sensors Mode-S transponder

71C059

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

Currently assigned to HL8059 · AIRBUS A-321

Hex
71C059
Octal
34340131
Decimal
7,454,809
Country
KR
Tail
HL8059
Type
A321
No current signal · last broadcast 12h ago
Flights observed
13
Distinct callsigns
12
Country
KR
Last broadcast
12h ago

Last known position

Most recent position reported by Mode-S 71C059.

Country allocation

The ICAO 24-bit address 71C059 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 12 distinct

Callsign Airline Flights Last seen
AAR8707 - 2 2026-04-14
AAR8995 - 1 2026-04-13
AAR8986 - 1 2026-04-13
AAR8985 - 1 2026-04-14
AAR8981 - 1 2026-04-13
AAR8956 - 1 2026-04-13
AAR8936 - 1 2026-04-14
AAR8921 Asiana Airlines 1 2026-04-13
AAR8900 - 1 2026-04-13
AAR8708 - 1 2026-04-14
AAR8233 - 1 2026-04-13
AAR8232 - 1 2026-04-13

Recent flights last 13

DateFlightRouteTakeoffLandingDuration
2026-04-14 AAR8985 - Apr 14, 10:35 UTCApr 14, 11:05 UTC30m
2026-04-14 AAR8708 - Apr 14, 08:40 UTCApr 14, 09:05 UTC25m
2026-04-14 AAR8707 - Apr 14, 07:10 UTCApr 14, 07:40 UTC30m
2026-04-14 AAR8707 - Apr 14, 06:55 UTCApr 14, 07:10 UTC15m
2026-04-14 AAR8936 - Apr 14, 05:15 UTCApr 14, 05:50 UTC35m
2026-04-13 AAR8921 GMP → CJU Apr 13, 23:35 UTCApr 13, 23:40 UTC5m
2026-04-13 AAR8900 - Apr 13, 21:45 UTCApr 13, 22:25 UTC40m
2026-04-13 AAR8995 - Apr 13, 12:25 UTCApr 13, 13:00 UTC35m
2026-04-13 AAR8986 - Apr 13, 10:50 UTCApr 13, 11:25 UTC35m
2026-04-13 AAR8981 - Apr 13, 08:40 UTCApr 13, 09:15 UTC35m
2026-04-13 AAR8956 - Apr 13, 07:10 UTCApr 13, 07:45 UTC35m
2026-04-13 AAR8233 - Apr 13, 04:50 UTCApr 13, 05:20 UTC30m
2026-04-13 AAR8232 - Apr 13, 03:05 UTCApr 13, 03:40 UTC35m

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 HL8059 page for operator, model, and routing details .

Mode-S 71C059 frequently asked

What is Mode-S code 71C059?
71C059 is an ICAO 24-bit transponder address. Allocated to Korea, South. Assigned to HL8059.
Where is Mode-S 71C059 registered?
Mode-S code 71C059 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 71C059 broadcasting right now?
No active broadcast right now. Last signal was 12h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 71C059, octal 34340131, decimal 7,454,809.
What flights does 71C059 operate?
Mode-S 71C059 has broadcast 12 distinct callsigns, including AAR8707, AAR8995, AAR8986, AAR8985, AAR8981.