Apparatus

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sensors Mode-S transponder

A7A90D

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N593FD · PILATUS PC-12 · operated by N223EA LLC

Hex
A7A90D
Octal
51724415
Decimal
10,987,789
Country
US
Tail
N593FD
Type
PC12
No current signal · last broadcast 1d ago
Flights observed
110
Distinct callsigns
1
Country
US
Last broadcast
1d ago

Last known position

Most recent position reported by Mode-S A7A90D.

Country allocation

The ICAO 24-bit address A7A90D 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
N593FD - 110 2026-07-19

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-19 N593FD - Jul 19, 22:35 UTCJul 19, 23:25 UTC50m
2026-07-19 N593FD - Jul 19, 21:10 UTCJul 19, 22:05 UTC55m
2026-07-19 N593FD - Jul 19, 18:55 UTCJul 19, 20:30 UTC1h 35m
2026-07-19 N593FD - Jul 19, 13:55 UTCJul 19, 15:15 UTC1h 20m
2026-07-19 N593FD - Jul 19, 12:25 UTCJul 19, 13:15 UTC50m
2026-07-15 N593FD - Jul 15, 18:35 UTCJul 15, 19:25 UTC50m
2026-07-15 N593FD - Jul 15, 16:15 UTCJul 15, 17:50 UTC1h 35m
2026-07-15 N593FD - Jul 15, 14:30 UTCJul 15, 15:30 UTC1h 0m
2026-07-15 N593FD - Jul 15, 12:55 UTCJul 15, 13:50 UTC55m
2026-07-14 N593FD TPA → TVI Jul 14, 20:55 UTCJul 14, 21:50 UTC55m
2026-07-14 N593FD - Jul 14, 17:25 UTCJul 14, 18:15 UTC50m
2026-07-06 N593FD - Jul 6, 16:05 UTCJul 6, 17:25 UTC1h 20m
2026-07-06 N593FD - Jul 6, 14:30 UTCJul 6, 14:45 UTC15m
2026-07-06 N593FD - Jul 6, 12:45 UTCJul 6, 13:10 UTC25m
2026-07-05 N593FD - Jul 5, 19:10 UTCJul 5, 20:25 UTC1h 15m
2026-07-01 N593FD - Jul 1, 20:50 UTCJul 1, 22:50 UTC2h 0m
2026-06-30 N593FD - Jun 30, 17:45 UTCJun 30, 18:05 UTC20m
2026-06-30 N593FD - Jun 30, 15:40 UTCJun 30, 16:40 UTC1h 0m
2026-06-30 N593FD - Jun 30, 13:30 UTCJun 30, 14:40 UTC1h 10m
2026-06-27 N593FD - Jun 27, 17:59 UTCJun 27, 19:45 UTC1h 45m
2026-06-27 N593FD - Jun 27, 16:04 UTCJun 27, 17:20 UTC1h 15m
2026-06-25 N593FD - Jun 25, 22:59 UTCJun 26, 00:10 UTC1h 10m
2026-06-25 N593FD - Jun 25, 21:29 UTCJun 25, 22:04 UTC35m
2026-06-25 N593FD - Jun 25, 19:59 UTCJun 25, 21:05 UTC1h 5m
2026-06-25 N593FD - Jun 25, 18:29 UTCJun 25, 19:24 UTC55m
2026-06-22 N593FD - Jun 22, 22:05 UTCJun 22, 22:30 UTC25m
2026-06-22 N593FD - Jun 22, 19:00 UTCJun 22, 20:19 UTC1h 20m
2026-06-22 N593FD - Jun 22, 17:20 UTCJun 22, 18:19 UTC1h 0m
2026-06-22 N593FD - Jun 22, 10:40 UTCJun 22, 11:30 UTC50m
2026-06-17 N593FD - Jun 17, 16:25 UTCJun 17, 17:05 UTC40m
2026-06-17 N593FD - Jun 17, 11:25 UTCJun 17, 12:20 UTC55m
2026-06-14 N593FD TPA → TVI Jun 14, 22:05 UTCJun 14, 22:55 UTC50m
2026-06-14 N593FD - Jun 14, 19:45 UTCJun 14, 20:40 UTC55m
2026-06-11 N593FD - Jun 11, 19:55 UTCJun 11, 21:10 UTC1h 15m
2026-06-11 N593FD - Jun 11, 12:00 UTCJun 11, 12:50 UTC50m
2026-06-11 N593FD TVI → BGE Jun 11, 11:35 UTCJun 11, 11:50 UTC15m
2026-06-08 N593FD ATL → TVI Jun 8, 23:20 UTCJun 9, 00:00 UTC40m
2026-06-08 N593FD - Jun 8, 19:00 UTCJun 8, 20:05 UTC1h 5m
2026-06-05 N593FD - Jun 5, 15:35 UTCJun 5, 16:50 UTC1h 15m
2026-06-05 N593FD - Jun 5, 14:35 UTCJun 5, 14:55 UTC20m
2026-06-05 N593FD - Jun 5, 12:20 UTCJun 5, 13:15 UTC55m
2026-06-05 N593FD - Jun 5, 10:30 UTCJun 5, 11:20 UTC50m
2026-06-04 N593FD ATL → TVI Jun 4, 23:20 UTCJun 5, 00:05 UTC45m
2026-06-04 N593FD - Jun 4, 21:15 UTCJun 4, 22:15 UTC1h 0m
2026-06-04 N593FD - Jun 4, 17:50 UTCJun 4, 19:25 UTC1h 35m
2026-06-04 N593FD - Jun 4, 13:35 UTCJun 4, 15:15 UTC1h 40m
2026-06-03 N593FD - Jun 3, 17:05 UTCJun 3, 17:55 UTC50m
2026-06-03 N593FD - Jun 3, 11:00 UTCJun 3, 11:55 UTC55m
2026-06-01 N593FD - Jun 1, 19:10 UTCJun 1, 22:05 UTC2h 55m
2026-05-31 N593FD - May 31, 18:50 UTCMay 31, 21:45 UTC2h 55m

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 N593FD page for operator, model, and routing details .

Mode-S A7A90D frequently asked

What is Mode-S code A7A90D?
A7A90D is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N593FD.
Where is Mode-S A7A90D registered?
Mode-S code A7A90D 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 A7A90D 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 A7A90D, octal 51724415, decimal 10,987,789.
What flights does A7A90D operate?
Mode-S A7A90D has broadcast 1 distinct callsign, including N593FD.