sensors Mode-S transponder

A613C4

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N49090 · CESSNA 152 · operated by VICTORY AVIATION LLC

Hex
A613C4
Octal
51411704
Decimal
10,884,036
Country
US
Tail
N49090
Type
C152
No current signal · last broadcast 1d ago
Flights observed
11
Distinct callsigns
1
Country
US
Last broadcast
1d ago

Last known position

Most recent position reported by Mode-S A613C4.

Country allocation

The ICAO 24-bit address A613C4 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
AVL503 - 11 2026-05-12

Recent flights last 11

DateFlightRouteTakeoffLandingDuration
2026-05-12 AVL503 - May 12, 12:50 UTCMay 12, 13:45 UTC55m
2026-05-11 AVL503 - May 11, 14:35 UTCMay 11, 15:25 UTC50m
2026-05-11 AVL503 - May 11, 13:00 UTCMay 11, 13:40 UTC40m
2026-05-10 AVL503 WGO → WGO May 10, 17:15 UTCMay 10, 17:49 UTC35m
2026-05-10 AVL503 - May 10, 15:15 UTCMay 10, 15:39 UTC25m
2026-05-07 AVL503 - May 7, 19:15 UTCMay 7, 19:50 UTC35m
2026-05-01 AVL503 WGO → WGO May 1, 14:40 UTCMay 1, 15:55 UTC1h 15m
2026-04-30 AVL503 WGO → WGO Apr 30, 14:35 UTCApr 30, 15:15 UTC40m
2026-04-28 AVL503 - Apr 28, 15:40 UTCApr 28, 15:55 UTC15m
2026-04-21 AVL503 - Apr 21, 14:50 UTCApr 21, 15:20 UTC30m
2026-04-15 AVL503 - Apr 15, 19:40 UTCApr 15, 19:50 UTC10m

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 N49090 page for operator, model, and routing details .

Mode-S A613C4 frequently asked

What is Mode-S code A613C4?
A613C4 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N49090.
Where is Mode-S A613C4 registered?
Mode-S code A613C4 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 A613C4 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 A613C4, octal 51411704, decimal 10,884,036.
What flights does A613C4 operate?
Mode-S A613C4 has broadcast 1 distinct callsign, including AVL503.