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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 Jul 26, 12:00 UTC
Flights observed
198
Distinct callsigns
20
Country
ID
Last broadcast
Jul 26, 12:00 UTC

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
GIA866 Garuda Indonesia 10 2026-07-20
GIA867 Garuda Indonesia 9 2026-07-20
GIA829 Garuda Indonesia 7 2026-06-10
GIA837 - 6 2026-07-14
GIA828 Garuda Indonesia 5 2026-06-10
GIA179 Garuda Indonesia 4 2026-07-24
GIA175 Garuda Indonesia 4 2026-06-04
GIA149 - 4 2026-06-28
GIA141 Garuda Indonesia 4 2026-07-24
GIA839 - 3 2026-07-12
GIA838 - 3 2026-07-12
GIA836 - 3 2026-07-14
GIA821 - 3 2026-07-08
GIA820 - 3 2026-07-08
GIA623 - 3 2026-07-18
GIA622 Garuda Indonesia 3 2026-05-29
GIA604 Garuda Indonesia 3 2026-05-12
GIA433 - 3 2026-06-26
GIA432 Garuda Indonesia 3 2026-05-28
GIA242 - 3 2026-07-04

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 GIA237 SRG → CGK Jul 26, 11:30 UTCJul 26, 12:00 UTC30m
2026-07-26 GIA234 CGK → SRG Jul 26, 09:15 UTCJul 26, 09:35 UTC20m
2026-07-25 GIA204 CGK → YIA Jul 25, 01:10 UTCJul 25, 04:00 UTC2h 50m
2026-07-24 GIA179 PKU → CGK Jul 24, 11:10 UTCJul 24, 12:25 UTC1h 15m
2026-07-24 GIA176 CGK → PKU Jul 24, 08:40 UTCJul 24, 09:45 UTC1h 5m
2026-07-24 GIA141 BTJ → CGK Jul 24, 00:55 UTCJul 24, 06:10 UTC5h 15m
2026-07-23 GIA419 DPS → CGK Jul 23, 11:15 UTCJul 23, 11:30 UTC15m
2026-07-23 GIA127 DJB → CGK Jul 23, 04:45 UTCJul 23, 05:40 UTC55m
2026-07-23 GIA126 CGK → DJB Jul 23, 02:25 UTCJul 23, 03:20 UTC55m
2026-07-22 GIA204 CGK → YIA Jul 22, 01:15 UTCJul 22, 01:35 UTC20m
2026-07-21 GIA823 SIN → CGK Jul 21, 10:45 UTCJul 21, 10:55 UTC10m
2026-07-20 GIA822 CGK → SIN Jul 20, 13:20 UTCJul 20, 13:50 UTC30m
2026-07-20 GIA867 BKK → CGK Jul 20, 10:35 UTCJul 20, 10:45 UTC10m
2026-07-20 GIA867 BKK → CGK Jul 20, 09:05 UTCJul 20, 09:55 UTC50m
2026-07-20 GIA866 CGK → BKK Jul 20, 05:40 UTCJul 20, 06:00 UTC20m
2026-07-20 GIA866 CGK → BKK Jul 20, 03:30 UTCJul 20, 04:25 UTC55m
2026-07-19 GIA616 - Jul 19, 11:15 UTCJul 19, 11:40 UTC25m
2026-07-19 GIA657 DJJ → CGK Jul 19, 07:45 UTCJul 19, 07:55 UTC10m
2026-07-18 GIA656 CGK → DJJ Jul 18, 16:30 UTCJul 18, 16:50 UTC20m
2026-07-18 GIA254 - Jul 18, 03:10 UTCJul 18, 10:15 UTC7h 5m
2026-07-18 GIA623 - Jul 18, 01:45 UTCJul 18, 01:54 UTC10m
2026-07-16 GIA452 - Jul 16, 07:40 UTCJul 16, 08:00 UTC20m
2026-07-16 GIA611 - Jul 16, 05:55 UTCJul 16, 06:10 UTC15m
2026-07-15 GIA075 - Jul 15, 08:50 UTCJul 15, 09:00 UTC10m
2026-07-15 GIA074 - Jul 15, 07:05 UTCJul 15, 07:15 UTC10m
2026-07-14 GIA837 - Jul 14, 13:15 UTCJul 14, 13:30 UTC15m
2026-07-14 GIA837 - Jul 14, 12:10 UTCJul 14, 12:40 UTC30m
2026-07-14 GIA836 - Jul 14, 09:25 UTCJul 14, 09:55 UTC30m
2026-07-14 GIA863 - Jul 14, 02:05 UTCJul 14, 02:15 UTC10m
2026-07-13 GIA860 - Jul 13, 18:05 UTCJul 13, 18:45 UTC40m
2026-07-13 GIA899 - Jul 13, 12:30 UTCJul 13, 12:40 UTC10m
2026-07-13 GIA898 - Jul 13, 06:05 UTCJul 13, 06:15 UTC10m
2026-07-13 GIA898 - Jul 13, 01:35 UTCJul 13, 03:01 UTC1h 25m
2026-07-12 GIA839 - Jul 12, 15:10 UTCJul 12, 15:25 UTC15m
2026-07-12 GIA839 - Jul 12, 14:10 UTCJul 12, 14:35 UTC25m
2026-07-12 GIA838 - Jul 12, 08:25 UTCJul 12, 12:15 UTC3h 50m
2026-07-12 GIA832 - Jul 12, 05:10 UTCJul 12, 06:30 UTC1h 20m
2026-07-12 GIA825 - Jul 12, 02:15 UTCJul 12, 02:25 UTC10m
2026-07-11 GIA824 - Jul 11, 09:30 UTCJul 12, 00:10 UTC14h 40m
2026-07-11 GIA866 - Jul 11, 05:45 UTCJul 11, 06:10 UTC25m
2026-07-11 GIA866 - Jul 11, 03:01 UTCJul 11, 04:30 UTC1h 30m
2026-07-09 GIA141 - Jul 9, 14:25 UTCJul 10, 06:10 UTC15h 45m
2026-07-09 GIA838 - Jul 9, 11:10 UTCJul 9, 12:20 UTC1h 10m
2026-07-09 GIA833 - Jul 9, 08:25 UTCJul 9, 08:35 UTC10m
2026-07-09 GIA832 - Jul 9, 05:10 UTCJul 9, 06:25 UTC1h 15m
2026-07-08 GIA837 SIN → CGK Jul 8, 12:15 UTCJul 8, 12:30 UTC15m
2026-07-08 GIA821 - Jul 8, 05:30 UTCJul 8, 10:20 UTC4h 50m
2026-07-08 GIA820 - Jul 8, 02:25 UTCJul 8, 03:25 UTC1h 0m
2026-07-05 GIA414 - Jul 5, 09:25 UTCJul 5, 09:50 UTC25m
2026-07-04 GIA242 - Jul 4, 06:55 UTCJul 4, 07:20 UTC25m

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 Jul 26, 12:00 UTC.
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 GIA866, GIA867, GIA829, GIA837, GIA828.