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sensors Mode-S transponder

8A0A43

ICAO 24-bit transponder address · allocated to Indonesia

Currently assigned to PK-GUF · BOEING 737-800

Hex
8A0A43
Octal
42405103
Decimal
9,046,595
Country
ID
Tail
PK-GUF
Type
B738
No current signal · last broadcast Jul 26, 12:30 UTC
Flights observed
214
Distinct callsigns
20
Country
ID
Last broadcast
Jul 26, 12:30 UTC

Last known position

Most recent position reported by Mode-S 8A0A43.

Country allocation

The ICAO 24-bit address 8A0A43 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
GIA157 - 10 2026-07-17
GIA179 - 8 2026-07-14
GIA176 - 7 2026-07-14
GIA821 - 6 2026-07-17
GIA154 - 6 2026-07-17
GIA149 - 6 2026-07-05
GIA820 - 5 2026-07-17
GIA165 - 5 2026-07-06
GIA656 Garuda Indonesia 4 2026-07-08
GIA162 - 4 2026-07-06
GIA137 Garuda Indonesia 4 2026-07-24
GIA121 Garuda Indonesia 4 2026-06-16
GIA867 - 3 2026-07-16
GIA649 - 3 2026-07-04
GIA648 Garuda Indonesia 3 2026-05-23
GIA605 - 3 2026-07-19
GIA535 Garuda Indonesia 3 2026-07-20
GIA155 - 3 2026-07-07
GIA153 - 3 2026-07-13
GIA147 Garuda Indonesia 3 2026-04-19

