sensors Mode-S transponder

39E681

ICAO 24-bit transponder address · allocated to France

Currently assigned to F-HZUB · AIRBUS A220-300

Hex
39E681
Octal
16363201
Decimal
3,794,561
Country
FR
Tail
F-HZUB
Type
BCS3
No current signal · last broadcast Jul 22, 19:40 UTC
Flights observed
224
Distinct callsigns
20
Country
FR
Last broadcast
Jul 22, 19:40 UTC

Last known position

Most recent position reported by Mode-S 39E681.

Country allocation

The ICAO 24-bit address 39E681 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
AFR26RR - 5 2026-07-19
AFR18FE - 5 2026-07-19
AFR92ZN - 3 2026-07-13
AFR91AG Air France 3 2026-05-23
AFR85ZQ - 3 2026-07-20
AFR79BN Air France 3 2026-05-18
AFR76QE - 3 2026-05-18
AFR74UC - 3 2026-07-20
AFR69DF - 3 2026-05-17
AFR1235 - 3 2026-07-13
AFR94FR Air France 2 2026-05-24
AFR93SM Air France 2 2026-05-18
AFR88JK - 2 2026-05-22
AFR79NB Air France 2 2026-05-18
AFR79CJ - 2 2026-07-18
AFR78RM Air France 2 2026-05-05
AFR77ST - 2 2026-07-18
AFR77SB - 2 2026-07-13
AFR77JX - 2 2026-07-15
AFR76RE Air France 2 2026-05-20

