sensors Mode-S transponder

AC8A7B

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N907PJ · operated by ROSETREE AVIATION LLC

Hex
AC8A7B
Octal
53105173
Decimal
11,307,643
Country
US
Tail
N907PJ
Type
CL35
Broadcasting now · callsign EJM907 · 1,300 ft
Flights observed
6
Distinct callsigns
1
Country
US
Last broadcast
1d ago

Current position

AC8A7B is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address AC8A7B 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
EJM907 - 6 2026-04-13

Recent flights last 6

DateFlightRouteTakeoffLandingDuration
2026-04-13 EJM907 - Apr 13, 16:15 UTCApr 13, 17:15 UTC1h 0m
2026-04-13 EJM907 - Apr 13, 16:10 UTCApr 13, 16:15 UTC5m
2026-04-13 EJM907 - Apr 13, 14:20 UTCApr 13, 15:20 UTC1h 0m
2026-04-13 EJM907 - Apr 13, 00:20 UTCApr 13, 01:20 UTC1h 0m
2026-04-13 EJM907 FXE → AGS Apr 13, 00:05 UTCApr 13, 01:20 UTC1h 15m
2026-04-12 EJM907 - Apr 12, 17:15 UTCApr 12, 19:10 UTC1h 55m

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 N907PJ page for operator, model, and routing details .

Mode-S AC8A7B frequently asked

What is Mode-S code AC8A7B?
AC8A7B is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N907PJ.
Where is Mode-S AC8A7B registered?
Mode-S code AC8A7B 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 AC8A7B broadcasting right now?
Yes. Mode-S AC8A7B is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AC8A7B, octal 53105173, decimal 11,307,643.
What flights does AC8A7B operate?
Mode-S AC8A7B has broadcast 1 distinct callsign, including EJM907.