Apparatus

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sensors Mode-S transponder

8A04A6

ICAO 24-bit transponder address · allocated to Indonesia

Currently assigned to PK-GQC · AIRBUS A-320

Hex
8A04A6
Octal
42402246
Decimal
9,045,158
Country
ID
Tail
PK-GQC
Type
A320
No current signal · last broadcast Jul 26, 11:50 UTC
Flights observed
337
Distinct callsigns
20
Country
ID
Last broadcast
Jul 26, 11:50 UTC

Last known position

Most recent position reported by Mode-S 8A04A6.

Country allocation

The ICAO 24-bit address 8A04A6 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
CTV974 Escuela De Pilotos Are Aviacion 7 2026-07-21
CTV917 - 7 2026-06-28
CTV493 - 7 2026-07-10
CTV936 Escuela De Pilotos Are Aviacion 6 2026-07-24
CTV975 Escuela De Pilotos Are Aviacion 5 2026-07-21
CTV972 - 5 2026-05-04
CTV953 - 5 2026-07-16
CTV915 Escuela De Pilotos Are Aviacion 5 2026-07-03
CTV526 - 5 2026-07-16
CTV437 - 5 2026-07-10
CTV984 - 4 2026-07-03
CTV979 - 4 2026-07-22
CTV977 Escuela De Pilotos Are Aviacion 4 2026-07-26
CTV973 - 4 2026-05-04
CTV938 Escuela De Pilotos Are Aviacion 4 2026-07-21
CTV937 - 4 2026-07-21
CTV913 - 4 2026-07-11
CTV792 Escuela De Pilotos Are Aviacion 4 2026-07-25
CTV646 - 4 2026-07-15
CTV641 Escuela De Pilotos Are Aviacion 4 2026-07-20

