Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

39CF0B

ICAO 24-bit transponder address · allocated to France

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

Hex
39CF0B
Octal
16347413
Decimal
3,788,555
Country
FR
Tail
F-HTYL
Type
A359
No current signal · last broadcast 2h ago
Flights observed
173
Distinct callsigns
20
Country
FR
Last broadcast
2h ago

Last known position

Most recent position reported by Mode-S 39CF0B.

Country allocation

The ICAO 24-bit address 39CF0B 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
AFR435 - 13 2026-07-07
AFR436 - 10 2026-07-06
AFR491 Air France 8 2026-05-25
AFR57J - 6 2026-07-05
AFR332 - 6 2026-06-27
AFR331E - 6 2026-06-28
AFR56T - 5 2026-07-04
AFR468 Air France 5 2026-04-17
AFR431 Air France 5 2026-05-30
AFR375G - 5 2026-06-29
AFR374F - 5 2026-06-29
AFR194 Air France 5 2026-04-16
AFR490 Air France 4 2026-05-16
AFR407 - 4 2026-07-09
AFR253 Air France 4 2026-04-28
AFR191 Air France 4 2026-04-17
AFR11E Air France 4 2026-06-04
AFR097 - 4 2026-07-12
AFR096 - 4 2026-07-11
AFR012 Air France 4 2026-06-03

