sensors Mode-S transponder

3B77E4

ICAO 24-bit transponder address · allocated to France

Currently assigned to F-RAFQ · DASSAULT Falcon 900

Hex
3B77E4
Octal
16673744
Decimal
3,897,316
Country
FR
Tail
F-RAFQ
Type
F900
No current signal · last broadcast 23h ago
Flights observed
43
Distinct callsigns
11
Country
FR
Last broadcast
23h ago

Last known position

Most recent position reported by Mode-S 3B77E4.

Country allocation

The ICAO 24-bit address 3B77E4 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 11 distinct

Callsign Airline Flights Last seen
CTM1280 - 12 2026-06-01
CTM006 - 8 2026-05-01
CTM005 - 5 2026-06-02
CTM1281 - 4 2026-05-23
CTM009 - 3 2026-05-18
CTM1282 - 2 2026-04-17
CTM1278 - 2 2026-05-29
CTM1105 - 2 2026-04-14
CTM003 - 2 2026-04-22
CTM001 - 2 2026-04-20
CTM008 - 1 2026-05-08

Recent flights last 43

DateFlightRouteTakeoffLandingDuration
2026-06-02 CTM005 - Jun 2, 11:25 UTCJun 2, 12:20 UTC55m
2026-06-02 CTM005 - Jun 2, 06:50 UTCJun 2, 07:30 UTC40m
2026-06-01 CTM1280 HEL → VIY Jun 1, 14:15 UTCJun 1, 17:45 UTC3h 30m
2026-06-01 CTM005 - Jun 1, 09:45 UTCJun 1, 12:30 UTC2h 45m
2026-05-29 CTM1278 XCR → VIY May 29, 13:30 UTCMay 29, 13:55 UTC25m
2026-05-29 CTM1278 - May 29, 11:30 UTCMay 29, 11:55 UTC25m
2026-05-28 CTM1280 - May 28, 13:20 UTCMay 28, 14:50 UTC1h 30m
2026-05-28 CTM1280 - May 28, 08:20 UTCMay 28, 09:00 UTC40m
2026-05-28 CTM1280 - May 28, 06:55 UTCMay 28, 07:45 UTC50m
2026-05-23 CTM1281 - May 23, 16:10 UTCMay 23, 16:40 UTC30m
2026-05-23 CTM1281 - May 23, 14:50 UTCMay 23, 15:50 UTC1h 0m
2026-05-22 CTM1281 - May 22, 08:30 UTCMay 22, 10:15 UTC1h 45m
2026-05-21 CTM1281 - May 21, 13:45 UTCMay 21, 15:10 UTC1h 25m
2026-05-18 CTM009 - May 18, 17:55 UTCMay 18, 19:50 UTC1h 54m
2026-05-17 CTM009 - May 17, 15:55 UTCMay 17, 17:55 UTC2h 0m
2026-05-17 CTM009 - May 17, 14:40 UTCMay 17, 15:10 UTC30m
2026-05-11 CTM1280 - May 11, 15:20 UTCMay 11, 16:10 UTC50m
2026-05-11 CTM1280 - May 11, 13:10 UTCMay 11, 14:40 UTC1h 30m
2026-05-11 CTM1280 - May 11, 10:20 UTCMay 11, 10:40 UTC20m
2026-05-11 CTM1280 - May 11, 08:20 UTCMay 11, 09:10 UTC50m
2026-05-11 CTM1280 VIY → EIN May 11, 06:20 UTCMay 11, 07:30 UTC1h 10m
2026-05-08 CTM008 - May 8, 06:45 UTCMay 8, 14:55 UTC8h 10m
2026-05-07 CTM1280 VIY → VIY May 7, 13:30 UTCMay 7, 13:40 UTC10m
2026-05-01 CTM006 - May 1, 13:00 UTCMay 1, 15:55 UTC2h 55m
2026-05-01 CTM006 ATH → ATH May 1, 12:50 UTCMay 1, 12:55 UTC5m
2026-05-01 CTM006 - May 1, 06:20 UTCMay 1, 11:30 UTC5h 10m
2026-04-30 CTM006 - Apr 30, 15:10 UTCApr 30, 15:20 UTC10m
2026-04-30 CTM006 - Apr 30, 11:30 UTCApr 30, 12:25 UTC55m
2026-04-29 CTM006 - Apr 29, 15:05 UTCApr 30, 12:25 UTC21h 20m
2026-04-29 CTM006 - Apr 29, 13:05 UTCApr 30, 12:25 UTC23h 20m
2026-04-29 CTM006 - Apr 29, 11:25 UTCApr 29, 15:05 UTC3h 40m
2026-04-29 CTM1280 - Apr 29, 08:34 UTCApr 29, 10:15 UTC1h 41m
2026-04-29 CTM1280 VIY → LDE Apr 29, 07:05 UTCApr 29, 08:10 UTC1h 5m
2026-04-28 CTM005 - Apr 28, 18:30 UTCApr 28, 19:30 UTC1h 0m
2026-04-27 CTM005 - Apr 27, 09:55 UTCApr 27, 10:55 UTC1h 0m
2026-04-22 CTM003 - Apr 22, 14:20 UTCApr 22, 14:55 UTC35m
2026-04-22 CTM003 - Apr 22, 06:45 UTCApr 22, 07:15 UTC30m
2026-04-20 CTM001 GDN → VIY Apr 20, 19:10 UTCApr 20, 21:05 UTC1h 55m
2026-04-20 CTM001 - Apr 20, 07:55 UTCApr 20, 09:30 UTC1h 35m
2026-04-17 CTM1282 WTN → VIY Apr 17, 09:40 UTCApr 17, 10:45 UTC1h 5m
2026-04-17 CTM1282 TNF → WTN Apr 17, 07:35 UTCApr 17, 08:35 UTC1h 0m
2026-04-14 CTM1105 - Apr 14, 14:35 UTCApr 14, 14:45 UTC10m
2026-04-14 CTM1105 - Apr 14, 12:50 UTCApr 14, 13:15 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 F-RAFQ page for operator, model, and routing details .

Mode-S 3B77E4 frequently asked

What is Mode-S code 3B77E4?
3B77E4 is an ICAO 24-bit transponder address. Allocated to France. Assigned to F-RAFQ.
Where is Mode-S 3B77E4 registered?
Mode-S code 3B77E4 is allocated to France (FR). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 3B77E4 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 3B77E4, octal 16673744, decimal 3,897,316.
What flights does 3B77E4 operate?
Mode-S 3B77E4 has broadcast 11 distinct callsigns, including CTM1280, CTM006, CTM005, CTM1281, CTM009.