Apparatus

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sensors Mode-S transponder

8A03C6

ICAO 24-bit transponder address · allocated to Indonesia

Currently assigned to PK-GFU · BOEING 737-800

Hex
8A03C6
Octal
42401706
Decimal
9,044,934
Country
ID
Tail
PK-GFU
Type
B738
No current signal · last broadcast 1h ago
Flights observed
157
Distinct callsigns
20
Country
ID
Last broadcast
1h ago

Last known position

Most recent position reported by Mode-S 8A03C6.

Country allocation

The ICAO 24-bit address 8A03C6 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
GIA121 Garuda Indonesia 6 2026-05-21
GIA867 Garuda Indonesia 5 2026-05-27
GIA823 Garuda Indonesia 4 2026-05-04
GIA646 Garuda Indonesia 4 2026-05-04
GIA422 Garuda Indonesia 4 2026-05-25
GIA193 Garuda Indonesia 4 2026-05-28
GIA183 Garuda Indonesia 4 2026-05-08
GIA866 Garuda Indonesia 3 2026-05-27
GIA833 Garuda Indonesia 3 2026-05-19
GIA824 Garuda Indonesia 3 2026-05-18
GIA822 Garuda Indonesia 3 2026-05-16
GIA682 Garuda Indonesia 3 2026-05-19
GIA457 Garuda Indonesia 3 2026-05-05
GIA187 Garuda Indonesia 3 2026-05-23
GIA175 Garuda Indonesia 3 2026-05-08
GIA147 Garuda Indonesia 3 2026-05-14
GIA126 Garuda Indonesia 3 2026-05-18
GIA839 Garuda Indonesia 2 2026-05-19
GIA825 Garuda Indonesia 2 2026-05-19
GIA647 Garuda Indonesia 2 2026-04-26

