Apparatus

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sensors Mode-S transponder

71C347

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

Currently assigned to HL8347 · BOEING 777-300ER

Hex
71C347
Octal
34341507
Decimal
7,455,559
Country
KR
Tail
HL8347
Type
B77W
Broadcasting now · callsign KAL438 · 35,000 ft
Flights observed
204
Distinct callsigns
20
Country
KR
Last broadcast
Jul 26, 09:15 UTC

Current position

71C347 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 71C347 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
KAL085 Korean Air 15 2026-07-22
KAL036 Korean Air 15 2026-07-25
KAL086 Korean Air 14 2026-07-23
KAL908 Korean Air 13 2026-06-10
KAL907 Korean Air 13 2026-06-09
KAL902 Korean Air 13 2026-07-03
KAL035 Korean Air 12 2026-07-25
KAL901 - 11 2026-07-02
KAL646 Korean Air 10 2026-07-01
KAL645 - 9 2026-07-01
KAL094 Korean Air 9 2026-07-19
KAL034 Korean Air 9 2026-06-30
KAL093 Korean Air 8 2026-07-19
KAL033 - 8 2026-06-30
KAL006 - 6 2026-07-12
KAL005 - 6 2026-07-11
KAL938 Korean Air 4 2026-05-25
KAL937 Korean Air 4 2026-05-24
KAL624 Korean Air 3 2026-06-18
KAL623 - 3 2026-06-18

