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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 Jul 26, 10:50 UTC
Flights observed
288
Distinct callsigns
20
Country
ID
Last broadcast
Jul 26, 10:50 UTC

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 - 13 2026-07-17
BTK6864 Batik Air 10 2026-07-20
BTK6865 Batik Air 9 2026-07-20
BTK6824 - 8 2026-07-17
BTK7630 - 7 2026-07-18
BTK6201 - 7 2026-07-18
BTK6819 - 6 2026-07-13
BTK6338 - 6 2026-07-12
BTK6202 Batik Air 6 2026-07-19
BTK7797 Batik Air 5 2026-07-22
BTK6884 Batik Air 5 2026-07-25
BTK6857 - 5 2026-07-14
BTK6564 Batik Air 5 2026-07-25
BTK6353 Batik Air 5 2026-07-22
BTK6352 - 5 2026-06-27
BTK6339 - 5 2026-07-13
BTK6205 - 5 2026-07-10
BTK6203 Batik Air 5 2026-07-20
BTK7631 - 4 2026-07-18
BTK7581 Batik Air 4 2026-05-11

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 BTK6878 KNO → DJB Jul 26, 10:00 UTCJul 26, 10:50 UTC50m
2026-07-26 BTK7146 SIN → KNO Jul 26, 06:25 UTCJul 26, 07:10 UTC46m
2026-07-26 BTK7147 KNO → SIN Jul 26, 03:50 UTCJul 26, 04:55 UTC1h 5m
2026-07-25 BTK6884 CGK → KNO Jul 25, 12:20 UTCJul 25, 14:05 UTC1h 45m
2026-07-25 BTK6564 CGK → MLG Jul 25, 06:15 UTCJul 25, 09:35 UTC3h 20m
2026-07-25 BTK6566 CGK → MLG Jul 25, 01:45 UTCJul 25, 04:55 UTC3h 10m
2026-07-24 BTK6807 DJB → CGK Jul 24, 23:20 UTCJul 25, 00:15 UTC55m
2026-07-24 BTK6806 CGK → DJB Jul 24, 10:35 UTCJul 24, 11:20 UTC45m
2026-07-23 BTK6170 CGK → AMQ Jul 23, 21:05 UTCJul 24, 09:00 UTC11h 55m
2026-07-23 BTK7780 SOQ → CGK Jul 23, 05:50 UTCJul 23, 06:05 UTC15m
2026-07-22 BTK7797 CGK → SOQ Jul 22, 17:40 UTCJul 22, 18:05 UTC25m
2026-07-22 BTK6353 SRG → CGK Jul 22, 12:20 UTCJul 22, 12:55 UTC35m
2026-07-22 BTK7540 YIA → CGK Jul 22, 03:20 UTCJul 22, 04:05 UTC45m
2026-07-22 BTK7533 CGK → YIA Jul 22, 01:20 UTCJul 22, 01:40 UTC20m
2026-07-21 BTK6807 DJB → CGK Jul 21, 23:20 UTCJul 22, 00:10 UTC50m
2026-07-21 BTK6806 CGK → DJB Jul 21, 10:35 UTCJul 21, 11:15 UTC40m
2026-07-21 BTK6345 YIA → CGK Jul 21, 08:40 UTCJul 21, 09:15 UTC35m
2026-07-21 BTK6344 CGK → YIA Jul 21, 06:40 UTCJul 21, 07:05 UTC25m
2026-07-21 BTK6861 BTH → CGK Jul 21, 04:20 UTCJul 21, 05:20 UTC1h 0m
2026-07-21 BTK6860 CGK → BTH Jul 21, 01:30 UTCJul 21, 02:40 UTC1h 10m
2026-07-20 BTK6818 CGK → BKS Jul 20, 08:40 UTCJul 21, 00:20 UTC15h 39m
2026-07-20 BTK6865 BTH → CGK Jul 20, 06:50 UTCJul 20, 07:10 UTC20m
2026-07-20 BTK6864 CGK → BTH Jul 20, 03:25 UTCJul 20, 04:25 UTC1h 0m
2026-07-20 BTK6203 PKN → CGK Jul 20, 02:10 UTCJul 20, 02:20 UTC10m
2026-07-19 BTK6202 CGK → PKN Jul 19, 23:25 UTCJul 19, 23:35 UTC10m
2026-07-19 BTK6865 - Jul 19, 06:00 UTCJul 19, 07:15 UTC1h 15m
2026-07-19 BTK6864 CGK → BTH Jul 19, 03:25 UTCJul 19, 04:20 UTC55m
2026-07-19 BTK6203 PKN → CGK Jul 19, 02:05 UTCJul 19, 02:15 UTC10m
2026-07-18 BTK6202 CGK → PKN Jul 18, 23:15 UTCJul 18, 23:25 UTC10m
2026-07-18 BTK7630 - Jul 18, 09:50 UTCJul 18, 10:10 UTC20m
2026-07-18 BTK7630 - Jul 18, 08:30 UTCJul 18, 09:15 UTC45m
2026-07-18 BTK7630 - Jul 18, 07:05 UTCJul 18, 07:15 UTC10m
2026-07-18 BTK7631 - Jul 18, 02:40 UTCJul 18, 05:45 UTC3h 6m
2026-07-18 BTK6201 - Jul 18, 01:15 UTCJul 18, 01:30 UTC15m
2026-07-17 BTK6200 - Jul 17, 08:49 UTCJul 17, 08:59 UTC10m
2026-07-17 BTK6825 - Jul 17, 05:55 UTCJul 17, 06:15 UTC20m
2026-07-17 BTK6825 - Jul 17, 04:54 UTCJul 17, 05:20 UTC25m
2026-07-17 BTK6824 - Jul 17, 02:39 UTCJul 17, 03:34 UTC55m
2026-07-17 BTK6201 - Jul 17, 01:09 UTCJul 17, 01:25 UTC15m
2026-07-16 BTK6825 - Jul 16, 05:20 UTCJul 16, 06:25 UTC1h 5m
2026-07-16 BTK6824 - Jul 16, 02:45 UTCJul 16, 03:35 UTC50m
2026-07-16 BTK6201 - Jul 16, 01:15 UTCJul 16, 01:30 UTC15m
2026-07-15 BTK6865 - Jul 15, 06:40 UTCJul 15, 07:00 UTC20m
2026-07-15 BTK6864 - Jul 15, 03:25 UTCJul 15, 03:50 UTC25m
2026-07-15 BTK6203 - Jul 15, 02:05 UTCJul 15, 02:20 UTC15m
2026-07-14 BTK6202 - Jul 14, 23:15 UTCJul 14, 23:25 UTC10m
2026-07-14 BTK6343 - Jul 14, 08:15 UTCJul 14, 08:50 UTC35m
2026-07-14 BTK6342 - Jul 14, 06:10 UTCJul 14, 06:35 UTC25m
2026-07-14 BTK6857 - Jul 14, 03:45 UTCJul 14, 05:05 UTC1h 20m
2026-07-14 BTK6852 - Jul 14, 01:10 UTCJul 14, 02:20 UTC1h 10m

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 Jul 26, 10:50 UTC.
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, BTK7630.