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 15h ago
Flights observed
273
Distinct callsigns
20
Country
ID
Last broadcast
15h ago

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
CTV917 - 7 2026-06-28
CTV493 - 7 2026-07-10
CTV972 - 5 2026-05-04
CTV915 Escuela De Pilotos Are Aviacion 5 2026-07-03
CTV437 - 5 2026-07-10
CTV984 - 4 2026-07-03
CTV975 Escuela De Pilotos Are Aviacion 4 2026-05-28
CTV974 Escuela De Pilotos Are Aviacion 4 2026-05-28
CTV973 - 4 2026-05-04
CTV936 Escuela De Pilotos Are Aviacion 4 2026-06-14
CTV913 - 4 2026-07-11
CTV436 - 4 2026-06-30
CTV9995 Escuela De Pilotos Are Aviacion 3 2026-06-28
CTV9994 Escuela De Pilotos Are Aviacion 3 2026-06-28
CTV985 - 3 2026-07-03
CTV954 - 3 2026-06-22
CTV953 - 3 2026-06-29
CTV945 Escuela De Pilotos Are Aviacion 3 2026-07-08
CTV942 - 3 2026-07-09
CTV918 - 3 2026-06-28

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 CTV446 - Jul 14, 07:10 UTCJul 14, 07:20 UTC10m
2026-07-13 CTV439 - Jul 13, 23:45 UTCJul 13, 23:55 UTC10m
2026-07-13 CTV447 - Jul 13, 05:31 UTCJul 13, 05:45 UTC15m
2026-07-12 CTV439 - Jul 12, 23:40 UTCJul 12, 23:55 UTC15m
2026-07-12 CTV447 - Jul 12, 05:50 UTCJul 12, 06:01 UTC10m
2026-07-11 CTV439 - Jul 11, 23:45 UTCJul 11, 23:55 UTC10m
2026-07-11 CTV913 - Jul 11, 05:55 UTCJul 11, 06:10 UTC15m
2026-07-11 CTV913 - Jul 11, 04:20 UTCJul 11, 05:25 UTC1h 5m
2026-07-11 CTV912 - Jul 11, 01:15 UTCJul 11, 02:40 UTC1h 25m
2026-07-10 CTV987 - Jul 10, 23:45 UTCJul 11, 00:00 UTC15m
2026-07-10 CTV493 - Jul 10, 11:45 UTCJul 10, 12:00 UTC15m
2026-07-10 CTV437 - Jul 10, 06:50 UTCJul 10, 07:00 UTC10m
2026-07-09 CTV527 - Jul 9, 14:15 UTCJul 9, 14:30 UTC15m
2026-07-09 CTV527 - Jul 9, 13:10 UTCJul 9, 13:40 UTC30m
2026-07-09 CTV526 - Jul 9, 11:00 UTCJul 9, 11:10 UTC10m
2026-07-09 CTV526 - Jul 9, 10:15 UTCJul 9, 10:25 UTC10m
2026-07-09 CTV943 - Jul 9, 06:30 UTCJul 9, 07:10 UTC40m
2026-07-09 CTV942 - Jul 9, 04:10 UTCJul 9, 05:05 UTC55m
2026-07-09 CTV961 - Jul 9, 02:10 UTCJul 9, 03:05 UTC55m
2026-07-09 CTV960 - Jul 9, 00:10 UTCJul 9, 00:40 UTC30m
2026-07-08 CTV945 BTH → CGK Jul 8, 14:15 UTCJul 8, 14:30 UTC15m
2026-07-08 CTV945 BTH → CGK Jul 8, 11:35 UTCJul 8, 13:35 UTC2h 0m
2026-07-08 CTV944 - Jul 8, 10:50 UTCJul 8, 11:00 UTC10m
2026-07-08 CTV213 - Jul 8, 09:35 UTCJul 8, 09:45 UTC10m
2026-07-07 CTV783 - Jul 7, 13:35 UTCJul 7, 13:50 UTC15m
2026-07-07 CTV784 - Jul 7, 08:10 UTCJul 7, 08:20 UTC10m
2026-07-07 CTV787 - Jul 7, 04:35 UTCJul 7, 05:55 UTC1h 20m
2026-07-07 CTV786 - Jul 7, 02:10 UTCJul 7, 03:15 UTC1h 5m
2026-07-07 CTV780 - Jul 7, 00:15 UTCJul 7, 00:25 UTC10m
2026-07-06 CTV765 - Jul 6, 11:20 UTCJul 6, 12:10 UTC50m
2026-07-06 CTV764 - Jul 6, 09:35 UTCJul 6, 10:00 UTC25m
2026-07-06 CTV453 - Jul 6, 08:20 UTCJul 6, 08:30 UTC10m
2026-07-06 CTV883 - Jul 6, 01:45 UTCJul 6, 03:35 UTC1h 50m
2026-07-03 CTV915 KNO → CGK Jul 3, 16:50 UTCJul 3, 17:00 UTC10m
2026-07-03 CTV914 - Jul 3, 12:10 UTCJul 3, 16:15 UTC4h 5m
2026-07-03 CTV779 - Jul 3, 09:20 UTCJul 3, 10:05 UTC45m
2026-07-03 CTV778 - Jul 3, 07:30 UTCJul 3, 07:55 UTC25m
2026-07-03 CTV985 - Jul 3, 05:35 UTCJul 3, 05:50 UTC15m
2026-07-03 CTV984 - Jul 3, 03:10 UTCJul 3, 03:20 UTC10m
2026-07-03 CTV175 - Jul 3, 01:40 UTCJul 3, 01:50 UTC10m
2026-07-02 CTV170 CGK → SUB Jul 2, 22:10 UTCJul 2, 22:50 UTC40m
2026-07-02 CTV340 - Jul 2, 07:15 UTCJul 2, 07:35 UTC20m
2026-07-02 CTV985 - Jul 2, 05:45 UTCJul 2, 05:55 UTC10m
2026-07-02 CTV984 - Jul 2, 03:20 UTCJul 2, 03:40 UTC20m
2026-07-01 CTV493 - Jul 1, 11:55 UTCJul 1, 12:10 UTC15m
2026-07-01 CTV482 - Jul 1, 08:20 UTCJul 1, 08:30 UTC10m
2026-06-30 CTV436 - Jun 30, 22:20 UTCJun 30, 22:30 UTC10m
2026-06-30 CTV689 - Jun 30, 13:20 UTCJun 30, 13:30 UTC10m
2026-06-30 CTV687 - Jun 30, 07:25 UTCJun 30, 07:35 UTC10m
2026-06-30 CTV686 - Jun 30, 03:10 UTCJun 30, 03:50 UTC40m

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 15h ago.
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 CTV917, CTV493, CTV972, CTV915, CTV437.