Apparatus

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sensors Mode-S transponder

8A09A1

ICAO 24-bit transponder address · allocated to Indonesia

Currently assigned to PK-BKR · AIRBUS A-320

Hex
8A09A1
Octal
42404641
Decimal
9,046,433
Country
ID
Tail
PK-BKR
Type
A320
No current signal · last broadcast 1h ago
Flights observed
264
Distinct callsigns
20
Country
ID
Last broadcast
1h ago

Last known position

Most recent position reported by Mode-S 8A09A1.

Country allocation

The ICAO 24-bit address 8A09A1 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
BTK7630 - 5 2026-06-17
BTK7521 - 5 2026-07-11
BTK7501 - 5 2026-07-12
BTK6288 Batik Air 5 2026-06-06
BTK7631 - 4 2026-06-17
BTK7517 - 4 2026-07-12
BTK7513 - 4 2026-07-13
BTK7108 - 4 2026-06-19
BTK7051 - 4 2026-07-10
BTK6899 - 4 2026-06-23
BTK6898 Batik Air 4 2026-04-16
BTK6885 Batik Air 4 2026-06-01
BTK6807 - 4 2026-06-18
BTK6350 - 4 2026-06-26
BTK6345 Batik Air 4 2026-06-06
BTK6242 - 4 2026-06-29
BTK7797 Batik Air 3 2026-06-27
BTK7583 - 3 2026-07-09
BTK7581 - 3 2026-07-09
BTK7515 - 3 2026-07-11

