Apparatus

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sensors Mode-S transponder

71C041

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

Currently assigned to HL8041 · BOEING 777-300ER

Hex
71C041
Octal
34340101
Decimal
7,454,785
Country
KR
Tail
HL8041
Type
B77W
Broadcasting now · callsign KAL005 · 36,000 ft
Flights observed
145
Distinct callsigns
20
Country
KR
Last broadcast
7h ago

Current position

71C041 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 71C041 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
KAL908 - 21 2026-07-14
KAL907 - 20 2026-07-13
KAL645 - 9 2026-07-07
KAL646 Korean Air 8 2026-07-07
KAL005 - 8 2026-07-21
KAL094 - 7 2026-07-02
KAL035 Korean Air 7 2026-07-20
KAL006 - 7 2026-07-15
KAL902 Korean Air 6 2026-07-07
KAL093 - 6 2026-07-02
KAL036 Korean Air 6 2026-07-20
KAL901 - 5 2026-07-06
KAL034 - 5 2026-07-10
KAL033 - 5 2026-07-10
KAL086 - 4 2026-07-12
KAL085 - 4 2026-07-11
KAL938 Korean Air 3 2026-05-10
KAL937 Korean Air 2 2026-05-10
KAL416 - 2 2026-06-18
KAL2001 Korean Air 2 2026-05-23

