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sensors Mode-S transponder

AD3EC4

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N9522S · CESSNA 172R Cutlass RG · operated by SNOHOMISH FLYING SERVICE INC

Hex
AD3EC4
Octal
53237304
Decimal
11,353,796
Country
US
Tail
N9522S
Type
C72R
Broadcasting now · callsign N9522S · 825 ft
Flights observed
376
Distinct callsigns
1
Country
US
Last broadcast
Jul 26, 20:50 UTC

Current position

AD3EC4 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address AD3EC4 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
N9522S - 376 2026-07-26

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 N9522S - Jul 26, 19:45 UTCJul 26, 20:50 UTC1h 5m
2026-07-26 N9522S - Jul 26, 18:10 UTCJul 26, 18:55 UTC45m
2026-07-25 N9522S - Jul 25, 21:55 UTCJul 25, 22:40 UTC45m
2026-07-25 N9522S - Jul 25, 19:30 UTCJul 25, 20:15 UTC45m
2026-07-23 N9522S - Jul 23, 17:45 UTCJul 23, 18:35 UTC50m
2026-07-23 N9522S - Jul 23, 15:05 UTCJul 23, 16:35 UTC1h 30m
2026-07-22 N9522S - Jul 22, 23:40 UTCJul 23, 00:00 UTC20m
2026-07-22 N9522S - Jul 22, 22:30 UTCJul 22, 22:50 UTC20m
2026-07-22 N9522S - Jul 22, 19:50 UTCJul 22, 20:40 UTC50m
2026-07-22 N9522S - Jul 22, 15:10 UTCJul 22, 16:15 UTC1h 5m
2026-07-22 N9522S - Jul 22, 04:15 UTCJul 22, 05:10 UTC55m
2026-07-22 N9522S - Jul 22, 00:40 UTCJul 22, 03:10 UTC2h 30m
2026-07-21 N9522S - Jul 21, 22:45 UTCJul 21, 23:25 UTC40m
2026-07-21 N9522S - Jul 21, 21:25 UTCJul 21, 21:50 UTC25m
2026-07-21 N9522S - Jul 21, 19:10 UTCJul 21, 19:55 UTC45m
2026-07-21 N9522S - Jul 21, 17:20 UTCJul 21, 18:00 UTC40m
2026-07-21 N9522S - Jul 21, 15:05 UTCJul 21, 16:25 UTC1h 20m
2026-07-21 N9522S - Jul 21, 06:10 UTCJul 21, 06:50 UTC40m
2026-07-21 N9522S - Jul 21, 02:35 UTCJul 21, 03:10 UTC35m
2026-07-21 N9522S - Jul 21, 00:35 UTCJul 21, 01:25 UTC50m
2026-07-20 N9522S - Jul 20, 22:40 UTCJul 20, 23:55 UTC1h 15m
2026-07-20 N9522S - Jul 20, 20:30 UTCJul 20, 21:15 UTC45m
2026-07-20 N9522S - Jul 20, 18:50 UTCJul 20, 19:40 UTC50m
2026-07-20 N9522S - Jul 20, 16:25 UTCJul 20, 18:05 UTC1h 40m
2026-07-20 N9522S - Jul 20, 03:00 UTCJul 20, 03:35 UTC35m
2026-07-20 N9522S - Jul 20, 00:15 UTCJul 20, 01:35 UTC1h 20m
2026-07-19 N9522S - Jul 19, 21:25 UTCJul 19, 21:55 UTC30m
2026-07-19 N9522S - Jul 19, 20:00 UTCJul 19, 20:35 UTC35m
2026-07-18 N9522S - Jul 18, 22:50 UTCJul 18, 23:20 UTC30m
2026-07-18 N9522S - Jul 18, 17:30 UTCJul 18, 18:15 UTC45m
2026-07-18 N9522S - Jul 18, 01:50 UTCJul 18, 02:35 UTC45m
2026-07-18 N9522S - Jul 18, 00:10 UTCJul 18, 01:10 UTC1h 0m
2026-07-17 N9522S - Jul 17, 21:39 UTCJul 17, 23:10 UTC1h 30m
2026-07-17 N9522S - Jul 17, 20:00 UTCJul 17, 20:50 UTC50m
2026-07-17 N9522S - Jul 17, 17:40 UTCJul 17, 19:00 UTC1h 20m
2026-07-17 N9522S - Jul 17, 01:20 UTCJul 17, 02:15 UTC55m
2026-07-16 N9522S - Jul 16, 17:14 UTCJul 16, 18:00 UTC45m
2026-07-16 N9522S - Jul 16, 01:40 UTCJul 16, 02:45 UTC1h 5m
2026-07-16 N9522S - Jul 16, 00:05 UTCJul 16, 00:55 UTC50m
2026-07-15 N9522S - Jul 15, 22:40 UTCJul 15, 23:25 UTC45m
2026-07-15 N9522S - Jul 15, 20:25 UTCJul 15, 21:05 UTC40m
2026-07-15 N9522S - Jul 15, 18:05 UTCJul 15, 18:45 UTC40m
2026-07-15 N9522S - Jul 15, 16:10 UTCJul 15, 16:35 UTC25m
2026-07-14 N9522S - Jul 14, 22:25 UTCJul 14, 23:10 UTC44m
2026-07-14 N9522S - Jul 14, 20:50 UTCJul 14, 21:35 UTC45m
2026-07-14 N9522S - Jul 14, 16:45 UTCJul 14, 17:30 UTC45m
2026-07-14 N9522S - Jul 14, 14:40 UTCJul 14, 15:30 UTC50m
2026-07-14 N9522S - Jul 14, 01:20 UTCJul 14, 02:15 UTC55m
2026-07-13 N9522S - Jul 13, 23:50 UTCJul 14, 00:15 UTC25m
2026-07-13 N9522S - Jul 13, 21:25 UTCJul 13, 22:50 UTC1h 25m

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 N9522S page for operator, model, and routing details .

Mode-S AD3EC4 frequently asked

What is Mode-S code AD3EC4?
AD3EC4 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N9522S.
Where is Mode-S AD3EC4 registered?
Mode-S code AD3EC4 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 AD3EC4 broadcasting right now?
Yes. Mode-S AD3EC4 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AD3EC4, octal 53237304, decimal 11,353,796.
What flights does AD3EC4 operate?
Mode-S AD3EC4 has broadcast 1 distinct callsign, including N9522S.