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sensors Mode-S transponder

8A0A73

ICAO 24-bit transponder address · allocated to Indonesia

Currently assigned to PK-GDC

Hex
8A0A73
Octal
42405163
Decimal
9,046,643
Country
ID
Tail
PK-GDC
Type
B38M
No current signal · last broadcast Jul 26, 12:50 UTC
Flights observed
410
Distinct callsigns
14
Country
ID
Last broadcast
Jul 26, 12:50 UTC

Last known position

Most recent position reported by Mode-S 8A0A73.

Country allocation

The ICAO 24-bit address 8A0A73 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 14 distinct

Callsign Airline Flights Last seen
GIA185 - 60 2026-07-03
GIA107 Garuda Indonesia 50 2026-07-26
GIA182 - 49 2026-07-03
GIA102 Garuda Indonesia 47 2026-07-26
GIA513 Garuda Indonesia 44 2026-07-26
GIA113 - 41 2026-07-03
GIA119 - 37 2026-07-26
GIA108 - 37 2026-07-03
GIA114 Garuda Indonesia 34 2026-07-26
GIA512 Garuda Indonesia 4 2026-07-25
GIA317 - 2 2026-07-17
GIA312 - 2 2026-07-17
GIA109 - 1 2026-07-16
GIA104 - 1 2026-07-16

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 GIA119 - Jul 26, 12:35 UTCJul 26, 12:50 UTC15m
2026-07-26 GIA114 CGK → PLM Jul 26, 10:15 UTCJul 26, 10:25 UTC10m
2026-07-26 GIA513 PNK → CGK Jul 26, 08:20 UTCJul 26, 08:40 UTC20m
2026-07-26 GIA107 PLM → CGK Jul 26, 03:15 UTCJul 26, 03:35 UTC20m
2026-07-26 GIA102 CGK → PLM Jul 26, 00:50 UTCJul 26, 01:00 UTC10m
2026-07-25 GIA119 - Jul 25, 12:15 UTCJul 25, 12:30 UTC15m
2026-07-25 GIA114 CGK → PLM Jul 25, 10:00 UTCJul 25, 10:10 UTC10m
2026-07-25 GIA513 PNK → CGK Jul 25, 08:20 UTCJul 25, 08:35 UTC15m
2026-07-25 GIA512 CGK → PNK Jul 25, 05:05 UTCJul 25, 05:15 UTC10m
2026-07-25 GIA107 PLM → CGK Jul 25, 03:10 UTCJul 25, 03:20 UTC10m
2026-07-25 GIA102 CGK → PLM Jul 25, 00:50 UTCJul 25, 01:00 UTC10m
2026-07-24 GIA119 - Jul 24, 12:30 UTCJul 24, 12:45 UTC15m
2026-07-24 GIA114 CGK → PLM Jul 24, 10:10 UTCJul 24, 10:20 UTC10m
2026-07-24 GIA513 PNK → CGK Jul 24, 08:25 UTCJul 24, 08:45 UTC20m
2026-07-24 GIA107 PLM → CGK Jul 24, 03:25 UTCJul 24, 03:40 UTC15m
2026-07-24 GIA102 CGK → PLM Jul 24, 01:00 UTCJul 24, 01:10 UTC10m
2026-07-23 GIA119 - Jul 23, 12:25 UTCJul 23, 12:45 UTC20m
2026-07-23 GIA114 CGK → PLM Jul 23, 09:55 UTCJul 23, 10:05 UTC10m
2026-07-23 GIA513 - Jul 23, 08:15 UTCJul 23, 08:35 UTC20m
2026-07-22 GIA107 PLM → CGK Jul 22, 03:25 UTCJul 22, 03:35 UTC10m
2026-07-22 GIA102 CGK → PLM Jul 22, 01:00 UTCJul 22, 01:15 UTC15m
2026-07-21 GIA119 - Jul 21, 12:15 UTCJul 21, 12:30 UTC15m
2026-07-21 GIA114 - Jul 21, 09:55 UTCJul 21, 10:10 UTC15m
2026-07-21 GIA513 - Jul 21, 08:20 UTCJul 21, 08:35 UTC15m
2026-07-21 GIA107 PLM → CGK Jul 21, 03:10 UTCJul 21, 03:25 UTC15m
2026-07-21 GIA102 CGK → PLM Jul 21, 00:50 UTCJul 21, 01:05 UTC15m
2026-07-20 GIA119 - Jul 20, 12:15 UTCJul 20, 12:30 UTC15m
2026-07-20 GIA114 - Jul 20, 09:55 UTCJul 20, 10:10 UTC15m
2026-07-20 GIA513 - Jul 20, 08:15 UTCJul 20, 08:35 UTC20m
2026-07-20 GIA107 PLM → CGK Jul 20, 03:15 UTCJul 20, 03:35 UTC20m
2026-07-20 GIA102 CGK → PLM Jul 20, 00:50 UTCJul 20, 01:00 UTC10m
2026-07-19 GIA119 - Jul 19, 12:10 UTCJul 19, 12:30 UTC20m
2026-07-19 GIA114 - Jul 19, 10:10 UTCJul 19, 10:25 UTC15m
2026-07-19 GIA513 - Jul 19, 08:30 UTCJul 19, 08:45 UTC15m
2026-07-19 GIA107 - Jul 19, 03:25 UTCJul 19, 03:40 UTC15m
2026-07-19 GIA102 - Jul 19, 00:50 UTCJul 19, 01:05 UTC15m
2026-07-18 GIA107 - Jul 18, 03:20 UTCJul 18, 03:35 UTC15m
2026-07-18 GIA102 - Jul 18, 01:00 UTCJul 18, 01:20 UTC20m
2026-07-17 GIA317 - Jul 17, 08:45 UTCJul 17, 09:04 UTC20m
2026-07-17 GIA312 - Jul 17, 05:35 UTCJul 17, 06:15 UTC40m
2026-07-17 GIA107 - Jul 17, 03:25 UTCJul 17, 03:39 UTC15m
2026-07-17 GIA102 - Jul 17, 01:00 UTCJul 17, 01:09 UTC10m
2026-07-16 GIA119 - Jul 16, 12:09 UTCJul 16, 12:30 UTC20m
2026-07-16 GIA114 - Jul 16, 09:50 UTCJul 16, 10:04 UTC15m
2026-07-16 GIA109 - Jul 16, 07:30 UTCJul 16, 07:45 UTC15m
2026-07-16 GIA104 - Jul 16, 05:00 UTCJul 16, 05:10 UTC10m
2026-07-16 GIA107 - Jul 16, 03:20 UTCJul 16, 03:40 UTC20m
2026-07-15 GIA107 - Jul 15, 03:15 UTCJul 15, 03:35 UTC20m
2026-07-15 GIA102 - Jul 15, 00:45 UTCJul 15, 01:00 UTC15m
2026-07-14 GIA513 - Jul 14, 08:20 UTCJul 14, 08:40 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-GDC page for operator, model, and routing details .

Mode-S 8A0A73 frequently asked

What is Mode-S code 8A0A73?
8A0A73 is an ICAO 24-bit transponder address. Allocated to Indonesia. Assigned to PK-GDC.
Where is Mode-S 8A0A73 registered?
Mode-S code 8A0A73 is allocated to Indonesia (ID). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 8A0A73 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 12:50 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 8A0A73, octal 42405163, decimal 9,046,643.
What flights does 8A0A73 operate?
Mode-S 8A0A73 has broadcast 14 distinct callsigns, including GIA185, GIA107, GIA182, GIA102, GIA513.