Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

71C350

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

Currently assigned to HL8350 · BOEING 737 MAX 8

Hex
71C350
Octal
34341520
Decimal
7,455,568
Country
KR
Tail
HL8350
Type
B38M
No current signal · last broadcast 1h ago
Flights observed
115
Distinct callsigns
20
Country
KR
Last broadcast
1h ago

Last known position

Most recent position reported by Mode-S 71C350.

Country allocation

The ICAO 24-bit address 71C350 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
KAL713 Korean Air 15 2026-05-24
KAL714 Korean Air 13 2026-05-24
KAL833 Korean Air 12 2026-05-29
KAL834 Korean Air 10 2026-05-29
KAL726 Korean Air 7 2026-05-10
KAL806 Korean Air 5 2026-05-09
KAL725 Korean Air 5 2026-05-10
KAL805 Korean Air 4 2026-04-29
KAL795 Korean Air 4 2026-05-30
KAL782 Korean Air 4 2026-04-29
KAL721 Korean Air 4 2026-05-20
KAL841 Korean Air 3 2026-05-28
KAL1432 Korean Air 3 2026-05-19
KAL1431 Korean Air 3 2026-05-19
KAL127 Korean Air 3 2026-05-27
KAL842 Korean Air 2 2026-05-29
KAL804 Korean Air 2 2026-05-25
KAL803 Korean Air 2 2026-05-25
KAL796 Korean Air 2 2026-05-26
KAL781 Korean Air 2 2026-04-17