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-21 KAL005 - Jul 21, 12:20 UTCJul 21, 13:55 UTC1h 35m
2026-07-20 KAL036 ATL → ICN Jul 20, 18:05 UTCJul 21, 08:55 UTC14h 50m
2026-07-20 KAL035 ICN → ATL Jul 20, 02:10 UTCJul 20, 15:30 UTC13h 20m
2026-07-18 KAL036 ATL → ICN Jul 18, 17:50 UTCJul 19, 08:15 UTC14h 25m
2026-07-18 KAL035 ICN → ATL Jul 18, 02:00 UTCJul 18, 15:25 UTC13h 26m
2026-07-16 KAL036 ATL → ICN Jul 16, 17:54 UTCJul 17, 08:04 UTC14h 10m
2026-07-16 KAL035 - Jul 16, 02:05 UTCJul 16, 15:25 UTC13h 20m
2026-07-15 KAL006 LAS → ICN Jul 15, 06:55 UTCJul 15, 19:00 UTC12h 5m
2026-07-14 KAL005 ICN → LAS Jul 14, 14:10 UTCJul 15, 01:25 UTC11h 14m
2026-07-14 KAL908 - Jul 14, 06:25 UTCJul 14, 06:50 UTC25m
2026-07-13 KAL908 - Jul 13, 19:05 UTCJul 14, 05:25 UTC10h 20m
2026-07-13 KAL907 - Jul 13, 03:25 UTCJul 13, 15:40 UTC12h 15m
2026-07-13 KAL907 - Jul 13, 02:15 UTCJul 13, 02:30 UTC15m
2026-07-12 KAL086 JFK → ICN Jul 12, 05:20 UTCJul 12, 19:45 UTC14h 25m
2026-07-11 KAL085 ICN → JFK Jul 11, 11:05 UTCJul 12, 00:45 UTC13h 40m
2026-07-10 KAL034 ATL → ICN Jul 10, 15:55 UTCJul 11, 06:01 UTC14h 6m
2026-07-10 KAL033 ICN → ATL Jul 10, 00:10 UTCJul 10, 13:30 UTC13h 20m
2026-07-08 KAL908 - Jul 8, 19:10 UTCJul 9, 06:50 UTC11h 40m
2026-07-08 KAL907 - Jul 8, 04:05 UTCJul 8, 16:30 UTC12h 25m
2026-07-08 KAL907 - Jul 8, 02:50 UTCJul 8, 03:05 UTC15m
2026-07-07 KAL646 SIN → ICN Jul 7, 21:10 UTCJul 7, 23:55 UTC2h 45m
2026-07-07 KAL646 SIN → ICN Jul 7, 17:55 UTCJul 7, 18:05 UTC10m
2026-07-07 KAL645 - Jul 7, 15:15 UTCJul 7, 15:40 UTC25m
2026-07-07 KAL645 - Jul 7, 10:00 UTCJul 7, 12:25 UTC2h 25m
2026-07-07 KAL902 CDG → ICN Jul 7, 06:20 UTCJul 7, 06:40 UTC20m
2026-07-06 KAL902 CDG → ICN Jul 6, 19:00 UTCJul 7, 05:20 UTC10h 20m
2026-07-06 KAL901 - Jul 6, 04:40 UTCJul 6, 16:35 UTC11h 55m
2026-07-06 KAL901 - Jul 6, 03:25 UTCJul 6, 03:45 UTC20m
2026-07-05 KAL646 SIN → ICN Jul 5, 20:50 UTCJul 5, 23:50 UTC3h 0m
2026-07-05 KAL646 SIN → ICN Jul 5, 17:55 UTCJul 5, 18:05 UTC10m
2026-07-05 KAL645 - Jul 5, 15:15 UTCJul 5, 15:35 UTC20m
2026-07-05 KAL645 - Jul 5, 10:00 UTCJul 5, 12:30 UTC2h 30m
2026-07-04 KAL034 ATL → ICN Jul 4, 15:55 UTCJul 5, 06:10 UTC14h 15m
2026-07-04 KAL033 ICN → ATL Jul 4, 00:20 UTCJul 4, 13:35 UTC13h 15m
2026-07-02 KAL094 IAD → ICN Jul 2, 17:55 UTCJul 3, 08:05 UTC14h 10m
2026-07-02 KAL093 - Jul 2, 01:55 UTCJul 2, 15:05 UTC13h 10m
2026-06-30 KAL038 ORD → ICN Jun 30, 17:25 UTCJul 1, 07:00 UTC13h 35m
2026-06-30 KAL037 ICN → ORD Jun 30, 02:10 UTCJun 30, 14:25 UTC12h 15m
2026-06-29 KAL908 - Jun 29, 06:29 UTCJun 29, 06:54 UTC25m
2026-06-28 KAL908 - Jun 28, 19:09 UTCJun 29, 05:34 UTC10h 25m
2026-06-28 KAL907 - Jun 28, 03:35 UTCJun 28, 15:49 UTC12h 15m
2026-06-28 KAL907 - Jun 28, 02:20 UTCJun 28, 02:34 UTC15m
2026-06-26 KAL034 ATL → ICN Jun 26, 15:54 UTCJun 27, 06:44 UTC14h 50m
2026-06-26 KAL033 ICN → ATL Jun 26, 00:05 UTCJun 26, 13:04 UTC13h 0m
2026-06-25 KAL908 - Jun 25, 06:25 UTCJun 25, 06:55 UTC30m
2026-06-24 KAL908 - Jun 24, 19:00 UTCJun 25, 05:39 UTC10h 40m
2026-06-24 KAL907 - Jun 24, 02:20 UTCJun 24, 15:49 UTC13h 30m
2026-06-21 KAL034 ATL → ICN Jun 21, 16:34 UTCJun 22, 06:54 UTC14h 20m
2026-06-21 KAL033 ICN → ATL Jun 21, 00:14 UTCJun 21, 13:59 UTC13h 45m
2026-06-20 KAL908 - Jun 20, 06:45 UTCJun 20, 07:14 UTC30m

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 HL8041 page for operator, model, and routing details .

Mode-S 71C041 frequently asked

What is Mode-S code 71C041?
71C041 is an ICAO 24-bit transponder address. Allocated to Korea, South. Assigned to HL8041.
Where is Mode-S 71C041 registered?
Mode-S code 71C041 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 71C041 broadcasting right now?
Yes. Mode-S 71C041 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 71C041, octal 34340101, decimal 7,454,785.
What flights does 71C041 operate?
Mode-S 71C041 has broadcast 20 distinct callsigns, including KAL908, KAL907, KAL645, KAL646, KAL005.