sensors Mode-S transponder

502D7C

ICAO 24-bit transponder address · allocated to Latvia

Currently assigned to YL-ABR · AIRBUS A220-300

Hex
502D7C
Octal
24026574
Decimal
5,254,524
Country
LV
Tail
YL-ABR
Type
BCS3
Broadcasting now · callsign BTI695 · 2,950 ft
Flights observed
2
Distinct callsigns
2
Country
LV
Last broadcast
2d ago

Current position

502D7C is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 502D7C 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 2 distinct

Callsign Airline Flights Last seen
BTI6UN - 1 2026-04-12
BTI4UJ Air Baltic 1 2026-04-12

Recent flights last 2

DateFlightRouteTakeoffLandingDuration
2026-04-12 BTI4UJ BER → RIX Apr 12, 18:45 UTCApr 12, 20:05 UTC1h 20m
2026-04-12 BTI6UN - Apr 12, 17:15 UTCApr 12, 18:00 UTC45m

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

Mode-S 502D7C frequently asked

What is Mode-S code 502D7C?
502D7C is an ICAO 24-bit transponder address. Allocated to Latvia. Assigned to YL-ABR.
Where is Mode-S 502D7C registered?
Mode-S code 502D7C is allocated to Latvia (LV). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 502D7C broadcasting right now?
Yes. Mode-S 502D7C is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 502D7C, octal 24026574, decimal 5,254,524.
What flights does 502D7C operate?
Mode-S 502D7C has broadcast 2 distinct callsigns, including BTI6UN, BTI4UJ.