Apparatus

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sensors Mode-S transponder

8A051F

ICAO 24-bit transponder address · allocated to Indonesia

Currently assigned to PK-LAW · AIRBUS A-320

Hex
8A051F
Octal
42402437
Decimal
9,045,279
Country
ID
Tail
PK-LAW
Type
A320
No current signal · last broadcast 2h ago
Flights observed
124
Distinct callsigns
20
Country
ID
Last broadcast
2h ago

Last known position

Most recent position reported by Mode-S 8A051F.

Country allocation

The ICAO 24-bit address 8A051F 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
BTK7309 Batik Air 10 2026-05-22
BTK7055 Batik Air 7 2026-05-21
BTK7517 Batik Air 6 2026-05-21
BTK7515 Batik Air 6 2026-05-22
BTK6857 Batik Air 5 2026-04-28
BTK7513 Batik Air 4 2026-05-20
BTK7511 Batik Air 4 2026-05-22
BTK7311 Batik Air 4 2026-05-19
BTK7521 Batik Air 3 2026-05-14
BTK7512 Batik Air 3 2026-05-21
BTK7308 Batik Air 3 2026-05-22
BTK7066 Batik Air 3 2026-04-27
BTK7065 Batik Air 3 2026-04-27
BTK7053 Batik Air 3 2026-05-14
BTK7051 Batik Air 3 2026-05-20
BTK6852 Batik Air 3 2026-04-28
BTK6578 Batik Air 3 2026-05-24
BTK7501 Batik Air 2 2026-05-17
BTK7150 Batik Air 2 2026-04-15
BTK7054 Batik Air 2 2026-05-06

