Apparatus

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sensors Mode-S transponder

8A04F4

ICAO 24-bit transponder address · allocated to Indonesia

Currently assigned to PK-GNQ · BOEING 737-800

Hex
8A04F4
Octal
42402364
Decimal
9,045,236
Country
ID
Tail
PK-GNQ
Type
B738
No current signal · last broadcast Jul 25, 10:30 UTC
Flights observed
382
Distinct callsigns
20
Country
ID
Last broadcast
Jul 25, 10:30 UTC

Last known position

Most recent position reported by Mode-S 8A04F4.

Country allocation

The ICAO 24-bit address 8A04F4 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
GIA165 - 9 2026-07-12
GIA825 Garuda Indonesia 7 2026-07-20
GIA656 Garuda Indonesia 7 2026-06-12
GIA616 - 7 2026-07-02
GIA072 - 7 2026-07-18
GIA824 - 6 2026-07-19
GIA155 - 6 2026-07-04
GIA149 - 6 2026-06-24
GIA073 - 6 2026-07-19
GIA839 Garuda Indonesia 5 2026-07-20
GIA833 Garuda Indonesia 5 2026-07-20
GIA657 Garuda Indonesia 5 2026-06-13
GIA234 - 5 2026-06-27
GIA225 - 5 2026-07-17
GIA162 - 5 2026-07-12
GIA127 - 5 2026-07-16
GIA126 - 5 2026-07-16
GIA867 Garuda Indonesia 4 2026-07-25
GIA837 Garuda Indonesia 4 2026-06-14
GIA8320 - 4 2026-07-17

