sensors Mode-S transponder

AC89FF

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N907JK · CESSNA 152 · operated by N907JK LLC

Hex
AC89FF
Octal
53104777
Decimal
11,307,519
Country
US
Tail
N907JK
Type
C152
No current signal · last broadcast 1d ago
Flights observed
7
Distinct callsigns
1
Country
US
Last broadcast
1d ago

Last known position

Most recent position reported by Mode-S AC89FF.

Country allocation

The ICAO 24-bit address AC89FF 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
SVX46 - 7 2026-04-13

Recent flights last 7

DateFlightRouteTakeoffLandingDuration
2026-04-13 SVX46 - Apr 13, 19:55 UTCApr 13, 20:10 UTC15m
2026-04-13 SVX46 ABL → SHG Apr 13, 19:35 UTCApr 13, 19:45 UTC10m
2026-04-13 SVX46 - Apr 13, 18:00 UTCApr 13, 19:30 UTC1h 30m
2026-04-13 SVX46 - Apr 13, 17:05 UTCApr 13, 17:25 UTC20m
2026-04-13 SVX46 - Apr 13, 06:45 UTCApr 13, 07:00 UTC15m
2026-04-13 SVX46 - Apr 13, 03:55 UTCApr 13, 04:10 UTC15m
2026-04-13 SVX46 - Apr 13, 02:35 UTCApr 13, 04:10 UTC1h 35m

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 N907JK page for operator, model, and routing details .

Mode-S AC89FF frequently asked

What is Mode-S code AC89FF?
AC89FF is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N907JK.
Where is Mode-S AC89FF registered?
Mode-S code AC89FF 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 AC89FF 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 AC89FF, octal 53104777, decimal 11,307,519.
What flights does AC89FF operate?
Mode-S AC89FF has broadcast 1 distinct callsign, including SVX46.