sensors Mode-S transponder

4A9E05

ICAO 24-bit transponder address · allocated to Sweden

Currently assigned to SE-GPE · PIPER PA-28-140/150/160/180

Hex
4A9E05
Octal
22517005
Decimal
4,890,117
Country
SE
Tail
SE-GPE
Type
P28A
No current signal · last broadcast 18h ago
Flights observed
5
Distinct callsigns
1
Country
SE
Last broadcast
18h ago

Last known position

Most recent position reported by Mode-S 4A9E05.

Country allocation

The ICAO 24-bit address 4A9E05 falls within the block assigned to Sweden (SE) by ICAO Annex 10, Volume III. Every aircraft registered in Sweden 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
SEGPE - 5 2026-04-14

Recent flights last 5

DateFlightRouteTakeoffLandingDuration
2026-04-14 SEGPE - Apr 14, 10:15 UTCApr 14, 11:05 UTC50m
2026-04-14 SEGPE - Apr 14, 07:10 UTCApr 14, 07:40 UTC30m
2026-04-14 SEGPE - Apr 14, 06:00 UTCApr 14, 07:10 UTC1h 10m
2026-04-13 SEGPE - Apr 13, 12:45 UTCApr 13, 13:15 UTC30m
2026-04-13 SEGPE - Apr 13, 04:25 UTCApr 13, 05:30 UTC1h 5m

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 SE-GPE page for operator, model, and routing details .

Mode-S 4A9E05 frequently asked

What is Mode-S code 4A9E05?
4A9E05 is an ICAO 24-bit transponder address. Allocated to Sweden. Assigned to SE-GPE.
Where is Mode-S 4A9E05 registered?
Mode-S code 4A9E05 is allocated to Sweden (SE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4A9E05 broadcasting right now?
No active broadcast right now. Last signal was 18h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4A9E05, octal 22517005, decimal 4,890,117.
What flights does 4A9E05 operate?
Mode-S 4A9E05 has broadcast 1 distinct callsign, including SEGPE.