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-30 GIA152 CGK → BTH May 30, 02:55 UTCMay 30, 03:30 UTC35m
2026-05-29 GIA221 SOC → CGK May 29, 09:15 UTCMay 29, 10:05 UTC50m
2026-05-29 GIA228 CGK → SOC May 29, 07:00 UTCMay 29, 08:00 UTC1h 0m
2026-05-29 GIA204 CGK → YIA May 29, 01:00 UTCMay 29, 03:45 UTC2h 45m
2026-05-28 GIA193 KNO → CGK May 28, 13:15 UTCMay 28, 15:00 UTC1h 45m
2026-05-28 GIA190 CGK → KNO May 28, 09:50 UTCMay 28, 11:25 UTC1h 35m
2026-05-27 GIA605 UPG → CGK May 27, 22:45 UTCMay 28, 07:45 UTC9h 0m
2026-05-27 GIA867 BKK → CGK May 27, 10:20 UTCMay 27, 10:35 UTC15m
2026-05-27 GIA867 BKK → CGK May 27, 07:30 UTCMay 27, 09:45 UTC2h 15m
2026-05-27 GIA866 CGK → BKK May 27, 02:54 UTCMay 27, 05:59 UTC3h 5m
2026-05-26 GIA821 KUL → CGK May 26, 05:05 UTCMay 26, 06:49 UTC1h 45m
2026-05-26 GIA820 CGK → KUL May 26, 01:40 UTCMay 26, 03:19 UTC1h 40m
2026-05-25 GIA422 CGK → DPS May 25, 06:55 UTCMay 25, 11:10 UTC4h 15m
2026-05-25 GIA611 UPG → CGK May 25, 05:10 UTCMay 25, 05:35 UTC25m
2026-05-24 GIA422 CGK → DPS May 24, 06:50 UTCMay 24, 11:30 UTC4h 40m
2026-05-24 GIA610 CGK → UPG May 24, 00:15 UTCMay 24, 00:40 UTC25m
2026-05-23 GIA193 KNO → CGK May 23, 09:50 UTCMay 23, 15:00 UTC5h 10m
2026-05-23 GIA187 KNO → CGK May 23, 06:20 UTCMay 23, 08:10 UTC1h 50m
2026-05-23 GIA184 CGK → KNO May 23, 02:55 UTCMay 23, 04:25 UTC1h 30m
2026-05-23 GIA207 YIA → CGK May 23, 00:15 UTCMay 23, 01:05 UTC50m
2026-05-22 GIA206 CGK → YIA May 22, 12:35 UTCMay 22, 13:05 UTC30m
2026-05-22 GIA1534 BTH → CGK May 22, 10:05 UTCMay 22, 11:10 UTC1h 5m
2026-05-22 GIA1504 CGK → BTH May 22, 07:20 UTCMay 22, 08:20 UTC1h 0m
2026-05-22 GIA204 CGK → YIA May 22, 01:10 UTCMay 22, 03:55 UTC2h 45m
2026-05-21 GIA121 KNO → CGK May 21, 12:25 UTCMay 21, 12:40 UTC15m
2026-05-21 GIA121 KNO → CGK May 21, 08:20 UTCMay 21, 11:55 UTC3h 35m
2026-05-21 GIA118 CGK → KNO May 21, 07:35 UTCMay 21, 07:45 UTC10m
2026-05-21 GIA205 YIA → CGK May 21, 01:20 UTCMay 21, 04:20 UTC3h 0m
2026-05-20 GIA430 CGK → LOP May 20, 04:25 UTCMay 20, 09:10 UTC4h 46m
2026-05-20 GIA683 SOQ → CGK May 20, 02:30 UTCMay 20, 03:10 UTC40m
2026-05-19 GIA682 CGK → SOQ May 19, 17:30 UTCMay 19, 17:50 UTC20m
2026-05-19 GIA839 SIN → CGK May 19, 15:10 UTCMay 19, 15:20 UTC10m
2026-05-19 GIA839 SIN → CGK May 19, 14:05 UTCMay 19, 14:35 UTC30m
2026-05-19 GIA838 CGK → SIN May 19, 11:05 UTCMay 19, 12:20 UTC1h 15m
2026-05-19 GIA833 SIN → CGK May 19, 09:15 UTCMay 19, 09:25 UTC10m
2026-05-19 GIA833 SIN → CGK May 19, 08:05 UTCMay 19, 08:40 UTC35m
2026-05-19 GIA832 CGK → SIN May 19, 05:05 UTCMay 19, 06:30 UTC1h 25m
2026-05-19 GIA825 SIN → CGK May 19, 02:00 UTCMay 19, 03:20 UTC1h 20m
2026-05-18 GIA824 CGK → SIN May 18, 23:00 UTCMay 19, 00:15 UTC1h 15m
2026-05-18 GIA575 BPN → CGK May 18, 12:40 UTCMay 18, 12:55 UTC15m
2026-05-18 GIA127 DJB → CGK May 18, 04:30 UTCMay 18, 05:30 UTC1h 0m
2026-05-18 GIA126 CGK → DJB May 18, 03:01 UTCMay 18, 03:15 UTC15m
2026-05-18 GIA126 CGK → DJB May 18, 02:20 UTCMay 18, 02:30 UTC10m
2026-05-17 GIA612 CGK → UPG May 17, 09:10 UTCMay 17, 14:20 UTC5h 10m
2026-05-17 GIA409 DPS → CGK May 17, 07:15 UTCMay 17, 07:45 UTC30m
2026-05-16 GIA822 CGK → SIN May 16, 12:35 UTCMay 16, 13:55 UTC1h 20m
2026-05-16 GIA867 BKK → CGK May 16, 07:35 UTCMay 16, 09:45 UTC2h 10m
2026-05-16 GIA866 CGK → BKK May 16, 03:25 UTCMay 16, 06:01 UTC2h 36m
2026-05-15 GIA422 CGK → DPS May 15, 07:00 UTCMay 15, 11:25 UTC4h 25m
2026-05-15 GIA610 CGK → UPG May 15, 00:15 UTCMay 15, 05:25 UTC5h 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-GFU page for operator, model, and routing details .

Mode-S 8A03C6 frequently asked

What is Mode-S code 8A03C6?
8A03C6 is an ICAO 24-bit transponder address. Allocated to Indonesia. Assigned to PK-GFU.
Where is Mode-S 8A03C6 registered?
Mode-S code 8A03C6 is allocated to Indonesia (ID). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 8A03C6 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 8A03C6, octal 42401706, decimal 9,044,934.
What flights does 8A03C6 operate?
Mode-S 8A03C6 has broadcast 20 distinct callsigns, including GIA121, GIA867, GIA823, GIA646, GIA422.