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 AFR4081 YUL → CDG Jul 14, 05:50 UTCJul 14, 12:10 UTC6h 20m
2026-07-13 AFR348F - Jul 13, 21:00 UTCJul 14, 03:35 UTC6h 35m
2026-07-13 AFR199 - Jul 13, 05:45 UTCJul 13, 07:01 UTC1h 15m
2026-07-12 AFR198 - Jul 12, 15:25 UTCJul 13, 03:01 UTC11h 35m
2026-07-12 AFR097 - Jul 12, 03:25 UTCJul 12, 11:25 UTC8h 0m
2026-07-11 AFR096 - Jul 11, 15:20 UTCJul 11, 23:55 UTC8h 35m
2026-07-11 AFR179 - Jul 11, 01:40 UTCJul 11, 11:45 UTC10h 5m
2026-07-10 AFR178 - Jul 10, 11:50 UTCJul 10, 22:45 UTC10h 55m
2026-07-09 AFR407 - Jul 9, 17:40 UTCJul 10, 03:45 UTC10h 5m
2026-07-09 AFR407 - Jul 9, 14:50 UTCJul 9, 15:00 UTC10m
2026-07-08 AFR406 - Jul 8, 22:00 UTCJul 9, 01:15 UTC3h 15m
2026-07-08 AFR199 - Jul 8, 06:00 UTCJul 8, 18:25 UTC12h 25m
2026-07-07 AFR198 - Jul 7, 15:45 UTCJul 8, 03:25 UTC11h 40m
2026-07-07 AFR435 - Jul 7, 11:25 UTCJul 7, 12:55 UTC1h 30m
2026-07-06 AFR436 - Jul 6, 14:00 UTCJul 6, 23:40 UTC9h 40m
2026-07-06 AFR097 - Jul 6, 02:55 UTCJul 6, 10:55 UTC8h 0m
2026-07-05 AFR096 - Jul 5, 15:00 UTCJul 5, 23:45 UTC8h 45m
2026-07-05 AFR57J - Jul 5, 01:30 UTCJul 5, 11:15 UTC9h 45m
2026-07-04 AFR56T - Jul 4, 12:30 UTCJul 4, 22:50 UTC10h 20m
2026-07-03 AFR934 - Jul 3, 09:45 UTCJul 3, 13:10 UTC3h 25m
2026-07-02 AFR337P SEA → CDG Jul 2, 21:30 UTCJul 3, 06:35 UTC9h 5m
2026-07-02 AFR338 - Jul 2, 09:15 UTCJul 2, 18:35 UTC9h 20m
2026-07-01 AFR384V - Jul 1, 21:30 UTCJul 1, 22:40 UTC1h 10m
2026-06-30 AFR376V CDG → HHN Jun 30, 08:15 UTCJun 30, 09:15 UTC1h 0m
2026-06-29 AFR375G - Jun 29, 20:30 UTCJun 30, 05:30 UTC9h 1m
2026-06-29 AFR374F - Jun 29, 09:05 UTCJun 29, 17:59 UTC8h 55m
2026-06-28 AFR333F BOS → CDG Jun 28, 21:34 UTCJun 29, 03:34 UTC6h 0m
2026-06-28 AFR334M - Jun 28, 17:25 UTCJun 28, 18:49 UTC1h 25m
2026-06-28 AFR334M - Jun 28, 11:55 UTCJun 28, 13:34 UTC1h 40m
2026-06-28 AFR331E - Jun 28, 02:05 UTCJun 28, 08:05 UTC6h 0m
2026-06-27 AFR332 - Jun 27, 16:30 UTCJun 27, 23:29 UTC7h 0m
2026-06-21 AFR380V - Jun 21, 18:35 UTCJun 22, 04:44 UTC10h 10m
2026-06-18 AFR174 - Jun 18, 14:35 UTCJun 19, 01:59 UTC11h 24m
2026-06-17 AFR465 SSA → CDG Jun 17, 10:50 UTCJun 18, 06:20 UTC19h 30m
2026-06-17 AFR476 CDG → HAV Jun 17, 09:35 UTCJun 18, 06:20 UTC20h 45m
2026-06-16 AFR579 - Jun 16, 16:15 UTCJun 17, 06:30 UTC14h 16m
2026-06-16 AFR435 - Jun 16, 03:00 UTCJun 16, 12:55 UTC9h 55m
2026-06-15 AFR436 - Jun 15, 14:05 UTCJun 16, 00:29 UTC10h 25m
2026-06-15 AFR331E BOS → CDG Jun 15, 02:15 UTCJun 15, 08:10 UTC5h 55m
2026-06-14 AFR332 CDG → BOS Jun 14, 15:55 UTCJun 14, 22:45 UTC6h 50m
2026-06-14 AFR57J LAS → CDG Jun 14, 05:50 UTCJun 14, 11:00 UTC5h 10m
2026-06-14 AFR57J LAS → CDG Jun 14, 01:20 UTCJun 14, 05:45 UTC4h 25m
2026-06-13 AFR56T CDG → LAS Jun 13, 12:05 UTCJun 13, 22:15 UTC10h 10m
2026-06-12 AFR995 WKF → CDG Jun 12, 17:15 UTCJun 13, 03:40 UTC10h 25m
2026-06-11 AFR990 CDG → JNB Jun 11, 21:35 UTCJun 12, 07:40 UTC10h 5m
2026-06-11 AFR199 BKK → CDG Jun 11, 04:50 UTCJun 11, 17:00 UTC12h 10m
2026-06-10 AFR198 CDG → BKK Jun 10, 15:30 UTCJun 11, 02:15 UTC10h 45m
2026-06-10 AFR097 MCO → CDG Jun 10, 03:00 UTCJun 10, 11:00 UTC8h 0m
2026-06-09 AFR096 CDG → MCO Jun 9, 15:00 UTCJun 9, 23:50 UTC8h 50m
2026-06-08 AFR579 CKY → CDG Jun 8, 16:40 UTCJun 9, 06:35 UTC13h 55m

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

Mode-S 39CF0B frequently asked

What is Mode-S code 39CF0B?
39CF0B is an ICAO 24-bit transponder address. Allocated to France. Assigned to F-HTYL.
Where is Mode-S 39CF0B registered?
Mode-S code 39CF0B is allocated to France (FR). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 39CF0B broadcasting right now?
No active broadcast right now. Last signal was 2h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 39CF0B, octal 16347413, decimal 3,788,555.
What flights does 39CF0B operate?
Mode-S 39CF0B has broadcast 20 distinct callsigns, including AFR435, AFR436, AFR491, AFR57J, AFR332.