Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

8A09A2

ICAO 24-bit transponder address · allocated to Indonesia

Currently assigned to PK-BKY · AIRBUS A-320

Hex
8A09A2
Octal
42404642
Decimal
9,046,434
Country
ID
Tail
PK-BKY
Type
A320
No current signal · last broadcast 44m ago
Flights observed
191
Distinct callsigns
20
Country
ID
Last broadcast
44m ago

Last known position

Most recent position reported by Mode-S 8A09A2.

Country allocation

The ICAO 24-bit address 8A09A2 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
BTK6081 Batik Air 17 2026-05-28
BTK6080 Batik Air 15 2026-05-28
BTK6339 Batik Air 6 2026-05-18
BTK6338 Batik Air 6 2026-05-21
BTK7630 Batik Air 5 2026-04-28
BTK6821 Batik Air 5 2026-05-22
BTK6205 Batik Air 5 2026-05-18
BTK7631 Batik Air 4 2026-04-28
BTK7153 Batik Air 4 2026-04-29
BTK6820 Batik Air 4 2026-05-22
BTK6815 Batik Air 4 2026-05-15
BTK6814 Batik Air 4 2026-05-15
BTK7531 Batik Air 3 2026-05-26
BTK7369 Batik Air 3 2026-05-23
BTK7154 Batik Air 3 2026-04-29
BTK6805 Batik Air 3 2026-05-23
BTK6362 Batik Air 3 2026-05-22
BTK6228 Batik Air 3 2026-05-28
BTK6007 Batik Air 3 2026-05-08
BTK7797 Batik Air 2 2026-05-09

