Apparatus

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sensors Mode-S transponder

39856F

ICAO 24-bit transponder address · allocated to France

Currently assigned to F-HBLP · EMBRAER ERJ-190-100

Hex
39856F
Octal
16302557
Decimal
3,769,711
Country
FR
Tail
F-HBLP
Type
E190
Broadcasting now · callsign KLM1423 · 35,000 ft
Flights observed
230
Distinct callsigns
20
Country
FR
Last broadcast
2h ago

Current position

39856F is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 39856F 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
KLM1850 KLM Royal Dutch Airlines 9 2026-05-16
KLM96C KLM Royal Dutch Airlines 8 2026-05-15
KLM81Y KLM Royal Dutch Airlines 8 2026-05-30
KLM60Z KLM Royal Dutch Airlines 8 2026-05-30
KLM52N KLM Royal Dutch Airlines 8 2026-05-30
KLM49E KLM Royal Dutch Airlines 8 2026-05-16
KLM97J KLM Royal Dutch Airlines 7 2026-05-29
KLM44T KLM Royal Dutch Airlines 7 2026-05-29
KLM43R KLM Royal Dutch Airlines 7 2026-05-15
KLM1849 KLM Royal Dutch Airlines 7 2026-05-16
KLM1423 KLM Royal Dutch Airlines 7 2026-05-29
KLM26F KLM Royal Dutch Airlines 4 2026-05-15
AFR89YP Air France 4 2026-05-20
AFR64CA Air France 4 2026-04-30
AFR7395 Air France 3 2026-05-21
AFR7394 Air France 3 2026-05-20
AFR38JF - 3 2026-05-01
AFR15CJ Air France 3 2026-05-20
AFR94UK Air France 2 2026-05-03
AFR94SM Air France 2 2026-05-17

