sensors Mode-S transponder

A945E7

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N697ND · PIPER PA-44 Seminole · operated by SOUTH DAKOTA STATE UNIVERSITY

Hex
A945E7
Octal
52242747
Decimal
11,093,479
Country
US
Tail
N697ND
Type
PA44
No current signal · last broadcast 23h ago
Flights observed
7
Distinct callsigns
1
Country
US
Last broadcast
23h ago

Last known position

Most recent position reported by Mode-S A945E7.

Country allocation

The ICAO 24-bit address A945E7 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
N697ND - 7 2026-04-13

Recent flights last 7

DateFlightRouteTakeoffLandingDuration
2026-04-13 N697ND - Apr 13, 23:25 UTCApr 13, 23:30 UTC5m
2026-04-13 N697ND BKX → BKX Apr 13, 22:55 UTCApr 13, 23:20 UTC25m
2026-04-13 N697ND - Apr 13, 19:50 UTCApr 13, 20:55 UTC1h 5m
2026-04-13 N697ND - Apr 13, 19:35 UTCApr 13, 19:45 UTC10m
2026-04-13 N697ND - Apr 13, 00:45 UTCApr 13, 00:50 UTC5m
2026-04-13 N697ND BKX → BKX Apr 13, 00:30 UTCApr 13, 00:40 UTC10m
2026-04-12 N697ND - Apr 12, 23:55 UTCApr 13, 00:25 UTC30m

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 N697ND page for operator, model, and routing details .

Mode-S A945E7 frequently asked

What is Mode-S code A945E7?
A945E7 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N697ND.
Where is Mode-S A945E7 registered?
Mode-S code A945E7 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 A945E7 broadcasting right now?
No active broadcast right now. Last signal was 23h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A945E7, octal 52242747, decimal 11,093,479.
What flights does A945E7 operate?
Mode-S A945E7 has broadcast 1 distinct callsign, including N697ND.