Apparatus

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sensors Mode-S transponder

8A0A43

ICAO 24-bit transponder address · allocated to Indonesia

Currently assigned to PK-GUF · BOEING 737-800

Hex
8A0A43
Octal
42405103
Decimal
9,046,595
Country
ID
Tail
PK-GUF
Type
B738
No current signal · last broadcast 23h ago
Flights observed
92
Distinct callsigns
20
Country
ID
Last broadcast
23h ago

Last known position

Most recent position reported by Mode-S 8A0A43.

Country allocation

The ICAO 24-bit address 8A0A43 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
GIA157 Garuda Indonesia 4 2026-05-15
GIA648 Garuda Indonesia 3 2026-05-23
GIA176 Garuda Indonesia 3 2026-05-04
GIA147 Garuda Indonesia 3 2026-04-19
GIA821 Garuda Indonesia 2 2026-05-28
GIA820 Garuda Indonesia 2 2026-05-28
GIA683 Garuda Indonesia 2 2026-04-19
GIA682 Garuda Indonesia 2 2026-04-18
GIA657 Garuda Indonesia 2 2026-04-26
GIA656 Garuda Indonesia 2 2026-04-27
GIA649 Garuda Indonesia 2 2026-05-06
GIA550 - 2 2026-05-20
GIA537 Garuda Indonesia 2 2026-05-19
GIA419 Garuda Indonesia 2 2026-05-22
GIA221 Garuda Indonesia 2 2026-05-27
GIA179 Garuda Indonesia 2 2026-05-04
GIA154 Garuda Indonesia 2 2026-05-15
GIA153 Garuda Indonesia 2 2026-05-11
GIA149 Garuda Indonesia 2 2026-05-04
GIA146 Garuda Indonesia 2 2026-04-16

