Apparatus

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sensors Mode-S transponder

7C2E54

ICAO 24-bit transponder address · allocated to Australia

Currently assigned to VH-JFQ · AIRBUS HELICOPTERS EC-145 · operated by ROYAL FLYING DOCTOR SERVICE OF AUSTRALIA (WESTERN OPERATIONS)

Hex
7C2E54
Octal
37027124
Decimal
8,138,324
Country
AU
Tail
VH-JFQ
Type
EC45
No current signal · last broadcast 20h ago
Flights observed
39
Distinct callsigns
1
Country
AU
Last broadcast
20h ago

Last known position

Most recent position reported by Mode-S 7C2E54.

Country allocation

The ICAO 24-bit address 7C2E54 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 1 distinct

Callsign Airline Flights Last seen
FD645 - 39 2026-07-14

Recent flights last 39

DateFlightRouteTakeoffLandingDuration
2026-07-14 FD645 - Jul 14, 08:00 UTCJul 14, 08:55 UTC55m
2026-07-14 FD645 - Jul 14, 05:35 UTCJul 14, 06:30 UTC55m
2026-07-13 FD645 - Jul 13, 06:35 UTCJul 13, 07:35 UTC1h 0m
2026-07-13 FD645 - Jul 13, 04:35 UTCJul 13, 05:35 UTC1h 0m
2026-07-07 FD645 - Jul 7, 12:15 UTCJul 7, 13:05 UTC50m
2026-07-07 FD645 - Jul 7, 08:45 UTCJul 7, 10:25 UTC1h 40m
2026-07-07 FD645 JAD → BQB Jul 7, 05:20 UTCJul 7, 06:05 UTC45m
2026-07-04 FD645 - Jul 4, 07:30 UTCJul 4, 08:40 UTC1h 10m
2026-07-04 FD645 - Jul 4, 05:25 UTCJul 4, 05:50 UTC25m
2026-07-03 FD645 - Jul 3, 05:45 UTCJul 3, 06:05 UTC20m
2026-07-02 FD645 - Jul 2, 10:10 UTCJul 2, 11:05 UTC55m
2026-07-02 FD645 - Jul 2, 08:10 UTCJul 2, 08:30 UTC20m
2026-07-01 FD645 - Jul 1, 09:45 UTCJul 1, 10:15 UTC30m
2026-07-01 FD645 - Jul 1, 06:50 UTCJul 1, 07:00 UTC10m
2026-07-01 FD645 - Jul 1, 05:05 UTCJul 1, 05:20 UTC15m
2026-07-01 FD645 - Jul 1, 02:30 UTCJul 1, 03:30 UTC1h 0m
2026-06-30 FD645 - Jun 30, 08:45 UTCJun 30, 09:30 UTC45m
2026-06-30 FD645 - Jun 30, 07:10 UTCJun 30, 08:05 UTC55m
2026-06-30 FD645 - Jun 30, 03:00 UTCJun 30, 04:10 UTC1h 10m
2026-06-30 FD645 - Jun 30, 01:55 UTCJun 30, 02:10 UTC15m
2026-06-27 FD645 - Jun 27, 07:39 UTCJun 27, 08:49 UTC1h 10m
2026-06-27 FD645 - Jun 27, 05:35 UTCJun 27, 07:04 UTC1h 30m
2026-06-26 FD645 HAN → DMK Jun 26, 09:20 UTCJun 26, 09:59 UTC40m
2026-06-26 FD645 HAN → DMK Jun 26, 07:35 UTCJun 26, 08:10 UTC35m
2026-06-26 FD645 HAN → DMK Jun 26, 05:55 UTCJun 26, 06:50 UTC55m
2026-06-26 FD645 HAN → DMK Jun 26, 04:20 UTCJun 26, 04:34 UTC15m
2026-06-25 FD645 HAN → DMK Jun 25, 10:04 UTCJun 25, 11:39 UTC1h 35m
2026-06-25 FD645 HAN → DMK Jun 25, 08:04 UTCJun 25, 08:55 UTC50m
2026-06-24 FD645 HAN → DMK Jun 24, 07:44 UTCJun 24, 08:39 UTC55m
2026-06-24 FD645 HAN → DMK Jun 24, 05:29 UTCJun 24, 06:15 UTC45m
2026-06-23 FD645 HAN → DMK Jun 23, 10:19 UTCJun 23, 11:45 UTC1h 25m
2026-06-23 FD645 HAN → DMK Jun 23, 04:50 UTCJun 23, 05:59 UTC1h 10m
2026-06-22 FD645 HAN → DMK Jun 22, 06:00 UTCJun 22, 07:10 UTC1h 10m
2026-06-22 FD645 HAN → DMK Jun 22, 02:19 UTCJun 22, 03:05 UTC45m
2026-06-19 FD645 HAN → DMK Jun 19, 05:59 UTCJun 19, 06:14 UTC15m
2026-06-08 FD645 HAN → DMK Jun 8, 23:45 UTCJun 9, 01:25 UTC1h 40m
2026-06-03 FD645 HAN → DMK Jun 3, 06:25 UTCJun 3, 06:35 UTC10m
2026-06-03 FD645 HAN → DMK Jun 3, 02:30 UTCJun 3, 02:45 UTC15m
2026-05-28 FD645 HAN → DMK May 28, 04:05 UTCMay 28, 05:00 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 VH-JFQ page for operator, model, and routing details .

Mode-S 7C2E54 frequently asked

What is Mode-S code 7C2E54?
7C2E54 is an ICAO 24-bit transponder address. Allocated to Australia. Assigned to VH-JFQ.
Where is Mode-S 7C2E54 registered?
Mode-S code 7C2E54 is allocated to Australia (AU). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 7C2E54 broadcasting right now?
No active broadcast right now. Last signal was 20h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 7C2E54, octal 37027124, decimal 8,138,324.
What flights does 7C2E54 operate?
Mode-S 7C2E54 has broadcast 1 distinct callsign, including FD645.