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sensors Mode-S transponder

7CF9E9

ICAO 24-bit transponder address · allocated to Australia

Currently assigned to A54-018 · PILATUS PC-21

Hex
7CF9E9
Octal
37174751
Decimal
8,190,441
Country
AU
Tail
A54-018
Type
PC21
Broadcasting now · callsign VIPR07 · 6,175 ft
Flights observed
118
Distinct callsigns
20
Country
AU
Last broadcast
1h ago

Current position

7CF9E9 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 7CF9E9 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
VIPR77 - 7 2026-07-02
VODO - 5 2026-07-03
VIPR71 - 5 2026-07-14
VAMP2 - 5 2026-06-17
VORT2 - 4 2026-06-15
VIPR75 - 4 2026-05-20
VIPR44 - 4 2026-05-29
VIPR10 - 4 2026-06-24
VIPR99 - 3 2026-05-26
VIPR74 - 3 2026-06-10
VIPR70 - 3 2026-06-18
VIPR45 - 3 2026-07-02
VIPR43 - 3 2026-07-03
VIPR42 - 3 2026-05-12
VIPR12 - 3 2026-06-12
STGR - 3 2026-06-30
VIPR73 - 2 2026-04-30
VIPR46 - 2 2026-05-25
VIPR41 - 2 2026-06-25
VIPR19 - 2 2026-05-22

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 SIRA619 - Jul 14, 05:55 UTCJul 14, 06:10 UTC15m
2026-07-14 SIRA619 - Jul 14, 04:50 UTCJul 14, 05:00 UTC10m
2026-07-14 VIPR71 - Jul 14, 01:35 UTCJul 14, 02:50 UTC1h 15m
2026-07-13 VALT2 - Jul 13, 07:55 UTCJul 13, 08:35 UTC40m
2026-07-13 VIPR17 - Jul 13, 04:05 UTCJul 13, 05:20 UTC1h 15m
2026-07-03 VIPR43 - Jul 3, 06:00 UTCJul 3, 07:15 UTC1h 15m
2026-07-03 VODO - Jul 3, 02:55 UTCJul 3, 03:30 UTC35m
2026-07-02 VIPR45 - Jul 2, 07:15 UTCJul 2, 08:35 UTC1h 20m
2026-07-02 VIPR77 - Jul 2, 01:55 UTCJul 2, 03:40 UTC1h 45m
2026-07-01 VIPR43 - Jul 1, 06:40 UTCJul 1, 07:50 UTC1h 10m
2026-07-01 SAMB2 - Jul 1, 03:05 UTCJul 1, 04:00 UTC55m
2026-06-30 STGR - Jun 30, 04:15 UTCJun 30, 04:50 UTC35m
2026-06-29 SLNG - Jun 29, 07:25 UTCJun 29, 08:24 UTC1h 0m
2026-06-29 VIPR15 - Jun 29, 04:04 UTCJun 29, 05:00 UTC55m
2026-06-25 VIPR41 - Jun 25, 09:59 UTCJun 25, 10:55 UTC55m
2026-06-25 VIPR45 - Jun 25, 07:05 UTCJun 25, 08:14 UTC1h 10m
2026-06-25 VIPR77 - Jun 25, 03:44 UTCJun 25, 04:40 UTC55m
2026-06-24 CYGT663 - Jun 24, 13:14 UTCJun 24, 13:40 UTC25m
2026-06-24 VIPR10 - Jun 24, 06:55 UTCJun 24, 08:09 UTC1h 15m
2026-06-24 VIPR71 - Jun 24, 03:50 UTCJun 24, 04:59 UTC1h 10m
2026-06-22 VIPR71 - Jun 22, 04:54 UTCJun 22, 05:10 UTC15m
2026-06-22 VIPR71 - Jun 22, 03:54 UTCJun 22, 04:04 UTC10m
2026-06-19 VIPR13 - Jun 19, 05:09 UTCJun 19, 05:45 UTC35m
2026-06-19 VIPR71 - Jun 19, 00:29 UTCJun 19, 01:29 UTC1h 0m
2026-06-18 VODO - Jun 18, 06:00 UTCJun 18, 07:10 UTC1h 10m
2026-06-18 VIPR70 - Jun 18, 03:05 UTCJun 18, 03:15 UTC10m
2026-06-18 VIPR70 - Jun 18, 01:55 UTCJun 18, 02:05 UTC10m
2026-06-17 VAMP2 - Jun 17, 03:35 UTCJun 17, 04:20 UTC45m
2026-06-16 TANG12 - Jun 16, 05:15 UTCJun 16, 06:30 UTC1h 15m
2026-06-16 VODO2 - Jun 16, 01:55 UTCJun 16, 02:34 UTC40m
2026-06-15 VORT2 - Jun 15, 07:40 UTCJun 15, 08:25 UTC45m
2026-06-15 VIPR47 - Jun 15, 03:24 UTCJun 15, 04:40 UTC1h 15m
2026-06-12 VIPR12 - Jun 12, 04:05 UTCJun 12, 05:35 UTC1h 30m
2026-06-12 VIPR77 - Jun 12, 00:35 UTCJun 12, 01:30 UTC55m
2026-06-10 VIPR74 - Jun 10, 04:10 UTCJun 10, 05:25 UTC1h 15m
2026-06-10 VIPR76 - Jun 10, 01:15 UTCJun 10, 02:55 UTC1h 40m
2026-06-09 SNKE - Jun 9, 04:25 UTCJun 9, 04:55 UTC30m
2026-06-09 SBOT3 - Jun 9, 02:05 UTCJun 9, 02:30 UTC25m
2026-06-08 VIPR10 - Jun 8, 03:25 UTCJun 8, 04:25 UTC1h 0m
2026-05-29 VIPR44 - May 29, 05:55 UTCMay 29, 07:00 UTC1h 5m
2026-05-28 TANG02 - May 28, 07:35 UTCMay 28, 08:40 UTC1h 5m
2026-05-28 VIPR52 - May 28, 05:00 UTCMay 28, 06:00 UTC1h 0m
2026-05-28 VODO - May 28, 02:30 UTCMay 28, 03:45 UTC1h 15m
2026-05-27 VIPR70 - May 27, 01:05 UTCMay 27, 02:14 UTC1h 10m
2026-05-26 VIPR99 - May 26, 06:14 UTCMay 26, 07:19 UTC1h 5m
2026-05-26 SIRA611 - May 26, 03:30 UTCMay 26, 04:39 UTC1h 10m
2026-05-26 VIPR45 - May 26, 00:09 UTCMay 26, 01:30 UTC1h 20m
2026-05-25 VIPR46 - May 25, 07:15 UTCMay 25, 08:30 UTC1h 15m
2026-05-25 SIRA696 - May 25, 04:40 UTCMay 25, 05:45 UTC1h 5m
2026-05-25 VIPR77 - May 25, 02:40 UTCMay 25, 03:05 UTC25m

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 A54-018 page for operator, model, and routing details .

Mode-S 7CF9E9 frequently asked

What is Mode-S code 7CF9E9?
7CF9E9 is an ICAO 24-bit transponder address. Allocated to Australia. Assigned to A54-018.
Where is Mode-S 7CF9E9 registered?
Mode-S code 7CF9E9 is allocated to Australia (AU). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 7CF9E9 broadcasting right now?
Yes. Mode-S 7CF9E9 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 7CF9E9, octal 37174751, decimal 8,190,441.
What flights does 7CF9E9 operate?
Mode-S 7CF9E9 has broadcast 20 distinct callsigns, including VIPR77, VODO, VIPR71, VAMP2, VORT2.