Apparatus

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sensors Mode-S transponder

39BDB4

ICAO 24-bit transponder address · allocated to France

Currently assigned to F-HPNU · AIRBUS A220-300

Hex
39BDB4
Octal
16336664
Decimal
3,784,116
Country
FR
Tail
F-HPNU
Type
BCS3
Broadcasting now · callsign AFR91HE · 25,000 ft
Flights observed
553
Distinct callsigns
20
Country
FR
Last broadcast
Jul 26, 19:30 UTC

Current position

39BDB4 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 39BDB4 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
AFR79BN - 11 2026-07-13
AFR69DF - 9 2026-07-12
AFR53EJ - 6 2026-07-05
AFR38YN Air France 6 2026-07-18
AFR22FA - 6 2026-07-18
AFR18UP - 6 2026-07-05
AFR1383 Air France 6 2026-07-22
AFR96EU - 5 2026-07-21
AFR68JQ - 5 2026-07-03
AFR57AU - 5 2026-07-21
AFR56QQ - 5 2026-06-23
AFR55QX - 5 2026-06-20
AFR49EC Air France 5 2026-05-21
AFR34UP - 5 2026-07-13
AFR32GL - 5 2026-07-19
AFR25LD - 5 2026-07-11
AFR15JJ - 5 2026-07-21
AFR1414 - 5 2026-07-16
AFR11QX - 5 2026-07-12
AFR1185 - 5 2026-07-13

