sensors Mode-S transponder

A25678

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N25PP · CESSNA 560XL Citation XLS · operated by TSC AIRCRAFT LLC

Hex
A25678
Octal
50453170
Decimal
10,638,968
Country
US
Tail
N25PP
Type
C56X
No current signal · last broadcast 1d ago
Flights observed
4
Distinct callsigns
1
Country
US
Last broadcast
1d ago

Last known position

Most recent position reported by Mode-S A25678.

Country allocation

The ICAO 24-bit address A25678 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
JTL25 Jetall Holdings 4 2026-04-13

Recent flights last 4

DateFlightRouteTakeoffLandingDuration
2026-04-13 JTL25 BKG → ACB Apr 13, 16:15 UTCApr 13, 17:15 UTC1h 0m
2026-04-13 JTL25 BKG → ACB Apr 13, 15:50 UTCApr 13, 17:15 UTC1h 25m
2026-04-13 JTL25 BKG → ACB Apr 13, 14:55 UTCApr 13, 16:15 UTC1h 20m
2026-04-12 JTL25 BKG → ACB Apr 12, 17:25 UTCApr 12, 18:50 UTC1h 25m

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 N25PP page for operator, model, and routing details .

Mode-S A25678 frequently asked

What is Mode-S code A25678?
A25678 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N25PP.
Where is Mode-S A25678 registered?
Mode-S code A25678 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 A25678 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 A25678, octal 50453170, decimal 10,638,968.
What flights does A25678 operate?
Mode-S A25678 has broadcast 1 distinct callsign, including JTL25.