sensors Mode-S transponder

A09B53

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N1380T · operated by N1380T LLC

Hex
A09B53
Octal
50115523
Decimal
10,525,523
Country
US
Tail
N1380T
Type
PA34
No current signal · last broadcast 1d ago
Flights observed
8
Distinct callsigns
1
Country
US
Last broadcast
1d ago

Last known position

Most recent position reported by Mode-S A09B53.

Country allocation

The ICAO 24-bit address A09B53 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
N1380T - 8 2026-04-13

Recent flights last 8

DateFlightRouteTakeoffLandingDuration
2026-04-13 N1380T - Apr 13, 19:50 UTCApr 13, 20:10 UTC20m
2026-04-13 N1380T HWO → HWO Apr 13, 17:35 UTCApr 13, 18:30 UTC55m
2026-04-13 N1380T - Apr 13, 16:15 UTCApr 13, 16:25 UTC10m
2026-04-13 N1380T - Apr 13, 15:50 UTCApr 13, 16:25 UTC35m
2026-04-13 N1380T - Apr 13, 15:30 UTCApr 13, 16:15 UTC45m
2026-04-13 N1380T - Apr 13, 00:35 UTCApr 13, 02:25 UTC1h 50m
2026-04-12 N1380T - Apr 12, 19:10 UTCApr 12, 19:35 UTC25m
2026-04-12 N1380T - Apr 12, 17:40 UTCApr 12, 18:15 UTC35m

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 N1380T page for operator, model, and routing details .

Mode-S A09B53 frequently asked

What is Mode-S code A09B53?
A09B53 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N1380T.
Where is Mode-S A09B53 registered?
Mode-S code A09B53 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 A09B53 broadcasting right now?
No active broadcast right now. Last signal was 1d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A09B53, octal 50115523, decimal 10,525,523.
What flights does A09B53 operate?
Mode-S A09B53 has broadcast 1 distinct callsign, including N1380T.