sensors Mode-S transponder

AA265E

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N753ND · PIPER PA-28-140/150/160/180 · operated by UND AEROSPACE FOUNDATION

Hex
AA265E
Octal
52423136
Decimal
11,150,942
Country
US
Tail
N753ND
Type
P28A
Broadcasting now · callsign NDU753 · 6,775 ft
Flights observed
6
Distinct callsigns
1
Country
US
Last broadcast
1d ago

Current position

AA265E is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address AA265E falls within the block assigned to United States (US) by ICAO Annex 10, Volume III. Every aircraft registered in United States 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
NDU753 - 6 2026-04-13

Recent flights last 6

DateFlightRouteTakeoffLandingDuration
2026-04-13 NDU753 - Apr 13, 22:50 UTCApr 13, 23:40 UTC50m
2026-04-13 NDU753 AZA → AZA Apr 13, 18:00 UTCApr 13, 19:10 UTC1h 10m
2026-04-13 NDU753 - Apr 13, 16:15 UTCApr 13, 16:25 UTC10m
2026-04-13 NDU753 - Apr 13, 15:50 UTCApr 13, 16:25 UTC35m
2026-04-13 NDU753 - Apr 13, 15:35 UTCApr 13, 16:15 UTC40m
2026-04-13 NDU753 AZA → AZA Apr 13, 13:05 UTCApr 13, 14:15 UTC1h 10m

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 N753ND page for operator, model, and routing details .

Mode-S AA265E frequently asked

What is Mode-S code AA265E?
AA265E is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N753ND.
Where is Mode-S AA265E registered?
Mode-S code AA265E is allocated to United States (US). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is AA265E broadcasting right now?
Yes. Mode-S AA265E is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AA265E, octal 52423136, decimal 11,150,942.
What flights does AA265E operate?
Mode-S AA265E has broadcast 1 distinct callsign, including NDU753.