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 CTV341 UPG → CGK Jul 26, 11:35 UTCJul 26, 11:50 UTC15m
2026-07-26 CTV340 CGK → UPG Jul 26, 07:00 UTCJul 26, 07:25 UTC25m
2026-07-26 CTV977 TJQ → CGK Jul 26, 05:20 UTCJul 26, 05:40 UTC20m
2026-07-26 CTV976 CGK → TJQ Jul 26, 03:10 UTCJul 26, 03:20 UTC10m
2026-07-26 CTV775 YIA → CGK Jul 26, 01:15 UTCJul 26, 01:50 UTC35m
2026-07-25 CTV776 CGK → YIA Jul 25, 11:45 UTCJul 25, 12:05 UTC20m
2026-07-25 CTV793 SRG → CGK Jul 25, 09:55 UTCJul 25, 10:30 UTC35m
2026-07-25 CTV792 CGK → SRG Jul 25, 08:05 UTCJul 25, 08:30 UTC25m
2026-07-25 CTV991 BKS → CGK Jul 25, 03:35 UTCJul 25, 06:35 UTC3h 0m
2026-07-25 CTV939 PKU → CGK Jul 25, 01:10 UTCJul 25, 01:30 UTC20m
2026-07-24 CTV936 CGK → PKU Jul 24, 23:35 UTCJul 24, 23:55 UTC20m
2026-07-24 CTV936 CGK → PKU Jul 24, 22:50 UTCJul 24, 23:00 UTC10m
2026-07-24 CTV983 PLM → CGK Jul 24, 13:45 UTCJul 24, 13:55 UTC10m
2026-07-24 CTV982 CGK → PLM Jul 24, 10:25 UTCJul 24, 10:40 UTC15m
2026-07-24 CTV919 KNO → CGK Jul 24, 07:40 UTCJul 24, 09:30 UTC1h 50m
2026-07-24 CTV916 CGK → KNO Jul 24, 04:35 UTCJul 24, 06:10 UTC1h 35m
2026-07-23 CTV776 CGK → YIA Jul 23, 11:50 UTCJul 24, 01:45 UTC13h 55m
2026-07-23 CTV792 CGK → SRG Jul 23, 08:15 UTCJul 23, 08:40 UTC25m
2026-07-23 CTV717 SUB → CGK Jul 23, 06:45 UTCJul 23, 07:00 UTC15m
2026-07-23 CTV716 CGK → SUB Jul 23, 03:40 UTCJul 23, 04:20 UTC40m
2026-07-23 CTV941 BTH → CGK Jul 23, 01:55 UTCJul 23, 02:05 UTC10m
2026-07-23 CTV941 BTH → CGK Jul 23, 00:50 UTCJul 23, 01:20 UTC30m
2026-07-22 CTV940 CGK → BTH Jul 22, 22:35 UTCJul 22, 23:35 UTC1h 0m
2026-07-22 CTV979 - Jul 22, 12:30 UTCJul 22, 12:45 UTC15m
2026-07-22 CTV640 CGK → LOP Jul 22, 02:15 UTCJul 22, 11:50 UTC9h 35m
2026-07-21 CTV937 - Jul 21, 23:35 UTCJul 22, 00:55 UTC1h 20m
2026-07-21 CTV938 CGK → PKU Jul 21, 11:25 UTCJul 21, 12:35 UTC1h 10m
2026-07-21 CTV975 TNJ → CGK Jul 21, 10:15 UTCJul 21, 10:25 UTC10m
2026-07-21 CTV974 CGK → TNJ Jul 21, 07:35 UTCJul 21, 09:30 UTC1h 55m
2026-07-21 CTV974 CGK → TNJ Jul 21, 06:50 UTCJul 21, 07:00 UTC10m
2026-07-21 CTV251 UPG → CGK Jul 21, 05:05 UTCJul 21, 05:15 UTC10m
2026-07-20 CTV250 CGK → UPG Jul 20, 14:35 UTCJul 20, 14:55 UTC20m
2026-07-20 CTV979 - Jul 20, 10:45 UTCJul 20, 12:35 UTC1h 50m
2026-07-20 CTV978 CGK → KNO Jul 20, 07:30 UTCJul 20, 09:05 UTC1h 35m
2026-07-20 CTV641 LOP → CGK Jul 20, 06:10 UTCJul 20, 06:25 UTC15m
2026-07-19 CTV937 - Jul 19, 23:35 UTCJul 20, 00:55 UTC1h 20m
2026-07-19 CTV938 CGK → PKU Jul 19, 11:40 UTCJul 19, 12:50 UTC1h 10m
2026-07-19 CTV974 CGK → TNJ Jul 19, 07:40 UTCJul 19, 09:40 UTC2h 0m
2026-07-19 CTV977 - Jul 19, 05:20 UTCJul 19, 05:40 UTC20m
2026-07-19 CTV775 - Jul 19, 01:10 UTCJul 19, 01:45 UTC35m
2026-07-18 CTV776 - Jul 18, 11:45 UTCJul 18, 12:10 UTC25m
2026-07-18 CTV793 - Jul 18, 10:00 UTCJul 18, 10:30 UTC30m
2026-07-18 CTV792 CGK → SRG Jul 18, 08:10 UTCJul 18, 08:35 UTC25m
2026-07-18 CTV716 - Jul 18, 03:40 UTCJul 18, 07:00 UTC3h 20m
2026-07-18 CTV941 - Jul 18, 00:50 UTCJul 18, 02:05 UTC1h 15m
2026-07-17 CTV940 - Jul 17, 22:15 UTCJul 17, 23:20 UTC1h 5m
2026-07-17 CTV513 - Jul 17, 13:29 UTCJul 17, 13:40 UTC10m
2026-07-17 CTV513 - Jul 17, 12:04 UTCJul 17, 12:50 UTC45m
2026-07-17 CTV513 - Jul 17, 10:35 UTCJul 17, 10:44 UTC10m
2026-07-17 CTV512 - Jul 17, 05:50 UTCJul 17, 09:04 UTC3h 15m

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

Mode-S 8A04A6 frequently asked

What is Mode-S code 8A04A6?
8A04A6 is an ICAO 24-bit transponder address. Allocated to Indonesia. Assigned to PK-GQC.
Where is Mode-S 8A04A6 registered?
Mode-S code 8A04A6 is allocated to Indonesia (ID). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 8A04A6 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 11:50 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 8A04A6, octal 42402246, decimal 9,045,158.
What flights does 8A04A6 operate?
Mode-S 8A04A6 has broadcast 20 distinct callsigns, including CTV974, CTV917, CTV493, CTV936, CTV975.