Apparatus

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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
Broadcasting now · callsign AFR348F · 7,325 ft
Flights observed
184
Distinct callsigns
20
Country
FR
Last broadcast
8h ago

Current position

39CF0E is currently broadcasting. Map zoomed to live position.

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
AFR407 - 21 2026-06-29
AFR477 Air France 13 2026-05-13
AFR468 Air France 11 2026-05-12
AFR406 - 11 2026-06-28
AFR253 Air France 11 2026-06-04
AFR178 - 6 2026-07-13
AFR173 - 6 2026-07-13
AFR722 Air France 5 2026-05-22
AFR258 Air France 5 2026-06-04
AFR375G - 4 2026-06-14
AFR374F - 4 2026-06-14
AFR179 - 4 2026-07-07
AFR174 - 4 2026-06-26
AFR097 - 4 2026-07-09
AFR096 - 4 2026-07-08
AFR570 Air France 3 2026-05-18
AFR551 Air France 3 2026-05-19
AFR334M - 3 2026-07-03
AFR333F - 3 2026-07-03
AFR332 Air France 3 2026-06-11

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-13 AFR579A - Jul 13, 23:35 UTCJul 14, 08:55 UTC9h 20m
2026-07-13 AFR578 - Jul 13, 18:35 UTCJul 13, 21:15 UTC2h 40m
2026-07-13 AFR173 - Jul 13, 04:45 UTCJul 13, 15:00 UTC10h 15m
2026-07-13 AFR178 - Jul 13, 01:35 UTCJul 13, 01:50 UTC15m
2026-07-12 AFR178 - Jul 12, 11:55 UTCJul 12, 22:50 UTC10h 55m
2026-07-12 AFR33J - Jul 12, 00:20 UTCJul 12, 08:10 UTC7h 50m
2026-07-11 AFR32J - Jul 11, 12:45 UTCJul 11, 21:40 UTC8h 55m
2026-07-09 AFR579 - Jul 9, 16:25 UTCJul 10, 06:30 UTC14h 5m
2026-07-09 AFR097 - Jul 9, 04:40 UTCJul 9, 12:40 UTC8h 0m
2026-07-08 AFR096 - Jul 8, 15:10 UTCJul 9, 00:00 UTC8h 50m
2026-07-08 AFR097 - Jul 8, 03:40 UTCJul 8, 11:55 UTC8h 15m
2026-07-07 AFR096 - Jul 7, 16:10 UTCJul 8, 01:05 UTC8h 55m
2026-07-07 AFR179 - Jul 7, 03:15 UTCJul 7, 13:30 UTC10h 15m
2026-07-06 AFR178 - Jul 6, 13:00 UTCJul 7, 00:10 UTC11h 10m
2026-07-06 AFR349 - Jul 6, 02:55 UTCJul 6, 08:55 UTC6h 0m
2026-07-05 AFR348F - Jul 5, 16:50 UTCJul 5, 23:40 UTC6h 50m
2026-07-04 AFR511 - Jul 4, 22:15 UTCJul 5, 08:35 UTC10h 20m
2026-07-04 AFR512 - Jul 4, 08:50 UTCJul 4, 19:50 UTC11h 0m
2026-07-03 AFR333F BOS → CDG Jul 3, 21:40 UTCJul 4, 03:45 UTC6h 5m
2026-07-03 AFR334M - Jul 3, 11:55 UTCJul 3, 18:55 UTC7h 0m
2026-07-02 AFR579 - Jul 2, 16:00 UTCJul 3, 07:10 UTC15h 10m
2026-07-02 AFR097 - Jul 2, 02:55 UTCJul 2, 11:05 UTC8h 10m
2026-07-01 AFR096 - Jul 1, 15:05 UTCJul 2, 00:05 UTC9h 0m
2026-07-01 AFR179 - Jul 1, 01:35 UTCJul 1, 11:55 UTC10h 20m
2026-06-30 AFR178 - Jun 30, 11:40 UTCJun 30, 22:30 UTC10h 50m
2026-06-29 AFR407 - Jun 29, 16:15 UTCJun 30, 03:35 UTC11h 21m
2026-06-29 AFR407 - Jun 29, 14:34 UTCJun 29, 14:44 UTC10m
2026-06-28 AFR406 - Jun 28, 21:40 UTCJun 29, 08:19 UTC10h 40m
2026-06-27 AFR684 CDG → RUH Jun 27, 22:04 UTCJun 28, 12:09 UTC14h 5m
2026-06-27 AFR173 - Jun 27, 05:19 UTCJun 27, 15:05 UTC9h 45m
2026-06-26 AFR174 - Jun 26, 14:39 UTCJun 27, 01:59 UTC11h 20m
2026-06-26 AFR097 - Jun 26, 03:05 UTCJun 26, 11:05 UTC8h 0m
2026-06-25 AFR096 - Jun 25, 15:44 UTCJun 26, 00:30 UTC8h 45m
2026-06-25 AFR375V CDG → HHN Jun 25, 11:10 UTCJun 25, 12:15 UTC1h 5m
2026-06-23 AFR376V CDG → HHN Jun 23, 06:24 UTCJun 23, 07:19 UTC55m
2026-06-22 AFR333F BOS → CDG Jun 22, 21:54 UTCJun 23, 03:54 UTC6h 0m
2026-06-22 AFR334M CDG → BOS Jun 22, 11:44 UTCJun 22, 18:44 UTC7h 0m
2026-06-21 AFR415 - Jun 21, 23:14 UTCJun 22, 07:25 UTC8h 10m
2026-06-21 AFR416 - Jun 21, 12:19 UTCJun 21, 20:54 UTC8h 35m
2026-06-20 AFR069 PHX → CDG Jun 20, 22:39 UTCJun 21, 08:25 UTC9h 45m
2026-06-20 AFR068 - Jun 20, 09:24 UTCJun 20, 19:49 UTC10h 25m
2026-06-19 AFR337P KEH → CDG Jun 19, 20:49 UTCJun 20, 05:59 UTC9h 10m
2026-06-19 AFR338 - Jun 19, 08:40 UTCJun 19, 17:49 UTC9h 10m
2026-06-18 AFR199 - Jun 18, 04:50 UTCJun 18, 16:55 UTC12h 5m
2026-06-17 AFR198 - Jun 17, 15:05 UTCJun 18, 01:55 UTC10h 50m
2026-06-17 AFR53X IAD → CDG Jun 17, 01:55 UTCJun 17, 08:25 UTC6h 30m
2026-06-16 AFR52X CDG → IAD Jun 16, 15:24 UTCJun 16, 23:05 UTC7h 41m
2026-06-16 AFR179 - Jun 16, 02:04 UTCJun 16, 11:49 UTC9h 45m
2026-06-15 AFR178 - Jun 15, 11:54 UTCJun 15, 23:04 UTC11h 10m
2026-06-14 AFR375G - Jun 14, 20:45 UTCJun 15, 05:45 UTC8h 59m

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?
Yes. Mode-S 39CF0E is currently airborne.
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 AFR407, AFR477, AFR468, AFR406, AFR253.