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sensors Mode-S transponder

8A0638

ICAO 24-bit transponder address · allocated to Indonesia

Currently assigned to PK-LUT · AIRBUS A-320

Hex
8A0638
Octal
42403070
Decimal
9,045,560
Country
ID
Tail
PK-LUT
Type
A320
No current signal · last broadcast 1h ago
Flights observed
239
Distinct callsigns
20
Country
ID
Last broadcast
1h ago

Last known position

Most recent position reported by Mode-S 8A0638.

Country allocation

The ICAO 24-bit address 8A0638 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
BTK6825 - 10 2026-07-10
BTK6864 - 7 2026-07-11
BTK6865 - 6 2026-07-11
BTK6824 - 6 2026-07-10
BTK6819 - 6 2026-07-13
BTK6338 - 6 2026-07-12
BTK6352 - 5 2026-06-27
BTK6339 - 5 2026-07-13
BTK6205 - 5 2026-07-10
BTK7797 Batik Air 4 2026-05-29
BTK7630 Batik Air 4 2026-04-27
BTK7581 Batik Air 4 2026-05-11
BTK6885 Batik Air 4 2026-05-30
BTK6884 Batik Air 4 2026-05-30
BTK6857 - 4 2026-07-12
BTK6852 - 4 2026-07-14
BTK6584 - 4 2026-06-29
BTK6565 Batik Air 4 2026-06-01
BTK6564 - 4 2026-06-29
BTK6509 Batik Air 4 2026-05-06

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 BTK6852 - Jul 14, 01:10 UTCJul 14, 02:00 UTC50m
2026-07-13 BTK6819 - Jul 13, 08:25 UTCJul 14, 00:05 UTC15h 40m
2026-07-13 BTK6339 - Jul 13, 05:40 UTCJul 13, 06:15 UTC35m
2026-07-12 BTK6338 - Jul 12, 23:50 UTCJul 13, 00:15 UTC25m
2026-07-12 BTK6343 - Jul 12, 08:30 UTCJul 12, 08:45 UTC15m
2026-07-12 BTK6342 - Jul 12, 06:20 UTCJul 12, 06:45 UTC25m
2026-07-12 BTK6857 - Jul 12, 05:01 UTCJul 12, 05:15 UTC15m
2026-07-12 BTK6857 - Jul 12, 03:55 UTCJul 12, 04:30 UTC35m
2026-07-12 BTK6852 - Jul 12, 01:35 UTCJul 12, 02:45 UTC1h 10m
2026-07-11 BTK6819 - Jul 11, 08:30 UTCJul 12, 00:15 UTC15h 45m
2026-07-11 BTK6865 - Jul 11, 06:15 UTCJul 11, 07:15 UTC1h 0m
2026-07-11 BTK6864 - Jul 11, 03:30 UTCJul 11, 04:25 UTC55m
2026-07-11 BTK6203 - Jul 11, 02:00 UTCJul 11, 02:10 UTC10m
2026-07-10 BTK6202 - Jul 10, 23:15 UTCJul 10, 23:30 UTC15m
2026-07-10 BTK6205 - Jul 10, 10:05 UTCJul 10, 10:20 UTC15m
2026-07-10 BTK6204 - Jul 10, 07:30 UTCJul 10, 07:40 UTC10m
2026-07-10 BTK6825 - Jul 10, 05:45 UTCJul 10, 06:00 UTC15m
2026-07-10 BTK6825 - Jul 10, 05:00 UTCJul 10, 05:10 UTC10m
2026-07-10 BTK6824 - Jul 10, 02:35 UTCJul 10, 03:30 UTC55m
2026-07-09 BTK6819 - Jul 9, 09:00 UTCJul 10, 00:20 UTC15h 20m
2026-07-09 BTK6861 - Jul 9, 06:40 UTCJul 9, 07:40 UTC1h 0m
2026-07-09 BTK6864 - Jul 9, 03:35 UTCJul 9, 04:35 UTC1h 0m
2026-07-09 BTK6203 - Jul 9, 02:00 UTCJul 9, 02:10 UTC10m
2026-07-08 BTK7367 - Jul 8, 09:00 UTCJul 8, 09:45 UTC45m
2026-07-08 BTK7366 - Jul 8, 06:45 UTCJul 8, 07:40 UTC55m
2026-07-08 BTK6861 - Jul 8, 05:10 UTCJul 8, 05:25 UTC15m
2026-07-08 BTK6861 - Jul 8, 04:10 UTCJul 8, 04:35 UTC25m
2026-07-08 BTK6860 - Jul 8, 01:35 UTCJul 8, 02:30 UTC55m
2026-07-07 BTK6819 - Jul 7, 23:40 UTCJul 8, 00:05 UTC25m
2026-07-07 BTK6818 - Jul 7, 09:00 UTCJul 7, 09:25 UTC25m
2026-07-07 BTK6865 - Jul 7, 07:00 UTCJul 7, 07:30 UTC30m
2026-07-07 BTK6865 - Jul 7, 06:00 UTCJul 7, 06:25 UTC25m
2026-07-07 BTK6864 - Jul 7, 03:25 UTCJul 7, 04:20 UTC55m
2026-07-06 BTK6825 - Jul 6, 05:50 UTCJul 6, 06:05 UTC15m
2026-07-06 BTK6825 - Jul 6, 05:00 UTCJul 6, 05:15 UTC15m
2026-07-06 BTK6824 - Jul 6, 02:40 UTCJul 6, 03:35 UTC55m
2026-07-06 BTK6201 - Jul 6, 01:00 UTCJul 6, 01:30 UTC30m
2026-07-05 BTK6825 - Jul 5, 06:05 UTCJul 5, 06:20 UTC15m
2026-07-05 BTK6825 - Jul 5, 05:15 UTCJul 5, 05:25 UTC10m
2026-07-05 BTK6824 - Jul 5, 02:45 UTCJul 5, 03:45 UTC1h 0m
2026-07-05 BTK6201 - Jul 5, 01:20 UTCJul 5, 01:35 UTC15m
2026-07-04 BTK6825 - Jul 4, 05:25 UTCJul 4, 06:30 UTC1h 5m
2026-07-04 BTK6824 - Jul 4, 03:00 UTCJul 4, 03:55 UTC55m
2026-07-04 BTK6201 - Jul 4, 01:10 UTCJul 4, 01:25 UTC15m
2026-07-03 BTK6825 - Jul 3, 05:00 UTCJul 3, 06:00 UTC1h 0m
2026-07-03 BTK6824 - Jul 3, 02:40 UTCJul 3, 03:40 UTC1h 0m
2026-07-03 BTK6201 - Jul 3, 01:05 UTCJul 3, 01:20 UTC15m
2026-07-02 BTK6339 - Jul 2, 05:40 UTCJul 2, 06:00 UTC20m
2026-07-01 BTK6338 - Jul 1, 23:45 UTCJul 2, 00:15 UTC30m
2026-07-01 BTK6801 - Jul 1, 09:55 UTCJul 1, 10:15 UTC20m

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

Mode-S 8A0638 frequently asked

What is Mode-S code 8A0638?
8A0638 is an ICAO 24-bit transponder address. Allocated to Indonesia. Assigned to PK-LUT.
Where is Mode-S 8A0638 registered?
Mode-S code 8A0638 is allocated to Indonesia (ID). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 8A0638 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 8A0638, octal 42403070, decimal 9,045,560.
What flights does 8A0638 operate?
Mode-S 8A0638 has broadcast 20 distinct callsigns, including BTK6825, BTK6864, BTK6865, BTK6824, BTK6819.