Apparatus

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sensors Mode-S transponder

8A04A4

ICAO 24-bit transponder address · allocated to Indonesia

Currently assigned to PK-GLZ · AIRBUS A-320

Hex
8A04A4
Octal
42402244
Decimal
9,045,156
Country
ID
Tail
PK-GLZ
Type
A320
No current signal · last broadcast 1h ago
Flights observed
366
Distinct callsigns
20
Country
ID
Last broadcast
1h ago

Last known position

Most recent position reported by Mode-S 8A04A4.

Country allocation

The ICAO 24-bit address 8A04A4 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
CTV913 - 10 2026-06-30
CTV975 - 9 2026-06-29
CTV969 - 9 2026-07-17
CTV974 - 7 2026-06-29
CTV968 - 7 2026-07-17
CTV912 - 7 2026-06-30
CTV986 - 6 2026-06-29
CTV728 Escuela De Pilotos Are Aviacion 6 2026-07-20
CTV726 - 6 2026-07-17
CTV172 Escuela De Pilotos Are Aviacion 6 2026-07-23
CTV987 - 5 2026-06-29
CTV978 - 5 2026-07-15
CTV967 Escuela De Pilotos Are Aviacion 5 2026-06-08
CTV943 - 5 2026-06-16
CTV933 - 5 2026-06-14
CTV885 - 5 2026-07-08
CTV346 - 5 2026-07-20
CTV173 - 5 2026-07-23
CTV980 - 4 2026-07-16
CTV979 - 4 2026-07-15

