sensors Mode-S transponder

71C396

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

Currently assigned to HL8396 · AIRBUS A-321neo

Hex
71C396
Octal
34341626
Decimal
7,455,638
Country
KR
Tail
HL8396
Type
A21N
No current signal · last broadcast 23h ago
Flights observed
12
Distinct callsigns
6
Country
KR
Last broadcast
23h ago

Last known position

Most recent position reported by Mode-S 71C396.

Country allocation

The ICAO 24-bit address 71C396 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 6 distinct

Callsign Airline Flights Last seen
ABL712 Air Busan 4 2026-04-13
ABL792 - 2 2026-04-14
ABL791 - 2 2026-04-14
ABL112 Air Busan 2 2026-04-13
ABL711 - 1 2026-04-13
ABL111 - 1 2026-04-13

Recent flights last 12

DateFlightRouteTakeoffLandingDuration
2026-04-14 ABL792 - Apr 14, 09:10 UTCApr 14, 09:30 UTC20m
2026-04-14 ABL791 - Apr 14, 07:20 UTCApr 14, 07:40 UTC20m
2026-04-13 ABL712 CEB → PUS Apr 13, 20:05 UTCApr 13, 23:30 UTC3h 25m
2026-04-13 ABL712 CEB → PUS Apr 13, 18:10 UTCApr 13, 20:10 UTC2h 0m
2026-04-13 ABL712 CEB → PUS Apr 13, 15:50 UTCApr 13, 18:50 UTC3h 0m
2026-04-13 ABL711 - Apr 13, 13:50 UTCApr 13, 16:05 UTC2h 15m
2026-04-13 ABL792 - Apr 13, 09:20 UTCApr 13, 09:40 UTC20m
2026-04-13 ABL791 - Apr 13, 07:30 UTCApr 13, 08:00 UTC30m
2026-04-13 ABL111 - Apr 13, 02:20 UTCApr 13, 03:35 UTC1h 15m
2026-04-13 ABL112 PUS → NRT Apr 13, 00:20 UTCApr 13, 00:55 UTC35m
2026-04-13 ABL112 PUS → NRT Apr 13, 00:05 UTCApr 13, 00:55 UTC50m
2026-04-12 ABL712 CEB → PUS Apr 12, 18:05 UTCApr 12, 20:15 UTC2h 10m

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 HL8396 page for operator, model, and routing details .

Mode-S 71C396 frequently asked

What is Mode-S code 71C396?
71C396 is an ICAO 24-bit transponder address. Allocated to Korea, South. Assigned to HL8396.
Where is Mode-S 71C396 registered?
Mode-S code 71C396 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 71C396 broadcasting right now?
No active broadcast right now. Last signal was 23h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 71C396, octal 34341626, decimal 7,455,638.
What flights does 71C396 operate?
Mode-S 71C396 has broadcast 6 distinct callsigns, including ABL712, ABL792, ABL791, ABL112, ABL711.