sensors Mode-S transponder

4854CF

ICAO 24-bit transponder address · allocated to Netherlands

Currently assigned to PH-HBN · BOEING 737-800

Hex
4854CF
Octal
22052317
Decimal
4,740,303
Country
NL
Tail
PH-HBN
Type
B738
No current signal · last broadcast 13h ago
Flights observed
12
Distinct callsigns
6
Country
NL
Last broadcast
13h ago

Last known position

Most recent position reported by Mode-S 4854CF.

Country allocation

The ICAO 24-bit address 4854CF falls within the block assigned to Netherlands (NL) by ICAO Annex 10, Volume III. Every aircraft registered in Netherlands 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 6 distinct

Callsign Airline Flights Last seen
TRA85N Transavia Holland 3 2026-04-13
TRA6038 - 3 2026-04-13
TRA62U - 2 2026-04-14
TRA6037 - 2 2026-04-13
TRA6Y - 1 2026-04-14
TRA6082 - 1 2026-04-13

Recent flights last 12

DateFlightRouteTakeoffLandingDuration
2026-04-14 TRA62U - Apr 14, 09:10 UTCApr 14, 10:10 UTC1h 0m
2026-04-14 TRA62U - Apr 14, 08:10 UTCApr 14, 09:05 UTC55m
2026-04-14 TRA6Y - Apr 14, 05:15 UTCApr 14, 06:50 UTC1h 35m
2026-04-13 TRA6038 - Apr 13, 19:50 UTCApr 13, 20:35 UTC45m
2026-04-13 TRA6038 - Apr 13, 18:50 UTCApr 13, 20:10 UTC1h 20m
2026-04-13 TRA6037 - Apr 13, 16:15 UTCApr 13, 17:35 UTC1h 20m
2026-04-13 TRA6037 - Apr 13, 15:45 UTCApr 13, 16:15 UTC30m
2026-04-13 TRA6082 - Apr 13, 13:35 UTCApr 13, 14:45 UTC1h 10m
2026-04-13 TRA85N NCE → AMS Apr 13, 12:20 UTCApr 13, 12:35 UTC15m
2026-04-13 TRA85N NCE → AMS Apr 13, 11:55 UTCApr 13, 12:35 UTC40m
2026-04-13 TRA85N NCE → AMS Apr 13, 11:20 UTCApr 13, 12:15 UTC55m
2026-04-12 TRA6038 - Apr 12, 18:50 UTCApr 12, 20:15 UTC1h 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 PH-HBN page for operator, model, and routing details .

Mode-S 4854CF frequently asked

What is Mode-S code 4854CF?
4854CF is an ICAO 24-bit transponder address. Allocated to Netherlands. Assigned to PH-HBN.
Where is Mode-S 4854CF registered?
Mode-S code 4854CF is allocated to Netherlands (NL). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4854CF broadcasting right now?
No active broadcast right now. Last signal was 13h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4854CF, octal 22052317, decimal 4,740,303.
What flights does 4854CF operate?
Mode-S 4854CF has broadcast 6 distinct callsigns, including TRA85N, TRA6038, TRA62U, TRA6037, TRA6Y.