Apparatus

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sensors Mode-S transponder

8A0243

ICAO 24-bit transponder address · allocated to Indonesia

Currently assigned to PK-GFI · BOEING 737-800

Hex
8A0243
Octal
42401103
Decimal
9,044,547
Country
ID
Tail
PK-GFI
Type
B738
No current signal · last broadcast 20h ago
Flights observed
87
Distinct callsigns
20
Country
ID
Last broadcast
20h ago

Last known position

Most recent position reported by Mode-S 8A0243.

Country allocation

The ICAO 24-bit address 8A0243 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
GIA829 Garuda Indonesia 6 2026-05-29
GIA828 Garuda Indonesia 4 2026-05-29
GIA837 Garuda Indonesia 3 2026-05-29
GIA622 Garuda Indonesia 3 2026-05-29
GIA604 Garuda Indonesia 3 2026-05-12
GIA432 Garuda Indonesia 3 2026-05-28
GIA179 Garuda Indonesia 3 2026-05-01
GIA175 Garuda Indonesia 3 2026-05-17
GIA836 Garuda Indonesia 2 2026-05-29
GIA647 Garuda Indonesia 2 2026-05-08
GIA644 Garuda Indonesia 2 2026-05-18
GIA433 Garuda Indonesia 2 2026-05-21
GIA242 Garuda Indonesia 2 2026-05-19
GIA172 Garuda Indonesia 2 2026-05-17
GIA149 Garuda Indonesia 2 2026-05-22
GIA141 Garuda Indonesia 2 2026-04-23
GIA137 Garuda Indonesia 2 2026-04-26
GIA127 Garuda Indonesia 2 2026-05-20
GIA126 Garuda Indonesia 2 2026-05-20
GIA121 Garuda Indonesia 2 2026-05-20

