sensors Mode-S transponder

3A3CB2

ICAO 24-bit transponder address · allocated to France

Currently assigned to F-OPFS · ATR-72-600

Hex
3A3CB2
Octal
16436262
Decimal
3,816,626
Country
FR
Tail
F-OPFS
Type
AT76
No current signal · last broadcast 23h ago
Flights observed
9
Distinct callsigns
5
Country
FR
Last broadcast
23h ago

Last known position

Most recent position reported by Mode-S 3A3CB2.

Country allocation

The ICAO 24-bit address 3A3CB2 falls within the block assigned to France (FR) by ICAO Annex 10, Volume III. Every aircraft registered in France 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 5 distinct

Callsign Airline Flights Last seen
VT5390 - 3 2026-04-13
VT304 - 2 2026-04-13
VT211 - 2 2026-04-13
VT4360 - 1 2026-04-13
VT4100 - 1 2026-04-12

Recent flights last 9

DateFlightRouteTakeoffLandingDuration
2026-04-13 VT211 - Apr 13, 23:05 UTCApr 13, 23:20 UTC15m
2026-04-13 VT211 - Apr 13, 20:25 UTCApr 13, 21:05 UTC40m
2026-04-13 VT304 - Apr 13, 19:25 UTCApr 13, 19:35 UTC10m
2026-04-13 VT304 - Apr 13, 17:55 UTCApr 13, 18:05 UTC10m
2026-04-13 VT4360 - Apr 13, 05:35 UTCApr 13, 05:50 UTC15m
2026-04-13 VT5390 - Apr 13, 04:20 UTCApr 13, 04:55 UTC35m
2026-04-13 VT5390 - Apr 13, 04:00 UTCApr 13, 04:15 UTC15m
2026-04-13 VT5390 - Apr 13, 01:05 UTCApr 13, 01:50 UTC45m
2026-04-12 VT4100 - Apr 12, 17:55 UTCApr 12, 18:05 UTC10m

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 F-OPFS page for operator, model, and routing details .

Mode-S 3A3CB2 frequently asked

What is Mode-S code 3A3CB2?
3A3CB2 is an ICAO 24-bit transponder address. Allocated to France. Assigned to F-OPFS.
Where is Mode-S 3A3CB2 registered?
Mode-S code 3A3CB2 is allocated to France (FR). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 3A3CB2 broadcasting right now?
No active broadcast right now. Last signal was 23h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 3A3CB2, octal 16436262, decimal 3,816,626.
What flights does 3A3CB2 operate?
Mode-S 3A3CB2 has broadcast 5 distinct callsigns, including VT5390, VT304, VT211, VT4360, VT4100.