sensors Mode-S transponder

71C352

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

Currently assigned to HL8352 · BOEING 737 MAX 8

Hex
71C352
Octal
34341522
Decimal
7,455,570
Country
KR
Tail
HL8352
Type
B38M
Broadcasting now · 2,275 ft
Flights observed
5
Distinct callsigns
5
Country
KR
Last broadcast
12h ago

Current position

71C352 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 71C352 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 5 distinct

Callsign Airline Flights Last seen
KAL892 Korean Air 1 2026-04-13
KAL8796 - 1 2026-04-13
KAL8795 - 1 2026-04-13
KAL841 Korean Air 1 2026-04-13
KAL781 - 1 2026-04-14

Recent flights last 5

DateFlightRouteTakeoffLandingDuration
2026-04-14 KAL781 - Apr 14, 09:50 UTCApr 14, 10:20 UTC30m
2026-04-13 KAL841 ICN → TAO Apr 13, 23:15 UTCApr 13, 23:30 UTC15m
2026-04-13 KAL8796 - Apr 13, 09:30 UTCApr 13, 10:30 UTC1h 0m
2026-04-13 KAL8795 - Apr 13, 06:55 UTCApr 13, 07:20 UTC25m
2026-04-13 KAL892 PVG → ICN Apr 13, 02:05 UTCApr 13, 02:45 UTC40m

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 HL8352 page for operator, model, and routing details .

Mode-S 71C352 frequently asked

What is Mode-S code 71C352?
71C352 is an ICAO 24-bit transponder address. Allocated to Korea, South. Assigned to HL8352.
Where is Mode-S 71C352 registered?
Mode-S code 71C352 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 71C352 broadcasting right now?
Yes. Mode-S 71C352 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 71C352, octal 34341522, decimal 7,455,570.
What flights does 71C352 operate?
Mode-S 71C352 has broadcast 5 distinct callsigns, including KAL892, KAL8796, KAL8795, KAL841, KAL781.