Apparatus

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sensors Mode-S transponder

7CF990

ICAO 24-bit transponder address · allocated to Australia

Currently assigned to A34-004 · ALENIA C-27J Spartan

Hex
7CF990
Octal
37174620
Decimal
8,190,352
Country
AU
Tail
A34-004
Type
C27J
No current signal · last broadcast 3d ago
Flights observed
71
Distinct callsigns
20
Country
AU
Last broadcast
3d ago

Last known position

Most recent position reported by Mode-S 7CF990.

Country allocation

The ICAO 24-bit address 7CF990 falls within the block assigned to Australia (AU) by ICAO Annex 10, Volume III. Every aircraft registered in Australia 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
WLBY70 - 7 2026-04-22
ASY632 - 7 2026-06-18
WLBY37 - 5 2026-05-28
WLBY23 - 5 2026-06-19
WLBY43 - 4 2026-07-09
WLBY21 - 4 2026-06-25
KAOS41 - 3 2026-07-09
KAOS24 - 3 2026-05-06
ASY654 - 3 2026-07-17
ASY616 - 3 2026-06-24
ASY609 - 3 2026-07-07
WLBY55 - 2 2026-04-26
WLBY40 - 2 2026-07-08
WLBY35 - 2 2026-05-07
WLBY25 - 2 2026-05-06
WLBY14 - 2 2026-05-29
WLBY12 - 2 2026-05-28
WLBY01 - 2 2026-05-25
KAOS46 - 2 2026-07-14
ASY610 - 2 2026-06-01