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-29 GIA189 KNO → CGK May 29, 10:10 UTCMay 29, 10:20 UTC10m
2026-05-29 GIA186 CGK → KNO May 29, 05:20 UTCMay 29, 09:35 UTC4h 15m
2026-05-28 GIA821 KUL → CGK May 28, 05:15 UTCMay 28, 06:20 UTC1h 5m
2026-05-28 GIA820 CGK → KUL May 28, 02:15 UTCMay 28, 03:15 UTC1h 0m
2026-05-27 GIA221 SOC → CGK May 27, 09:40 UTCMay 27, 09:55 UTC15m
2026-05-27 GIA175 PKU → CGK May 27, 03:54 UTCMay 27, 05:19 UTC1h 25m
2026-05-26 GIA073 TKG → CGK May 26, 00:19 UTCMay 26, 00:49 UTC30m
2026-05-24 GIA165 PDG → CGK May 24, 10:45 UTCMay 24, 11:25 UTC40m
2026-05-24 GIA162 CGK → PDG May 24, 08:50 UTCMay 24, 09:20 UTC30m
2026-05-23 GIA648 CGK → TTE May 23, 18:30 UTCMay 23, 19:05 UTC35m
2026-05-22 GIA644 CGK → GTO May 22, 22:10 UTCMay 22, 22:20 UTC10m
2026-05-22 GIA419 DPS → CGK May 22, 10:45 UTCMay 22, 11:15 UTC30m
2026-05-22 GIA610 CGK → UPG May 22, 00:05 UTCMay 22, 00:15 UTC10m
2026-05-20 GIA550 - May 20, 08:15 UTCMay 20, 08:25 UTC10m
2026-05-20 GIA101 PLM → CGK May 20, 00:30 UTCMay 20, 00:40 UTC10m
2026-05-19 GIA112 CGK → PLM May 19, 11:50 UTCMay 19, 12:00 UTC10m
2026-05-19 GIA537 BDJ → CGK May 19, 10:15 UTCMay 19, 10:30 UTC15m
2026-05-19 GIA535 BDJ → CGK May 19, 03:45 UTCMay 19, 04:00 UTC15m
2026-05-18 GIA530 CGK → BDJ May 18, 23:40 UTCMay 18, 23:50 UTC10m
2026-05-18 GIA647 AMQ → CGK May 18, 10:05 UTCMay 18, 10:15 UTC10m
2026-05-17 GIA550 - May 17, 08:10 UTCMay 17, 08:20 UTC10m
2026-05-16 GIA221 SOC → CGK May 16, 09:25 UTCMay 16, 09:51 UTC25m
2026-05-15 GIA157 BTH → CGK May 15, 11:05 UTCMay 15, 12:15 UTC1h 10m
2026-05-15 GIA154 CGK → BTH May 15, 08:45 UTCMay 15, 09:10 UTC25m
2026-05-13 GIA408 CGK → DPS May 13, 04:50 UTCMay 13, 05:30 UTC40m
2026-05-12 GIA121 KNO → CGK May 12, 10:25 UTCMay 12, 11:25 UTC1h 0m
2026-05-12 GIA118 CGK → KNO May 12, 07:20 UTCMay 12, 08:20 UTC1h 0m
2026-05-12 GIA225 SOC → CGK May 12, 04:05 UTCMay 12, 04:55 UTC50m
2026-05-11 GIA153 BTH → CGK May 11, 03:20 UTCMay 11, 03:40 UTC20m
2026-05-11 GIA153 BTH → CGK May 11, 02:30 UTCMay 11, 02:45 UTC15m
2026-05-10 GIA150 CGK → BTH May 10, 23:35 UTCMay 11, 00:30 UTC55m
2026-05-10 GIA187 KNO → CGK May 10, 06:25 UTCMay 10, 08:15 UTC1h 50m
2026-05-10 GIA184 CGK → KNO May 10, 03:20 UTCMay 10, 04:19 UTC1h 0m
2026-05-09 GIA419 DPS → CGK May 9, 07:50 UTCMay 9, 11:15 UTC3h 25m
2026-05-09 GIA611 UPG → CGK May 9, 04:55 UTCMay 9, 05:25 UTC30m
2026-05-08 GIA157 BTH → CGK May 8, 11:09 UTCMay 8, 12:14 UTC1h 5m
2026-05-08 GIA154 CGK → BTH May 8, 08:55 UTCMay 8, 09:19 UTC25m
2026-05-08 GIA141 BTJ → CGK May 8, 00:54 UTCMay 8, 06:50 UTC5h 55m
2026-05-07 GIA193 KNO → CGK May 7, 10:25 UTCMay 7, 15:25 UTC5h 0m
2026-05-07 GIA137 PGK → CGK May 7, 06:40 UTCMay 7, 07:00 UTC20m
2026-05-07 GIA607 MDC → CGK May 7, 02:10 UTCMay 7, 02:25 UTC15m
2026-05-06 GIA137 PGK → CGK May 6, 06:20 UTCMay 6, 06:35 UTC15m
2026-05-06 GIA649 TTE → CGK May 6, 02:05 UTCMay 6, 02:20 UTC15m
2026-05-05 GIA648 CGK → TTE May 5, 18:30 UTCMay 5, 18:50 UTC20m
2026-05-05 GIA415 DPS → CGK May 5, 13:55 UTCMay 5, 14:30 UTC35m
2026-05-04 GIA179 PKU → CGK May 4, 11:50 UTCMay 4, 12:25 UTC35m
2026-05-04 GIA176 CGK → PKU May 4, 09:45 UTCMay 4, 10:15 UTC30m
2026-05-04 GIA176 CGK → PKU May 4, 09:05 UTCMay 4, 09:15 UTC10m
2026-05-04 GIA149 PDG → CGK May 4, 06:50 UTCMay 4, 07:10 UTC20m
2026-05-04 GIA149 PDG → CGK May 4, 03:54 UTCMay 4, 06:15 UTC2h 20m

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

Mode-S 8A0A43 frequently asked

What is Mode-S code 8A0A43?
8A0A43 is an ICAO 24-bit transponder address. Allocated to Indonesia. Assigned to PK-GUF.
Where is Mode-S 8A0A43 registered?
Mode-S code 8A0A43 is allocated to Indonesia (ID). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 8A0A43 broadcasting right now?
No active broadcast right now. Last signal was 23h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 8A0A43, octal 42405103, decimal 9,046,595.
What flights does 8A0A43 operate?
Mode-S 8A0A43 has broadcast 20 distinct callsigns, including GIA157, GIA648, GIA176, GIA147, GIA821.