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 AFR38LQ - Jul 26, 18:05 UTCJul 26, 19:30 UTC1h 25m
2026-07-26 AFR17RZ CDG → BER Jul 26, 15:30 UTCJul 26, 16:50 UTC1h 20m
2026-07-26 AFR35BR ZRH → CDG Jul 26, 13:30 UTCJul 26, 14:20 UTC50m
2026-07-26 AFR35BR ZRH → CDG Jul 26, 11:35 UTCJul 26, 12:20 UTC45m
2026-07-26 AFR43MU CDG → RVN Jul 26, 08:45 UTCJul 26, 09:30 UTC45m
2026-07-26 AFR91HE CDG → GVA Jul 26, 06:40 UTCJul 26, 07:25 UTC45m
2026-07-25 AFR1527 VCE → CDG Jul 25, 19:25 UTCJul 25, 20:55 UTC1h 30m
2026-07-25 AFR89KL FCO → CDG Jul 25, 16:50 UTCJul 25, 18:05 UTC1h 15m
2026-07-25 AFR1623 MUC → CDG Jul 25, 13:50 UTCJul 25, 14:55 UTC1h 5m
2026-07-25 AFR19DE CDG → MUC Jul 25, 11:15 UTCJul 25, 12:25 UTC1h 10m
2026-07-25 AFR93YY BCN → CDG Jul 25, 08:20 UTCJul 25, 09:50 UTC1h 30m
2026-07-25 AFR67WE CDG → BCN Jul 25, 05:35 UTCJul 25, 07:00 UTC1h 25m
2026-07-24 AFR57KV BGO → CDG Jul 24, 16:50 UTCJul 24, 18:40 UTC1h 50m
2026-07-24 AFR78HU NUE → CDG Jul 24, 13:50 UTCJul 24, 15:45 UTC1h 55m
2026-07-24 AFR85ZQ BGO → CDG Jul 24, 10:15 UTCJul 24, 12:10 UTC1h 55m
2026-07-24 AFR74UC CDG → BGO Jul 24, 07:20 UTCJul 24, 09:10 UTC1h 50m
2026-07-24 AFR13AB HAM → CDG Jul 24, 04:15 UTCJul 24, 05:25 UTC1h 10m
2026-07-23 00000000 HAM → HAM Jul 23, 20:35 UTCJul 23, 21:05 UTC30m
2026-07-23 AFR1610 CDG → HAM Jul 23, 19:00 UTCJul 23, 20:20 UTC1h 20m
2026-07-23 AFR57JG GVA → CDG Jul 23, 16:50 UTCJul 23, 17:40 UTC50m
2026-07-23 AFR97DR CDG → GVA Jul 23, 15:05 UTCJul 23, 15:50 UTC45m
2026-07-23 AFR37FA - Jul 23, 11:50 UTCJul 23, 13:00 UTC1h 10m
2026-07-23 AFR78HN CDG → NCE Jul 23, 09:15 UTCJul 23, 10:25 UTC1h 10m
2026-07-23 AFR1463 ARN → CDG Jul 23, 05:25 UTCJul 23, 07:20 UTC1h 55m
2026-07-22 AFR1462 CDG → ARN Jul 22, 19:05 UTCJul 22, 21:15 UTC2h 10m
2026-07-22 AFR17WA FCO → CDG Jul 22, 16:05 UTCJul 22, 17:50 UTC1h 45m
2026-07-22 AFR1304 CDG → FCO Jul 22, 12:55 UTCJul 22, 14:25 UTC1h 30m
2026-07-22 AFR1383 PRG → CDG Jul 22, 11:10 UTCJul 22, 11:35 UTC25m
2026-07-22 AFR48JA LIN → CDG Jul 22, 04:35 UTCJul 22, 05:25 UTC50m
2026-07-21 AFR1732 - Jul 21, 19:10 UTCJul 21, 20:10 UTC1h 0m
2026-07-21 AFR15JJ - Jul 21, 17:00 UTCJul 21, 17:40 UTC40m
2026-07-21 AFR57AU - Jul 21, 14:55 UTCJul 21, 15:40 UTC45m
2026-07-21 AFR32QK NTE → CDG Jul 21, 12:55 UTCJul 21, 13:35 UTC40m
2026-07-21 AFR96EU - Jul 21, 11:00 UTCJul 21, 11:45 UTC45m
2026-07-21 AFR1213 - Jul 21, 08:00 UTCJul 21, 09:15 UTC1h 15m
2026-07-21 AFR1212 CDG → LIN Jul 21, 05:30 UTCJul 21, 06:35 UTC1h 5m
2026-07-20 AFR38LQ - Jul 20, 18:00 UTCJul 20, 19:25 UTC1h 25m
2026-07-20 AFR17RZ - Jul 20, 15:30 UTCJul 20, 16:50 UTC1h 20m
2026-07-20 AFR23SB CDG → MAD Jul 20, 13:10 UTCJul 20, 14:00 UTC50m
2026-07-20 AFR23UQ CDG → BES Jul 20, 11:10 UTCJul 20, 12:05 UTC55m
2026-07-20 AFR43MU - Jul 20, 08:45 UTCJul 20, 09:40 UTC55m
2026-07-20 AFR91HE - Jul 20, 06:40 UTCJul 20, 07:30 UTC50m
2026-07-20 AFR77SB CDG → CFE Jul 20, 04:20 UTCJul 20, 05:30 UTC1h 10m
2026-07-19 AFR73MR - Jul 19, 20:50 UTCJul 19, 21:50 UTC1h 0m
2026-07-19 AFR1227 VCE → CDG Jul 19, 17:50 UTCJul 19, 19:20 UTC1h 30m
2026-07-19 AFR1226 CDG → VCE Jul 19, 15:35 UTCJul 19, 16:40 UTC1h 5m
2026-07-19 AFR63XU - Jul 19, 11:25 UTCJul 19, 13:30 UTC2h 5m
2026-07-19 AFR32GL - Jul 19, 07:55 UTCJul 19, 09:30 UTC1h 35m
2026-07-19 AFR53TN - Jul 19, 05:40 UTCJul 19, 06:20 UTC40m
2026-07-18 AFR49VJ BHX → CDG Jul 18, 19:30 UTCJul 18, 20:25 UTC55m

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

Mode-S 39BDB4 frequently asked

What is Mode-S code 39BDB4?
39BDB4 is an ICAO 24-bit transponder address. Allocated to France. Assigned to F-HPNU.
Where is Mode-S 39BDB4 registered?
Mode-S code 39BDB4 is allocated to France (FR). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 39BDB4 broadcasting right now?
Yes. Mode-S 39BDB4 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 39BDB4, octal 16336664, decimal 3,784,116.
What flights does 39BDB4 operate?
Mode-S 39BDB4 has broadcast 20 distinct callsigns, including AFR79BN, AFR69DF, AFR53EJ, AFR38YN, AFR22FA.