Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

8A023F

ICAO 24-bit transponder address · allocated to Indonesia

Currently assigned to PK-GMP · BOEING 737-800

Hex
8A023F
Octal
42401077
Decimal
9,044,543
Country
ID
Tail
PK-GMP
Type
B738
No current signal · last broadcast 59m ago
Flights observed
111
Distinct callsigns
20
Country
ID
Last broadcast
59m ago

Last known position

Most recent position reported by Mode-S 8A023F.

Country allocation

The ICAO 24-bit address 8A023F 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
GIA838 Garuda Indonesia 4 2026-05-18
GIA422 Garuda Indonesia 4 2026-05-19
GIA183 Garuda Indonesia 4 2026-05-24
GIA175 Garuda Indonesia 4 2026-05-22
GIA867 Garuda Indonesia 3 2026-05-26
GIA825 Garuda Indonesia 3 2026-05-01
GIA823 Garuda Indonesia 3 2026-05-27
GIA604 Garuda Indonesia 3 2026-06-02
GIA187 Garuda Indonesia 3 2026-05-08
GIA172 Garuda Indonesia 3 2026-05-22
GIA155 Garuda Indonesia 3 2026-06-02
GIA149 Garuda Indonesia 3 2026-05-20
GIA866 Garuda Indonesia 2 2026-05-26
GIA860 Garuda Indonesia 2 2026-05-09
GIA839 Garuda Indonesia 2 2026-05-18
GIA824 Garuda Indonesia 2 2026-04-30
GIA822 Garuda Indonesia 2 2026-05-26
GIA652 Garuda Indonesia 2 2026-04-21
GIA572 Garuda Indonesia 2 2026-05-20
GIA430 Garuda Indonesia 2 2026-05-15