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-30 BTK7146 SIN → KNO May 30, 06:20 UTCMay 30, 07:05 UTC45m
2026-05-30 BTK7147 KNO → SIN May 30, 04:00 UTCMay 30, 04:45 UTC45m
2026-05-30 BTK7011 HLP → KNO May 30, 00:15 UTCMay 30, 01:55 UTC1h 40m
2026-05-28 BTK7010 KNO → HLP May 28, 03:35 UTCMay 28, 05:40 UTC2h 5m
2026-05-28 BTK7011 HLP → KNO May 28, 00:15 UTCMay 28, 01:45 UTC1h 30m
2026-05-27 BTK6143 UPG → CGK May 27, 10:40 UTCMay 27, 10:55 UTC15m
2026-05-25 BTK6292 CGK → UPG May 25, 02:15 UTCMay 25, 02:40 UTC25m
2026-05-24 BTK6264 CGK → UPG May 24, 19:25 UTCMay 24, 19:50 UTC25m
2026-05-24 BTK6578 CGK → SUB May 24, 08:50 UTCMay 24, 12:10 UTC3h 20m
2026-05-23 BTK7579 SUB → CGK May 23, 08:45 UTCMay 23, 11:50 UTC3h 5m
2026-05-22 BTK7511 HLP → SUB May 22, 22:55 UTCMay 23, 05:45 UTC6h 49m
2026-05-22 BTK7515 HLP → SUB May 22, 09:35 UTCMay 22, 13:05 UTC3h 30m
2026-05-22 BTK7308 DPS → HLP May 22, 07:45 UTCMay 22, 08:05 UTC20m
2026-05-22 BTK7309 HLP → DPS May 22, 04:00 UTCMay 22, 04:40 UTC40m
2026-05-21 BTK7055 HLP → PLM May 21, 12:25 UTCMay 21, 12:40 UTC15m
2026-05-21 BTK7512 SUB → HLP May 21, 06:55 UTCMay 21, 10:10 UTC3h 15m
2026-05-21 BTK7517 HLP → SUB May 21, 02:40 UTCMay 21, 05:50 UTC3h 10m
2026-05-20 BTK7511 HLP → SUB May 20, 22:35 UTCMay 21, 01:30 UTC2h 55m
2026-05-20 BTK7515 HLP → SUB May 20, 09:35 UTCMay 20, 12:25 UTC2h 50m
2026-05-20 BTK7051 HLP → PLM May 20, 06:10 UTCMay 20, 06:25 UTC15m
2026-05-20 BTK7513 HLP → SUB May 20, 01:55 UTCMay 20, 02:30 UTC35m
2026-05-19 BTK7311 HLP → DPS May 19, 09:05 UTCMay 19, 09:40 UTC35m
2026-05-19 BTK7309 HLP → DPS May 19, 04:00 UTCMay 19, 07:50 UTC3h 50m
2026-05-18 BTK7515 HLP → SUB May 18, 08:50 UTCMay 18, 09:20 UTC30m
2026-05-18 BTK7513 HLP → SUB May 18, 02:05 UTCMay 18, 02:40 UTC35m
2026-05-17 BTK7055 HLP → PLM May 17, 12:10 UTCMay 17, 12:25 UTC15m
2026-05-17 BTK7501 HLP → SUB May 17, 06:55 UTCMay 17, 09:55 UTC3h 0m
2026-05-17 BTK7517 HLP → SUB May 17, 02:40 UTCMay 17, 05:40 UTC3h 0m
2026-05-17 - - May 17, 01:10 UTCMay 17, 01:25 UTC15m
2026-05-16 BTK7513 HLP → SUB May 16, 02:05 UTCMay 17, 01:25 UTC23h 20m
2026-05-15 BTK7309 HLP → DPS May 15, 03:55 UTCMay 15, 04:35 UTC40m
2026-05-14 BTK7521 HLP → SUB May 14, 13:15 UTCMay 15, 01:10 UTC11h 55m
2026-05-14 BTK7515 HLP → SUB May 14, 09:00 UTCMay 14, 09:40 UTC40m
2026-05-14 BTK7308 DPS → HLP May 14, 07:55 UTCMay 14, 08:05 UTC10m
2026-05-14 BTK7309 HLP → DPS May 14, 04:05 UTCMay 14, 04:30 UTC25m
2026-05-14 BTK7053 HLP → PLM May 14, 00:20 UTCMay 14, 00:35 UTC15m
2026-05-13 BTK7521 HLP → SUB May 13, 13:31 UTCMay 13, 14:00 UTC30m
2026-05-13 BTK7515 HLP → SUB May 13, 09:25 UTCMay 13, 12:20 UTC2h 55m
2026-05-13 BTK7309 HLP → DPS May 13, 04:20 UTCMay 13, 05:00 UTC40m
2026-05-12 BTK7055 HLP → PLM May 12, 12:30 UTCMay 12, 12:45 UTC15m
2026-05-12 BTK7051 HLP → PLM May 12, 06:05 UTCMay 12, 06:15 UTC10m
2026-05-11 BTK7055 HLP → PLM May 11, 11:25 UTCMay 11, 11:40 UTC15m
2026-05-11 BTK7309 HLP → DPS May 11, 04:00 UTCMay 11, 08:05 UTC4h 5m
2026-05-11 BTK7053 HLP → PLM May 11, 00:34 UTCMay 11, 00:45 UTC10m
2026-05-10 BTK6588 CGK → SUB May 10, 12:59 UTCMay 10, 22:55 UTC9h 55m
2026-05-10 BTK6253 BPN → CGK May 10, 08:35 UTCMay 10, 08:50 UTC15m
2026-05-10 BTK6250 CGK → BPN May 10, 04:15 UTCMay 10, 04:25 UTC10m
2026-05-10 BTK6573 SUB → CGK May 10, 02:45 UTCMay 10, 03:00 UTC15m
2026-05-09 BTK6572 CGK → SUB May 9, 23:20 UTCMay 10, 00:05 UTC45m
2026-05-09 BTK6401 SUB → CGK May 9, 10:15 UTCMay 9, 10:45 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-LAW page for operator, model, and routing details .

Mode-S 8A051F frequently asked

What is Mode-S code 8A051F?
8A051F is an ICAO 24-bit transponder address. Allocated to Indonesia. Assigned to PK-LAW.
Where is Mode-S 8A051F registered?
Mode-S code 8A051F is allocated to Indonesia (ID). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 8A051F broadcasting right now?
No active broadcast right now. Last signal was 2h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 8A051F, octal 42402437, decimal 9,045,279.
What flights does 8A051F operate?
Mode-S 8A051F has broadcast 20 distinct callsigns, including BTK7309, BTK7055, BTK7517, BTK7515, BTK6857.