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-25 KAL036 ATL → ICN Jul 25, 17:55 UTCJul 26, 09:15 UTC15h 21m
2026-07-25 KAL035 ICN → ATL Jul 25, 02:10 UTCJul 25, 15:25 UTC13h 15m
2026-07-24 KAL874 - Jul 24, 07:35 UTCJul 24, 08:00 UTC25m
2026-07-24 KAL873 - Jul 24, 04:30 UTCJul 24, 05:05 UTC35m
2026-07-23 KAL086 JFK → ICN Jul 23, 05:10 UTCJul 23, 19:30 UTC14h 20m
2026-07-22 KAL085 ICN → JFK Jul 22, 11:30 UTCJul 23, 00:50 UTC13h 20m
2026-07-21 KAL036 ATL → ICN Jul 21, 18:05 UTCJul 21, 22:35 UTC4h 30m
2026-07-21 KAL035 ICN → ATL Jul 21, 02:10 UTCJul 21, 15:00 UTC12h 50m
2026-07-20 KAL602 CEB → ICN Jul 20, 11:40 UTCJul 20, 21:05 UTC9h 25m
2026-07-19 KAL094 IAD → ICN Jul 19, 17:45 UTCJul 20, 08:05 UTC14h 20m
2026-07-19 KAL093 ICN → IAD Jul 19, 02:00 UTCJul 19, 15:10 UTC13h 10m
2026-07-17 KAL094 IAD → ICN Jul 17, 18:05 UTCJul 18, 08:20 UTC14h 16m
2026-07-17 KAL093 ICN → IAD Jul 17, 01:59 UTCJul 17, 15:10 UTC13h 10m
2026-07-15 KAL094 IAD → ICN Jul 15, 17:50 UTCJul 16, 07:55 UTC14h 5m
2026-07-15 KAL093 ICN → IAD Jul 15, 01:45 UTCJul 15, 14:35 UTC12h 50m
2026-07-14 KAL2012 HKG → ICN Jul 14, 17:15 UTCJul 14, 20:15 UTC3h 0m
2026-07-14 KAL2011 - Jul 14, 11:50 UTCJul 14, 14:45 UTC2h 55m
2026-07-13 KAL036 ATL → ICN Jul 13, 18:10 UTCJul 14, 09:05 UTC14h 55m
2026-07-13 KAL035 ICN → ATL Jul 13, 02:15 UTCJul 13, 15:40 UTC13h 25m
2026-07-12 KAL006 LAS → ICN Jul 12, 06:55 UTCJul 12, 18:50 UTC11h 55m
2026-07-11 KAL005 ICN → LAS Jul 11, 12:20 UTCJul 11, 23:40 UTC11h 20m
2026-07-10 KAL094 IAD → ICN Jul 10, 18:15 UTCJul 11, 08:30 UTC14h 15m
2026-07-10 KAL093 ICN → IAD Jul 10, 01:55 UTCJul 10, 15:15 UTC13h 20m
2026-07-09 KAL652 - Jul 9, 17:10 UTCJul 9, 21:55 UTC4h 45m
2026-07-09 KAL651 - Jul 9, 09:35 UTCJul 9, 14:25 UTC4h 50m
2026-07-08 KAL438 - Jul 8, 21:15 UTCJul 9, 02:30 UTC5h 15m
2026-07-08 KAL437 - Jul 8, 17:25 UTCJul 8, 17:45 UTC20m
2026-07-08 KAL437 - Jul 8, 11:20 UTCJul 8, 15:50 UTC4h 30m
2026-07-08 KAL926 - Jul 8, 07:00 UTCJul 8, 07:20 UTC20m
2026-07-07 KAL926 - Jul 7, 20:15 UTCJul 8, 06:05 UTC9h 50m
2026-07-07 KAL925 - Jul 7, 12:10 UTCJul 7, 17:10 UTC5h 0m
2026-07-07 KAL925 - Jul 7, 03:40 UTCJul 7, 04:00 UTC20m
2026-07-05 KAL036 ATL → ICN Jul 5, 17:55 UTCJul 6, 08:50 UTC14h 55m
2026-07-05 KAL035 ICN → ATL Jul 5, 02:10 UTCJul 5, 15:15 UTC13h 5m
2026-07-04 KAL086 JFK → ICN Jul 4, 06:35 UTCJul 4, 20:15 UTC13h 40m
2026-07-04 KAL085 ICN → JFK Jul 4, 03:35 UTCJul 4, 04:20 UTC45m
2026-07-03 KAL085 ICN → JFK Jul 3, 11:05 UTCJul 4, 01:25 UTC14h 20m
2026-07-03 KAL902 CDG → ICN Jul 3, 06:10 UTCJul 3, 06:35 UTC25m
2026-07-02 KAL902 CDG → ICN Jul 2, 18:55 UTCJul 3, 05:20 UTC10h 25m
2026-07-02 KAL901 - Jul 2, 02:55 UTCJul 2, 15:55 UTC13h 0m
2026-07-01 KAL646 SIN → ICN Jul 1, 20:50 UTCJul 1, 23:45 UTC2h 55m
2026-07-01 KAL646 SIN → ICN Jul 1, 17:40 UTCJul 1, 17:50 UTC10m
2026-07-01 KAL645 - Jul 1, 10:05 UTCJul 1, 16:00 UTC5h 55m
2026-06-30 KAL034 ATL → ICN Jun 30, 15:50 UTCJul 1, 06:25 UTC14h 35m
2026-06-30 KAL033 ICN → ATL Jun 30, 00:14 UTCJun 30, 13:10 UTC12h 56m
2026-06-28 KAL036 ATL → ICN Jun 28, 17:55 UTCJun 29, 08:29 UTC14h 35m
2026-06-28 KAL035 ICN → ATL Jun 28, 01:55 UTCJun 28, 15:05 UTC13h 10m
2026-06-27 KAL006 LAS → ICN Jun 27, 07:15 UTCJun 27, 20:04 UTC12h 50m
2026-06-26 KAL005 ICN → LAS Jun 26, 12:14 UTCJun 26, 22:29 UTC10h 15m
2026-06-26 KAL166 - Jun 26, 06:09 UTCJun 26, 06:29 UTC20m

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 HL8347 page for operator, model, and routing details .

Mode-S 71C347 frequently asked

What is Mode-S code 71C347?
71C347 is an ICAO 24-bit transponder address. Allocated to Korea, South. Assigned to HL8347.
Where is Mode-S 71C347 registered?
Mode-S code 71C347 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 71C347 broadcasting right now?
Yes. Mode-S 71C347 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 71C347, octal 34341507, decimal 7,455,559.
What flights does 71C347 operate?
Mode-S 71C347 has broadcast 20 distinct callsigns, including KAL085, KAL036, KAL086, KAL908, KAL907.