Apparatus

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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 17h ago
Flights observed
109
Distinct callsigns
20
Country
ID
Last broadcast
17h ago

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 6 2026-05-22
BTK7581 Batik Air 5 2026-05-27
BTK7515 Batik Air 4 2026-04-21
BTK7311 Batik Air 4 2026-05-27
BTK7583 Batik Air 3 2026-05-27
BTK7511 Batik Air 3 2026-05-21
BTK7309 Batik Air 3 2026-05-21
BTK7308 Batik Air 3 2026-04-18
BTK7514 Batik Air 2 2026-04-20
BTK7501 Batik Air 2 2026-05-20
BTK7055 Batik Air 2 2026-05-26
BTK7053 Batik Air 2 2026-04-18
BTK6857 Batik Air 2 2026-05-11
BTK6406 Batik Air 2 2026-05-18
BTK6351 Batik Air 2 2026-05-18
BTK6350 Batik Air 2 2026-05-18
BTK6288 Batik Air 2 2026-05-13
BTK6269 Batik Air 2 2026-05-10
BTK6170 Batik Air 2 2026-05-10
BTK7797 Batik Air 1 2026-04-29

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-29 BTK7503 HLP → SUB May 29, 09:45 UTCMay 29, 10:20 UTC35m
2026-05-28 BTK7051 HLP → PLM May 28, 06:00 UTCMay 28, 06:15 UTC15m
2026-05-27 BTK7581 HLP → MLG May 27, 23:55 UTCMay 28, 03:00 UTC3h 5m
2026-05-27 BTK7311 HLP → DPS May 27, 09:00 UTCMay 27, 09:40 UTC40m
2026-05-27 BTK7583 HLP → MLG May 27, 04:30 UTCMay 27, 05:09 UTC40m
2026-05-26 BTK7055 HLP → PLM May 26, 12:24 UTCMay 26, 12:40 UTC15m
2026-05-22 BTK7521 HLP → SUB May 22, 13:35 UTCMay 22, 13:55 UTC20m
2026-05-21 BTK7511 HLP → SUB May 21, 22:30 UTCMay 22, 11:45 UTC13h 15m
2026-05-21 BTK7311 HLP → DPS May 21, 09:50 UTCMay 21, 10:10 UTC20m
2026-05-21 BTK7309 HLP → DPS May 21, 04:00 UTCMay 21, 08:30 UTC4h 30m
2026-05-20 BTK7055 HLP → PLM May 20, 12:35 UTCMay 20, 12:50 UTC15m
2026-05-20 BTK7501 HLP → SUB May 20, 06:45 UTCMay 20, 09:30 UTC2h 45m
2026-05-20 BTK7517 HLP → SUB May 20, 03:05 UTCMay 20, 03:30 UTC25m
2026-05-19 BTK7511 HLP → SUB May 19, 22:40 UTCMay 19, 23:15 UTC35m
2026-05-19 BTK7581 HLP → MLG May 19, 00:05 UTCMay 19, 00:45 UTC40m
2026-05-18 BTK6406 CGK → SUB May 18, 06:35 UTCMay 18, 12:20 UTC5h 45m
2026-05-18 BTK6351 SRG → CGK May 18, 05:00 UTCMay 18, 05:30 UTC30m
2026-05-18 BTK6350 CGK → SRG May 18, 02:55 UTCMay 18, 03:20 UTC25m
2026-05-17 BTK6885 KNO → CGK May 17, 10:30 UTCMay 18, 00:35 UTC14h 5m
2026-05-17 BTK6878 KNO → DJB May 17, 08:40 UTCMay 17, 09:30 UTC50m
2026-05-17 BTK7146 SIN → KNO May 17, 06:10 UTCMay 17, 06:50 UTC40m
2026-05-17 BTK7147 KNO → SIN May 17, 03:55 UTCMay 17, 04:40 UTC45m
2026-05-16 BTK6884 CGK → KNO May 16, 12:11 UTCMay 16, 13:41 UTC1h 30m
2026-05-16 BTK6820 CGK → LLJ May 16, 07:16 UTCMay 16, 07:31 UTC15m
2026-05-16 BTK7010 KNO → HLP May 16, 03:30 UTCMay 16, 04:30 UTC1h 0m
2026-05-16 BTK7011 HLP → KNO May 16, 00:55 UTCMay 16, 01:45 UTC50m
2026-05-15 BTK6401 SUB → CGK May 15, 10:25 UTCMay 15, 10:40 UTC15m
2026-05-15 BTK6406 CGK → SUB May 15, 06:45 UTCMay 15, 07:30 UTC45m
2026-05-15 BTK6351 SRG → CGK May 15, 05:00 UTCMay 15, 05:25 UTC25m
2026-05-15 BTK6350 CGK → SRG May 15, 03:00 UTCMay 15, 03:20 UTC20m
2026-05-13 BTK6288 CGK → UPG May 13, 17:20 UTCMay 13, 17:50 UTC30m
2026-05-12 BTK7511 HLP → SUB May 12, 22:35 UTCMay 13, 11:45 UTC13h 10m
2026-05-11 BTK6508 CGK → DPS May 11, 07:50 UTCMay 11, 08:25 UTC35m
2026-05-11 BTK6857 PKU → CGK May 11, 06:15 UTCMay 11, 06:30 UTC15m
2026-05-11 BTK6857 PKU → CGK May 11, 05:05 UTCMay 11, 05:35 UTC30m
2026-05-11 BTK6852 CGK → PKU May 11, 02:15 UTCMay 11, 03:20 UTC1h 5m
2026-05-10 BTK6170 CGK → AMQ May 10, 17:30 UTCMay 10, 17:59 UTC30m
2026-05-10 BTK6269 UPG → CGK May 10, 14:09 UTCMay 10, 14:25 UTC15m
2026-05-09 BTK6236 CGK → UPG May 9, 22:20 UTCMay 9, 22:55 UTC35m
2026-05-09 BTK6352 CGK → SRG May 9, 09:35 UTCMay 9, 12:05 UTC2h 30m
2026-05-09 BTK6865 BTH → CGK May 9, 06:00 UTCMay 9, 07:00 UTC1h 0m
2026-05-09 BTK6864 CGK → BTH May 9, 03:30 UTCMay 9, 04:25 UTC55m
2026-05-09 BTK6369 YIA → CGK May 9, 01:35 UTCMay 9, 02:00 UTC25m
2026-05-08 BTK6368 CGK → YIA May 8, 23:30 UTCMay 8, 23:55 UTC25m
2026-05-07 BTK6288 CGK → UPG May 7, 17:30 UTCMay 8, 12:00 UTC18h 30m
2026-05-07 BTK6565 MLG → CGK May 7, 09:10 UTCMay 7, 09:25 UTC15m
2026-05-07 BTK6564 CGK → MLG May 7, 06:15 UTCMay 7, 06:55 UTC40m
2026-05-07 BTK6805 DJB → CGK May 7, 04:10 UTCMay 7, 05:05 UTC55m
2026-05-07 BTK6804 CGK → DJB May 7, 02:05 UTCMay 7, 02:55 UTC50m
2026-05-07 BTK7369 SRG → CGK May 7, 00:20 UTCMay 7, 00:50 UTC30m

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 17h ago.
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, BTK7311, BTK7583.