sensors Mode-S transponder

8A05C4

ICAO 24-bit transponder address · allocated to Indonesia

Currently assigned to PK-GQM · AIRBUS A-320

Hex
8A05C4
Octal
42402704
Decimal
9,045,444
Country
ID
Tail
PK-GQM
Type
A320
No current signal · last broadcast 13h ago
Flights observed
177
Distinct callsigns
20
Country
ID
Last broadcast
13h ago

Last known position

Most recent position reported by Mode-S 8A05C4.

Country allocation

The ICAO 24-bit address 8A05C4 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

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-30 CTV480 CGK → BDJ May 30, 00:15 UTCMay 30, 00:25 UTC10m
2026-05-29 CTV779 YIA → CGK May 29, 07:15 UTCMay 29, 10:05 UTC2h 50m
2026-05-27 CTV681 DPS → CGK May 27, 08:15 UTCMay 27, 08:30 UTC15m
2026-05-26 CTV680 CGK → DPS May 26, 22:05 UTCMay 26, 22:50 UTC45m
2026-05-26 CTV662 CGK → DPS May 26, 10:44 UTCMay 26, 11:34 UTC50m
2026-05-26 CTV736 CGK → SUB May 26, 05:15 UTCMay 26, 05:59 UTC45m
2026-05-26 CTV883 KNO → CGK May 26, 02:19 UTCMay 26, 04:04 UTC1h 45m
2026-05-25 CTV910 CGK → KNO May 25, 23:00 UTCMay 26, 00:35 UTC1h 35m
2026-05-24 CTV340 CGK → UPG May 24, 06:50 UTCMay 24, 11:55 UTC5h 5m
2026-05-23 CTV943 BTH → CGK May 23, 08:05 UTCMay 23, 09:15 UTC1h 10m
2026-05-23 CTV942 CGK → BTH May 23, 05:45 UTCMay 23, 06:45 UTC1h 0m
2026-05-22 CTV885 DTB → CGK May 22, 23:55 UTCMay 23, 04:45 UTC4h 49m
2026-05-22 CTV945 BTH → CGK May 22, 12:15 UTCMay 22, 12:40 UTC25m
2026-05-22 CTV944 CGK → BTH May 22, 09:45 UTCMay 22, 10:50 UTC1h 5m
2026-05-21 CTV680 CGK → DPS May 21, 22:10 UTCMay 21, 22:30 UTC20m
2026-05-21 CTV947 BTH → CGK May 21, 14:55 UTCMay 21, 16:05 UTC1h 10m
2026-05-21 CTV946 CGK → BTH May 21, 12:35 UTCMay 21, 13:35 UTC1h 0m
2026-05-21 CTV646 CGK → LOP May 21, 07:15 UTCMay 21, 11:25 UTC4h 10m
2026-05-21 CTV719 SUB → CGK May 21, 05:00 UTCMay 21, 05:30 UTC30m
2026-05-21 CTV718 CGK → SUB May 21, 02:00 UTCMay 21, 02:40 UTC40m
2026-05-20 CTV344 CGK → UPG May 20, 19:05 UTCMay 20, 19:40 UTC35m
2026-05-20 CTV943 BTH → CGK May 20, 07:20 UTCMay 20, 07:55 UTC35m
2026-05-20 CTV942 CGK → BTH May 20, 05:00 UTCMay 20, 06:00 UTC1h 0m
2026-05-20 CTV841 BTH → CGK May 20, 03:20 UTCMay 20, 03:35 UTC15m
2026-05-20 CTV841 BTH → CGK May 20, 02:20 UTCMay 20, 02:45 UTC25m
2026-05-19 CTV840 CGK → BTH May 19, 23:50 UTCMay 20, 01:00 UTC1h 10m
2026-05-19 CTV415 PNK → CGK May 19, 10:15 UTCMay 19, 10:35 UTC20m
2026-05-19 CTV414 CGK → PNK May 19, 07:10 UTCMay 19, 07:20 UTC10m
2026-05-19 CTV491 BDJ → CGK May 19, 05:35 UTCMay 19, 06:10 UTC35m
2026-05-19 CTV490 CGK → BDJ May 19, 02:15 UTCMay 19, 02:25 UTC10m
2026-05-19 CTV301 MDC → CGK May 19, 00:50 UTCMay 19, 01:10 UTC20m
2026-05-18 CTV300 CGK → MDC May 18, 18:10 UTCMay 18, 18:20 UTC10m
2026-05-18 CTV945 BTH → CGK May 18, 12:25 UTCMay 18, 13:30 UTC1h 5m
2026-05-18 CTV944 CGK → BTH May 18, 09:50 UTCMay 18, 10:50 UTC1h 0m
2026-05-18 CTV681 DPS → CGK May 18, 08:25 UTCMay 18, 08:35 UTC10m
2026-05-17 CTV680 CGK → DPS May 17, 22:01 UTCMay 17, 22:45 UTC45m
2026-05-17 CTV503 KUL → CGK May 17, 12:25 UTCMay 17, 13:10 UTC45m
2026-05-17 CTV502 CGK → KUL May 17, 08:55 UTCMay 17, 10:40 UTC1h 45m
2026-05-17 CTV791 SRG → CGK May 17, 06:10 UTCMay 17, 06:45 UTC35m
2026-05-17 CTV790 CGK → SRG May 17, 04:25 UTCMay 17, 04:55 UTC30m
2026-05-17 CTV841 BTH → CGK May 17, 02:15 UTCMay 17, 02:35 UTC20m
2026-05-16 CTV840 CGK → BTH May 16, 23:45 UTCMay 17, 00:50 UTC1h 5m
2026-05-16 CTV778 CGK → YIA May 16, 07:20 UTCMay 16, 09:56 UTC2h 35m
2026-05-15 CTV426 CGK → UPG May 15, 11:15 UTCMay 15, 11:45 UTC30m
2026-05-15 CTV976 CGK → TJQ May 15, 05:25 UTCMay 15, 05:35 UTC10m
2026-05-15 CTV995 TKG → CGK May 15, 03:55 UTCMay 15, 04:05 UTC10m
2026-05-15 CTV994 CGK → TKG May 15, 02:25 UTCMay 15, 02:35 UTC10m
2026-05-14 CTV911 KNO → CGK May 14, 13:15 UTCMay 15, 00:00 UTC10h 45m
2026-05-14 CTV965 DJB → CGK May 14, 11:15 UTCMay 14, 12:10 UTC55m
2026-05-14 CTV964 CGK → DJB May 14, 08:50 UTCMay 14, 09:45 UTC55m

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

Mode-S 8A05C4 frequently asked

What is Mode-S code 8A05C4?
8A05C4 is an ICAO 24-bit transponder address. Allocated to Indonesia. Assigned to PK-GQM.
Where is Mode-S 8A05C4 registered?
Mode-S code 8A05C4 is allocated to Indonesia (ID). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 8A05C4 broadcasting right now?
No active broadcast right now. Last signal was 13h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 8A05C4, octal 42402704, decimal 9,045,444.
What flights does 8A05C4 operate?
Mode-S 8A05C4 has broadcast 20 distinct callsigns, including CTV680, CTV961, CTV945, CTV944, CTV686.