sensors Mode-S transponder

A5F03A

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N482CA · CESSNA TR182 Turbo Skylane RG · operated by CIVIL AIR PATROL

Hex
A5F03A
Octal
51370072
Decimal
10,874,938
Country
US
Tail
N482CA
Type
C82T
No current signal · last broadcast 1d ago
Flights observed
10
Distinct callsigns
1
Country
US
Last broadcast
1d ago

Last known position

Most recent position reported by Mode-S A5F03A.

Country allocation

The ICAO 24-bit address A5F03A 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
CAP604 - 10 2026-05-19

Recent flights last 10

DateFlightRouteTakeoffLandingDuration
2026-05-19 CAP604 - May 19, 13:50 UTCMay 19, 15:00 UTC1h 10m
2026-05-18 CAP604 - May 18, 15:25 UTCMay 18, 16:10 UTC45m
2026-05-15 CAP604 - May 15, 15:00 UTCMay 15, 15:40 UTC40m
2026-05-12 CAP604 - May 12, 15:10 UTCMay 12, 16:05 UTC55m
2026-05-11 CAP604 - May 11, 21:00 UTCMay 11, 22:35 UTC1h 34m
2026-05-08 CAP604 - May 8, 14:50 UTCMay 8, 15:50 UTC1h 0m
2026-05-08 CAP604 - May 8, 12:49 UTCMay 8, 13:55 UTC1h 5m
2026-04-28 CAP604 - Apr 28, 21:35 UTCApr 28, 22:55 UTC1h 20m
2026-04-28 CAP604 - Apr 28, 13:30 UTCApr 28, 15:35 UTC2h 5m
2026-04-27 CAP604 - Apr 27, 16:30 UTCApr 27, 18:00 UTC1h 30m

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 N482CA page for operator, model, and routing details .

Mode-S A5F03A frequently asked

What is Mode-S code A5F03A?
A5F03A is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N482CA.
Where is Mode-S A5F03A registered?
Mode-S code A5F03A 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 A5F03A 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 A5F03A, octal 51370072, decimal 10,874,938.
What flights does A5F03A operate?
Mode-S A5F03A has broadcast 1 distinct callsign, including CAP604.