Apparatus

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sensors Mode-S transponder

8A09A3

ICAO 24-bit transponder address · allocated to Indonesia

Currently assigned to PK-BKT · AIRBUS A-320

Hex
8A09A3
Octal
42404643
Decimal
9,046,435
Country
ID
Tail
PK-BKT
Type
A320
No current signal · last broadcast 6h ago
Flights observed
139
Distinct callsigns
20
Country
ID
Last broadcast
6h ago

Last known position

Most recent position reported by Mode-S 8A09A3.

Country allocation

The ICAO 24-bit address 8A09A3 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 20 distinct

Callsign Airline Flights Last seen
BTK6007 Batik Air 12 2026-05-29
BTK6008 Batik Air 10 2026-05-29
BTK6080 Batik Air 9 2026-05-07
BTK7631 Batik Air 7 2026-04-26
BTK6081 Batik Air 7 2026-05-07
BTK7630 Batik Air 6 2026-04-26
BTK7309 Batik Air 3 2026-05-16
BTK7797 Batik Air 2 2026-04-27
BTK7532 Batik Air 2 2026-05-08
BTK7531 Batik Air 2 2026-05-08
BTK7368 Batik Air 2 2026-04-15
BTK7155 Batik Air 2 2026-04-15
BTK7154 Batik Air 2 2026-04-20
BTK6821 Batik Air 2 2026-04-27
BTK6820 Batik Air 2 2026-04-27
BTK6815 Batik Air 2 2026-05-06
BTK6814 Batik Air 2 2026-05-06
BTK6806 Batik Air 2 2026-04-23
BTK6508 Batik Air 2 2026-05-09
BTK6378 Batik Air 2 2026-05-26

