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sensors Mode-S transponder

AA4FC9

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N7635W · PIPER PA-28-140/150/160/180 · operated by BRAGG CHRISTOPHER P

Hex
AA4FC9
Octal
52447711
Decimal
11,161,545
Country
US
Tail
N7635W
Type
P28A
Broadcasting now · callsign N7635W · 2,650 ft
Flights observed
238
Distinct callsigns
1
Country
US
Last broadcast
4d ago

Current position

AA4FC9 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address AA4FC9 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
N7635W - 238 2026-07-26

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 N7635W - Jul 26, 21:45 UTCJul 26, 22:15 UTC30m
2026-07-25 N7635W - Jul 25, 20:25 UTCJul 25, 21:30 UTC1h 5m
2026-07-23 N7635W - Jul 23, 22:00 UTCJul 23, 22:55 UTC55m
2026-07-23 N7635W - Jul 23, 18:50 UTCJul 23, 19:35 UTC45m
2026-07-22 N7635W - Jul 22, 23:50 UTCJul 23, 00:20 UTC30m
2026-07-22 N7635W - Jul 22, 15:40 UTCJul 22, 16:25 UTC45m
2026-07-22 N7635W - Jul 22, 01:50 UTCJul 22, 04:00 UTC2h 10m
2026-07-21 N7635W - Jul 21, 21:35 UTCJul 21, 22:55 UTC1h 20m
2026-07-21 N7635W - Jul 21, 16:00 UTCJul 21, 16:50 UTC50m
2026-07-20 N7635W - Jul 20, 19:00 UTCJul 20, 19:35 UTC35m
2026-07-20 N7635W - Jul 20, 15:55 UTCJul 20, 17:00 UTC1h 5m
2026-07-20 N7635W - Jul 20, 14:50 UTCJul 20, 15:05 UTC15m
2026-07-18 N7635W - Jul 18, 22:15 UTCJul 18, 23:30 UTC1h 15m
2026-07-18 N7635W - Jul 18, 16:35 UTCJul 18, 17:50 UTC1h 15m
2026-07-16 N7635W - Jul 16, 18:05 UTCJul 16, 18:29 UTC25m
2026-07-16 N7635W - Jul 16, 13:45 UTCJul 16, 15:14 UTC1h 30m
2026-07-15 N7635W - Jul 15, 23:10 UTCJul 15, 23:35 UTC25m
2026-07-13 N7635W - Jul 13, 20:10 UTCJul 13, 20:35 UTC25m
2026-07-13 N7635W - Jul 13, 17:55 UTCJul 13, 18:50 UTC55m
2026-07-12 N7635W - Jul 12, 12:50 UTCJul 12, 14:30 UTC1h 40m
2026-07-12 N7635W - Jul 12, 04:25 UTCJul 12, 06:20 UTC1h 55m
2026-07-12 N7635W - Jul 12, 00:40 UTCJul 12, 03:50 UTC3h 10m
2026-07-11 N7635W - Jul 11, 20:00 UTCJul 11, 21:50 UTC1h 50m
2026-07-11 N7635W - Jul 11, 16:15 UTCJul 11, 18:15 UTC2h 0m
2026-07-11 N7635W - Jul 11, 12:55 UTCJul 11, 14:40 UTC1h 45m
2026-07-10 N7635W - Jul 10, 16:40 UTCJul 10, 16:55 UTC15m
2026-07-10 N7635W - Jul 10, 16:00 UTCJul 10, 16:35 UTC35m
2026-07-10 N7635W - Jul 10, 14:50 UTCJul 10, 15:10 UTC20m
2026-07-10 N7635W - Jul 10, 13:35 UTCJul 10, 14:15 UTC40m
2026-07-09 N7635W - Jul 9, 20:50 UTCJul 9, 21:35 UTC45m
2026-07-09 N7635W - Jul 9, 16:30 UTCJul 9, 17:15 UTC45m
2026-07-09 N7635W - Jul 9, 13:15 UTCJul 9, 15:25 UTC2h 10m
2026-07-08 N7635W - Jul 8, 23:55 UTCJul 9, 01:35 UTC1h 40m
2026-07-08 N7635W - Jul 8, 18:20 UTCJul 8, 19:05 UTC45m
2026-07-08 N7635W - Jul 8, 16:05 UTCJul 8, 16:55 UTC50m
2026-07-08 N7635W - Jul 8, 13:45 UTCJul 8, 14:50 UTC1h 5m
2026-07-08 N7635W - Jul 8, 01:35 UTCJul 8, 02:20 UTC45m
2026-07-07 N7635W - Jul 7, 22:40 UTCJul 7, 23:10 UTC30m
2026-07-07 N7635W - Jul 7, 21:45 UTCJul 7, 22:10 UTC25m
2026-07-07 N7635W - Jul 7, 20:10 UTCJul 7, 20:50 UTC40m
2026-07-07 N7635W - Jul 7, 18:05 UTCJul 7, 18:45 UTC40m
2026-07-07 N7635W - Jul 7, 16:15 UTCJul 7, 17:00 UTC45m
2026-07-07 N7635W - Jul 7, 14:15 UTCJul 7, 15:15 UTC1h 0m
2026-07-06 N7635W - Jul 6, 21:50 UTCJul 6, 23:10 UTC1h 20m
2026-07-06 N7635W - Jul 6, 17:50 UTCJul 6, 18:25 UTC35m
2026-07-06 N7635W - Jul 6, 16:45 UTCJul 6, 17:10 UTC25m
2026-07-03 N7635W - Jul 3, 16:05 UTCJul 3, 16:30 UTC25m
2026-07-03 N7635W - Jul 3, 12:45 UTCJul 3, 14:40 UTC1h 55m
2026-07-02 N7635W - Jul 2, 16:50 UTCJul 2, 17:25 UTC35m
2026-07-02 N7635W - Jul 2, 14:45 UTCJul 2, 15:30 UTC45m

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 N7635W page for operator, model, and routing details .

Mode-S AA4FC9 frequently asked

What is Mode-S code AA4FC9?
AA4FC9 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N7635W.
Where is Mode-S AA4FC9 registered?
Mode-S code AA4FC9 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 AA4FC9 broadcasting right now?
Yes. Mode-S AA4FC9 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AA4FC9, octal 52447711, decimal 11,161,545.
What flights does AA4FC9 operate?
Mode-S AA4FC9 has broadcast 1 distinct callsign, including N7635W.