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-30 BTK6375 SOC → CGK May 30, 00:05 UTCMay 30, 00:30 UTC25m
2026-05-29 BTK7368 CGK → SOC May 29, 10:40 UTCMay 29, 11:35 UTC55m
2026-05-29 BTK6675 TRK → CGK May 29, 08:40 UTCMay 29, 08:50 UTC10m
2026-05-29 BTK6674 CGK → TRK May 29, 03:45 UTCMay 29, 03:55 UTC10m
2026-05-28 BTK6081 PER → CGK May 28, 16:55 UTCMay 28, 20:55 UTC4h 0m
2026-05-28 BTK6080 CGK → PER May 28, 11:15 UTCMay 28, 15:30 UTC4h 15m
2026-05-28 BTK6871 PLM → CGK May 28, 07:05 UTCMay 28, 07:20 UTC15m
2026-05-28 BTK6870 CGK → PLM May 28, 05:00 UTCMay 28, 05:15 UTC15m
2026-05-28 BTK6228 CGK → PNK May 28, 00:45 UTCMay 28, 00:55 UTC10m
2026-05-27 BTK7501 HLP → SUB May 27, 06:29 UTCMay 27, 07:10 UTC40m
2026-05-27 BTK7581 HLP → MLG May 27, 02:09 UTCMay 27, 02:49 UTC40m
2026-05-27 BTK5010 BTH → CGK May 27, 00:30 UTCMay 27, 00:39 UTC10m
2026-05-26 BTK7040 SOC → HLP May 26, 10:50 UTCMay 26, 11:34 UTC45m
2026-05-26 BTK7041 HLP → SOC May 26, 08:54 UTCMay 26, 09:49 UTC55m
2026-05-26 BTK7532 SOC → HLP May 26, 06:54 UTCMay 26, 07:34 UTC40m
2026-05-26 BTK7531 HLP → SOC May 26, 04:45 UTCMay 26, 05:49 UTC1h 5m
2026-05-25 BTK6264 CGK → UPG May 25, 19:15 UTCMay 25, 19:40 UTC25m
2026-05-25 BTK6353 SRG → CGK May 25, 11:50 UTCMay 25, 12:20 UTC30m
2026-05-25 BTK6352 CGK → SRG May 25, 10:00 UTCMay 25, 10:30 UTC30m
2026-05-25 BTK6865 BTH → CGK May 25, 06:00 UTCMay 25, 07:05 UTC1h 5m
2026-05-25 BTK6864 CGK → BTH May 25, 03:20 UTCMay 25, 04:15 UTC55m
2026-05-24 BTK6368 CGK → YIA May 24, 23:30 UTCMay 24, 23:46 UTC16m
2026-05-24 BTK6081 PER → CGK May 24, 17:00 UTCMay 24, 20:50 UTC3h 50m
2026-05-24 BTK6080 CGK → PER May 24, 11:20 UTCMay 24, 15:50 UTC4h 30m
2026-05-24 BTK6870 CGK → PLM May 24, 05:05 UTCMay 24, 05:20 UTC15m
2026-05-24 BTK6228 CGK → PNK May 24, 00:40 UTCMay 24, 00:50 UTC10m
2026-05-23 BTK6588 CGK → SUB May 23, 13:10 UTCMay 23, 13:50 UTC40m
2026-05-23 BTK6564 CGK → MLG May 23, 06:15 UTCMay 23, 09:25 UTC3h 10m
2026-05-23 BTK6805 DJB → CGK May 23, 04:15 UTCMay 23, 05:10 UTC55m
2026-05-23 BTK6804 CGK → DJB May 23, 02:00 UTCMay 23, 02:55 UTC55m
2026-05-23 BTK7369 SRG → CGK May 23, 00:25 UTCMay 23, 00:50 UTC25m
2026-05-22 BTK6362 CGK → SRG May 22, 12:40 UTCMay 22, 13:05 UTC25m
2026-05-22 BTK6821 LLJ → CGK May 22, 10:05 UTCMay 22, 10:20 UTC15m
2026-05-22 BTK6820 CGK → LLJ May 22, 07:25 UTCMay 22, 07:45 UTC20m
2026-05-21 BTK6338 CGK → SRG May 21, 23:50 UTCMay 22, 00:15 UTC25m
2026-05-21 BTK6081 PER → CGK May 21, 16:45 UTCMay 21, 20:55 UTC4h 10m
2026-05-21 BTK6080 CGK → PER May 21, 11:20 UTCMay 21, 15:20 UTC4h 0m
2026-05-21 BTK7283 KUL → CGK May 21, 06:45 UTCMay 21, 08:30 UTC1h 45m
2026-05-21 BTK7282 CGK → KUL May 21, 03:25 UTCMay 21, 05:05 UTC1h 40m
2026-05-20 BTK6540 CGK → KOE May 20, 19:20 UTCMay 21, 01:40 UTC6h 20m
2026-05-20 BTK7150 SIN → CGK May 20, 08:25 UTCMay 20, 08:55 UTC30m
2026-05-20 BTK7151 CGK → SIN May 20, 05:40 UTCMay 20, 06:50 UTC1h 10m
2026-05-20 BTK6431 BEJ → CGK May 20, 03:00 UTCMay 20, 03:20 UTC20m
2026-05-19 BTK6430 CGK → BEJ May 19, 22:00 UTCMay 19, 22:10 UTC10m
2026-05-18 BTK6205 PKN → CGK May 18, 10:00 UTCMay 18, 10:15 UTC15m
2026-05-18 BTK6339 SRG → CGK May 18, 05:45 UTCMay 18, 06:10 UTC25m
2026-05-18 BTK6338 CGK → SRG May 18, 00:00 UTCMay 18, 00:25 UTC25m
2026-05-17 BTK6081 PER → CGK May 17, 16:45 UTCMay 17, 20:55 UTC4h 10m
2026-05-17 BTK6080 CGK → PER May 17, 11:40 UTCMay 17, 15:40 UTC4h 0m
2026-05-16 BTK6204 CGK → PKN May 16, 07:31 UTCMay 16, 07:41 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-BKY page for operator, model, and routing details .

Mode-S 8A09A2 frequently asked

What is Mode-S code 8A09A2?
8A09A2 is an ICAO 24-bit transponder address. Allocated to Indonesia. Assigned to PK-BKY.
Where is Mode-S 8A09A2 registered?
Mode-S code 8A09A2 is allocated to Indonesia (ID). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 8A09A2 broadcasting right now?
No active broadcast right now. Last signal was 44m ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 8A09A2, octal 42404642, decimal 9,046,434.
What flights does 8A09A2 operate?
Mode-S 8A09A2 has broadcast 20 distinct callsigns, including BTK6081, BTK6080, BTK6339, BTK6338, BTK7630.