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-25 CTV983 PLM → CGK Jul 25, 13:50 UTCJul 25, 14:00 UTC10m
2026-07-25 CTV982 CGK → PLM Jul 25, 10:30 UTCJul 25, 10:55 UTC25m
2026-07-25 CTV919 KNO → CGK Jul 25, 07:40 UTCJul 25, 09:30 UTC1h 50m
2026-07-25 CTV916 CGK → KNO Jul 25, 04:30 UTCJul 25, 06:10 UTC1h 40m
2026-07-25 CTV953 PDG → CGK Jul 25, 01:45 UTCJul 25, 02:25 UTC40m
2026-07-24 CTV952 CGK → PDG Jul 24, 23:20 UTCJul 25, 00:20 UTC1h 0m
2026-07-24 CTV171 SUB → CGK Jul 24, 14:10 UTCJul 24, 14:40 UTC30m
2026-07-23 CTV172 HLP → SUB Jul 23, 13:30 UTCJul 23, 14:10 UTC40m
2026-07-23 CTV173 - Jul 23, 11:55 UTCJul 23, 12:05 UTC10m
2026-07-21 CTV172 HLP → SUB Jul 21, 13:40 UTCJul 21, 14:10 UTC30m
2026-07-21 CTV173 - Jul 21, 11:55 UTCJul 21, 12:25 UTC30m
2026-07-20 CTV728 CGK → SUB Jul 20, 14:20 UTCJul 20, 15:05 UTC45m
2026-07-20 CTV999 - Jul 20, 13:05 UTCJul 20, 13:35 UTC30m
2026-07-20 CTV998 - Jul 20, 11:45 UTCJul 20, 12:05 UTC20m
2026-07-20 CTV347 - Jul 20, 10:20 UTCJul 20, 10:30 UTC10m
2026-07-20 CTV346 - Jul 20, 01:05 UTCJul 20, 01:40 UTC35m
2026-07-19 CTV725 - Jul 19, 23:25 UTCJul 19, 23:40 UTC15m
2026-07-19 CTV172 HLP → SUB Jul 19, 13:35 UTCJul 19, 14:05 UTC30m
2026-07-19 CTV173 - Jul 19, 12:15 UTCJul 19, 12:40 UTC25m
2026-07-18 CTV728 CGK → SUB Jul 18, 14:35 UTCJul 18, 15:15 UTC40m
2026-07-18 CTV999 - Jul 18, 13:15 UTCJul 18, 13:45 UTC30m
2026-07-18 CTV998 - Jul 18, 11:55 UTCJul 18, 12:15 UTC20m
2026-07-18 CTV347 - Jul 18, 01:15 UTCJul 18, 10:15 UTC9h 1m
2026-07-17 CTV725 - Jul 17, 23:20 UTCJul 17, 23:50 UTC30m
2026-07-17 CTV726 - Jul 17, 12:04 UTCJul 17, 12:45 UTC40m
2026-07-17 CTV969 - Jul 17, 10:00 UTCJul 17, 11:00 UTC1h 0m
2026-07-17 CTV968 - Jul 17, 07:30 UTCJul 17, 08:25 UTC55m
2026-07-17 CTV753 - Jul 17, 05:45 UTCJul 17, 06:00 UTC15m
2026-07-17 CTV752 - Jul 17, 02:39 UTCJul 17, 03:20 UTC40m
2026-07-17 CTV981 - Jul 17, 01:15 UTCJul 17, 01:29 UTC15m
2026-07-16 CTV980 - Jul 16, 23:05 UTCJul 16, 23:20 UTC15m
2026-07-16 CTV917 - Jul 16, 11:20 UTCJul 16, 11:34 UTC15m
2026-07-16 CTV917 - Jul 16, 09:45 UTCJul 16, 10:29 UTC45m
2026-07-16 CTV918 - Jul 16, 06:05 UTCJul 16, 07:35 UTC1h 30m
2026-07-16 CTV723 - Jul 16, 04:30 UTCJul 16, 04:45 UTC15m
2026-07-16 CTV722 - Jul 16, 01:50 UTCJul 16, 02:30 UTC40m
2026-07-16 CTV345 - Jul 16, 00:25 UTCJul 16, 00:40 UTC15m
2026-07-15 CTV344 - Jul 15, 19:10 UTCJul 15, 19:35 UTC25m
2026-07-15 CTV979 - Jul 15, 12:25 UTCJul 15, 12:40 UTC15m
2026-07-15 CTV979 - Jul 15, 10:50 UTCJul 15, 11:55 UTC1h 5m
2026-07-15 CTV978 - Jul 15, 08:35 UTCJul 15, 09:10 UTC35m
2026-07-15 CTV978 - Jul 15, 07:40 UTCJul 15, 07:55 UTC15m
2026-07-15 CTV991 - Jul 15, 03:50 UTCJul 15, 06:40 UTC2h 50m
2026-07-15 CTV939 - Jul 15, 02:25 UTCJul 15, 02:40 UTC15m
2026-07-15 CTV939 - Jul 15, 01:20 UTCJul 15, 01:30 UTC10m
2026-07-14 CTV936 - Jul 14, 23:00 UTCJul 14, 23:10 UTC10m
2026-07-14 CTV914 - Jul 14, 12:00 UTCJul 14, 16:55 UTC4h 55m
2026-07-14 CTV347 - Jul 14, 10:10 UTCJul 14, 10:25 UTC15m
2026-07-14 CTV346 - Jul 14, 01:05 UTCJul 14, 01:30 UTC25m
2026-07-13 CTV725 - Jul 13, 23:30 UTCJul 13, 23:45 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-GLZ page for operator, model, and routing details .

Mode-S 8A04A4 frequently asked

What is Mode-S code 8A04A4?
8A04A4 is an ICAO 24-bit transponder address. Allocated to Indonesia. Assigned to PK-GLZ.
Where is Mode-S 8A04A4 registered?
Mode-S code 8A04A4 is allocated to Indonesia (ID). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 8A04A4 broadcasting right now?
No active broadcast right now. Last signal was 1h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 8A04A4, octal 42402244, decimal 9,045,156.
What flights does 8A04A4 operate?
Mode-S 8A04A4 has broadcast 20 distinct callsigns, including CTV913, CTV975, CTV969, CTV974, CTV968.