sensors Mode-S transponder

5140D2

ICAO 24-bit transponder address · allocated to Georgia

Currently assigned to 4L-MWB · BOEING 777-200

Hex
5140D2
Octal
24240322
Decimal
5,325,010
Country
GE
Tail
4L-MWB
Type
B772
Broadcasting now · callsign SZN403 · 6,250 ft
Flights observed
9
Distinct callsigns
2
Country
GE
Last broadcast
18h ago

Current position

5140D2 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 5140D2 falls within the block assigned to Georgia (GE) by ICAO Annex 10, Volume III. Every aircraft registered in Georgia 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
SZN403 Air Senegal 5 2026-04-14
SZN404 - 4 2026-04-14

Recent flights last 9

DateFlightRouteTakeoffLandingDuration
2026-04-14 SZN404 - Apr 14, 09:40 UTCApr 14, 11:05 UTC1h 25m
2026-04-14 SZN403 DSS → CDG Apr 14, 05:15 UTCApr 14, 06:10 UTC55m
2026-04-13 SZN404 - Apr 13, 14:25 UTCApr 13, 15:10 UTC45m
2026-04-13 SZN404 - Apr 13, 11:55 UTCApr 13, 15:10 UTC3h 15m
2026-04-13 SZN404 - Apr 13, 09:30 UTCApr 13, 11:55 UTC2h 25m
2026-04-13 SZN403 DSS → CDG Apr 13, 04:20 UTCApr 13, 06:40 UTC2h 20m
2026-04-13 SZN403 DSS → CDG Apr 13, 03:55 UTCApr 13, 06:40 UTC2h 45m
2026-04-13 SZN403 DSS → CDG Apr 13, 03:30 UTCApr 13, 04:15 UTC45m
2026-04-13 SZN403 DSS → CDG Apr 13, 00:50 UTCApr 13, 01:05 UTC15m

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 4L-MWB page for operator, model, and routing details .

Mode-S 5140D2 frequently asked

What is Mode-S code 5140D2?
5140D2 is an ICAO 24-bit transponder address. Allocated to Georgia. Assigned to 4L-MWB.
Where is Mode-S 5140D2 registered?
Mode-S code 5140D2 is allocated to Georgia (GE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 5140D2 broadcasting right now?
Yes. Mode-S 5140D2 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 5140D2, octal 24240322, decimal 5,325,010.
What flights does 5140D2 operate?
Mode-S 5140D2 has broadcast 2 distinct callsigns, including SZN403, SZN404.