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-25 GIA867 BKK → CGK Jul 25, 10:20 UTCJul 25, 10:30 UTC10m
2026-07-25 GIA867 BKK → CGK Jul 25, 07:30 UTCJul 25, 09:45 UTC2h 15m
2026-07-25 GIA866 CGK → BKK Jul 25, 02:50 UTCJul 25, 05:50 UTC3h 0m
2026-07-24 GIA537 BDJ → CGK Jul 24, 10:20 UTCJul 24, 10:35 UTC15m
2026-07-23 GIA664 CGK → DJJ Jul 23, 17:50 UTCJul 24, 04:45 UTC10h 55m
2026-07-23 GIA665 DJJ → CGK Jul 23, 05:05 UTCJul 23, 05:15 UTC10m
2026-07-22 GIA664 CGK → DJJ Jul 22, 17:45 UTCJul 22, 18:10 UTC25m
2026-07-22 GIA821 KUL → CGK Jul 22, 05:10 UTCJul 22, 05:25 UTC15m
2026-07-22 GIA820 CGK → KUL Jul 22, 01:40 UTCJul 22, 03:30 UTC1h 50m
2026-07-21 GIA433 LOP → CGK Jul 21, 08:25 UTCJul 21, 08:40 UTC15m
2026-07-21 GIA430 CGK → LOP Jul 21, 04:20 UTCJul 21, 05:05 UTC45m
2026-07-21 GIA649 - Jul 21, 02:15 UTCJul 21, 02:30 UTC15m
2026-07-20 GIA648 - Jul 20, 18:30 UTCJul 20, 18:50 UTC20m
2026-07-20 GIA839 SIN → CGK Jul 20, 15:10 UTCJul 20, 15:25 UTC15m
2026-07-20 GIA839 SIN → CGK Jul 20, 14:20 UTCJul 20, 14:35 UTC15m
2026-07-20 GIA838 - Jul 20, 10:50 UTCJul 20, 12:10 UTC1h 20m
2026-07-20 GIA833 SIN → CGK Jul 20, 09:05 UTCJul 20, 09:15 UTC10m
2026-07-20 GIA832 CGK → SIN Jul 20, 05:05 UTCJul 20, 05:15 UTC10m
2026-07-20 GIA825 SIN → CGK Jul 20, 02:15 UTCJul 20, 03:20 UTC1h 5m
2026-07-19 GIA824 - Jul 19, 23:05 UTCJul 20, 00:20 UTC1h 15m
2026-07-19 GIA221 - Jul 19, 09:10 UTCJul 19, 10:05 UTC55m
2026-07-19 GIA228 - Jul 19, 07:15 UTCJul 19, 08:05 UTC50m
2026-07-19 GIA322 - Jul 19, 02:15 UTCJul 19, 05:35 UTC3h 20m
2026-07-19 GIA073 - Jul 19, 00:25 UTCJul 19, 00:55 UTC30m
2026-07-18 GIA072 - Jul 18, 11:00 UTCJul 18, 11:10 UTC10m
2026-07-18 GIA433 - Jul 18, 08:25 UTCJul 18, 08:35 UTC10m
2026-07-18 GIA430 - Jul 18, 04:20 UTCJul 18, 05:00 UTC40m
2026-07-18 GIA607 - Jul 18, 02:05 UTCJul 18, 02:14 UTC10m
2026-07-17 GIA8330 - Jul 17, 18:10 UTCJul 17, 19:55 UTC1h 45m
2026-07-17 GIA8320 - Jul 17, 15:55 UTCJul 17, 16:10 UTC15m
2026-07-17 GIA8320 - Jul 17, 14:35 UTCJul 17, 15:00 UTC25m
2026-07-17 GIA225 - Jul 17, 04:49 UTCJul 17, 05:04 UTC15m
2026-07-17 GIA222 - Jul 17, 01:59 UTCJul 17, 02:39 UTC40m
2026-07-17 GIA401 DPS → CGK Jul 17, 00:25 UTCJul 17, 00:40 UTC15m
2026-07-16 GIA426 - Jul 16, 11:45 UTCJul 16, 12:30 UTC45m
2026-07-16 GIA113 - Jul 16, 09:55 UTCJul 16, 10:15 UTC20m
2026-07-16 GIA108 - Jul 16, 07:30 UTCJul 16, 07:40 UTC10m
2026-07-16 GIA127 - Jul 16, 05:50 UTCJul 16, 06:00 UTC10m
2026-07-16 GIA127 - Jul 16, 05:10 UTCJul 16, 05:20 UTC10m
2026-07-16 GIA126 - Jul 16, 02:25 UTCJul 16, 03:20 UTC55m
2026-07-16 GIA231 - Jul 16, 00:55 UTCJul 16, 01:10 UTC15m
2026-07-15 GIA246 - Jul 15, 10:45 UTCJul 15, 11:10 UTC25m
2026-07-15 GIA177 - Jul 15, 08:55 UTCJul 15, 09:15 UTC20m
2026-07-15 GIA174 - Jul 15, 05:15 UTCJul 15, 05:25 UTC10m
2026-07-15 GIA623 - Jul 15, 01:15 UTCJul 15, 01:30 UTC15m
2026-07-14 GIA622 - Jul 14, 19:40 UTCJul 14, 20:05 UTC25m
2026-07-14 GIA563 - Jul 14, 10:30 UTCJul 14, 10:40 UTC10m
2026-07-14 GIA225 - Jul 14, 04:30 UTCJul 14, 04:40 UTC10m
2026-07-14 GIA222 - Jul 14, 02:05 UTCJul 14, 02:55 UTC50m
2026-07-14 GIA401 - Jul 14, 00:35 UTCJul 14, 00:50 UTC15m

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-GNQ page for operator, model, and routing details .

Mode-S 8A04F4 frequently asked

What is Mode-S code 8A04F4?
8A04F4 is an ICAO 24-bit transponder address. Allocated to Indonesia. Assigned to PK-GNQ.
Where is Mode-S 8A04F4 registered?
Mode-S code 8A04F4 is allocated to Indonesia (ID). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 8A04F4 broadcasting right now?
No active broadcast right now. Last signal was Jul 25, 10:30 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 8A04F4, octal 42402364, decimal 9,045,236.
What flights does 8A04F4 operate?
Mode-S 8A04F4 has broadcast 20 distinct callsigns, including GIA165, GIA825, GIA656, GIA616, GIA072.