sensors Mode-S transponder

A6A7D6

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N528ND · CESSNA 172 Skyhawk · operated by AEROSIM ACADEMY INC

Hex
A6A7D6
Octal
51523726
Decimal
10,921,942
Country
US
Tail
N528ND
Type
C172
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 A6A7D6.

Country allocation

The ICAO 24-bit address A6A7D6 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
LFA315 - 6 2026-04-13

Recent flights last 6

DateFlightRouteTakeoffLandingDuration
2026-04-13 LFA315 - Apr 13, 21:45 UTCApr 13, 22:15 UTC30m
2026-04-13 LFA315 - Apr 13, 19:50 UTCApr 13, 20:45 UTC55m
2026-04-13 LFA315 - Apr 13, 19:30 UTCApr 13, 20:10 UTC40m
2026-04-13 LFA315 - Apr 13, 16:15 UTCApr 13, 16:30 UTC15m
2026-04-13 LFA315 - Apr 13, 15:50 UTCApr 13, 16:30 UTC40m
2026-04-13 LFA315 - Apr 13, 15:20 UTCApr 13, 16:15 UTC55m

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 N528ND page for operator, model, and routing details .

Mode-S A6A7D6 frequently asked

What is Mode-S code A6A7D6?
A6A7D6 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N528ND.
Where is Mode-S A6A7D6 registered?
Mode-S code A6A7D6 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 A6A7D6 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 A6A7D6, octal 51523726, decimal 10,921,942.
What flights does A6A7D6 operate?
Mode-S A6A7D6 has broadcast 1 distinct callsign, including LFA315.