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-30 KLM60Z NTE → AMS May 30, 10:20 UTCMay 30, 11:25 UTC1h 5m
2026-05-30 KLM81Y AMS → NTE May 30, 08:05 UTCMay 30, 09:15 UTC1h 10m
2026-05-30 KLM52N NTE → AMS May 30, 04:35 UTCMay 30, 05:45 UTC1h 10m
2026-05-29 KLM97J AMS → NTE May 29, 19:05 UTCMay 29, 20:20 UTC1h 15m
2026-05-29 KLM44T NTE → AMS May 29, 15:55 UTCMay 29, 17:05 UTC1h 10m
2026-05-29 KLM1423 AMS → NTE May 29, 13:25 UTCMay 29, 14:40 UTC1h 15m
2026-05-29 KLM60Z NTE → AMS May 29, 10:20 UTCMay 29, 11:30 UTC1h 10m
2026-05-29 KLM81Y AMS → NTE May 29, 08:00 UTCMay 29, 09:10 UTC1h 10m
2026-05-29 KLM52N NTE → AMS May 29, 04:35 UTCMay 29, 05:50 UTC1h 15m
2026-05-28 KLM97J AMS → NTE May 28, 19:05 UTCMay 28, 20:15 UTC1h 10m
2026-05-28 KLM44T NTE → AMS May 28, 15:30 UTCMay 28, 16:40 UTC1h 10m
2026-05-28 KLM1423 AMS → NTE May 28, 13:15 UTCMay 28, 14:20 UTC1h 5m
2026-05-28 KLM60Z NTE → AMS May 28, 10:20 UTCMay 28, 11:25 UTC1h 5m
2026-05-28 KLM81Y AMS → NTE May 28, 08:10 UTCMay 28, 09:20 UTC1h 10m
2026-05-28 KLM52N NTE → AMS May 28, 04:25 UTCMay 28, 05:35 UTC1h 10m
2026-05-27 KLM97J AMS → NTE May 27, 18:55 UTCMay 27, 20:20 UTC1h 25m
2026-05-27 KLM44T NTE → AMS May 27, 15:40 UTCMay 27, 16:45 UTC1h 5m
2026-05-27 KLM1423 AMS → NTE May 27, 13:35 UTCMay 27, 14:45 UTC1h 10m
2026-05-27 KLM60Z NTE → AMS May 27, 10:20 UTCMay 27, 11:30 UTC1h 10m
2026-05-27 KLM81Y AMS → NTE May 27, 08:05 UTCMay 27, 09:30 UTC1h 25m
2026-05-27 KLM52N NTE → AMS May 27, 04:55 UTCMay 27, 05:59 UTC1h 5m
2026-05-26 KLM97J AMS → NTE May 26, 18:50 UTCMay 26, 20:00 UTC1h 10m
2026-05-26 KLM44T NTE → AMS May 26, 15:29 UTCMay 26, 16:35 UTC1h 5m
2026-05-26 KLM1423 AMS → NTE May 26, 13:10 UTCMay 26, 14:20 UTC1h 10m
2026-05-26 KLM60Z NTE → AMS May 26, 10:29 UTCMay 26, 11:34 UTC1h 5m
2026-05-26 KLM81Y AMS → NTE May 26, 08:04 UTCMay 26, 09:25 UTC1h 20m
2026-05-26 KLM52N NTE → AMS May 26, 04:30 UTCMay 26, 05:40 UTC1h 10m
2026-05-25 KLM97J AMS → NTE May 25, 19:10 UTCMay 25, 20:24 UTC1h 15m
2026-05-25 KLM44T NTE → AMS May 25, 15:50 UTCMay 25, 17:00 UTC1h 10m
2026-05-25 KLM1423 AMS → NTE May 25, 13:35 UTCMay 25, 14:45 UTC1h 10m
2026-05-25 KLM60Z NTE → AMS May 25, 10:25 UTCMay 25, 11:35 UTC1h 10m
2026-05-25 KLM81Y AMS → NTE May 25, 08:20 UTCMay 25, 09:30 UTC1h 10m
2026-05-25 KLM52N NTE → AMS May 25, 04:30 UTCMay 25, 05:35 UTC1h 5m
2026-05-24 KLM97J AMS → NTE May 24, 18:50 UTCMay 24, 20:10 UTC1h 20m
2026-05-24 KLM44T NTE → AMS May 24, 15:40 UTCMay 24, 16:50 UTC1h 10m
2026-05-24 KLM1423 AMS → NTE May 24, 13:30 UTCMay 24, 14:55 UTC1h 25m
2026-05-24 KLM60Z NTE → AMS May 24, 10:20 UTCMay 24, 11:35 UTC1h 15m
2026-05-24 KLM81Y AMS → NTE May 24, 07:55 UTCMay 24, 09:05 UTC1h 10m
2026-05-24 KLM52N NTE → AMS May 24, 04:35 UTCMay 24, 05:40 UTC1h 5m
2026-05-23 KLM97J AMS → NTE May 23, 19:00 UTCMay 23, 20:15 UTC1h 15m
2026-05-23 KLM44T NTE → AMS May 23, 15:55 UTCMay 23, 17:05 UTC1h 10m
2026-05-23 KLM1423 AMS → NTE May 23, 13:15 UTCMay 23, 14:30 UTC1h 15m
2026-05-23 KLM60Z NTE → AMS May 23, 10:20 UTCMay 23, 11:30 UTC1h 10m
2026-05-23 KLM81Y AMS → NTE May 23, 08:05 UTCMay 23, 09:20 UTC1h 15m
2026-05-23 KLM52N NTE → AMS May 23, 04:55 UTCMay 23, 06:05 UTC1h 10m
2026-05-22 AFR55YM - May 22, 19:35 UTCMay 22, 20:25 UTC50m
2026-05-22 AFR88XN NTE → LYS May 22, 17:40 UTCMay 22, 18:30 UTC50m
2026-05-22 AFR32NV LYS → NTE May 22, 15:50 UTCMay 22, 16:50 UTC1h 0m
2026-05-22 AFR33FR NTE → LYS May 22, 13:55 UTCMay 22, 14:45 UTC50m
2026-05-22 AFR53VH CDG → NTE May 22, 12:10 UTCMay 22, 12:50 UTC40m

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

Mode-S 39856F frequently asked

What is Mode-S code 39856F?
39856F is an ICAO 24-bit transponder address. Allocated to France. Assigned to F-HBLP.
Where is Mode-S 39856F registered?
Mode-S code 39856F is allocated to France (FR). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 39856F broadcasting right now?
Yes. Mode-S 39856F is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 39856F, octal 16302557, decimal 3,769,711.
What flights does 39856F operate?
Mode-S 39856F has broadcast 20 distinct callsigns, including KLM1850, KLM96C, KLM81Y, KLM60Z, KLM52N.