Apparatus

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sensors Mode-S transponder

394C18

ICAO 24-bit transponder address · allocated to France

Currently assigned to F-GTAY · AIRBUS A-321

Hex
394C18
Octal
16246030
Decimal
3,755,032
Country
FR
Tail
F-GTAY
Type
A321
Broadcasting now · callsign AFR72BY · 26,250 ft
Flights observed
524
Distinct callsigns
20
Country
FR
Last broadcast
Jul 26, 20:10 UTC

Current position

394C18 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 394C18 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
AFR64UF - 16 2026-07-18
AFR12HN - 14 2026-07-19
AFR39MU - 11 2026-07-02
AFR22YN - 11 2026-07-02
AFR99WR Air France 10 2026-07-02
AFR88LA - 10 2026-07-02
AFR93YY - 9 2026-07-01
AFR67WE - 9 2026-07-01
AFR99MY Air France 8 2026-07-23
AFR58NR Air France 8 2026-07-23
AFR37EQ Air France 8 2026-07-23
AFR63QB Air France 7 2026-07-19
AFR42DT Air France 7 2026-06-08
AFR34EY Air France 7 2026-06-08
AFR27PQ - 7 2026-07-19
AFR24ZK Air France 7 2026-07-22
AFR17FP - 7 2026-06-29
AFR1349 - 7 2026-07-12
AFR97PD Air France 6 2026-06-13
AFR63TJ - 6 2026-06-28

