Apparatus

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sensors Mode-S transponder

71C346

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

Currently assigned to HL8346 · BOEING 777-300ER

Hex
71C346
Octal
34341506
Decimal
7,455,558
Country
KR
Tail
HL8346
Type
B77W
Broadcasting now · callsign KAL901 · 38,000 ft
Flights observed
164
Distinct callsigns
20
Country
KR
Last broadcast
2h ago

Current position

71C346 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 71C346 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
KAL901 - 21 2026-07-14
KAL902 Korean Air 18 2026-07-08
KAL085 - 14 2026-07-10
KAL086 - 13 2026-07-11
KAL646 - 12 2026-07-13
KAL908 Korean Air 11 2026-06-07
KAL645 - 10 2026-07-13
KAL907 Korean Air 8 2026-06-06
KAL093 - 7 2026-06-28
KAL094 - 6 2026-06-28
KAL034 - 6 2026-07-12
KAL033 - 6 2026-07-12
KAL036 - 5 2026-06-22
KAL035 - 5 2026-06-22
KAL766 Korean Air 3 2026-04-30
KAL765 Korean Air 3 2026-04-30
KAL938 Korean Air 2 2026-05-14
KAL006 - 2 2026-05-01
KAL005 - 2 2026-04-30
KAL937 Korean Air 1 2026-05-13

