sensors Mode-S transponder

39CF0E

ICAO 24-bit transponder address · allocated to France

Currently assigned to F-HTYO · AIRBUS A-350-900

Hex
39CF0E
Octal
16347416
Decimal
3,788,558
Country
FR
Tail
F-HTYO
Type
A359
No current signal · last broadcast 3h ago
Flights observed
103
Distinct callsigns
20
Country
FR
Last broadcast
3h ago

Last known position

Most recent position reported by Mode-S 39CF0E.

Country allocation

The ICAO 24-bit address 39CF0E 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
AFR477 Air France 13 2026-05-13
AFR468 Air France 11 2026-05-12
AFR407 Air France 11 2026-05-14
AFR406 Air France 7 2026-05-29
AFR253 Air France 7 2026-05-28
AFR722 Air France 5 2026-05-22
AFR258 Air France 4 2026-05-28
AFR173 Air France 4 2026-05-10
AFR570 Air France 3 2026-05-18
AFR551 Air France 3 2026-05-19
AFR174 Air France 3 2026-05-09
AFR863 Air France 2 2026-05-21
AFR468A Air France 2 2026-04-13
AFR435 Air France 2 2026-04-23
AFR4081 Air France 2 2026-04-20
AFR375G Air France 2 2026-05-25
AFR374F Air France 2 2026-05-25
AFR11E Air France 2 2026-05-11
AFR012 Air France 2 2026-05-10
AFR995 Air France 1 2026-05-02

