sensors Mode-S transponder

A9A0FD

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N7198S · operated by PHOENIX COMPOSITE SOLUTIONS LLC

Hex
A9A0FD
Octal
52320375
Decimal
11,116,797
Country
US
Tail
N7198S
No current signal · last broadcast 13h ago
Flights observed
29
Distinct callsigns
1
Country
US
Last broadcast
13h ago

Last known position

Most recent position reported by Mode-S A9A0FD.

Country allocation

The ICAO 24-bit address A9A0FD 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
N7198S - 29 2026-07-13

Recent flights last 29

DateFlightRouteTakeoffLandingDuration
2026-07-13 N7198S PIR → PIR Jul 13, 21:55 UTCJul 13, 22:30 UTC35m
2026-07-13 N7198S PIR → PIR Jul 13, 20:45 UTCJul 13, 21:05 UTC20m
2026-07-10 N7198S - Jul 10, 22:55 UTCJul 10, 23:10 UTC15m
2026-07-10 N7198S - Jul 10, 21:20 UTCJul 10, 22:15 UTC55m
2026-07-10 N7198S - Jul 10, 18:00 UTCJul 10, 18:30 UTC30m
2026-07-10 N7198S - Jul 10, 13:45 UTCJul 10, 14:20 UTC35m
2026-07-10 N7198S - Jul 10, 01:15 UTCJul 10, 02:30 UTC1h 15m
2026-05-15 N7198S - May 15, 17:45 UTCMay 15, 17:55 UTC10m
2026-05-08 N7198S - May 8, 20:05 UTCMay 8, 20:40 UTC35m
2026-05-08 N7198S - May 8, 19:00 UTCMay 8, 19:15 UTC15m
2026-05-08 N7198S - May 8, 15:45 UTCMay 8, 16:00 UTC15m
2026-05-08 N7198S - May 8, 14:40 UTCMay 8, 14:50 UTC10m
2026-05-08 N7198S - May 8, 02:09 UTCMay 8, 04:19 UTC2h 10m
2026-05-07 N7198S - May 7, 16:15 UTCMay 7, 18:20 UTC2h 5m
2026-05-07 N7198S - May 7, 03:30 UTCMay 7, 04:00 UTC30m
2026-05-07 N7198S - May 7, 02:25 UTCMay 7, 02:35 UTC10m
2026-05-06 N7198S - May 6, 18:15 UTCMay 6, 18:35 UTC20m
2026-05-05 N7198S - May 5, 18:30 UTCMay 5, 19:45 UTC1h 15m
2026-05-01 N7198S - May 1, 15:55 UTCMay 1, 16:30 UTC35m
2026-04-30 N7198S - Apr 30, 19:45 UTCApr 30, 19:55 UTC10m
2026-04-30 N7198S - Apr 30, 18:50 UTCApr 30, 19:10 UTC20m
2026-04-29 N7198S - Apr 29, 19:05 UTCApr 29, 20:25 UTC1h 20m
2026-04-29 N7198S - Apr 29, 16:40 UTCApr 29, 17:30 UTC50m
2026-04-28 N7198S - Apr 28, 17:15 UTCApr 28, 17:45 UTC30m
2026-04-25 N7198S - Apr 25, 16:25 UTCApr 25, 16:40 UTC15m
2026-04-24 N7198S - Apr 24, 20:40 UTCApr 24, 21:00 UTC20m
2026-04-24 N7198S - Apr 24, 19:25 UTCApr 24, 19:35 UTC10m
2026-04-23 N7198S - Apr 23, 20:05 UTCApr 23, 20:55 UTC50m
2026-04-23 N7198S - Apr 23, 15:25 UTCApr 23, 16:20 UTC55m

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 N7198S page for operator, model, and routing details .

Mode-S A9A0FD frequently asked

What is Mode-S code A9A0FD?
A9A0FD is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N7198S.
Where is Mode-S A9A0FD registered?
Mode-S code A9A0FD 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 A9A0FD broadcasting right now?
No active broadcast right now. Last signal was 13h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A9A0FD, octal 52320375, decimal 11,116,797.
What flights does A9A0FD operate?
Mode-S A9A0FD has broadcast 1 distinct callsign, including N7198S.