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-22 AFR38CX - Jul 22, 18:50 UTCJul 22, 19:40 UTC50m
2026-07-22 AFR44SZ - Jul 22, 16:55 UTCJul 22, 17:35 UTC40m
2026-07-22 AFR1649 - Jul 22, 14:05 UTCJul 22, 15:35 UTC1h 30m
2026-07-22 AFR75SH CDG → BCN Jul 22, 11:35 UTCJul 22, 12:55 UTC1h 20m
2026-07-21 AFR49BA - Jul 21, 17:55 UTCJul 21, 20:20 UTC2h 25m
2026-07-21 AFR31CZ - Jul 21, 14:10 UTCJul 21, 16:40 UTC2h 30m
2026-07-21 AFR1687 EDI → CDG Jul 21, 11:10 UTCJul 21, 12:30 UTC1h 20m
2026-07-21 AFR57FH CDG → EDI Jul 21, 08:15 UTCJul 21, 09:35 UTC1h 20m
2026-07-21 AFR53TN - Jul 21, 05:35 UTCJul 21, 06:15 UTC40m
2026-07-20 AFR49VJ BHX → CDG Jul 20, 19:20 UTCJul 20, 20:15 UTC55m
2026-07-20 AFR1823 - Jul 20, 16:25 UTCJul 20, 17:40 UTC1h 15m
2026-07-20 AFR1822 - Jul 20, 14:05 UTCJul 20, 15:10 UTC1h 5m
2026-07-20 AFR85ZQ - Jul 20, 10:45 UTCJul 20, 12:35 UTC1h 50m
2026-07-20 AFR74UC - Jul 20, 07:55 UTCJul 20, 09:40 UTC1h 45m
2026-07-20 AFR16TL BLQ → CDG Jul 20, 05:10 UTCJul 20, 06:35 UTC1h 25m
2026-07-19 AFR75NZ - Jul 19, 19:45 UTCJul 19, 20:55 UTC1h 10m
2026-07-19 AFR26RR VIE → CDG Jul 19, 16:40 UTCJul 19, 18:30 UTC1h 50m
2026-07-19 AFR18FE - Jul 19, 14:00 UTCJul 19, 15:25 UTC1h 25m
2026-07-19 AFR11QX - Jul 19, 10:20 UTCJul 19, 11:55 UTC1h 35m
2026-07-18 AFR25LD NAP → CDG Jul 18, 18:55 UTCJul 18, 20:20 UTC1h 25m
2026-07-18 AFR71FP - Jul 18, 15:05 UTCJul 18, 17:15 UTC2h 10m
2026-07-18 AFR77ST - Jul 18, 11:10 UTCJul 18, 13:40 UTC2h 30m
2026-07-18 AFR79CJ LHR → CDG Jul 18, 08:15 UTCJul 18, 08:55 UTC40m
2026-07-18 AFR59NM CDG → LHR Jul 18, 05:45 UTCJul 18, 06:40 UTC55m
2026-07-17 AFR1185 - Jul 17, 14:50 UTCJul 17, 20:35 UTC5h 45m
2026-07-17 AFR85ZQ BGO → CDG Jul 17, 10:10 UTCJul 17, 12:04 UTC1h 55m
2026-07-17 AFR74UC CDG → BGO Jul 17, 07:20 UTCJul 17, 09:10 UTC1h 50m
2026-07-17 AFR16TL BLQ → CDG Jul 17, 04:29 UTCJul 17, 05:55 UTC1h 25m
2026-07-16 AFR75NZ - Jul 16, 20:25 UTCJul 16, 21:40 UTC1h 15m
2026-07-16 AFR31LY - Jul 16, 16:19 UTCJul 16, 17:40 UTC1h 20m
2026-07-16 AFR31UA - Jul 16, 13:54 UTCJul 16, 15:00 UTC1h 5m
2026-07-16 AFR85ZQ BGO → CDG Jul 16, 10:20 UTCJul 16, 12:14 UTC1h 55m
2026-07-16 AFR74UC - Jul 16, 07:25 UTCJul 16, 09:10 UTC1h 45m
2026-07-16 AFR48JA - Jul 16, 04:35 UTCJul 16, 05:45 UTC1h 10m
2026-07-15 AFR1732 - Jul 15, 19:35 UTCJul 15, 20:40 UTC1h 5m
2026-07-15 AFR45KB - Jul 15, 16:40 UTCJul 15, 18:10 UTC1h 30m
2026-07-15 AFR77JX CDG → CPH Jul 15, 14:05 UTCJul 15, 15:30 UTC1h 25m
2026-07-15 AFR88FG - Jul 15, 09:50 UTCJul 15, 12:30 UTC2h 40m
2026-07-15 AFR18YX - Jul 15, 06:10 UTCJul 15, 08:20 UTC2h 10m
2026-07-14 AFR59VC - Jul 14, 16:35 UTCJul 14, 18:40 UTC2h 5m
2026-07-14 AFR61QR - Jul 14, 13:15 UTCJul 14, 15:30 UTC2h 15m
2026-07-14 AFR11NQ BOD → CDG Jul 14, 10:10 UTCJul 14, 11:00 UTC50m
2026-07-14 AFR45LB - Jul 14, 08:05 UTCJul 14, 09:05 UTC1h 0m
2026-07-14 AFR87JD - Jul 14, 04:20 UTCJul 14, 06:30 UTC2h 10m
2026-07-13 AFR65JZ - Jul 13, 17:45 UTCJul 13, 19:25 UTC1h 40m
2026-07-13 AFR1235 - Jul 13, 13:35 UTCJul 13, 15:05 UTC1h 30m
2026-07-13 AFR92ZN - Jul 13, 11:15 UTCJul 13, 12:25 UTC1h 10m
2026-07-13 AFR53UR - Jul 13, 08:50 UTCJul 13, 09:35 UTC45m
2026-07-13 AFR49HG - Jul 13, 06:50 UTCJul 13, 07:40 UTC50m
2026-07-13 AFR77SB - Jul 13, 04:15 UTCJul 13, 05:31 UTC1h 15m

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

Mode-S 39E681 frequently asked

What is Mode-S code 39E681?
39E681 is an ICAO 24-bit transponder address. Allocated to France. Assigned to F-HZUB.
Where is Mode-S 39E681 registered?
Mode-S code 39E681 is allocated to France (FR). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 39E681 broadcasting right now?
No active broadcast right now. Last signal was Jul 22, 19:40 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 39E681, octal 16363201, decimal 3,794,561.
What flights does 39E681 operate?
Mode-S 39E681 has broadcast 20 distinct callsigns, including AFR26RR, AFR18FE, AFR92ZN, AFR91AG, AFR85ZQ.