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sensors Mode-S transponder

8A0603

ICAO 24-bit transponder address · allocated to Indonesia

Currently assigned to PK-LUI · AIRBUS A-320

Hex
8A0603
Octal
42403003
Decimal
9,045,507
Country
ID
Tail
PK-LUI
Type
A320
No current signal · last broadcast Jul 26, 12:15 UTC
Flights observed
267
Distinct callsigns
20
Country
ID
Last broadcast
Jul 26, 12:15 UTC

Last known position

Most recent position reported by Mode-S 8A0603.

Country allocation

The ICAO 24-bit address 8A0603 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
BTK7521 Batik Air 11 2026-07-20
BTK7581 Batik Air 9 2026-07-20
BTK7515 - 9 2026-07-10
BTK7583 - 7 2026-07-20
BTK7511 - 7 2026-07-17
BTK7501 Batik Air 7 2026-07-20
BTK7514 Batik Air 6 2026-07-20
BTK7311 - 6 2026-06-22
BTK7055 - 6 2026-07-19
BTK7517 - 5 2026-07-19
BTK7309 - 5 2026-07-10
BTK7308 - 5 2026-07-05
BTK6170 Batik Air 5 2026-06-09
BTK6288 Batik Air 4 2026-06-29
BTK6205 Batik Air 4 2026-07-23
BTK7797 Batik Air 3 2026-06-28
BTK7513 - 3 2026-07-17
BTK7512 - 3 2026-07-06
BTK7369 - 3 2026-06-15
BTK7368 - 3 2026-07-02

