Apparatus

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sensors Mode-S transponder

39B225

ICAO 24-bit transponder address · allocated to France

Currently assigned to F-HMRF · BOEING 777-200LR

Hex
39B225
Octal
16331045
Decimal
3,781,157
Country
FR
Tail
F-HMRF
Type
B77L
Broadcasting now · callsign CMA841 · 34,000 ft
Flights observed
227
Distinct callsigns
20
Country
FR
Last broadcast
Jul 26, 15:15 UTC

Current position

39B225 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 39B225 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 20 distinct

Callsign Airline Flights Last seen
CMA841 - 51 2026-07-20
CMA627 Central European Airlines 49 2026-07-24
CMA626 - 26 2026-07-23
CMA840 - 18 2026-07-20
CMA731 - 16 2026-07-22
CMA575 Central European Airlines 13 2026-07-26
CMA574 Central European Airlines 11 2026-07-26
CMA730 - 10 2026-07-21
CMA576 - 4 2026-06-27
ABB859 - 4 2026-06-28
ABB856 Business Aviation 3 2026-04-25
CMA577 Central European Airlines 2 2026-05-03
CMA573 Central European Airlines 2 2026-05-06
CMA561 - 2 2026-07-10
CMA560 - 2 2026-07-10
CMA380 - 2 2026-07-11
ABB853 - 2 2026-04-22
ABB852 Business Aviation 2 2026-04-22
ABB851 - 2 2026-04-21
ABB850 - 2 2026-04-20

