Apparatus

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sensors Mode-S transponder

AD3E85

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N9520Z · CESSNA 172 Skyhawk · operated by K2 AVIATION LLC

Hex
AD3E85
Octal
53237205
Decimal
11,353,733
Country
US
Tail
N9520Z
Type
C172
No current signal · last broadcast 15h ago
Flights observed
172
Distinct callsigns
1
Country
US
Last broadcast
15h ago

Last known position

Most recent position reported by Mode-S AD3E85.

Country allocation

The ICAO 24-bit address AD3E85 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
N9520Z - 172 2026-07-13

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-13 N9520Z FRG → FRG Jul 13, 18:25 UTCJul 13, 19:50 UTC1h 25m
2026-07-13 N9520Z - Jul 13, 15:15 UTCJul 13, 17:00 UTC1h 45m
2026-07-12 N9520Z - Jul 12, 20:05 UTCJul 12, 21:10 UTC1h 5m
2026-07-12 N9520Z - Jul 12, 15:25 UTCJul 12, 16:55 UTC1h 30m
2026-07-11 N9520Z FRG → FRG Jul 11, 15:20 UTCJul 11, 16:45 UTC1h 25m
2026-07-10 N9520Z FRG → FRG Jul 10, 17:20 UTCJul 10, 18:50 UTC1h 30m
2026-07-09 N9520Z FRG → FRG Jul 9, 15:45 UTCJul 9, 16:20 UTC35m
2026-07-09 N9520Z FRG → FRG Jul 9, 11:25 UTCJul 9, 12:15 UTC50m
2026-07-08 N9520Z FRG → FRG Jul 8, 19:45 UTCJul 8, 21:45 UTC2h 0m
2026-07-08 N9520Z - Jul 8, 15:20 UTCJul 8, 16:10 UTC50m
2026-07-08 N9520Z - Jul 8, 13:20 UTCJul 8, 14:20 UTC1h 0m
2026-07-03 N9520Z - Jul 3, 13:50 UTCJul 3, 14:30 UTC40m
2026-07-03 N9520Z - Jul 3, 11:15 UTCJul 3, 12:15 UTC1h 0m
2026-07-03 N9520Z - Jul 3, 01:05 UTCJul 3, 04:20 UTC3h 15m
2026-07-02 N9520Z - Jul 2, 15:55 UTCJul 2, 16:35 UTC40m
2026-07-02 N9520Z - Jul 2, 11:35 UTCJul 2, 12:05 UTC30m
2026-07-02 N9520Z - Jul 2, 11:20 UTCJul 2, 11:30 UTC10m
2026-06-26 N9520Z - Jun 26, 17:35 UTCJun 26, 19:04 UTC1h 30m
2026-06-26 N9520Z - Jun 26, 15:29 UTCJun 26, 16:54 UTC1h 25m
2026-06-26 N9520Z - Jun 26, 13:10 UTCJun 26, 14:05 UTC55m
2026-06-26 N9520Z FRG → FRG Jun 26, 10:50 UTCJun 26, 12:19 UTC1h 30m
2026-06-25 N9520Z - Jun 25, 17:44 UTCJun 25, 18:55 UTC1h 10m
2026-06-25 N9520Z FRG → FRG Jun 25, 15:24 UTCJun 25, 16:35 UTC1h 10m
2026-06-25 N9520Z FRG → FRG Jun 25, 13:14 UTCJun 25, 14:34 UTC1h 20m
2026-06-25 N9520Z - Jun 25, 11:25 UTCJun 25, 11:59 UTC35m
2026-06-24 N9520Z - Jun 24, 19:49 UTCJun 24, 21:09 UTC1h 20m
2026-06-24 N9520Z FRG → FRG Jun 24, 15:39 UTCJun 24, 16:59 UTC1h 20m
2026-06-24 N9520Z - Jun 24, 13:14 UTCJun 24, 14:24 UTC1h 10m
2026-06-24 N9520Z MHT → FRG Jun 24, 04:20 UTCJun 24, 06:04 UTC1h 45m
2026-06-23 N9520Z - Jun 23, 23:10 UTCJun 24, 00:55 UTC1h 45m
2026-06-19 N9520Z FRG → FRG Jun 19, 13:34 UTCJun 19, 14:24 UTC50m
2026-06-16 N9520Z FRG → FRG Jun 16, 17:10 UTCJun 16, 18:35 UTC1h 25m
2026-06-16 N9520Z FRG → FRG Jun 16, 15:09 UTCJun 16, 15:24 UTC15m
2026-06-15 N9520Z - Jun 15, 17:59 UTCJun 15, 18:55 UTC55m
2026-06-14 N9520Z - Jun 14, 13:10 UTCJun 14, 14:20 UTC1h 10m
2026-06-13 N9520Z FRG → FRG Jun 13, 21:40 UTCJun 13, 22:35 UTC55m
2026-06-13 N9520Z - Jun 13, 19:55 UTCJun 13, 20:45 UTC50m
2026-06-13 N9520Z - Jun 13, 17:55 UTCJun 13, 19:10 UTC1h 15m
2026-06-13 N9520Z - Jun 13, 15:20 UTCJun 13, 16:20 UTC1h 0m
2026-06-13 N9520Z - Jun 13, 11:25 UTCJun 13, 12:20 UTC55m
2026-06-12 N9520Z FRG → FRG Jun 12, 18:01 UTCJun 12, 19:00 UTC1h 0m
2026-06-12 N9520Z FRG → FRG Jun 12, 11:10 UTCJun 12, 12:20 UTC1h 10m
2026-06-11 N9520Z - Jun 11, 20:20 UTCJun 11, 21:10 UTC50m
2026-06-11 N9520Z - Jun 11, 17:40 UTCJun 11, 19:00 UTC1h 20m
2026-06-07 N9520Z - Jun 7, 16:10 UTCJun 7, 17:15 UTC1h 5m
2026-06-07 N9520Z FRG → FRG Jun 7, 13:25 UTCJun 7, 14:40 UTC1h 15m
2026-06-06 N9520Z FRG → FRG Jun 6, 17:54 UTCJun 6, 18:59 UTC1h 5m
2026-06-06 N9520Z FRG → FRG Jun 6, 11:19 UTCJun 6, 12:20 UTC1h 0m
2026-06-05 N9520Z FRG → FRG Jun 5, 18:50 UTCJun 5, 19:00 UTC10m
2026-06-05 N9520Z FRG → FRG Jun 5, 16:35 UTCJun 5, 17:10 UTC35m

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 N9520Z page for operator, model, and routing details .

Mode-S AD3E85 frequently asked

What is Mode-S code AD3E85?
AD3E85 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N9520Z.
Where is Mode-S AD3E85 registered?
Mode-S code AD3E85 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 AD3E85 broadcasting right now?
No active broadcast right now. Last signal was 15h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AD3E85, octal 53237205, decimal 11,353,733.
What flights does AD3E85 operate?
Mode-S AD3E85 has broadcast 1 distinct callsign, including N9520Z.