UTCJul 10, 00:50 UTC13h 35m
2026-07-09 KAL284 - Jul 9, 07:50 UTCJul 9, 08:55 UTC1h 5m
2026-07-09 KAL283 ANC → ORD Jul 9, 00:20 UTCJul 9, 05:55 UTC5h 35m
2026-07-08 KAL283 ICN → ANC Jul 8, 15:00 UTCJul 8, 23:00 UTC8h 0m
2026-07-08 KAL228 - Jul 8, 07:10 UTCJul 8, 08:10 UTC1h 0m
2026-07-07 KAL228 - Jul 7, 16:50 UTCJul 8, 04:35 UTC11h 45m
2026-07-07 KAL207 - Jul 7, 03:45 UTCJul 7, 14:45 UTC11h 0m
2026-07-06 KAL316 - Jul 6, 14:25 UTCJul 6, 21:55 UTC7h 30m
2026-07-06 KAL568 - Jul 6, 05:45 UTCJul 6, 06:05 UTC20m
2026-07-05 KAL568 - Jul 5, 19:05 UTCJul 6, 04:50 UTC9h 45m
2026-07-05 KAL567 VIE → ZRH Jul 5, 15:30 UTCJul 5, 16:35 UTC1h 5m
2026-07-05 KAL567 - Jul 5, 02:35 UTCJul 5, 13:05 UTC10h 30m
2026-07-05 KAL567 - Jul 5, 01:25 UTCJul 5, 01:40 UTC15m
2026-07-04 KAL314 HKG → HKG Jul 4, 19:15 UTCJul 4, 22:15 UTC3h 0m
2026-07-04 KAL313 - Jul 4, 13:45 UTCJul 4, 16:55 UTC3h 10m
2026-07-04 KAL558 - Jul 4, 10:05 UTCJul 4, 10:55 UTC50m
2026-07-04 KAL557 - Jul 4, 06:25 UTCJul 4, 07:15 UTC50m
2026-07-03 KAL252 JFK → ICN Jul 3, 13:05 UTCJul 4, 04:25 UTC15h 20m
2026-07-03 KAL251 - Jul 3, 07:50 UTCJul 3, 10:05 UTC2h 15m
2026-07-02 KAL251 ANC → MIA Jul 2, 21:55 UTCJul 3, 05:25 UTC7h 30m
2026-07-02 KAL251 - Jul 2, 13:25 UTCJul 2, 20:45 UTC7h 20m
2026-07-02 KAL530 - Jul 2, 03:40 UTCJul 2, 04:00 UTC20m
2026-07-01 KAL530 - Jul 1, 16:50 UTCJul 1, 20:40 UTC3h 50m
2026-07-01 KAL529 - Jul 1, 01:35 UTCJul 1, 14:05 UTC12h 30m
2026-06-30 KAL252 JFK → ICN Jun 30, 05:40 UTCJun 30, 19:50 UTC14h 10m
2026-06-30 KAL251 - Jun 30, 00:49 UTCJun 30, 03:15 UTC2h 25m
2026-06-29 KAL251 - Jun 29, 14:39 UTCJun 29, 22:15 UTC7h 35m
2026-06-29 KAL251 - Jun 29, 05:59 UTCJun 29, 13:30 UTC7h 30m
2026-06-28 KAL362 - Jun 28, 21:20 UTCJun 29, 01:00 UTC3h 40m
2026-06-28 KAL361 - Jun 28, 14:50 UTCJun 28, 18:49 UTC4h 0m
2026-06-27 KAL286 YYZ → ICN Jun 27, 12:50 UTCJun 28, 03:05 UTC14h 15m
2026-06-27 KAL285 ATL → YYZ Jun 27, 08:44 UTCJun 27, 10:34 UTC1h 50m
2026-06-26 KAL285 ANC → ATL Jun 26, 23:34 UTCJun 27, 06:19 UTC6h 45m
2026-06-26 KAL285 - Jun 26, 14:55 UTCJun 26, 22:10 UTC7h 15m
2026-06-26 KAL504 - Jun 26, 11:40 UTCJun 26, 12:05 UTC25m
2026-06-26 KAL504 - Jun 26, 00:10 UTCJun 26, 10:50 UTC10h 40m
2026-06-25 KAL504 - Jun 25, 20:19 UTCJun 25, 21:05 UTC45m
2026-06-25 KAL503 - Jun 25, 03:50 UTCJun 25, 17:09 UTC13h 20m
2026-06-24 KAL542 - Jun 24, 22:35 UTCJun 24, 22:55 UTC20m
2026-06-24 KAL542 - Jun 24, 11:29 UTCJun 24, 21:44 UTC10h 15m
2026-06-24 KAL541 VIE → OSL Jun 24, 07:34 UTCJun 24, 09:34 UTC2h 0m

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 HL8005 page for operator, model, and routing details .

Mode-S 71C005 frequently asked

What is Mode-S code 71C005?
71C005 is an ICAO 24-bit transponder address. Allocated to Korea, South. Assigned to HL8005.
Where is Mode-S 71C005 registered?
Mode-S code 71C005 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 71C005 broadcasting right now?
No active broadcast right now. Last signal was 3h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 71C005, octal 34340005, decimal 7,454,725.
What flights does 71C005 operate?
Mode-S 71C005 has broadcast 20 distinct callsigns, including KAL249, KAL8250, KAL567, KAL251, KAL542.