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 BTK7309 - Jul 14, 04:10 UTCJul 14, 08:15 UTC4h 5m
2026-07-13 BTK7516 - Jul 13, 05:01 UTCJul 13, 05:10 UTC10m
2026-07-13 BTK7513 - Jul 13, 02:05 UTCJul 13, 02:35 UTC30m
2026-07-12 BTK7055 - Jul 12, 12:20 UTCJul 12, 12:40 UTC20m
2026-07-12 BTK7512 - Jul 12, 09:40 UTCJul 12, 09:50 UTC10m
2026-07-12 BTK7501 - Jul 12, 06:45 UTCJul 12, 07:20 UTC35m
2026-07-12 BTK7517 - Jul 12, 02:35 UTCJul 12, 05:55 UTC3h 20m
2026-07-11 BTK7521 - Jul 11, 13:20 UTCJul 12, 01:25 UTC12h 5m
2026-07-11 BTK7515 - Jul 11, 09:10 UTCJul 11, 12:10 UTC3h 0m
2026-07-11 BTK7309 - Jul 11, 03:55 UTCJul 11, 08:05 UTC4h 10m
2026-07-10 BTK7503 - Jul 10, 10:00 UTCJul 10, 10:35 UTC35m
2026-07-10 BTK7051 - Jul 10, 06:10 UTCJul 10, 06:35 UTC25m
2026-07-10 BTK7513 - Jul 10, 01:50 UTCJul 10, 05:05 UTC3h 15m
2026-07-09 BTK7515 - Jul 9, 11:30 UTCJul 9, 12:10 UTC40m
2026-07-09 BTK7582 - Jul 9, 10:20 UTCJul 9, 10:30 UTC10m
2026-07-09 BTK7583 - Jul 9, 04:25 UTCJul 9, 09:45 UTC5h 20m
2026-07-09 BTK7581 - Jul 9, 00:10 UTCJul 9, 00:50 UTC40m
2026-07-08 BTK7503 - Jul 8, 09:50 UTCJul 8, 10:30 UTC40m
2026-07-08 BTK7051 - Jul 8, 06:05 UTCJul 8, 06:25 UTC20m
2026-07-07 BTK7521 HLP → SUB Jul 7, 13:20 UTCJul 7, 13:55 UTC35m
2026-07-06 BTK5007 - Jul 6, 22:30 UTCJul 7, 12:15 UTC13h 45m
2026-07-06 BTK6371 YIA → CGK Jul 6, 13:25 UTCJul 6, 14:00 UTC35m
2026-07-06 BTK6374 - Jul 6, 11:35 UTCJul 6, 11:55 UTC20m
2026-07-06 BTK6709 - Jul 6, 09:55 UTCJul 6, 10:20 UTC25m
2026-07-06 BTK6708 - Jul 6, 08:25 UTCJul 6, 08:40 UTC15m
2026-07-06 BTK6257 - Jul 6, 07:00 UTCJul 6, 07:15 UTC15m
2026-07-06 BTK6561 - Jul 6, 01:10 UTCJul 6, 01:25 UTC15m
2026-07-05 BTK6560 - Jul 5, 19:55 UTCJul 5, 20:05 UTC10m
2026-07-05 BTK7058 - Jul 5, 15:35 UTCJul 5, 15:50 UTC15m
2026-07-05 BTK7055 HLP → PLM Jul 5, 13:10 UTCJul 5, 13:25 UTC15m
2026-07-05 BTK7501 - Jul 5, 08:35 UTCJul 5, 12:10 UTC3h 35m
2026-07-05 BTK7582 - Jul 5, 07:05 UTCJul 5, 07:30 UTC25m
2026-07-05 BTK7583 - Jul 5, 04:30 UTCJul 5, 05:00 UTC30m
2026-07-05 BTK7581 - Jul 5, 00:00 UTCJul 5, 03:20 UTC3h 20m
2026-07-04 BTK7310 DPS → HLP Jul 4, 13:55 UTCJul 4, 14:05 UTC10m
2026-07-04 BTK7311 - Jul 4, 10:00 UTCJul 4, 10:40 UTC40m
2026-07-04 BTK7052 - Jul 4, 08:35 UTCJul 4, 08:45 UTC10m
2026-07-04 BTK7051 - Jul 4, 06:05 UTCJul 4, 06:25 UTC20m
2026-07-04 BTK7513 - Jul 4, 02:00 UTCJul 4, 05:15 UTC3h 15m
2026-07-03 BTK7502 SUB → SUB Jul 3, 12:25 UTCJul 3, 12:50 UTC25m
2026-07-03 BTK7503 - Jul 3, 09:45 UTCJul 3, 10:20 UTC35m
2026-07-03 BTK7052 - Jul 3, 08:35 UTCJul 3, 08:45 UTC10m
2026-07-03 BTK7051 - Jul 3, 06:05 UTCJul 3, 06:25 UTC20m
2026-07-03 BTK7513 - Jul 3, 02:00 UTCJul 3, 05:10 UTC3h 10m
2026-06-30 BTK6508 - Jun 30, 07:45 UTCJun 30, 08:30 UTC45m
2026-06-30 BTK6711 TKG → CGK Jun 30, 05:55 UTCJun 30, 06:25 UTC30m
2026-06-30 BTK6710 CGK → TKG Jun 30, 04:30 UTCJun 30, 04:50 UTC20m
2026-06-30 BTK6243 - Jun 30, 03:10 UTCJun 30, 03:20 UTC10m
2026-06-29 BTK6242 - Jun 29, 21:05 UTCJun 29, 21:14 UTC10m
2026-06-29 BTK7040 - Jun 29, 11:20 UTCJun 29, 11:35 UTC15m

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

Mode-S 8A09A1 frequently asked

What is Mode-S code 8A09A1?
8A09A1 is an ICAO 24-bit transponder address. Allocated to Indonesia. Assigned to PK-BKR.
Where is Mode-S 8A09A1 registered?
Mode-S code 8A09A1 is allocated to Indonesia (ID). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 8A09A1 broadcasting right now?
No active broadcast right now. Last signal was 1h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 8A09A1, octal 42404641, decimal 9,046,433.
What flights does 8A09A1 operate?
Mode-S 8A09A1 has broadcast 20 distinct callsigns, including BTK7630, BTK7521, BTK7501, BTK6288, BTK7631.