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sensors Mode-S transponder

3A4561

ICAO 24-bit transponder address · allocated to France

Currently assigned to F-ORLB · ATR-42-600

Hex
3A4561
Octal
16442541
Decimal
3,818,849
Country
FR
Tail
F-ORLB
Type
AT46
No current signal · last broadcast Jul 26, 22:15 UTC
Flights observed
154
Distinct callsigns
8
Country
FR
Last broadcast
Jul 26, 22:15 UTC

Last known position

Most recent position reported by Mode-S 3A4561.

Country allocation

The ICAO 24-bit address 3A4561 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 8 distinct

Callsign Airline Flights Last seen
SPM1121 Air Saint Pierre 51 2026-07-26
SPM1122 Air Saint Pierre 49 2026-07-26
SPM1124 Air Saint Pierre 24 2026-07-25
SPM1123 Air Saint Pierre 24 2026-07-25
SPM1222 Air Saint Pierre 2 2026-04-30
SPM1221 Air Saint Pierre 2 2026-04-30
SPM1322 Air Saint Pierre 1 2026-04-26
SPM1321 Air Saint Pierre 1 2026-04-26

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 SPM1122 YHZ → FSP Jul 26, 21:30 UTCJul 26, 22:15 UTC45m
2026-07-26 SPM1121 FSP → YHZ Jul 26, 19:15 UTCJul 26, 20:00 UTC45m
2026-07-25 SPM1124 YUL → FSP Jul 25, 19:15 UTCJul 25, 21:40 UTC2h 25m
2026-07-25 SPM1123 FSP → YUL Jul 25, 14:20 UTCJul 25, 16:30 UTC2h 10m
2026-07-24 SPM1122 - Jul 24, 16:00 UTCJul 24, 16:50 UTC50m
2026-07-24 SPM1121 - Jul 24, 11:30 UTCJul 24, 12:25 UTC55m
2026-07-23 SPM1124 YUL → FSP Jul 23, 19:05 UTCJul 23, 21:10 UTC2h 5m
2026-07-23 SPM1123 FSP → YUL Jul 23, 14:20 UTCJul 23, 17:00 UTC2h 40m
2026-07-22 SPM1122 - Jul 22, 16:00 UTCJul 22, 16:50 UTC50m
2026-07-22 SPM1121 - Jul 22, 11:30 UTCJul 22, 12:15 UTC45m
2026-07-20 SPM1122 - Jul 20, 18:20 UTCJul 20, 19:05 UTC45m
2026-07-20 SPM1121 - Jul 20, 13:30 UTCJul 20, 14:20 UTC50m
2026-07-19 SPM1122 - Jul 19, 21:30 UTCJul 19, 22:15 UTC45m
2026-07-19 SPM1121 - Jul 19, 19:35 UTCJul 19, 20:35 UTC1h 0m
2026-07-18 SPM1124 YUL → FSP Jul 18, 19:05 UTCJul 18, 21:10 UTC2h 5m
2026-07-18 SPM1123 FSP → YUL Jul 18, 14:10 UTCJul 18, 16:50 UTC2h 40m
2026-07-17 SPM1122 - Jul 17, 16:10 UTCJul 17, 16:59 UTC50m
2026-07-17 SPM1121 - Jul 17, 11:25 UTCJul 17, 12:15 UTC50m
2026-07-16 SPM1124 - Jul 16, 19:30 UTCJul 16, 21:30 UTC2h 0m
2026-07-16 SPM1123 FSP → YUL Jul 16, 14:25 UTCJul 16, 17:14 UTC2h 50m
2026-07-15 SPM1122 - Jul 15, 15:35 UTCJul 15, 16:25 UTC50m
2026-07-15 SPM1121 - Jul 15, 11:30 UTCJul 15, 12:25 UTC55m
2026-07-13 SPM1122 - Jul 13, 18:35 UTCJul 13, 19:25 UTC50m
2026-07-13 SPM1121 - Jul 13, 13:20 UTCJul 13, 14:05 UTC45m
2026-07-12 SPM1122 - Jul 12, 21:35 UTCJul 12, 22:25 UTC50m
2026-07-12 SPM1121 - Jul 12, 19:30 UTCJul 12, 20:15 UTC45m
2026-07-11 SPM1124 - Jul 11, 19:00 UTCJul 11, 21:15 UTC2h 15m
2026-07-11 SPM1123 FSP → YUL Jul 11, 14:20 UTCJul 11, 16:50 UTC2h 30m
2026-07-10 SPM1122 - Jul 10, 16:20 UTCJul 10, 17:10 UTC50m
2026-07-10 SPM1121 - Jul 10, 11:25 UTCJul 10, 12:20 UTC55m
2026-07-09 SPM1124 - Jul 9, 19:10 UTCJul 9, 21:15 UTC2h 5m
2026-07-09 SPM1123 FSP → YUL Jul 9, 14:25 UTCJul 9, 17:05 UTC2h 40m
2026-07-08 SPM1122 - Jul 8, 15:45 UTCJul 8, 16:40 UTC55m
2026-07-08 SPM1121 - Jul 8, 11:30 UTCJul 8, 12:10 UTC40m
2026-07-06 SPM1122 - Jul 6, 18:40 UTCJul 6, 19:30 UTC50m
2026-07-06 SPM1121 - Jul 6, 13:20 UTCJul 6, 14:05 UTC45m
2026-07-05 SPM1122 - Jul 5, 21:45 UTCJul 5, 22:30 UTC45m
2026-07-05 SPM1121 - Jul 5, 19:40 UTCJul 5, 20:40 UTC1h 0m
2026-07-04 SPM1124 - Jul 4, 19:05 UTCJul 4, 21:10 UTC2h 5m
2026-07-04 SPM1123 FSP → YUL Jul 4, 15:15 UTCJul 4, 17:10 UTC1h 55m
2026-07-04 SPM1123 FSP → YUL Jul 4, 14:25 UTCJul 4, 15:10 UTC45m
2026-07-03 SPM1122 - Jul 3, 16:35 UTCJul 3, 17:30 UTC55m
2026-07-03 SPM1121 - Jul 3, 11:25 UTCJul 3, 12:15 UTC50m
2026-07-02 SPM1124 - Jul 2, 19:00 UTCJul 2, 21:10 UTC2h 10m
2026-07-02 SPM1123 FSP → YUL Jul 2, 14:20 UTCJul 2, 16:55 UTC2h 35m
2026-07-01 SPM1122 - Jul 1, 15:45 UTCJul 1, 16:40 UTC55m
2026-07-01 SPM1121 - Jul 1, 11:20 UTCJul 1, 12:05 UTC45m
2026-06-29 SPM1122 - Jun 29, 18:55 UTCJun 29, 19:44 UTC50m
2026-06-29 SPM1121 - Jun 29, 13:19 UTCJun 29, 14:09 UTC50m
2026-06-28 SPM1122 - Jun 28, 21:55 UTCJun 28, 22:45 UTC50m

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

Mode-S 3A4561 frequently asked

What is Mode-S code 3A4561?
3A4561 is an ICAO 24-bit transponder address. Allocated to France. Assigned to F-ORLB.
Where is Mode-S 3A4561 registered?
Mode-S code 3A4561 is allocated to France (FR). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 3A4561 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 22:15 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 3A4561, octal 16442541, decimal 3,818,849.
What flights does 3A4561 operate?
Mode-S 3A4561 has broadcast 8 distinct callsigns, including SPM1121, SPM1122, SPM1124, SPM1123, SPM1222.