sensors Mode-S transponder

AC8ABE

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N907SA · operated by LEAD AND STEEL 2 LLC

Hex
AC8ABE
Octal
53105276
Decimal
11,307,710
Country
US
Tail
N907SA
Type
CRJ2
No current signal · last broadcast 1d ago
Flights observed
6
Distinct callsigns
1
Country
US
Last broadcast
1d ago

Last known position

Most recent position reported by Mode-S AC8ABE.

Country allocation

The ICAO 24-bit address AC8ABE 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
SGX907 - 6 2026-04-13

Recent flights last 6

DateFlightRouteTakeoffLandingDuration
2026-04-13 SGX907 - Apr 13, 19:55 UTCApr 13, 20:10 UTC15m
2026-04-13 SGX907 - Apr 13, 16:15 UTCApr 13, 18:25 UTC2h 10m
2026-04-13 SGX907 - Apr 13, 15:50 UTCApr 13, 18:25 UTC2h 35m
2026-04-13 SGX907 - Apr 13, 14:35 UTCApr 13, 16:15 UTC1h 40m
2026-04-13 SGX907 - Apr 13, 04:20 UTCApr 13, 05:20 UTC1h 0m
2026-04-13 SGX907 - Apr 13, 04:05 UTCApr 13, 04:15 UTC10m

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 N907SA page for operator, model, and routing details .

Mode-S AC8ABE frequently asked

What is Mode-S code AC8ABE?
AC8ABE is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N907SA.
Where is Mode-S AC8ABE registered?
Mode-S code AC8ABE 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 AC8ABE 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 AC8ABE, octal 53105276, decimal 11,307,710.
What flights does AC8ABE operate?
Mode-S AC8ABE has broadcast 1 distinct callsign, including SGX907.