sensors Mode-S transponder

AC3493

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N886ER · CESSNA 172 Skyhawk · operated by EMBRY-RIDDLE AERONAUTICAL UNIVERSITY INC

Hex
AC3493
Octal
53032223
Decimal
11,285,651
Country
US
Tail
N886ER
Type
C172
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 AC3493.

Country allocation

The ICAO 24-bit address AC3493 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
ERU886 - 7 2026-04-13

Recent flights last 7

DateFlightRouteTakeoffLandingDuration
2026-04-13 ERU886 - Apr 13, 19:50 UTCApr 13, 21:35 UTC1h 45m
2026-04-13 ERU886 - Apr 13, 18:55 UTCApr 13, 20:10 UTC1h 15m
2026-04-13 ERU886 - Apr 13, 17:05 UTCApr 13, 17:20 UTC15m
2026-04-13 ERU886 - Apr 13, 15:30 UTCApr 13, 15:50 UTC20m
2026-04-13 ERU886 - Apr 13, 02:30 UTCApr 13, 02:45 UTC15m
2026-04-13 ERU886 - Apr 13, 01:10 UTCApr 13, 01:25 UTC15m
2026-04-12 ERU886 - Apr 12, 17:45 UTCApr 12, 19:00 UTC1h 15m

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 N886ER page for operator, model, and routing details .

Mode-S AC3493 frequently asked

What is Mode-S code AC3493?
AC3493 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N886ER.
Where is Mode-S AC3493 registered?
Mode-S code AC3493 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 AC3493 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 AC3493, octal 53032223, decimal 11,285,651.
What flights does AC3493 operate?
Mode-S AC3493 has broadcast 1 distinct callsign, including ERU886.