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-06-02 GIA821 KUL → CGK Jun 2, 05:10 UTCJun 2, 06:10 UTC1h 0m
2026-06-02 GIA820 CGK → KUL Jun 2, 01:50 UTCJun 2, 03:25 UTC1h 35m
2026-05-31 - - May 31, 22:00 UTCMay 31, 22:10 UTC10m
2026-05-31 GIA839 SIN → CGK May 31, 14:20 UTCMay 31, 14:35 UTC15m
2026-05-31 GIA838 CGK → SIN May 31, 11:30 UTCMay 31, 12:00 UTC30m
2026-05-30 GIA238 CGK → SRG May 30, 03:55 UTCMay 30, 04:25 UTC30m
2026-05-29 GIA622 CGK → PLW May 29, 19:35 UTCMay 29, 19:55 UTC20m
2026-05-29 GIA837 SIN → CGK May 29, 12:20 UTCMay 29, 12:35 UTC15m
2026-05-29 GIA836 CGK → SIN May 29, 08:40 UTCMay 29, 09:55 UTC1h 15m
2026-05-29 GIA829 SIN → CGK May 29, 05:15 UTCMay 29, 05:25 UTC10m
2026-05-29 GIA828 CGK → SIN May 29, 02:20 UTCMay 29, 02:50 UTC30m
2026-05-28 GIA432 CGK → LOP May 28, 00:50 UTCMay 28, 01:00 UTC10m
2026-05-26 GIA646 CGK → AMQ May 26, 03:09 UTCMay 26, 03:35 UTC25m
2026-05-24 GIA432 CGK → LOP May 24, 00:35 UTCMay 24, 01:00 UTC25m
2026-05-23 GIA837 SIN → CGK May 23, 13:05 UTCMay 23, 13:15 UTC10m
2026-05-23 GIA837 SIN → CGK May 23, 12:00 UTCMay 23, 12:25 UTC25m
2026-05-23 GIA836 CGK → SIN May 23, 09:20 UTCMay 23, 09:45 UTC25m
2026-05-23 GIA829 SIN → CGK May 23, 06:15 UTCMay 23, 06:25 UTC10m
2026-05-23 GIA829 SIN → CGK May 23, 05:00 UTCMay 23, 05:30 UTC30m
2026-05-23 GIA828 CGK → SIN May 23, 01:35 UTCMay 23, 02:45 UTC1h 9m
2026-05-22 GIA572 CGK → BPN May 22, 08:15 UTCMay 22, 08:25 UTC10m
2026-05-22 GIA149 PDG → CGK May 22, 03:45 UTCMay 22, 05:55 UTC2h 10m
2026-05-21 GIA433 LOP → CGK May 21, 08:25 UTCMay 21, 08:35 UTC10m
2026-05-21 GIA430 CGK → LOP May 21, 04:15 UTCMay 21, 04:35 UTC20m
2026-05-20 GIA121 KNO → CGK May 20, 07:25 UTCMay 20, 11:30 UTC4h 5m
2026-05-20 GIA127 DJB → CGK May 20, 04:25 UTCMay 20, 04:35 UTC10m
2026-05-20 GIA126 CGK → DJB May 20, 03:05 UTCMay 20, 03:20 UTC15m
2026-05-20 GIA073 TKG → CGK May 20, 00:50 UTCMay 20, 01:00 UTC10m
2026-05-19 GIA242 CGK → SRG May 19, 06:45 UTCMay 19, 07:05 UTC20m
2026-05-19 GIA645 GTO → CGK May 19, 04:25 UTCMay 19, 04:35 UTC10m
2026-05-18 GIA644 CGK → GTO May 18, 22:05 UTCMay 18, 22:15 UTC10m
2026-05-18 GIA829 SIN → CGK May 18, 07:25 UTCMay 18, 07:35 UTC10m
2026-05-18 GIA828 CGK → SIN May 18, 04:05 UTCMay 18, 04:45 UTC40m
2026-05-18 GIA533 BDJ → CGK May 18, 00:25 UTCMay 18, 00:50 UTC25m
2026-05-17 GIA175 PKU → CGK May 17, 03:50 UTCMay 17, 04:30 UTC40m
2026-05-17 GIA172 CGK → PKU May 17, 01:40 UTCMay 17, 02:15 UTC35m
2026-05-15 GIA221 SOC → CGK May 15, 09:50 UTCMay 15, 10:00 UTC10m
2026-05-15 GIA228 CGK → SOC May 15, 07:05 UTCMay 15, 07:35 UTC30m
2026-05-14 GIA606 CGK → MDC May 14, 19:10 UTCMay 14, 19:20 UTC10m
2026-05-13 GIA622 CGK → PLW May 13, 19:35 UTCMay 13, 19:45 UTC10m
2026-05-13 GIA202 CGK → YIA May 13, 09:30 UTCMay 13, 09:45 UTC15m
2026-05-13 GIA605 UPG → CGK May 13, 07:50 UTCMay 13, 08:00 UTC10m
2026-05-12 GIA604 CGK → UPG May 12, 22:45 UTCMay 12, 22:55 UTC10m
2026-05-12 GIA421 DPS → CGK May 12, 13:20 UTCMay 12, 13:30 UTC10m
2026-05-11 GIA127 DJB → CGK May 11, 04:30 UTCMay 11, 04:40 UTC10m
2026-05-11 GIA126 CGK → DJB May 11, 02:20 UTCMay 11, 03:10 UTC50m
2026-05-10 GIA231 SRG → CGK May 10, 00:55 UTCMay 10, 01:04 UTC10m
2026-05-09 GIA246 CGK → SRG May 9, 10:45 UTCMay 9, 11:10 UTC25m
2026-05-08 GIA604 CGK → UPG May 8, 22:45 UTCMay 8, 23:10 UTC25m
2026-05-08 GIA647 AMQ → CGK May 8, 10:25 UTCMay 8, 10:39 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-GFI page for operator, model, and routing details .

Mode-S 8A0243 frequently asked

What is Mode-S code 8A0243?
8A0243 is an ICAO 24-bit transponder address. Allocated to Indonesia. Assigned to PK-GFI.
Where is Mode-S 8A0243 registered?
Mode-S code 8A0243 is allocated to Indonesia (ID). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 8A0243 broadcasting right now?
No active broadcast right now. Last signal was 20h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 8A0243, octal 42401103, decimal 9,044,547.
What flights does 8A0243 operate?
Mode-S 8A0243 has broadcast 20 distinct callsigns, including GIA829, GIA828, GIA837, GIA622, GIA604.