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 BTK7065 CGK → PKU Jul 26, 11:15 UTCJul 26, 12:15 UTC1h 0m
2026-07-26 BTK6517 DPS → CGK Jul 26, 09:20 UTCJul 26, 09:35 UTC15m
2026-07-24 BTK6050 CGK → DPS Jul 24, 04:50 UTCJul 24, 05:30 UTC40m
2026-07-24 BTK6203 PKN → CGK Jul 24, 01:40 UTCJul 24, 02:15 UTC35m
2026-07-23 BTK6202 CGK → PKN Jul 23, 23:10 UTCJul 23, 23:20 UTC10m
2026-07-23 BTK6205 PKN → CGK Jul 23, 10:05 UTCJul 23, 10:20 UTC15m
2026-07-23 BTK6339 SRG → CGK Jul 23, 06:00 UTCJul 23, 06:15 UTC15m
2026-07-22 BTK6338 CGK → SRG Jul 22, 23:50 UTCJul 23, 00:05 UTC15m
2026-07-22 BTK6509 DPS → CGK Jul 22, 11:45 UTCJul 22, 12:15 UTC30m
2026-07-20 BTK7521 HLP → SUB Jul 20, 13:20 UTCJul 20, 13:55 UTC35m
2026-07-20 BTK7514 SUB → HLP Jul 20, 11:40 UTCJul 20, 12:05 UTC25m
2026-07-20 BTK7501 HLP → SUB Jul 20, 09:20 UTCJul 20, 09:50 UTC30m
2026-07-20 BTK7583 - Jul 20, 05:35 UTCJul 20, 08:15 UTC2h 40m
2026-07-20 BTK7581 HLP → MLG Jul 20, 01:10 UTCJul 20, 03:50 UTC2h 40m
2026-07-19 BTK7055 - Jul 19, 12:20 UTCJul 19, 12:45 UTC25m
2026-07-19 BTK7501 HLP → SUB Jul 19, 06:40 UTCJul 19, 09:50 UTC3h 10m
2026-07-19 BTK7520 - Jul 19, 05:20 UTCJul 19, 05:30 UTC10m
2026-07-19 BTK7517 - Jul 19, 02:30 UTCJul 19, 03:05 UTC35m
2026-07-18 BTK7521 HLP → SUB Jul 18, 13:45 UTCJul 19, 01:15 UTC11h 30m
2026-07-18 BTK7501 HLP → SUB Jul 18, 07:00 UTCJul 18, 09:55 UTC2h 55m
2026-07-18 BTK7517 - Jul 18, 02:29 UTCJul 18, 05:50 UTC3h 21m
2026-07-17 BTK7511 - Jul 17, 22:20 UTCJul 18, 01:20 UTC3h 0m
2026-07-17 BTK7502 SUB → SUB Jul 17, 10:55 UTCJul 17, 13:40 UTC2h 45m
2026-07-17 BTK7052 - Jul 17, 09:40 UTCJul 17, 09:50 UTC10m
2026-07-17 BTK7051 HLP → PLM Jul 17, 06:50 UTCJul 17, 07:05 UTC15m
2026-07-17 BTK7513 - Jul 17, 01:59 UTCJul 17, 05:10 UTC3h 10m
2026-07-16 BTK7502 - Jul 16, 12:49 UTCJul 16, 13:00 UTC10m
2026-07-16 BTK7503 - Jul 16, 09:50 UTCJul 16, 10:25 UTC35m
2026-07-16 BTK7517 - Jul 16, 02:50 UTCJul 16, 06:00 UTC3h 10m
2026-07-15 BTK7511 - Jul 15, 22:45 UTCJul 15, 23:20 UTC35m
2026-07-15 BTK7310 - Jul 15, 14:00 UTCJul 15, 14:30 UTC30m
2026-07-10 BTK7521 - Jul 10, 13:25 UTCJul 10, 14:05 UTC40m
2026-07-10 BTK7514 - Jul 10, 12:05 UTCJul 10, 12:15 UTC10m
2026-07-10 BTK7515 - Jul 10, 09:35 UTCJul 10, 09:45 UTC10m
2026-07-10 BTK7309 - Jul 10, 04:35 UTCJul 10, 04:45 UTC10m
2026-07-09 BTK7055 - Jul 9, 13:05 UTCJul 9, 13:15 UTC10m
2026-07-09 BTK7501 - Jul 9, 08:55 UTCJul 9, 09:15 UTC20m
2026-07-09 BTK7516 - Jul 9, 04:55 UTCJul 9, 05:30 UTC35m
2026-07-09 BTK7513 - Jul 9, 02:00 UTCJul 9, 02:40 UTC40m
2026-07-08 BTK7521 HLP → SUB Jul 8, 13:20 UTCJul 8, 22:50 UTC9h 30m
2026-07-08 BTK7513 - Jul 8, 03:00 UTCJul 8, 03:40 UTC40m
2026-07-07 BTK7515 - Jul 7, 09:25 UTCJul 7, 09:45 UTC20m
2026-07-07 BTK7309 - Jul 7, 04:00 UTCJul 7, 08:05 UTC4h 5m
2026-07-06 BTK7055 HLP → PLM Jul 6, 13:10 UTCJul 6, 13:25 UTC15m
2026-07-06 BTK7512 - Jul 6, 11:50 UTCJul 6, 12:20 UTC30m
2026-07-06 BTK7512 - Jul 6, 10:10 UTCJul 6, 10:20 UTC10m
2026-07-06 BTK7501 - Jul 6, 07:00 UTCJul 6, 09:30 UTC2h 30m
2026-07-05 BTK7511 - Jul 5, 22:30 UTCJul 6, 05:55 UTC7h 25m
2026-07-05 BTK7515 - Jul 5, 11:50 UTCJul 5, 14:45 UTC2h 55m
2026-07-05 BTK7308 - Jul 5, 10:00 UTCJul 5, 10:25 UTC25m

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

Mode-S 8A0603 frequently asked

What is Mode-S code 8A0603?
8A0603 is an ICAO 24-bit transponder address. Allocated to Indonesia. Assigned to PK-LUI.
Where is Mode-S 8A0603 registered?
Mode-S code 8A0603 is allocated to Indonesia (ID). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 8A0603 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 12:15 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 8A0603, octal 42403003, decimal 9,045,507.
What flights does 8A0603 operate?
Mode-S 8A0603 has broadcast 20 distinct callsigns, including BTK7521, BTK7581, BTK7515, BTK7583, BTK7511.