sensors Mode-S transponder

71C338

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

Currently assigned to HL8338 · BOEING 737-800

Hex
71C338
Octal
34341470
Decimal
7,455,544
Country
KR
Tail
HL8338
Type
B738
No current signal · last broadcast 1d ago
Flights observed
5
Distinct callsigns
4
Country
KR
Last broadcast
1d ago

Last known position

Most recent position reported by Mode-S 71C338.

Country allocation

The ICAO 24-bit address 71C338 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 4 distinct

Callsign Airline Flights Last seen
AIH914 - 2 2026-04-14
AIH913 Alpine Air Chile 1 2026-04-13
AIH376 - 1 2026-04-13
AIH375 - 1 2026-04-13

Recent flights last 5

DateFlightRouteTakeoffLandingDuration
2026-04-14 AIH914 - Apr 14, 06:45 UTCApr 14, 06:55 UTC10m
2026-04-13 AIH376 - Apr 13, 22:50 UTCApr 13, 23:35 UTC45m
2026-04-13 AIH375 - Apr 13, 14:15 UTCApr 13, 15:00 UTC45m
2026-04-13 AIH914 - Apr 13, 05:55 UTCApr 13, 06:15 UTC20m
2026-04-13 AIH913 GLA → FUE Apr 13, 02:55 UTCApr 13, 03:05 UTC10m

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 HL8338 page for operator, model, and routing details .

Mode-S 71C338 frequently asked

What is Mode-S code 71C338?
71C338 is an ICAO 24-bit transponder address. Allocated to Korea, South. Assigned to HL8338.
Where is Mode-S 71C338 registered?
Mode-S code 71C338 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 71C338 broadcasting right now?
No active broadcast right now. Last signal was 1d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 71C338, octal 34341470, decimal 7,455,544.
What flights does 71C338 operate?
Mode-S 71C338 has broadcast 4 distinct callsigns, including AIH914, AIH913, AIH376, AIH375.