Apparatus

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sensors Mode-S transponder

8A09A5

ICAO 24-bit transponder address · allocated to Indonesia

Currently assigned to PK-BKV · AIRBUS A-320

Hex
8A09A5
Octal
42404645
Decimal
9,046,437
Country
ID
Tail
PK-BKV
Type
A320
Broadcasting now · callsign BTK6008 · 36,000 ft
Flights observed
4
Distinct callsigns
2
Country
ID
Last broadcast
1d ago

Current position

8A09A5 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 8A09A5 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 2 distinct

Callsign Airline Flights Last seen
BTK6008 Batik Air 2 2026-04-14
BTK6007 Batik Air 2 2026-04-14

Recent flights last 4

DateFlightRouteTakeoffLandingDuration
2026-04-14 BTK6008 PER → DPS Apr 14, 06:25 UTCApr 14, 06:55 UTC30m
2026-04-14 BTK6007 DPS → PER Apr 14, 05:15 UTCApr 14, 05:25 UTC10m
2026-04-13 BTK6008 - Apr 13, 06:20 UTCApr 13, 06:55 UTC35m
2026-04-13 BTK6007 DPS → PER Apr 13, 04:20 UTCApr 13, 04:55 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-BKV page for operator, model, and routing details .

Mode-S 8A09A5 frequently asked

What is Mode-S code 8A09A5?
8A09A5 is an ICAO 24-bit transponder address. Allocated to Indonesia. Assigned to PK-BKV.
Where is Mode-S 8A09A5 registered?
Mode-S code 8A09A5 is allocated to Indonesia (ID). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 8A09A5 broadcasting right now?
Yes. Mode-S 8A09A5 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 8A09A5, octal 42404645, decimal 9,046,437.
What flights does 8A09A5 operate?
Mode-S 8A09A5 has broadcast 2 distinct callsigns, including BTK6008, BTK6007.