Apparatus

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sensors Mode-S transponder

8A018C

ICAO 24-bit transponder address · allocated to Indonesia

Currently assigned to PK-AXE · AIRBUS A-320

Hex
8A018C
Octal
42400614
Decimal
9,044,364
Country
ID
Tail
PK-AXE
Type
A320
No current signal · last broadcast 15h ago
Flights observed
6
Distinct callsigns
4
Country
ID
Last broadcast
15h ago

Last known position

Most recent position reported by Mode-S 8A018C.

Country allocation

The ICAO 24-bit address 8A018C falls within the block assigned to Indonesia (ID) by ICAO Annex 10, Volume III. Every aircraft registered in Indonesia 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
AWQ545 - 2 2026-04-14
AWQ544 - 2 2026-04-14
AWQ421 - 1 2026-04-13
AWQ420 Indonesia AirAsia 1 2026-04-13

Recent flights last 6

DateFlightRouteTakeoffLandingDuration
2026-04-14 AWQ545 - Apr 14, 09:10 UTCApr 14, 09:40 UTC30m
2026-04-14 AWQ544 - Apr 14, 07:30 UTCApr 14, 08:05 UTC35m
2026-04-13 AWQ421 - Apr 13, 22:25 UTCApr 13, 23:00 UTC35m
2026-04-13 AWQ420 DPS → MEL Apr 13, 20:45 UTCApr 13, 21:25 UTC40m
2026-04-13 AWQ545 - Apr 13, 08:50 UTCApr 13, 09:25 UTC35m
2026-04-13 AWQ544 - Apr 13, 07:10 UTCApr 13, 07:45 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 PK-AXE page for operator, model, and routing details .

Mode-S 8A018C frequently asked

What is Mode-S code 8A018C?
8A018C is an ICAO 24-bit transponder address. Allocated to Indonesia. Assigned to PK-AXE.
Where is Mode-S 8A018C registered?
Mode-S code 8A018C is allocated to Indonesia (ID). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 8A018C 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 8A018C, octal 42400614, decimal 9,044,364.
What flights does 8A018C operate?
Mode-S 8A018C has broadcast 4 distinct callsigns, including AWQ545, AWQ544, AWQ421, AWQ420.