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 CMA575 HKG → HKG Jul 26, 15:00 UTCJul 26, 15:15 UTC15m
2026-07-26 CMA574 CDG → HKG Jul 26, 06:20 UTCJul 26, 06:35 UTC16m
2026-07-25 CMA574 CDG → HKG Jul 25, 18:45 UTCJul 25, 22:55 UTC4h 10m
2026-07-24 CMA627 CAN → CDG Jul 24, 03:30 UTCJul 24, 17:15 UTC13h 45m
2026-07-23 CMA627 CAN → CDG Jul 23, 16:50 UTCJul 24, 15:15 UTC22h 25m
2026-07-23 CMA626 - Jul 23, 09:20 UTCJul 24, 03:50 UTC18h 30m
2026-07-23 CMA626 - Jul 23, 07:20 UTCJul 24, 03:50 UTC20h 30m
2026-07-23 CMA626 - Jul 23, 07:10 UTCJul 24, 03:50 UTC20h 40m
2026-07-22 CMA731 - Jul 22, 11:30 UTCJul 23, 04:40 UTC17h 10m
2026-07-21 CMA730 - Jul 21, 20:30 UTCJul 22, 05:25 UTC8h 55m
2026-07-20 CMA841 - Jul 20, 10:20 UTCJul 21, 04:20 UTC18h 0m
2026-07-20 CMA841 - Jul 20, 07:25 UTCJul 21, 04:20 UTC20h 54m
2026-07-20 CMA841 - Jul 20, 05:20 UTCJul 21, 04:20 UTC22h 59m
2026-07-20 CMA840 - Jul 20, 03:50 UTCJul 21, 03:15 UTC23h 25m
2026-07-19 CMA731 - Jul 19, 08:20 UTCJul 19, 21:20 UTC13h 0m
2026-07-18 CMA730 - Jul 18, 17:05 UTCJul 19, 03:45 UTC10h 40m
2026-07-18 CMA841 - Jul 18, 09:00 UTCJul 18, 13:50 UTC4h 50m
2026-07-17 CMA841 - Jul 17, 14:35 UTCJul 18, 13:15 UTC22h 41m
2026-07-17 CMA840 - Jul 17, 11:20 UTCJul 18, 11:15 UTC23h 56m
2026-07-17 CMA840 - Jul 17, 10:40 UTCJul 18, 09:15 UTC22h 36m
2026-07-17 CMA841 - Jul 17, 02:39 UTCJul 17, 07:20 UTC4h 40m
2026-07-16 CMA841 - Jul 16, 09:45 UTCJul 17, 07:20 UTC21h 35m
2026-07-16 CMA841 - Jul 16, 07:20 UTCJul 17, 07:14 UTC23h 55m
2026-07-16 CMA840 - Jul 16, 06:15 UTCJul 17, 05:15 UTC23h 0m
2026-07-14 CMA627 - Jul 14, 23:40 UTCJul 15, 14:05 UTC14h 25m
2026-07-14 CMA627 - Jul 14, 17:20 UTCJul 15, 14:05 UTC20h 44m
2026-07-14 CMA627 - Jul 14, 17:10 UTCJul 15, 14:05 UTC20h 54m
2026-07-14 CMA627 - Jul 14, 11:20 UTCJul 15, 11:15 UTC23h 54m
2026-07-14 CMA626 - Jul 14, 09:20 UTCJul 15, 09:15 UTC23h 54m
2026-07-14 CMA626 - Jul 14, 07:40 UTCJul 14, 23:55 UTC16h 14m
2026-07-13 CMA575 - Jul 13, 22:40 UTCJul 14, 03:35 UTC4h 55m
2026-07-13 CMA575 - Jul 13, 11:30 UTCJul 13, 11:45 UTC15m
2026-07-13 CMA574 - Jul 13, 07:15 UTCJul 13, 07:55 UTC40m
2026-07-12 CMA574 - Jul 12, 20:30 UTCJul 13, 00:20 UTC3h 50m
2026-07-12 CMA381 - Jul 12, 00:25 UTCJul 12, 10:45 UTC10h 20m
2026-07-11 CMA380 - Jul 11, 20:30 UTCJul 11, 20:40 UTC10m
2026-07-11 CMA380 - Jul 11, 07:05 UTCJul 11, 18:00 UTC10h 55m
2026-07-10 CMA561 - Jul 10, 22:55 UTCJul 11, 03:55 UTC5h 0m
2026-07-10 CMA561 - Jul 10, 12:00 UTCJul 10, 12:15 UTC15m
2026-07-10 CMA560 - Jul 10, 08:10 UTCJul 10, 08:50 UTC40m
2026-07-09 CMA560 - Jul 9, 21:15 UTCJul 10, 03:45 UTC6h 30m
2026-06-29 CMA046 - Jun 29, 02:20 UTCJun 29, 02:45 UTC25m
2026-06-28 ABB859 - Jun 28, 20:19 UTCJun 29, 00:34 UTC4h 15m
2026-06-28 ABB859 - Jun 28, 09:50 UTCJun 28, 10:04 UTC15m
2026-06-27 CMA576 - Jun 27, 19:24 UTCJun 28, 06:40 UTC11h 15m
2026-06-26 CMA841 - Jun 26, 22:55 UTCJun 27, 15:30 UTC16h 35m
2026-06-26 CMA841 - Jun 26, 20:04 UTCJun 27, 15:30 UTC19h 25m
2026-06-26 CMA841 - Jun 26, 17:19 UTCJun 27, 15:30 UTC22h 10m
2026-06-26 CMA841 - Jun 26, 16:09 UTCJun 27, 15:14 UTC23h 5m
2026-06-26 CMA841 - Jun 26, 08:15 UTCJun 26, 12:44 UTC4h 30m

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

Mode-S 39B225 frequently asked

What is Mode-S code 39B225?
39B225 is an ICAO 24-bit transponder address. Allocated to France. Assigned to F-HMRF.
Where is Mode-S 39B225 registered?
Mode-S code 39B225 is allocated to France (FR). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 39B225 broadcasting right now?
Yes. Mode-S 39B225 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 39B225, octal 16331045, decimal 3,781,157.
What flights does 39B225 operate?
Mode-S 39B225 has broadcast 20 distinct callsigns, including CMA841, CMA627, CMA626, CMA840, CMA731.