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 KAL901 - Jul 14, 04:05 UTCJul 14, 12:30 UTC8h 25m
2026-07-14 KAL901 - Jul 14, 02:50 UTCJul 14, 03:10 UTC20m
2026-07-13 KAL646 - Jul 13, 21:05 UTCJul 14, 00:20 UTC3h 15m
2026-07-13 KAL645 - Jul 13, 10:15 UTCJul 13, 15:50 UTC5h 35m
2026-07-12 KAL034 ATL → ICN Jul 12, 16:05 UTCJul 13, 06:20 UTC14h 15m
2026-07-12 KAL033 ICN → ATL Jul 12, 00:10 UTCJul 12, 13:30 UTC13h 20m
2026-07-11 KAL086 JFK → ICN Jul 11, 05:15 UTCJul 11, 19:25 UTC14h 10m
2026-07-10 KAL085 ICN → JFK Jul 10, 11:05 UTCJul 11, 00:40 UTC13h 35m
2026-07-09 KAL034 ATL → ICN Jul 9, 15:55 UTCJul 10, 06:25 UTC14h 30m
2026-07-09 KAL033 ICN → ATL Jul 9, 00:15 UTCJul 9, 13:30 UTC13h 15m
2026-07-08 KAL902 CDG → ICN Jul 8, 06:10 UTCJul 8, 06:30 UTC20m
2026-07-07 KAL902 CDG → ICN Jul 7, 19:10 UTCJul 8, 05:15 UTC10h 5m
2026-07-07 KAL901 - Jul 7, 04:30 UTCJul 7, 16:25 UTC11h 55m
2026-07-07 KAL901 - Jul 7, 03:10 UTCJul 7, 03:25 UTC15m
2026-07-06 KAL086 JFK → ICN Jul 6, 06:20 UTCJul 6, 20:15 UTC13h 55m
2026-07-05 KAL085 ICN → JFK Jul 5, 10:55 UTCJul 6, 00:10 UTC13h 15m
2026-07-04 KAL902 CDG → ICN Jul 4, 05:55 UTCJul 4, 06:25 UTC30m
2026-07-03 KAL902 CDG → ICN Jul 3, 18:55 UTCJul 4, 05:05 UTC10h 10m
2026-07-03 KAL901 - Jul 3, 04:00 UTCJul 3, 16:15 UTC12h 15m
2026-07-03 KAL901 - Jul 3, 02:50 UTCJul 3, 03:05 UTC15m
2026-07-02 KAL646 SIN → ICN Jul 2, 20:55 UTCJul 2, 23:45 UTC2h 50m
2026-07-02 KAL646 SIN → ICN Jul 2, 17:50 UTCJul 2, 18:00 UTC10m
2026-07-02 KAL645 - Jul 2, 15:30 UTCJul 2, 15:50 UTC20m
2026-07-02 KAL645 - Jul 2, 10:20 UTCJul 2, 13:00 UTC2h 40m
2026-07-02 KAL902 CDG → ICN Jul 2, 06:41 UTCJul 2, 07:05 UTC24m
2026-07-01 KAL902 CDG → ICN Jul 1, 19:20 UTCJul 1, 23:40 UTC4h 20m
2026-07-01 KAL901 - Jul 1, 04:00 UTCJul 1, 16:05 UTC12h 5m
2026-07-01 KAL901 - Jul 1, 02:55 UTCJul 1, 03:05 UTC10m
2026-06-30 KAL086 JFK → ICN Jun 30, 05:50 UTCJun 30, 20:05 UTC14h 15m
2026-06-29 KAL085 ICN → JFK Jun 29, 11:14 UTCJun 30, 00:49 UTC13h 35m
2026-06-28 KAL094 IAD → ICN Jun 28, 17:50 UTCJun 29, 08:24 UTC14h 35m
2026-06-28 KAL093 ICN → IAD Jun 28, 02:05 UTCJun 28, 15:05 UTC13h 0m
2026-06-27 KAL902 CDG → ICN Jun 27, 06:19 UTCJun 27, 06:50 UTC30m
2026-06-26 KAL902 CDG → ICN Jun 26, 18:54 UTCJun 27, 05:29 UTC10h 35m
2026-06-26 KAL901 - Jun 26, 04:04 UTCJun 26, 16:09 UTC12h 5m
2026-06-26 KAL901 - Jun 26, 02:54 UTCJun 26, 03:10 UTC15m
2026-06-25 KAL646 SIN → ICN Jun 25, 21:10 UTCJun 25, 23:59 UTC2h 50m
2026-06-25 KAL646 SIN → ICN Jun 25, 18:10 UTCJun 25, 18:19 UTC10m
2026-06-25 KAL645 - Jun 25, 10:04 UTCJun 25, 12:50 UTC2h 45m
2026-06-24 KAL034 ATL → ICN Jun 24, 16:09 UTCJun 25, 06:50 UTC14h 40m
2026-06-24 KAL033 ICN → ATL Jun 24, 00:05 UTCJun 24, 12:44 UTC12h 40m
2026-06-22 KAL036 ATL → ICN Jun 22, 18:04 UTCJun 23, 08:35 UTC14h 30m
2026-06-22 KAL035 ICN → ATL Jun 22, 02:14 UTCJun 22, 15:24 UTC13h 10m
2026-06-21 KAL902 CDG → ICN Jun 21, 06:14 UTCJun 21, 06:44 UTC30m
2026-06-20 KAL902 CDG → ICN Jun 20, 19:09 UTCJun 21, 05:30 UTC10h 20m
2026-06-20 KAL901 - Jun 20, 04:20 UTCJun 20, 16:34 UTC12h 15m
2026-06-20 KAL901 - Jun 20, 03:04 UTCJun 20, 03:19 UTC15m
2026-06-19 KAL086 JFK → ICN Jun 19, 05:19 UTCJun 19, 19:19 UTC14h 0m
2026-06-18 KAL085 ICN → JFK Jun 18, 11:10 UTCJun 19, 00:49 UTC13h 39m
2026-06-17 KAL094 IAD → ICN Jun 17, 17:55 UTCJun 18, 08:30 UTC14h 35m

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 HL8346 page for operator, model, and routing details .

Mode-S 71C346 frequently asked

What is Mode-S code 71C346?
71C346 is an ICAO 24-bit transponder address. Allocated to Korea, South. Assigned to HL8346.
Where is Mode-S 71C346 registered?
Mode-S code 71C346 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 71C346 broadcasting right now?
Yes. Mode-S 71C346 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 71C346, octal 34341506, decimal 7,455,558.
What flights does 71C346 operate?
Mode-S 71C346 has broadcast 20 distinct callsigns, including KAL901, KAL902, KAL085, KAL086, KAL646.