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 AFR13DT CDG → NCE Jul 26, 19:05 UTCJul 26, 20:10 UTC1h 5m
2026-07-26 AFR12TX LYS → CDG Jul 26, 16:45 UTCJul 26, 17:35 UTC50m
2026-07-26 AFR55QX CDG → LYS Jul 26, 14:50 UTCJul 26, 15:40 UTC50m
2026-07-26 AFR41DU NCE → CDG Jul 26, 12:10 UTCJul 26, 13:30 UTC1h 20m
2026-07-26 AFR61AL CDG → NCE Jul 26, 09:30 UTCJul 26, 10:50 UTC1h 20m
2026-07-26 AFR39LA ZRH → CDG Jul 26, 04:25 UTCJul 26, 07:30 UTC3h 6m
2026-07-25 AFR42KK CDG → ATH Jul 25, 17:20 UTCJul 25, 20:00 UTC2h 40m
2026-07-25 AFR55AQ - Jul 25, 10:55 UTCJul 25, 14:30 UTC3h 35m
2026-07-25 AFR45BJ CDG → RHO Jul 25, 05:40 UTCJul 25, 08:55 UTC3h 15m
2026-07-24 AFR19LP ATH → CDG Jul 24, 16:15 UTCJul 24, 19:30 UTC3h 15m
2026-07-24 AFR15FE - Jul 24, 12:25 UTCJul 24, 15:00 UTC2h 35m
2026-07-24 AFR43MU CDG → RVN Jul 24, 09:15 UTCJul 24, 10:05 UTC50m
2026-07-24 AFR91HE CDG → GVA Jul 24, 06:50 UTCJul 24, 07:35 UTC45m
2026-07-24 AFR88NC BOD → CDG Jul 24, 04:20 UTCJul 24, 05:15 UTC55m
2026-07-23 AFR7440 CDG → BOD Jul 23, 19:00 UTCJul 23, 19:55 UTC55m
2026-07-23 AFR99MY LIS → CDG Jul 23, 15:25 UTCJul 23, 17:20 UTC1h 55m
2026-07-23 AFR37EQ CDG → LIS Jul 23, 11:45 UTCJul 23, 13:50 UTC2h 5m
2026-07-23 AFR43MU CDG → RVN Jul 23, 08:45 UTCJul 23, 09:40 UTC55m
2026-07-23 AFR91HE CDG → GVA Jul 23, 06:55 UTCJul 23, 07:35 UTC40m
2026-07-23 AFR58NR LYS → CDG Jul 23, 04:30 UTCJul 23, 05:20 UTC50m
2026-07-22 AFR24ZK CDG → LYS Jul 22, 19:10 UTCJul 22, 19:55 UTC45m
2026-07-22 AFR32CP - Jul 22, 15:40 UTCJul 22, 17:45 UTC2h 5m
2026-07-22 AFR68CM - Jul 22, 12:15 UTCJul 22, 14:20 UTC2h 5m
2026-07-22 AFR39SV BER → CDG Jul 22, 11:10 UTCJul 22, 11:25 UTC15m
2026-07-22 AFR49LA NCE → CDG Jul 22, 04:10 UTCJul 22, 05:25 UTC1h 15m
2026-07-21 AFR27QN CDG → NCE Jul 21, 18:40 UTCJul 21, 19:40 UTC1h 0m
2026-07-21 AFR42VQ NCE → CDG Jul 21, 14:40 UTCJul 21, 16:00 UTC1h 20m
2026-07-21 AFR51PD CDG → NCE Jul 21, 12:30 UTCJul 21, 13:35 UTC1h 5m
2026-07-21 AFR31TV - Jul 21, 09:40 UTCJul 21, 10:50 UTC1h 10m
2026-07-21 AFR26AP - Jul 21, 06:50 UTCJul 21, 08:00 UTC1h 10m
2026-07-20 AFR99MY LIS → CDG Jul 20, 16:30 UTCJul 20, 18:25 UTC1h 55m
2026-07-20 AFR37EQ CDG → LIS Jul 20, 12:40 UTCJul 20, 15:10 UTC2h 30m
2026-07-20 AFR63YM TLS → CDG Jul 20, 09:05 UTCJul 20, 10:05 UTC1h 0m
2026-07-20 AFR96TP CDG → TLS Jul 20, 06:55 UTCJul 20, 07:55 UTC1h 0m
2026-07-20 AFR27ZU TLS → CDG Jul 20, 04:15 UTCJul 20, 05:20 UTC1h 5m
2026-07-19 AFR7422 - Jul 19, 19:25 UTCJul 19, 20:30 UTC1h 5m
2026-07-19 AFR76QE - Jul 19, 17:05 UTCJul 19, 18:10 UTC1h 5m
2026-07-19 AFR93SM - Jul 19, 14:35 UTCJul 19, 15:30 UTC55m
2026-07-19 AFR63QB FCO → CDG Jul 19, 10:45 UTCJul 19, 12:30 UTC1h 45m
2026-07-19 AFR27PQ - Jul 19, 07:30 UTCJul 19, 09:00 UTC1h 30m
2026-07-19 AFR12HN - Jul 19, 04:25 UTCJul 19, 05:55 UTC1h 30m
2026-07-18 AFR64UF - Jul 18, 19:40 UTCJul 18, 21:00 UTC1h 20m
2026-07-18 AFR32FK OSL → CDG Jul 18, 16:05 UTCJul 18, 18:05 UTC2h 0m
2026-07-18 AFR59CH - Jul 18, 12:55 UTCJul 18, 14:45 UTC1h 50m
2026-07-18 AFR13VP - Jul 18, 10:00 UTCJul 18, 11:00 UTC1h 0m
2026-07-18 AFR29FN - Jul 18, 07:55 UTCJul 18, 08:55 UTC1h 0m
2026-07-18 AFR51JG MXP → CDG Jul 18, 05:05 UTCJul 18, 06:10 UTC1h 5m
2026-07-17 AFR35BM CDG → MXP Jul 17, 21:25 UTCJul 17, 22:20 UTC55m
2026-07-17 AFR99MY LIS → CDG Jul 17, 16:55 UTCJul 17, 18:44 UTC1h 50m
2026-07-17 AFR37EQ - Jul 17, 13:10 UTCJul 17, 15:35 UTC2h 25m

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

Mode-S 394C18 frequently asked

What is Mode-S code 394C18?
394C18 is an ICAO 24-bit transponder address. Allocated to France. Assigned to F-GTAY.
Where is Mode-S 394C18 registered?
Mode-S code 394C18 is allocated to France (FR). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 394C18 broadcasting right now?
Yes. Mode-S 394C18 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 394C18, octal 16246030, decimal 3,755,032.
What flights does 394C18 operate?
Mode-S 394C18 has broadcast 20 distinct callsigns, including AFR64UF, AFR12HN, AFR39MU, AFR22YN, AFR99WR.