sensors Mode-S transponder

A61120

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N490LP · PIPISTREL Alpha Trainer · operated by MESA PILOT DEVELOPMENT LLC

Hex
A61120
Octal
51410440
Decimal
10,883,360
Country
US
Tail
N490LP
Type
PIAT
No current signal · last broadcast 15h ago
Flights observed
12
Distinct callsigns
1
Country
US
Last broadcast
15h ago

Last known position

Most recent position reported by Mode-S A61120.

Country allocation

The ICAO 24-bit address A61120 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
N490LP - 12 2026-04-14

Recent flights last 12

DateFlightRouteTakeoffLandingDuration
2026-04-14 N490LP - Apr 14, 09:10 UTCApr 14, 11:05 UTC1h 55m
2026-04-14 N490LP - Apr 14, 07:55 UTCApr 14, 09:05 UTC1h 10m
2026-04-14 N490LP - Apr 14, 07:10 UTCApr 14, 07:50 UTC40m
2026-04-14 N490LP - Apr 14, 06:55 UTCApr 14, 07:10 UTC15m
2026-04-14 N490LP - Apr 14, 05:15 UTCApr 14, 06:10 UTC55m
2026-04-13 N490LP - Apr 13, 19:50 UTCApr 13, 22:45 UTC2h 55m
2026-04-13 N490LP - Apr 13, 17:40 UTCApr 13, 20:10 UTC2h 30m
2026-04-13 N490LP - Apr 13, 16:15 UTCApr 13, 17:35 UTC1h 20m
2026-04-13 N490LP - Apr 13, 16:00 UTCApr 13, 16:15 UTC15m
2026-04-13 N490LP - Apr 13, 14:20 UTCApr 13, 15:20 UTC1h 0m
2026-04-13 N490LP - Apr 13, 12:25 UTCApr 13, 13:45 UTC1h 20m
2026-04-13 N490LP - Apr 13, 10:55 UTCApr 13, 11:55 UTC1h 0m

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 N490LP page for operator, model, and routing details .

Mode-S A61120 frequently asked

What is Mode-S code A61120?
A61120 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N490LP.
Where is Mode-S A61120 registered?
Mode-S code A61120 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 A61120 broadcasting right now?
No active broadcast right now. Last signal was 15h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A61120, octal 51410440, decimal 10,883,360.
What flights does A61120 operate?
Mode-S A61120 has broadcast 1 distinct callsign, including N490LP.