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-30 BTK6862 CGK → BTH May 30, 12:35 UTCMay 30, 13:30 UTC55m
2026-05-30 BTK6406 CGK → SUB May 30, 06:40 UTCMay 30, 10:35 UTC3h 55m
2026-05-30 BTK6228 CGK → PNK May 30, 00:50 UTCMay 30, 01:00 UTC10m
2026-05-29 BTK6008 PER → DPS May 29, 06:25 UTCMay 29, 07:00 UTC35m
2026-05-29 BTK6007 DPS → PER May 29, 04:20 UTCMay 29, 05:00 UTC40m
2026-05-28 BTK6007 DPS → PER May 28, 09:05 UTCMay 29, 05:00 UTC19h 55m
2026-05-28 BTK7513 HLP → SUB May 28, 01:55 UTCMay 28, 02:35 UTC40m
2026-05-27 BTK6351 SRG → CGK May 27, 05:24 UTCMay 27, 05:40 UTC15m
2026-05-27 BTK6350 CGK → SRG May 27, 02:59 UTCMay 27, 03:09 UTC10m
2026-05-26 BTK6885 KNO → CGK May 26, 22:54 UTCMay 27, 00:00 UTC1h 5m
2026-05-26 BTK6884 CGK → KNO May 26, 12:10 UTCMay 26, 13:34 UTC1h 25m
2026-05-26 BTK6204 CGK → PKN May 26, 07:15 UTCMay 26, 07:24 UTC10m
2026-05-26 BTK6378 CGK → YIA May 26, 03:19 UTCMay 26, 05:45 UTC2h 25m
2026-05-26 BTK6369 YIA → CGK May 26, 01:14 UTCMay 26, 02:00 UTC45m
2026-05-25 BTK6368 CGK → YIA May 25, 23:24 UTCMay 25, 23:45 UTC20m
2026-05-25 BTK6253 BPN → CGK May 25, 08:40 UTCMay 25, 09:10 UTC30m
2026-05-25 BTK6250 CGK → BPN May 25, 04:05 UTCMay 25, 04:15 UTC10m
2026-05-25 BTK6899 BTJ → CGK May 25, 02:25 UTCMay 25, 02:35 UTC10m
2026-05-24 BTK6898 CGK → BTJ May 24, 08:35 UTCMay 24, 09:50 UTC1h 15m
2026-05-24 BTK6509 DPS → CGK May 24, 06:35 UTCMay 24, 07:05 UTC30m
2026-05-21 BTK7521 HLP → SUB May 21, 13:25 UTCMay 21, 14:05 UTC40m
2026-05-20 BTK6008 PER → DPS May 20, 06:30 UTCMay 20, 07:05 UTC35m
2026-05-20 BTK6007 DPS → PER May 20, 04:25 UTCMay 20, 05:05 UTC41m
2026-05-18 BTK6008 PER → DPS May 18, 06:35 UTCMay 18, 07:05 UTC30m
2026-05-18 BTK6007 DPS → PER May 18, 04:20 UTCMay 18, 04:55 UTC35m
2026-05-16 BTK7503 HLP → SUB May 16, 09:40 UTCMay 16, 10:16 UTC35m
2026-05-16 BTK7309 HLP → DPS May 16, 04:10 UTCMay 16, 07:41 UTC3h 31m
2026-05-15 BTK6008 PER → DPS May 15, 06:25 UTCMay 15, 06:55 UTC30m
2026-05-15 BTK6007 DPS → PER May 15, 04:35 UTCMay 15, 05:10 UTC35m
2026-05-14 BTK6007 DPS → PER May 14, 09:05 UTCMay 15, 05:10 UTC20h 5m
2026-05-14 BTK7583 HLP → MLG May 14, 04:20 UTCMay 14, 07:35 UTC3h 15m
2026-05-14 BTK7581 HLP → MLG May 14, 00:00 UTCMay 14, 03:05 UTC3h 5m
2026-05-13 BTK6008 PER → DPS May 13, 06:35 UTCMay 13, 12:50 UTC6h 15m
2026-05-13 BTK6007 DPS → PER May 13, 04:50 UTCMay 13, 05:30 UTC40m
2026-05-12 BTK7309 HLP → DPS May 12, 04:00 UTCMay 12, 04:35 UTC35m
2026-05-11 BTK6008 PER → DPS May 11, 06:30 UTCMay 11, 07:05 UTC35m
2026-05-11 BTK6007 DPS → PER May 11, 04:25 UTCMay 11, 05:05 UTC40m
2026-05-09 BTK6508 CGK → DPS May 9, 07:40 UTCMay 9, 08:20 UTC40m
2026-05-09 BTK6379 YIA → CGK May 9, 05:05 UTCMay 9, 05:40 UTC35m
2026-05-09 BTK6378 CGK → YIA May 9, 03:10 UTCMay 9, 03:40 UTC30m
2026-05-08 BTK7532 SOC → HLP May 8, 06:50 UTCMay 8, 07:39 UTC50m
2026-05-08 BTK7531 HLP → SOC May 8, 04:44 UTCMay 8, 05:29 UTC45m
2026-05-08 BTK6343 SRG → CGK May 8, 02:59 UTCMay 8, 03:35 UTC35m
2026-05-08 BTK6342 CGK → SRG May 8, 00:44 UTCMay 8, 01:04 UTC20m
2026-05-07 BTK6081 PER → CGK May 7, 16:40 UTCMay 7, 20:40 UTC4h 0m
2026-05-07 BTK6080 CGK → PER May 7, 14:40 UTCMay 7, 15:20 UTC40m
2026-05-07 BTK6080 CGK → PER May 7, 11:05 UTCMay 7, 11:25 UTC20m
2026-05-07 BTK6675 TRK → CGK May 7, 08:50 UTCMay 7, 09:05 UTC15m
2026-05-06 BTK7066 PKU → HLP May 6, 23:55 UTCMay 7, 01:10 UTC1h 15m
2026-05-06 BTK7065 CGK → PKU May 6, 11:00 UTCMay 6, 11:10 UTC10m

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-BKT page for operator, model, and routing details .

Mode-S 8A09A3 frequently asked

What is Mode-S code 8A09A3?
8A09A3 is an ICAO 24-bit transponder address. Allocated to Indonesia. Assigned to PK-BKT.
Where is Mode-S 8A09A3 registered?
Mode-S code 8A09A3 is allocated to Indonesia (ID). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 8A09A3 broadcasting right now?
No active broadcast right now. Last signal was 6h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 8A09A3, octal 42404643, decimal 9,046,435.
What flights does 8A09A3 operate?
Mode-S 8A09A3 has broadcast 20 distinct callsigns, including BTK6007, BTK6008, BTK6080, BTK7631, BTK6081.