sensors Mode-S transponder

502DAC

ICAO 24-bit transponder address · allocated to Latvia

Currently assigned to YL-BTC · AIRBUS A220-300

Hex
502DAC
Octal
24026654
Decimal
5,254,572
Country
LV
Tail
YL-BTC
Type
BCS3
No current signal · last broadcast 15h ago
Flights observed
14
Distinct callsigns
10
Country
LV
Last broadcast
15h ago

Last known position

Most recent position reported by Mode-S 502DAC.

Country allocation

The ICAO 24-bit address 502DAC falls within the block assigned to Latvia (LV) by ICAO Annex 10, Volume III. Every aircraft registered in Latvia 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 10 distinct

Callsign Airline Flights Last seen
SWR8YP Swiss International Air Lines 2 2026-04-13
SWR462F Swiss International Air Lines 2 2026-04-14
SWR2LB - 2 2026-04-13
SWR2DK - 2 2026-04-13
SWR8X - 1 2026-04-12
SWR5CV - 1 2026-04-13
SWR51D - 1 2026-04-13
SWR3CA Swiss International Air Lines 1 2026-04-14
SWR339H - 1 2026-04-13
SWR2279 - 1 2026-04-13

Recent flights last 14

DateFlightRouteTakeoffLandingDuration
2026-04-14 SWR462F WAW → ZRH Apr 14, 09:10 UTCApr 14, 09:55 UTC45m
2026-04-14 SWR462F WAW → ZRH Apr 14, 08:05 UTCApr 14, 09:05 UTC1h 0m
2026-04-14 SWR3CA ZRH → WAW Apr 14, 05:25 UTCApr 14, 07:00 UTC1h 35m
2026-04-13 SWR8YP BEG → ZRH Apr 13, 19:50 UTCApr 13, 20:25 UTC35m
2026-04-13 SWR8YP BEG → ZRH Apr 13, 18:55 UTCApr 13, 20:10 UTC1h 15m
2026-04-13 SWR2DK - Apr 13, 16:15 UTCApr 13, 17:45 UTC1h 30m
2026-04-13 SWR2DK - Apr 13, 16:10 UTCApr 13, 16:15 UTC5m
2026-04-13 SWR51D MAN → ZRH Apr 13, 13:20 UTCApr 13, 15:00 UTC1h 40m
2026-04-13 SWR2LB - Apr 13, 11:55 UTCApr 13, 12:05 UTC10m
2026-04-13 SWR2LB ZRH → MAN Apr 13, 10:35 UTCApr 13, 12:05 UTC1h 30m
2026-04-13 SWR339H LUX → ZRH Apr 13, 08:40 UTCApr 13, 09:25 UTC45m
2026-04-13 SWR5CV ZRH → LUX Apr 13, 06:45 UTCApr 13, 07:20 UTC35m
2026-04-13 SWR2279 - Apr 13, 04:30 UTCApr 13, 05:20 UTC50m
2026-04-12 SWR8X - Apr 12, 18:20 UTCApr 12, 19:35 UTC1h 15m

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 YL-BTC page for operator, model, and routing details .

Mode-S 502DAC frequently asked

What is Mode-S code 502DAC?
502DAC is an ICAO 24-bit transponder address. Allocated to Latvia. Assigned to YL-BTC.
Where is Mode-S 502DAC registered?
Mode-S code 502DAC is allocated to Latvia (LV). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 502DAC broadcasting right now?
No active broadcast right now. Last signal was 15h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 502DAC, octal 24026654, decimal 5,254,572.
What flights does 502DAC operate?
Mode-S 502DAC has broadcast 10 distinct callsigns, including SWR8YP, SWR462F, SWR2LB, SWR2DK, SWR8X.