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 GIA647 AMQ → CGK Jul 26, 05:10 UTCJul 26, 12:30 UTC7h 21m
2026-07-24 - - Jul 24, 11:00 UTCJul 24, 11:10 UTC10m
2026-07-24 GIA137 PGK → CGK Jul 24, 06:05 UTCJul 24, 06:25 UTC20m
2026-07-24 GIA403 DPS → CGK Jul 24, 01:10 UTCJul 24, 01:20 UTC10m
2026-07-23 GIA426 CGK → DPS Jul 23, 11:50 UTCJul 23, 12:35 UTC45m
2026-07-23 GIA322 CGK → SUB Jul 23, 02:10 UTCJul 23, 02:55 UTC45m
2026-07-21 GIA561 - Jul 21, 00:05 UTCJul 21, 00:20 UTC15m
2026-07-20 GIA177 - Jul 20, 08:45 UTCJul 20, 09:05 UTC20m
2026-07-20 GIA177 - Jul 20, 06:10 UTCJul 20, 08:00 UTC1h 50m
2026-07-20 GIA174 - Jul 20, 05:15 UTCJul 20, 05:30 UTC15m
2026-07-20 GIA535 BDJ → CGK Jul 20, 03:35 UTCJul 20, 03:50 UTC15m
2026-07-19 GIA193 - Jul 19, 14:55 UTCJul 19, 15:05 UTC10m
2026-07-19 GIA190 CGK → KNO Jul 19, 09:55 UTCJul 19, 14:25 UTC4h 30m
2026-07-19 GIA605 - Jul 19, 07:45 UTCJul 19, 08:15 UTC30m
2026-07-18 GIA076 - Jul 18, 01:50 UTCJul 18, 02:05 UTC15m
2026-07-17 GIA157 - Jul 17, 12:10 UTCJul 17, 12:30 UTC20m
2026-07-17 GIA157 - Jul 17, 11:04 UTCJul 17, 11:39 UTC35m
2026-07-17 GIA154 - Jul 17, 08:25 UTCJul 17, 09:20 UTC55m
2026-07-17 GIA821 - Jul 17, 06:50 UTCJul 17, 07:00 UTC10m
2026-07-17 GIA821 - Jul 17, 05:15 UTCJul 17, 06:10 UTC55m
2026-07-17 GIA820 - Jul 17, 01:45 UTCJul 17, 03:30 UTC1h 45m
2026-07-16 GIA867 - Jul 16, 10:15 UTCJul 16, 10:35 UTC20m
2026-07-16 GIA867 - Jul 16, 08:50 UTCJul 16, 09:40 UTC50m
2026-07-16 GIA867 - Jul 16, 07:30 UTCJul 16, 08:00 UTC30m
2026-07-16 GIA866 - Jul 16, 02:45 UTCJul 16, 06:00 UTC3h 15m
2026-07-15 GIA402 - Jul 15, 00:20 UTCJul 15, 01:05 UTC45m
2026-07-14 GIA179 - Jul 14, 12:25 UTCJul 14, 12:45 UTC20m
2026-07-14 GIA179 - Jul 14, 11:20 UTCJul 14, 11:35 UTC15m
2026-07-14 GIA176 - Jul 14, 08:40 UTCJul 14, 09:50 UTC1h 10m
2026-07-14 GIA821 - Jul 14, 05:25 UTCJul 14, 06:15 UTC50m
2026-07-14 GIA820 - Jul 14, 02:20 UTCJul 14, 03:25 UTC1h 5m
2026-07-13 GIA411 - Jul 13, 09:25 UTCJul 13, 09:40 UTC15m
2026-07-13 GIA153 - Jul 13, 02:15 UTCJul 13, 02:35 UTC20m
2026-07-13 GIA150 - Jul 13, 00:15 UTCJul 13, 00:40 UTC25m
2026-07-12 GIA310 - Jul 12, 07:31 UTCJul 12, 08:15 UTC45m
2026-07-12 GIA327 - Jul 12, 05:35 UTCJul 12, 05:50 UTC15m
2026-07-12 GIA322 - Jul 12, 02:10 UTCJul 12, 02:55 UTC45m
2026-07-12 GIA073 - Jul 12, 00:25 UTCJul 12, 00:55 UTC30m
2026-07-11 GIA072 - Jul 11, 11:20 UTCJul 11, 11:40 UTC20m
2026-07-11 GIA431 - Jul 11, 04:50 UTCJul 11, 05:20 UTC30m
2026-07-10 GIA118 - Jul 10, 07:00 UTCJul 10, 11:30 UTC4h 30m
2026-07-10 GIA127 - Jul 10, 04:35 UTCJul 10, 05:35 UTC1h 0m
2026-07-10 GIA126 - Jul 10, 03:05 UTCJul 10, 03:25 UTC20m
2026-07-08 GIA656 CGK → DJJ Jul 8, 16:35 UTCJul 9, 08:10 UTC15h 35m
2026-07-08 GIA157 - Jul 8, 11:25 UTCJul 8, 12:30 UTC1h 5m
2026-07-08 GIA154 - Jul 8, 09:25 UTCJul 8, 09:45 UTC20m
2026-07-08 GIA140 - Jul 8, 01:00 UTCJul 8, 06:15 UTC5h 15m
2026-07-07 GIA155 - Jul 7, 06:40 UTCJul 7, 07:10 UTC30m
2026-07-07 GIA155 - Jul 7, 05:45 UTCJul 7, 06:00 UTC15m
2026-07-07 GIA152 - Jul 7, 03:45 UTCJul 7, 04:05 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-GUF page for operator, model, and routing details .

Mode-S 8A0A43 frequently asked

What is Mode-S code 8A0A43?
8A0A43 is an ICAO 24-bit transponder address. Allocated to Indonesia. Assigned to PK-GUF.
Where is Mode-S 8A0A43 registered?
Mode-S code 8A0A43 is allocated to Indonesia (ID). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 8A0A43 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 12:30 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 8A0A43, octal 42405103, decimal 9,046,595.
What flights does 8A0A43 operate?
Mode-S 8A0A43 has broadcast 20 distinct callsigns, including GIA157, GIA179, GIA176, GIA821, GIA154.