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-30 KAL795 ICN → CTS May 30, 07:35 UTCMay 30, 08:00 UTC25m
2026-05-29 KAL834 SHE → ICN May 29, 10:20 UTCMay 29, 10:40 UTC20m
2026-05-29 KAL833 ICN → SHE May 29, 06:20 UTCMay 29, 06:35 UTC15m
2026-05-29 KAL842 TAO → ICN May 29, 02:55 UTCMay 29, 03:15 UTC20m
2026-05-28 KAL841 ICN → TAO May 28, 23:15 UTCMay 28, 23:35 UTC20m
2026-05-28 KAL795 ICN → CTS May 28, 07:50 UTCMay 28, 11:40 UTC3h 50m
2026-05-27 KAL127 ICN → FOC May 27, 23:30 UTCMay 28, 05:40 UTC6h 10m
2026-05-27 KAL834 SHE → ICN May 27, 10:05 UTCMay 27, 10:30 UTC25m
2026-05-27 KAL833 ICN → SHE May 27, 06:15 UTCMay 27, 06:34 UTC20m
2026-05-26 KAL796 CTS → ICN May 26, 10:34 UTCMay 26, 11:34 UTC1h 0m
2026-05-26 KAL795 ICN → CTS May 26, 07:45 UTCMay 26, 08:19 UTC35m
2026-05-25 KAL127 ICN → FOC May 25, 23:40 UTCMay 26, 05:40 UTC6h 0m
2026-05-25 KAL804 TSN → ICN May 25, 08:00 UTCMay 25, 08:20 UTC20m
2026-05-25 KAL803 ICN → TSN May 25, 03:55 UTCMay 25, 04:10 UTC15m
2026-05-24 KAL714 NRT → ICN May 24, 12:20 UTCMay 24, 14:25 UTC2h 5m
2026-05-24 KAL713 ICN → NRT May 24, 08:45 UTCMay 24, 10:35 UTC1h 50m
2026-05-23 KAL834 SHE → ICN May 23, 10:05 UTCMay 23, 10:30 UTC25m
2026-05-23 KAL833 ICN → SHE May 23, 06:05 UTCMay 23, 06:20 UTC15m
2026-05-23 KAL1408 PUS → ICN May 23, 01:55 UTCMay 23, 02:40 UTC44m
2026-05-22 KAL1403 ICN → PUS May 22, 23:35 UTCMay 23, 00:05 UTC30m
2026-05-22 KAL834 SHE → ICN May 22, 10:25 UTCMay 22, 10:45 UTC20m
2026-05-22 KAL833 ICN → SHE May 22, 06:20 UTCMay 22, 06:35 UTC15m
2026-05-21 KAL796 CTS → ICN May 21, 10:50 UTCMay 21, 11:45 UTC55m
2026-05-21 KAL795 ICN → CTS May 21, 07:45 UTCMay 21, 08:45 UTC1h 0m
2026-05-21 KAL722 KIX → ICN May 21, 00:25 UTCMay 21, 02:00 UTC1h 35m
2026-05-20 KAL721 ICN → KIX May 20, 10:15 UTCMay 20, 11:40 UTC1h 25m
2026-05-20 KAL9718 TOY → ICN May 20, 06:50 UTCMay 20, 08:25 UTC1h 35m
2026-05-20 KAL9717 ICN → TOY May 20, 03:50 UTCMay 20, 04:55 UTC1h 6m
2026-05-19 KAL1432 TAE → ICN May 19, 23:00 UTCMay 19, 23:40 UTC40m
2026-05-19 KAL1431 ICN → TAE May 19, 10:50 UTCMay 19, 11:30 UTC40m
2026-05-19 KAL804 TSN → ICN May 19, 08:00 UTCMay 19, 08:20 UTC20m
2026-05-19 KAL803 ICN → TSN May 19, 04:10 UTCMay 19, 04:20 UTC10m
2026-05-18 KAL714 NRT → ICN May 18, 12:10 UTCMay 18, 14:20 UTC2h 10m
2026-05-18 KAL713 ICN → NRT May 18, 08:35 UTCMay 18, 10:30 UTC1h 55m
2026-05-17 KAL834 SHE → ICN May 17, 10:05 UTCMay 17, 10:25 UTC20m
2026-05-17 KAL833 ICN → SHE May 17, 05:55 UTCMay 17, 06:05 UTC10m
2026-05-16 KAL834 SHE → ICN May 16, 10:01 UTCMay 16, 10:25 UTC25m
2026-05-16 KAL833 ICN → SHE May 16, 05:51 UTCMay 16, 06:06 UTC15m
2026-05-15 KAL834 SHE → ICN May 15, 10:25 UTCMay 15, 10:40 UTC15m
2026-05-15 KAL833 ICN → SHE May 15, 06:10 UTCMay 15, 06:20 UTC10m
2026-05-14 KAL834 SHE → ICN May 14, 10:10 UTCMay 14, 10:25 UTC15m
2026-05-14 KAL833 ICN → SHE May 14, 05:55 UTCMay 14, 06:10 UTC15m
2026-05-13 KAL834 SHE → ICN May 13, 10:00 UTCMay 13, 10:10 UTC10m
2026-05-12 KAL841 ICN → TAO May 12, 23:10 UTCMay 12, 23:35 UTC25m
2026-05-12 KAL833 ICN → SHE May 12, 06:00 UTCMay 12, 06:10 UTC10m
2026-05-11 KAL721 ICN → KIX May 11, 10:00 UTCMay 11, 11:35 UTC1h 35m
2026-05-10 KAL726 KIX → ICN May 10, 09:30 UTCMay 10, 10:55 UTC1h 25m
2026-05-10 KAL725 ICN → KIX May 10, 06:40 UTCMay 10, 07:55 UTC1h 15m
2026-05-09 KAL714 NRT → ICN May 9, 12:10 UTCMay 9, 14:30 UTC2h 20m
2026-05-09 KAL713 ICN → NRT May 9, 08:40 UTCMay 9, 10:35 UTC1h 55m

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 HL8350 page for operator, model, and routing details .

Mode-S 71C350 frequently asked

What is Mode-S code 71C350?
71C350 is an ICAO 24-bit transponder address. Allocated to Korea, South. Assigned to HL8350.
Where is Mode-S 71C350 registered?
Mode-S code 71C350 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 71C350 broadcasting right now?
No active broadcast right now. Last signal was 1h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 71C350, octal 34341520, decimal 7,455,568.
What flights does 71C350 operate?
Mode-S 71C350 has broadcast 20 distinct callsigns, including KAL713, KAL714, KAL833, KAL834, KAL726.