sensors Mode-S transponder

A2A7CD

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N270PM · CESSNA 500 Citation 1 · operated by AEROPSRING LEASING LLC

Hex
A2A7CD
Octal
50523715
Decimal
10,659,789
Country
US
Tail
N270PM
Type
C500
No current signal · last broadcast 23h ago
Flights observed
5
Distinct callsigns
1
Country
US
Last broadcast
23h ago

Last known position

Most recent position reported by Mode-S A2A7CD.

Country allocation

The ICAO 24-bit address A2A7CD 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
N270PM - 5 2026-04-13

Recent flights last 5

DateFlightRouteTakeoffLandingDuration
2026-04-13 N270PM - Apr 13, 23:15 UTCApr 13, 23:40 UTC25m
2026-04-13 N270PM - Apr 13, 20:10 UTCApr 13, 21:15 UTC1h 5m
2026-04-13 N270PM - Apr 13, 00:20 UTCApr 13, 01:10 UTC50m
2026-04-13 N270PM - Apr 13, 00:05 UTCApr 13, 01:10 UTC1h 5m
2026-04-12 N270PM - Apr 12, 17:15 UTCApr 12, 17:45 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 N270PM page for operator, model, and routing details .

Mode-S A2A7CD frequently asked

What is Mode-S code A2A7CD?
A2A7CD is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N270PM.
Where is Mode-S A2A7CD registered?
Mode-S code A2A7CD 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 A2A7CD 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 A2A7CD, octal 50523715, decimal 10,659,789.
What flights does A2A7CD operate?
Mode-S A2A7CD has broadcast 1 distinct callsign, including N270PM.