Apparatus

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sensors Mode-S transponder

A5C990

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N472LP · PIPISTREL Alpha Trainer · operated by MESA PILOT DEVELOPMENT LLC

Hex
A5C990
Octal
51344620
Decimal
10,865,040
Country
US
Tail
N472LP
Type
PIAT
Broadcasting now · callsign N472LP · 5,725 ft
Flights observed
269
Distinct callsigns
1
Country
US
Last broadcast
9m ago

Current position

A5C990 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address A5C990 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
N472LP - 269 2026-07-18

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-18 N472LP - Jul 18, 10:45 UTCJul 18, 12:00 UTC1h 15m
2026-07-14 N472LP - Jul 14, 20:40 UTCJul 14, 22:35 UTC1h 55m
2026-07-14 N472LP - Jul 14, 17:45 UTCJul 14, 20:15 UTC2h 30m
2026-07-14 N472LP - Jul 14, 15:45 UTCJul 14, 17:20 UTC1h 35m
2026-07-14 N472LP - Jul 14, 14:15 UTCJul 14, 15:15 UTC1h 0m
2026-07-14 N472LP - Jul 14, 10:45 UTCJul 14, 13:40 UTC2h 55m
2026-07-10 N472LP - Jul 10, 05:55 UTCJul 10, 08:40 UTC2h 45m
2026-07-10 N472LP - Jul 10, 02:25 UTCJul 10, 05:35 UTC3h 10m
2026-07-09 N472LP - Jul 9, 22:50 UTCJul 10, 02:05 UTC3h 15m
2026-07-09 N472LP - Jul 9, 17:35 UTCJul 9, 18:55 UTC1h 20m
2026-07-09 N472LP - Jul 9, 14:05 UTCJul 9, 17:10 UTC3h 5m
2026-07-09 N472LP - Jul 9, 10:45 UTCJul 9, 13:35 UTC2h 50m
2026-07-09 N472LP - Jul 9, 00:55 UTCJul 9, 03:20 UTC2h 25m
2026-07-08 N472LP - Jul 8, 17:10 UTCJul 8, 19:50 UTC2h 40m
2026-07-08 N472LP - Jul 8, 14:05 UTCJul 8, 16:45 UTC2h 40m
2026-07-08 N472LP - Jul 8, 10:50 UTCJul 8, 13:30 UTC2h 40m
2026-07-08 N472LP - Jul 8, 08:50 UTCJul 8, 10:30 UTC1h 40m
2026-07-08 N472LP - Jul 8, 05:35 UTCJul 8, 08:35 UTC3h 0m
2026-07-08 N472LP - Jul 8, 02:10 UTCJul 8, 05:10 UTC3h 0m
2026-07-07 N472LP - Jul 7, 23:00 UTCJul 8, 01:40 UTC2h 40m
2026-07-07 N472LP - Jul 7, 20:30 UTCJul 7, 22:35 UTC2h 5m
2026-07-07 N472LP - Jul 7, 17:30 UTCJul 7, 20:10 UTC2h 40m
2026-07-07 N472LP - Jul 7, 16:05 UTCJul 7, 17:15 UTC1h 10m
2026-07-07 N472LP - Jul 7, 14:30 UTCJul 7, 15:30 UTC1h 0m
2026-07-07 N472LP - Jul 7, 11:05 UTCJul 7, 14:05 UTC3h 0m
2026-07-07 N472LP - Jul 7, 08:20 UTCJul 7, 10:45 UTC2h 25m
2026-07-07 N472LP - Jul 7, 05:10 UTCJul 7, 08:00 UTC2h 50m
2026-07-07 N472LP - Jul 7, 02:00 UTCJul 7, 04:40 UTC2h 40m
2026-07-06 N472LP - Jul 6, 22:55 UTCJul 7, 01:45 UTC2h 50m
2026-07-06 N472LP - Jul 6, 20:15 UTCJul 6, 22:25 UTC2h 10m
2026-07-06 N472LP - Jul 6, 17:35 UTCJul 6, 19:55 UTC2h 20m
2026-07-06 N472LP - Jul 6, 14:20 UTCJul 6, 17:10 UTC2h 50m
2026-07-06 N472LP - Jul 6, 11:10 UTCJul 6, 14:00 UTC2h 50m
2026-07-06 N472LP - Jul 6, 09:00 UTCJul 6, 10:40 UTC1h 40m
2026-07-06 N472LP - Jul 6, 05:20 UTCJul 6, 08:40 UTC3h 20m
2026-07-06 N472LP - Jul 6, 02:00 UTCJul 6, 04:55 UTC2h 55m
2026-07-05 N472LP - Jul 5, 23:00 UTCJul 6, 01:40 UTC2h 40m
2026-06-28 N472LP - Jun 28, 10:44 UTCJun 28, 13:45 UTC3h 0m
2026-06-27 N472LP - Jun 27, 08:14 UTCJun 27, 10:29 UTC2h 15m
2026-06-27 N472LP - Jun 27, 05:10 UTCJun 27, 07:45 UTC2h 35m
2026-06-27 N472LP - Jun 27, 01:49 UTCJun 27, 04:39 UTC2h 50m
2026-06-26 N472LP - Jun 26, 23:00 UTCJun 27, 01:09 UTC2h 10m
2026-06-26 N472LP - Jun 26, 17:00 UTCJun 26, 20:00 UTC3h 0m
2026-06-26 N472LP - Jun 26, 10:44 UTCJun 26, 13:40 UTC2h 55m
2026-06-25 N472LP - Jun 25, 17:20 UTCJun 25, 20:05 UTC2h 45m
2026-06-25 N472LP - Jun 25, 14:14 UTCJun 25, 16:55 UTC2h 40m
2026-06-25 N472LP - Jun 25, 10:59 UTCJun 25, 13:40 UTC2h 40m
2026-06-25 N472LP - Jun 25, 08:14 UTCJun 25, 10:35 UTC2h 20m
2026-06-25 N472LP - Jun 25, 05:09 UTCJun 25, 07:54 UTC2h 45m
2026-06-25 N472LP - Jun 25, 01:40 UTCJun 25, 04:40 UTC3h 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 N472LP page for operator, model, and routing details .

Mode-S A5C990 frequently asked

What is Mode-S code A5C990?
A5C990 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N472LP.
Where is Mode-S A5C990 registered?
Mode-S code A5C990 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 A5C990 broadcasting right now?
Yes. Mode-S A5C990 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A5C990, octal 51344620, decimal 10,865,040.
What flights does A5C990 operate?
Mode-S A5C990 has broadcast 1 distinct callsign, including N472LP.