Apparatus

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sensors Mode-S transponder

505DF4

ICAO 24-bit transponder address · allocated to Slovakia

Currently assigned to OM-ATT · BELL 429 GlobalRanger

Hex
505DF4
Octal
24056764
Decimal
5,266,932
Country
SK
Tail
OM-ATT
Type
B429
No current signal · last broadcast 6d ago
Flights observed
86
Distinct callsigns
1
Country
SK
Last broadcast
6d ago

Last known position

Most recent position reported by Mode-S 505DF4.

Country allocation

The ICAO 24-bit address 505DF4 falls within the block assigned to Slovakia (SK) by ICAO Annex 10, Volume III. Every aircraft registered in Slovakia 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
K06 - 86 2026-07-12

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-12 K06 - Jul 12, 08:10 UTCJul 12, 08:35 UTC25m
2026-07-12 K06 - Jul 12, 05:40 UTCJul 12, 06:10 UTC30m
2026-07-11 K06 - Jul 11, 13:05 UTCJul 11, 13:45 UTC40m
2026-07-11 K06 - Jul 11, 12:10 UTCJul 11, 12:20 UTC10m
2026-07-11 K06 - Jul 11, 09:10 UTCJul 11, 09:25 UTC15m
2026-07-11 K06 - Jul 11, 08:25 UTCJul 11, 08:40 UTC15m
2026-07-08 K06 - Jul 8, 09:25 UTCJul 8, 10:00 UTC35m
2026-07-06 K06 - Jul 6, 13:35 UTCJul 6, 14:10 UTC35m
2026-07-04 K06 - Jul 4, 11:20 UTCJul 4, 12:10 UTC50m
2026-07-03 K06 - Jul 3, 14:45 UTCJul 3, 15:15 UTC30m
2026-07-03 K06 - Jul 3, 13:45 UTCJul 3, 13:55 UTC10m
2026-07-03 K06 - Jul 3, 05:35 UTCJul 3, 06:10 UTC35m
2026-07-02 K06 - Jul 2, 16:50 UTCJul 2, 17:00 UTC10m
2026-07-02 K06 - Jul 2, 16:00 UTCJul 2, 16:10 UTC10m
2026-07-02 K06 - Jul 2, 11:15 UTCJul 2, 11:30 UTC15m
2026-06-30 K06 - Jun 30, 14:20 UTCJun 30, 14:55 UTC35m
2026-06-29 K06 - Jun 29, 16:29 UTCJun 29, 17:34 UTC1h 5m
2026-06-29 K06 - Jun 29, 09:54 UTCJun 29, 10:34 UTC40m
2026-06-28 K06 - Jun 28, 12:25 UTCJun 28, 12:35 UTC10m
2026-06-27 K06 - Jun 27, 14:54 UTCJun 27, 16:20 UTC1h 25m
2026-06-27 K06 - Jun 27, 12:25 UTCJun 27, 13:09 UTC45m
2026-06-25 K06 - Jun 25, 07:34 UTCJun 25, 08:14 UTC40m
2026-06-24 K06 - Jun 24, 17:34 UTCJun 24, 18:20 UTC45m
2026-06-24 K06 - Jun 24, 11:34 UTCJun 24, 12:44 UTC1h 10m
2026-06-24 K06 - Jun 24, 10:10 UTCJun 24, 10:49 UTC40m
2026-06-23 K06 - Jun 23, 09:29 UTCJun 23, 09:54 UTC25m
2026-06-23 K06 - Jun 23, 07:55 UTCJun 23, 08:50 UTC55m
2026-06-20 K06 - Jun 20, 14:39 UTCJun 20, 15:09 UTC30m
2026-06-20 K06 - Jun 20, 10:39 UTCJun 20, 10:44 UTC5m
2026-06-19 K06 - Jun 19, 11:45 UTCJun 19, 11:54 UTC10m
2026-06-19 K06 - Jun 19, 10:54 UTCJun 19, 11:09 UTC15m
2026-06-18 K06 - Jun 18, 16:15 UTCJun 18, 16:50 UTC35m
2026-06-18 K06 - Jun 18, 14:15 UTCJun 18, 14:40 UTC25m
2026-06-18 K06 - Jun 18, 13:10 UTCJun 18, 13:30 UTC20m
2026-06-18 K06 - Jun 18, 10:30 UTCJun 18, 10:40 UTC10m
2026-06-18 K06 - Jun 18, 08:20 UTCJun 18, 09:40 UTC1h 20m
2026-06-17 K06 - Jun 17, 07:30 UTCJun 17, 07:40 UTC10m
2026-06-17 K06 - Jun 17, 06:00 UTCJun 17, 06:10 UTC10m
2026-06-15 K06 - Jun 15, 08:15 UTCJun 15, 09:20 UTC1h 5m
2026-06-14 K06 - Jun 14, 11:10 UTCJun 14, 11:45 UTC35m
2026-06-14 K06 - Jun 14, 09:55 UTCJun 14, 10:25 UTC30m
2026-06-13 K06 - Jun 13, 18:50 UTCJun 13, 19:00 UTC10m
2026-06-13 K06 - Jun 13, 17:00 UTCJun 13, 17:40 UTC40m
2026-06-13 K06 - Jun 13, 15:00 UTCJun 13, 15:25 UTC25m
2026-06-13 K06 - Jun 13, 10:25 UTCJun 13, 11:15 UTC50m
2026-06-13 K06 - Jun 13, 09:30 UTCJun 13, 09:50 UTC20m
2026-06-12 K06 - Jun 12, 10:40 UTCJun 12, 11:10 UTC30m
2026-06-09 K06 - Jun 9, 13:00 UTCJun 9, 13:10 UTC10m
2026-06-09 K06 - Jun 9, 11:55 UTCJun 9, 12:25 UTC30m
2026-06-09 K06 - Jun 9, 09:50 UTCJun 9, 10:15 UTC25m

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 OM-ATT page for operator, model, and routing details .

Mode-S 505DF4 frequently asked

What is Mode-S code 505DF4?
505DF4 is an ICAO 24-bit transponder address. Allocated to Slovakia. Assigned to OM-ATT.
Where is Mode-S 505DF4 registered?
Mode-S code 505DF4 is allocated to Slovakia (SK). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 505DF4 broadcasting right now?
No active broadcast right now. Last signal was 6d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 505DF4, octal 24056764, decimal 5,266,932.
What flights does 505DF4 operate?
Mode-S 505DF4 has broadcast 1 distinct callsign, including K06.