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-17 ASY654 - Jul 17, 02:39 UTCJul 17, 03:45 UTC1h 5m
2026-07-17 ASY654 - Jul 17, 01:05 UTCJul 17, 01:45 UTC40m
2026-07-14 ASY654 - Jul 14, 23:15 UTCJul 15, 01:45 UTC2h 30m
2026-07-14 KAOS46 - Jul 14, 09:45 UTCJul 14, 10:15 UTC30m
2026-07-14 KAOS46 - Jul 14, 06:10 UTCJul 14, 06:30 UTC20m
2026-07-14 WLBY56 - Jul 14, 02:55 UTCJul 14, 03:35 UTC40m
2026-07-09 KAOS41 - Jul 9, 10:45 UTCJul 9, 11:10 UTC25m
2026-07-09 KAOS41 - Jul 9, 09:00 UTCJul 9, 09:10 UTC10m
2026-07-09 KAOS41 - Jul 9, 05:00 UTCJul 9, 05:25 UTC25m
2026-07-09 WLBY43 - Jul 9, 00:55 UTCJul 9, 01:55 UTC1h 0m
2026-07-08 WLBY43 - Jul 8, 23:25 UTCJul 8, 23:55 UTC30m
2026-07-08 WLBY40 - Jul 8, 02:30 UTCJul 8, 02:45 UTC15m
2026-07-08 WLBY40 - Jul 8, 00:40 UTCJul 8, 00:50 UTC10m
2026-07-07 ASY609 - Jul 7, 08:20 UTCJul 7, 08:55 UTC35m
2026-07-07 ASY609 - Jul 7, 07:05 UTCJul 7, 07:35 UTC30m
2026-07-06 ASY609 - Jul 6, 23:35 UTCJul 7, 01:35 UTC2h 0m
2026-06-25 WLBY21 - Jun 25, 03:29 UTCJun 25, 03:54 UTC25m
2026-06-25 WLBY21 - Jun 25, 02:25 UTCJun 25, 02:54 UTC30m
2026-06-25 WLBY21 - Jun 25, 00:49 UTCJun 25, 01:19 UTC30m
2026-06-24 WLBY21 - Jun 24, 23:10 UTCJun 24, 23:29 UTC20m
2026-06-24 ASY616 - Jun 24, 05:09 UTCJun 24, 05:54 UTC45m
2026-06-24 ASY616 - Jun 24, 02:40 UTCJun 24, 02:49 UTC10m
2026-06-22 ASY616 - Jun 22, 00:04 UTCJun 22, 00:40 UTC35m
2026-06-19 WLBY23 - Jun 19, 22:49 UTCJun 20, 00:29 UTC1h 40m
2026-06-19 WLBY23 - Jun 19, 06:59 UTCJun 19, 07:25 UTC25m
2026-06-19 WLBY23 - Jun 19, 05:19 UTCJun 19, 05:30 UTC10m
2026-06-19 WLBY23 - Jun 19, 00:45 UTCJun 19, 01:24 UTC40m
2026-06-18 WLBY23 - Jun 18, 23:00 UTCJun 19, 00:24 UTC1h 24m
2026-06-18 ASY632 - Jun 18, 07:40 UTCJun 18, 08:10 UTC30m
2026-06-18 ASY632 - Jun 18, 06:20 UTCJun 18, 07:00 UTC40m
2026-06-17 ASY632 - Jun 17, 00:20 UTCJun 17, 00:55 UTC35m
2026-06-16 ASY632 - Jun 16, 04:45 UTCJun 16, 05:34 UTC50m
2026-06-15 ASY632 - Jun 15, 23:45 UTCJun 16, 00:40 UTC55m
2026-06-15 ASY632 - Jun 15, 02:55 UTCJun 15, 03:30 UTC35m
2026-06-14 ASY632 - Jun 14, 23:50 UTCJun 15, 01:15 UTC1h 25m
2026-06-12 WLBY43 - Jun 12, 04:55 UTCJun 12, 05:35 UTC40m
2026-06-10 WLBY43 - Jun 10, 22:55 UTCJun 10, 23:35 UTC40m
2026-06-10 ASY597 - Jun 10, 10:45 UTCJun 10, 11:20 UTC35m
2026-06-10 ASY597 - Jun 10, 09:20 UTCJun 10, 10:05 UTC45m
2026-06-01 ASY610 - Jun 1, 00:25 UTCJun 1, 00:40 UTC15m
2026-05-31 ASY610 - May 31, 22:55 UTCMay 31, 23:30 UTC35m
2026-05-29 WLBY14 - May 29, 04:45 UTCMay 29, 05:45 UTC1h 0m
2026-05-29 WLBY14 - May 29, 00:35 UTCMay 29, 03:50 UTC3h 15m
2026-05-28 WLBY12 - May 28, 07:35 UTCMay 28, 09:10 UTC1h 35m
2026-05-28 WLBY12 - May 28, 05:05 UTCMay 28, 06:05 UTC1h 0m
2026-05-28 WLBY37 - May 28, 02:00 UTCMay 28, 02:15 UTC15m
2026-05-28 WLBY37 - May 28, 00:15 UTCMay 28, 00:50 UTC35m
2026-05-27 WLBY37 - May 27, 06:20 UTCMay 27, 08:00 UTC1h 40m
2026-05-27 WLBY37 XRH → XRH May 27, 03:59 UTCMay 27, 05:04 UTC1h 5m
2026-05-27 WLBY37 - May 27, 00:14 UTCMay 27, 01:34 UTC1h 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 A34-004 page for operator, model, and routing details .

Mode-S 7CF990 frequently asked

What is Mode-S code 7CF990?
7CF990 is an ICAO 24-bit transponder address. Allocated to Australia. Assigned to A34-004.
Where is Mode-S 7CF990 registered?
Mode-S code 7CF990 is allocated to Australia (AU). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 7CF990 broadcasting right now?
No active broadcast right now. Last signal was 3d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 7CF990, octal 37174620, decimal 8,190,352.
What flights does 7CF990 operate?
Mode-S 7CF990 has broadcast 20 distinct callsigns, including WLBY70, ASY632, WLBY37, WLBY23, WLBY43.