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 CMA575 · 34,000 ft
Flights observed
197
Distinct callsigns
20
Country
FR
Last broadcast
1h ago

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 - 43 2026-06-26
CMA627 - 43 2026-06-24
CMA626 - 21 2026-06-23
CMA840 - 14 2026-06-25
CMA731 - 14 2026-06-17
CMA575 - 12 2026-07-13
CMA574 - 9 2026-07-13
CMA730 - 8 2026-06-17
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
2026-07-13 CMA575 - Jul 13, 22:40 UTCJul 14, 01:15 UTC2h 35m
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
2026-06-25 CMA841 - Jun 25, 16:24 UTCJun 26, 12:44 UTC20h 20m
2026-06-25 CMA841 - Jun 25, 13:20 UTCJun 26, 12:44 UTC23h 25m
2026-06-25 CMA840 - Jun 25, 12:30 UTCJun 26, 11:14 UTC22h 45m
2026-06-24 CMA627 - Jun 24, 00:05 UTCJun 24, 14:00 UTC13h 55m
2026-06-23 CMA627 - Jun 23, 17:04 UTCJun 24, 13:14 UTC20h 10m
2026-06-23 CMA627 - Jun 23, 11:19 UTCJun 24, 10:35 UTC23h 15m
2026-06-23 CMA626 - Jun 23, 07:09 UTCJun 24, 00:25 UTC17h 15m
2026-06-21 CMA627 - Jun 21, 23:30 UTCJun 22, 14:05 UTC14h 35m
2026-06-21 CMA627 - Jun 21, 16:44 UTCJun 22, 14:05 UTC21h 20m
2026-06-21 CMA626 - Jun 21, 07:00 UTCJun 21, 23:50 UTC16h 50m
2026-06-20 CMA575 HKG → HKG Jun 20, 22:54 UTCJun 21, 03:40 UTC4h 45m
2026-06-20 CMA575 HKG → HKG Jun 20, 11:30 UTCJun 20, 11:44 UTC15m
2026-06-19 CMA574 CDG → HKG Jun 19, 20:55 UTCJun 20, 08:34 UTC11h 40m
2026-06-19 CMA627 - Jun 19, 09:19 UTCJun 19, 13:54 UTC4h 35m
2026-06-18 CMA627 - Jun 18, 13:50 UTCJun 19, 13:14 UTC23h 24m
2026-06-18 CMA626 - Jun 18, 06:45 UTCJun 18, 13:55 UTC7h 10m
2026-06-17 CMA731 - Jun 17, 11:10 UTCJun 18, 03:25 UTC16h 15m
2026-06-17 CMA730 - Jun 17, 07:45 UTCJun 17, 08:00 UTC15m
2026-06-16 CMA730 - Jun 16, 20:55 UTCJun 17, 07:10 UTC10h 15m
2026-06-15 CMA841 - Jun 15, 22:59 UTCJun 16, 03:50 UTC4h 50m
2026-06-15 CMA841 - Jun 15, 07:20 UTCJun 16, 03:50 UTC20h 30m
2026-06-15 CMA841 - Jun 15, 05:20 UTCJun 16, 03:50 UTC22h 30m
2026-06-15 CMA840 - Jun 15, 03:45 UTCJun 16, 03:15 UTC23h 30m
2026-06-14 CMA731 - Jun 14, 04:20 UTCJun 14, 18:35 UTC14h 15m
2026-06-13 CMA730 - Jun 13, 14:45 UTCJun 14, 00:45 UTC10h 0m
2026-06-13 CMA841 - Jun 13, 07:25 UTCJun 13, 12:15 UTC4h 50m
2026-06-12 CMA841 - Jun 12, 13:40 UTCJun 13, 12:15 UTC22h 34m
2026-06-12 CMA840 - Jun 12, 11:20 UTCJun 13, 11:15 UTC23h 54m
2026-06-12 CMA840 - Jun 12, 10:20 UTCJun 13, 08:40 UTC22h 19m
2026-06-11 CMA841 - Jun 11, 00:45 UTCJun 11, 18:25 UTC17h 40m

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.