sensors Mode-S transponder

505EE1

ICAO 24-bit transponder address · allocated to Slovakia

Currently assigned to OM-LWA · ZLIN Z-42/142/242

Hex
505EE1
Octal
24057341
Decimal
5,267,169
Country
SK
Tail
OM-LWA
Type
Z42
No current signal · last broadcast 14h ago
Flights observed
7
Distinct callsigns
1
Country
SK
Last broadcast
14h ago

Last known position

Most recent position reported by Mode-S 505EE1.

Country allocation

The ICAO 24-bit address 505EE1 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
OMLWA - 7 2026-04-14

Recent flights last 7

DateFlightRouteTakeoffLandingDuration
2026-04-14 OMLWA - Apr 14, 09:15 UTCApr 14, 10:50 UTC1h 35m
2026-04-14 OMLWA - Apr 14, 07:00 UTCApr 14, 07:10 UTC10m
2026-04-13 OMLWA - Apr 13, 13:35 UTCApr 13, 13:50 UTC15m
2026-04-13 OMLWA - Apr 13, 09:55 UTCApr 13, 11:25 UTC1h 30m
2026-04-13 OMLWA - Apr 13, 08:20 UTCApr 13, 08:45 UTC25m
2026-04-13 OMLWA - Apr 13, 07:55 UTCApr 13, 08:45 UTC50m
2026-04-13 OMLWA - Apr 13, 07:40 UTCApr 13, 08:15 UTC35m

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

Mode-S 505EE1 frequently asked

What is Mode-S code 505EE1?
505EE1 is an ICAO 24-bit transponder address. Allocated to Slovakia. Assigned to OM-LWA.
Where is Mode-S 505EE1 registered?
Mode-S code 505EE1 is allocated to Slovakia (SK). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 505EE1 broadcasting right now?
No active broadcast right now. Last signal was 14h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 505EE1, octal 24057341, decimal 5,267,169.
What flights does 505EE1 operate?
Mode-S 505EE1 has broadcast 1 distinct callsign, including OMLWA.