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-29 AFR406 CDG → SCL May 29, 22:00 UTCMay 30, 10:10 UTC12h 10m
2026-05-28 AFR253 SGN → CDG May 28, 21:35 UTCMay 29, 15:45 UTC18h 10m
2026-05-28 AFR253 SGN → CDG May 28, 19:35 UTCMay 29, 15:45 UTC20h 10m
2026-05-28 AFR253 SGN → CDG May 28, 19:10 UTCMay 29, 15:45 UTC20h 35m
2026-05-28 AFR253 SGN → CDG May 28, 15:35 UTCMay 29, 15:30 UTC23h 55m
2026-05-28 AFR258 CDG → SGN May 28, 13:35 UTCMay 29, 13:30 UTC23h 55m
2026-05-28 AFR258 CDG → SGN May 28, 12:50 UTCMay 29, 11:30 UTC22h 40m
2026-05-27 AFR181 SIN → CDG May 27, 03:04 UTCMay 27, 16:35 UTC13h 30m
2026-05-26 AFR182 CDG → SIN May 26, 11:44 UTCMay 26, 23:45 UTC12h 0m
2026-05-25 AFR375G YVR → CDG May 25, 20:30 UTCMay 26, 05:15 UTC8h 45m
2026-05-25 AFR374F CDG → YVR May 25, 08:50 UTCMay 25, 18:10 UTC9h 20m
2026-05-24 AFR287 HND → CDG May 24, 04:35 UTCMay 24, 18:35 UTC14h 0m
2026-05-23 AFR286 CDG → HND May 23, 11:10 UTCMay 23, 23:45 UTC12h 36m
2026-05-22 AFR722 CDG → FIH May 22, 09:35 UTCMay 23, 05:00 UTC19h 24m
2026-05-22 AFR722 CDG → FIH May 22, 08:55 UTCMay 23, 05:00 UTC20h 4m
2026-05-21 AFR863 LFW → CDG May 21, 14:20 UTCMay 22, 04:55 UTC14h 35m
2026-05-21 AFR57J LAS → CDG May 21, 01:35 UTCMay 21, 10:55 UTC9h 20m
2026-05-20 AFR56T CDG → LAS May 20, 12:10 UTCMay 20, 22:35 UTC10h 25m
2026-05-19 AFR099 MIA → CDG May 19, 21:15 UTCMay 20, 06:25 UTC9h 11m
2026-05-19 AFR98G CDG → IAH May 19, 08:45 UTCMay 19, 18:45 UTC10h 0m
2026-05-19 AFR551 CAI → CDG May 19, 01:25 UTCMay 19, 05:35 UTC4h 10m
2026-05-18 AFR570 CDG → CAI May 18, 19:15 UTCMay 18, 22:45 UTC3h 30m
2026-05-16 AFR253 SGN → CDG May 16, 19:35 UTCMay 17, 15:31 UTC19h 55m
2026-05-16 AFR253 SGN → CDG May 16, 19:05 UTCMay 17, 15:31 UTC20h 25m
2026-05-16 AFR253 SGN → CDG May 16, 15:55 UTCMay 17, 15:31 UTC23h 35m
2026-05-16 AFR258 CDG → SGN May 16, 13:35 UTCMay 17, 13:31 UTC23h 55m
2026-05-16 AFR258 CDG → SGN May 16, 12:31 UTCMay 17, 11:30 UTC23h 0m
2026-05-15 AFR375G YVR → CDG May 15, 20:35 UTCMay 16, 05:25 UTC8h 50m
2026-05-15 AFR374F CDG → YVR May 15, 08:45 UTCMay 15, 18:10 UTC9h 24m
2026-05-14 AFR407 SCL → CDG May 14, 16:25 UTCMay 15, 03:50 UTC11h 25m
2026-05-14 AFR407 SCL → CDG May 14, 14:40 UTCMay 14, 14:55 UTC15m
2026-05-13 AFR406 CDG → SCL May 13, 21:35 UTCMay 13, 22:55 UTC1h 20m
2026-05-13 AFR477 CDG → PTY May 13, 03:40 UTCMay 13, 15:55 UTC12h 15m
2026-05-12 AFR468 CDG → CCS May 12, 11:50 UTCMay 13, 01:00 UTC13h 10m
2026-05-11 AFR11E JFK → CDG May 11, 06:00 UTCMay 11, 12:35 UTC6h 35m
2026-05-10 AFR012 CDG → JFK May 10, 18:55 UTCMay 11, 02:05 UTC7h 10m
2026-05-10 AFR173 MEX → CDG May 10, 05:50 UTCMay 10, 14:30 UTC8h 40m
2026-05-10 AFR173 MEX → CDG May 10, 04:29 UTCMay 10, 04:39 UTC10m
2026-05-09 AFR174 CDG → MEX May 9, 14:25 UTCMay 10, 02:10 UTC11h 45m
2026-05-08 AFR407 SCL → CDG May 8, 16:20 UTCMay 9, 03:20 UTC11h 0m
2026-05-08 AFR407 SCL → CDG May 8, 14:40 UTCMay 8, 14:55 UTC15m
2026-05-07 AFR406 CDG → SCL May 7, 21:40 UTCMay 8, 08:34 UTC10h 55m
2026-05-05 AFR407 SCL → CDG May 5, 16:25 UTCMay 6, 03:20 UTC10h 55m
2026-05-05 AFR407 SCL → CDG May 5, 14:45 UTCMay 5, 15:01 UTC15m
2026-05-04 AFR406 CDG → SCL May 4, 21:40 UTCMay 4, 23:05 UTC1h 25m
2026-05-04 AFR477 CDG → PTY May 4, 04:00 UTCMay 4, 15:50 UTC11h 50m
2026-05-03 AFR468 CDG → CCS May 3, 11:55 UTCMay 4, 01:40 UTC13h 45m
2026-05-02 AFR995 JNB → CDG May 2, 17:25 UTCMay 3, 04:00 UTC10h 34m
2026-05-01 AFR990 CDG → JNB May 1, 21:40 UTCMay 2, 07:45 UTC10h 5m
2026-05-01 AFR11E JFK → CDG May 1, 05:25 UTCMay 1, 12:05 UTC6h 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-HTYO page for operator, model, and routing details .

Mode-S 39CF0E frequently asked

What is Mode-S code 39CF0E?
39CF0E is an ICAO 24-bit transponder address. Allocated to France. Assigned to F-HTYO.
Where is Mode-S 39CF0E registered?
Mode-S code 39CF0E is allocated to France (FR). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 39CF0E broadcasting right now?
No active broadcast right now. Last signal was 3h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 39CF0E, octal 16347416, decimal 3,788,558.
What flights does 39CF0E operate?
Mode-S 39CF0E has broadcast 20 distinct callsigns, including AFR477, AFR468, AFR407, AFR406, AFR253.