sensors Mode-S transponder

71C336

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

Currently assigned to HL8336 · BOEING 737-800

Hex
71C336
Octal
34341466
Decimal
7,455,542
Country
KR
Tail
HL8336
Type
B738
No current signal · last broadcast 15h ago
Flights observed
11
Distinct callsigns
10
Country
KR
Last broadcast
15h ago

Last known position

Most recent position reported by Mode-S 71C336.

Country allocation

The ICAO 24-bit address 71C336 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 10 distinct

Callsign Airline Flights Last seen
JJA1328 - 2 2026-04-14
JJA142 - 1 2026-04-13
JJA139 - 1 2026-04-13
JJA1327 - 1 2026-04-14
JJA1325 Jeju Air 1 2026-04-13
JJA129 - 1 2026-04-13
JJA128 - 1 2026-04-13
JJA122 - 1 2026-04-13
JJA117 - 1 2026-04-13
JJA108 - 1 2026-04-13

Recent flights last 11

DateFlightRouteTakeoffLandingDuration
2026-04-14 JJA1328 - Apr 14, 09:10 UTCApr 14, 09:15 UTC5m
2026-04-14 JJA1328 - Apr 14, 07:55 UTCApr 14, 09:05 UTC1h 10m
2026-04-14 JJA1327 - Apr 14, 05:15 UTCApr 14, 06:15 UTC1h 0m
2026-04-13 JJA1325 GMP → KIX Apr 13, 23:20 UTCApr 13, 23:40 UTC20m
2026-04-13 JJA142 - Apr 13, 13:15 UTCApr 13, 13:50 UTC35m
2026-04-13 JJA139 - Apr 13, 10:55 UTCApr 13, 11:30 UTC35m
2026-04-13 JJA128 - Apr 13, 09:15 UTCApr 13, 09:55 UTC40m
2026-04-13 JJA129 - Apr 13, 07:10 UTCApr 13, 07:45 UTC35m
2026-04-13 JJA122 - Apr 13, 05:35 UTCApr 13, 06:10 UTC35m
2026-04-13 JJA117 - Apr 13, 03:25 UTCApr 13, 04:00 UTC35m
2026-04-13 JJA108 - Apr 13, 01:35 UTCApr 13, 02:15 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 HL8336 page for operator, model, and routing details .

Mode-S 71C336 frequently asked

What is Mode-S code 71C336?
71C336 is an ICAO 24-bit transponder address. Allocated to Korea, South. Assigned to HL8336.
Where is Mode-S 71C336 registered?
Mode-S code 71C336 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 71C336 broadcasting right now?
No active broadcast right now. Last signal was 15h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 71C336, octal 34341466, decimal 7,455,542.
What flights does 71C336 operate?
Mode-S 71C336 has broadcast 10 distinct callsigns, including JJA1328, JJA142, JJA139, JJA1327, JJA1325.