Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

506DFF

ICAO 24-bit transponder address · allocated to Slovenia

Currently assigned to S5-DSM · DIAMOND DA-40 Club Star

Hex
506DFF
Octal
24066777
Decimal
5,271,039
Country
SI
Tail
S5-DSM
Type
DA40
No current signal · last broadcast 3d ago
Flights observed
108
Distinct callsigns
1
Country
SI
Last broadcast
3d ago

Last known position

Most recent position reported by Mode-S 506DFF.

Country allocation

The ICAO 24-bit address 506DFF falls within the block assigned to Slovenia (SI) by ICAO Annex 10, Volume III. Every aircraft registered in Slovenia 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 1 distinct

Callsign Airline Flights Last seen
S5DSM - 108 2026-07-17

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-17 S5DSM - Jul 17, 15:15 UTCJul 17, 15:25 UTC10m
2026-07-17 S5DSM - Jul 17, 13:45 UTCJul 17, 14:15 UTC30m
2026-07-17 S5DSM - Jul 17, 08:49 UTCJul 17, 10:50 UTC2h 0m
2026-07-16 S5DSM - Jul 16, 12:34 UTCJul 16, 14:25 UTC1h 50m
2026-07-16 S5DSM - Jul 16, 08:35 UTCJul 16, 10:15 UTC1h 40m
2026-07-12 S5DSM INN → INN Jul 12, 07:05 UTCJul 12, 07:55 UTC50m
2026-07-12 S5DSM - Jul 12, 05:20 UTCJul 12, 05:40 UTC20m
2026-07-11 S5DSM INN → INN Jul 11, 16:00 UTCJul 11, 16:25 UTC25m
2026-07-11 S5DSM - Jul 11, 10:15 UTCJul 11, 11:10 UTC55m
2026-07-11 S5DSM - Jul 11, 08:05 UTCJul 11, 08:55 UTC50m
2026-07-10 S5DSM - Jul 10, 09:15 UTCJul 10, 10:00 UTC45m
2026-07-10 S5DSM - Jul 10, 07:10 UTCJul 10, 08:10 UTC1h 0m
2026-07-09 S5DSM - Jul 9, 16:15 UTCJul 9, 16:40 UTC25m
2026-07-09 S5DSM - Jul 9, 12:10 UTCJul 9, 12:35 UTC25m
2026-07-09 S5DSM - Jul 9, 09:20 UTCJul 9, 10:25 UTC1h 5m
2026-07-08 S5DSM INN → INN Jul 8, 09:05 UTCJul 8, 09:20 UTC15m
2026-07-03 S5DSM INN → INN Jul 3, 12:40 UTCJul 3, 13:50 UTC1h 10m
2026-07-02 S5DSM - Jul 2, 15:40 UTCJul 2, 16:05 UTC25m
2026-07-02 S5DSM - Jul 2, 14:45 UTCJul 2, 15:00 UTC15m
2026-07-02 S5DSM - Jul 2, 08:45 UTCJul 2, 10:00 UTC1h 15m
2026-06-30 S5DSM - Jun 30, 15:30 UTCJun 30, 16:25 UTC55m
2026-06-30 S5DSM - Jun 30, 09:05 UTCJun 30, 11:05 UTC2h 0m
2026-06-29 S5DSM - Jun 29, 14:29 UTCJun 29, 14:44 UTC15m
2026-06-26 S5DSM - Jun 26, 12:29 UTCJun 26, 13:19 UTC50m
2026-06-26 S5DSM INN → POW Jun 26, 06:35 UTCJun 26, 08:10 UTC1h 35m
2026-06-25 S5DSM - Jun 25, 15:24 UTCJun 25, 16:39 UTC1h 15m
2026-06-25 S5DSM - Jun 25, 13:20 UTCJun 25, 13:40 UTC20m
2026-06-25 S5DSM - Jun 25, 11:54 UTCJun 25, 12:15 UTC20m
2026-06-25 S5DSM - Jun 25, 09:14 UTCJun 25, 09:45 UTC30m
2026-06-25 S5DSM - Jun 25, 06:40 UTCJun 25, 07:05 UTC25m
2026-06-24 S5DSM - Jun 24, 15:00 UTCJun 24, 16:14 UTC1h 15m
2026-06-24 S5DSM - Jun 24, 13:44 UTCJun 24, 14:09 UTC25m
2026-06-24 S5DSM - Jun 24, 11:45 UTCJun 24, 12:40 UTC55m
2026-06-24 S5DSM - Jun 24, 06:55 UTCJun 24, 07:44 UTC50m
2026-06-22 S5DSM - Jun 22, 10:15 UTCJun 22, 11:00 UTC45m
2026-06-19 S5DSM INN → INN Jun 19, 14:04 UTCJun 19, 14:29 UTC25m
2026-06-19 S5DSM - Jun 19, 13:09 UTCJun 19, 13:20 UTC10m
2026-06-19 S5DSM INN → INN Jun 19, 09:55 UTCJun 19, 11:14 UTC1h 20m
2026-06-19 S5DSM - Jun 19, 06:04 UTCJun 19, 07:25 UTC1h 20m
2026-06-18 S5DSM - Jun 18, 15:30 UTCJun 18, 16:55 UTC1h 25m
2026-06-18 S5DSM - Jun 18, 09:05 UTCJun 18, 09:25 UTC20m
2026-06-18 S5DSM - Jun 18, 08:00 UTCJun 18, 08:25 UTC25m
2026-06-16 S5DSM - Jun 16, 16:10 UTCJun 16, 16:25 UTC15m
2026-06-06 S5DSM - Jun 6, 09:45 UTCJun 6, 09:55 UTC10m
2026-06-04 S5DSM INN → INN Jun 4, 14:10 UTCJun 4, 14:25 UTC15m
2026-06-04 S5DSM - Jun 4, 10:50 UTCJun 4, 11:20 UTC30m
2026-06-04 S5DSM - Jun 4, 08:30 UTCJun 4, 09:05 UTC35m
2026-06-02 S5DSM - Jun 2, 11:00 UTCJun 2, 12:55 UTC1h 55m
2026-06-02 S5DSM INN → INN Jun 2, 08:30 UTCJun 2, 10:05 UTC1h 35m
2026-06-01 S5DSM - Jun 1, 14:45 UTCJun 1, 15:15 UTC30m

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 S5-DSM page for operator, model, and routing details .

Mode-S 506DFF frequently asked

What is Mode-S code 506DFF?
506DFF is an ICAO 24-bit transponder address. Allocated to Slovenia. Assigned to S5-DSM.
Where is Mode-S 506DFF registered?
Mode-S code 506DFF is allocated to Slovenia (SI). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 506DFF broadcasting right now?
No active broadcast right now. Last signal was 3d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 506DFF, octal 24066777, decimal 5,271,039.
What flights does 506DFF operate?
Mode-S 506DFF has broadcast 1 distinct callsign, including S5DSM.