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-06-02 GIA604 CGK → UPG Jun 2, 22:50 UTCJun 2, 23:15 UTC25m
2026-06-02 GIA575 BPN → CGK Jun 2, 12:50 UTCJun 2, 13:05 UTC15m
2026-06-02 GIA155 BTH → CGK Jun 2, 06:25 UTCJun 2, 06:40 UTC15m
2026-06-02 GIA155 BTH → CGK Jun 2, 05:25 UTCJun 2, 05:50 UTC25m
2026-06-02 GIA152 CGK → BTH Jun 2, 03:30 UTCJun 2, 03:55 UTC25m
2026-06-01 GIA605 UPG → CGK Jun 1, 08:05 UTCJun 1, 08:15 UTC10m
2026-05-31 GIA604 CGK → UPG May 31, 22:45 UTCMay 31, 23:10 UTC25m
2026-05-31 GIA147 BTJ → CGK May 31, 10:10 UTCMay 31, 10:50 UTC40m
2026-05-30 GIA432 CGK → LOP May 30, 00:45 UTCMay 30, 12:10 UTC11h 25m
2026-05-29 GIA179 PKU → CGK May 29, 10:50 UTCMay 29, 12:10 UTC1h 20m
2026-05-29 GIA176 CGK → PKU May 29, 09:00 UTCMay 29, 09:35 UTC35m
2026-05-29 GIA104 CGK → PLM May 29, 03:35 UTCMay 29, 03:45 UTC10m
2026-05-29 GIA231 SRG → CGK May 29, 00:25 UTCMay 29, 00:55 UTC30m
2026-05-28 GIA317 SUB → CGK May 28, 08:15 UTCMay 28, 08:45 UTC30m
2026-05-27 GIA560 CGK → BPN May 27, 23:00 UTCMay 27, 23:10 UTC10m
2026-05-27 GIA823 SIN → CGK May 27, 11:25 UTCMay 27, 11:35 UTC10m
2026-05-27 GIA823 SIN → CGK May 27, 10:20 UTCMay 27, 10:55 UTC35m
2026-05-26 GIA822 CGK → SIN May 26, 13:34 UTCMay 26, 14:00 UTC25m
2026-05-26 GIA867 BKK → CGK May 26, 07:34 UTCMay 26, 09:49 UTC2h 15m
2026-05-26 - - May 26, 05:45 UTCMay 26, 05:54 UTC10m
2026-05-26 GIA866 CGK → BKK May 26, 03:30 UTCMay 26, 04:00 UTC30m
2026-05-25 GIA324 CGK → SUB May 25, 13:20 UTCMay 25, 14:05 UTC45m
2026-05-24 GIA183 KNO → CGK May 24, 23:30 UTCMay 24, 23:46 UTC16m
2026-05-24 GIA196 CGK → KNO May 24, 12:30 UTCMay 24, 14:05 UTC1h 35m
2026-05-24 GIA212 CGK → YIA May 24, 08:05 UTCMay 24, 10:55 UTC2h 50m
2026-05-23 GIA310 CGK → SUB May 23, 07:30 UTCMay 23, 07:55 UTC25m
2026-05-23 GIA322 CGK → SUB May 23, 02:00 UTCMay 23, 02:10 UTC10m
2026-05-23 GIA073 TKG → CGK May 23, 00:15 UTCMay 23, 00:40 UTC25m
2026-05-22 GIA175 PKU → CGK May 22, 03:45 UTCMay 22, 04:25 UTC40m
2026-05-22 GIA172 CGK → PKU May 22, 01:05 UTCMay 22, 02:05 UTC1h 0m
2026-05-21 GIA190 CGK → KNO May 21, 09:50 UTCMay 21, 14:20 UTC4h 30m
2026-05-20 GIA604 CGK → UPG May 20, 22:40 UTCMay 20, 23:05 UTC25m
2026-05-20 GIA572 CGK → BPN May 20, 08:05 UTCMay 20, 08:15 UTC10m
2026-05-20 GIA149 PDG → CGK May 20, 05:25 UTCMay 20, 05:55 UTC30m
2026-05-19 GIA422 CGK → DPS May 19, 06:55 UTCMay 20, 03:45 UTC20h 50m
2026-05-19 GIA611 UPG → CGK May 19, 05:15 UTCMay 19, 05:30 UTC15m
2026-05-18 GIA839 SIN → CGK May 18, 14:25 UTCMay 18, 14:40 UTC15m
2026-05-18 GIA838 CGK → SIN May 18, 10:50 UTCMay 18, 12:05 UTC1h 15m
2026-05-18 GIA327 SUB → CGK May 18, 05:45 UTCMay 18, 06:01 UTC15m
2026-05-16 GIA246 CGK → SRG May 16, 10:46 UTCMay 16, 11:16 UTC30m
2026-05-15 GIA326 CGK → SUB May 15, 10:45 UTCMay 16, 04:55 UTC18h 9m
2026-05-15 GIA430 CGK → LOP May 15, 04:10 UTCMay 15, 04:50 UTC40m
2026-05-13 GIA823 SIN → CGK May 13, 10:35 UTCMay 13, 10:55 UTC20m
2026-05-12 GIA822 CGK → SIN May 12, 09:55 UTCMay 12, 13:45 UTC3h 50m
2026-05-12 GIA866 CGK → BKK May 12, 03:35 UTCMay 12, 04:00 UTC25m
2026-05-11 GIA155 BTH → CGK May 11, 05:30 UTCMay 12, 03:45 UTC22h 15m
2026-05-10 GIA183 KNO → CGK May 10, 13:19 UTCMay 11, 03:55 UTC14h 35m
2026-05-10 GIA183 KNO → CGK May 10, 08:30 UTCMay 11, 03:55 UTC19h 25m
2026-05-09 GIA860 CGK → HKG May 9, 18:05 UTCMay 9, 18:35 UTC30m
2026-05-09 GIA6054 KDI → UPG May 9, 09:50 UTCMay 9, 10:20 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-GMP page for operator, model, and routing details .

Mode-S 8A023F frequently asked

What is Mode-S code 8A023F?
8A023F is an ICAO 24-bit transponder address. Allocated to Indonesia. Assigned to PK-GMP.
Where is Mode-S 8A023F registered?
Mode-S code 8A023F is allocated to Indonesia (ID). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 8A023F broadcasting right now?
No active broadcast right now. Last signal was 59m ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 8A023F, octal 42401077, decimal 9,044,543.
What flights does 8A023F operate?
Mode-S 8A023F has broadcast 20 distinct callsigns, including GIA838, GIA422, GIA183, GIA175, GIA867.