Apparatus

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sensors Mode-S transponder

A4D92D

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N411PS · PITTS S-2 Special · operated by 4D AEROSPORTS INC

Hex
A4D92D
Octal
51154455
Decimal
10,803,501
Country
US
Tail
N411PS
Type
PTS2
No current signal · last broadcast Jul 23, 17:55 UTC
Flights observed
33
Distinct callsigns
1
Country
US
Last broadcast
Jul 23, 17:55 UTC

Last known position

Most recent position reported by Mode-S A4D92D.

Country allocation

The ICAO 24-bit address A4D92D 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
N411PS - 33 2026-07-23

Recent flights last 33

DateFlightRouteTakeoffLandingDuration
2026-07-23 N411PS - Jul 23, 17:40 UTCJul 23, 17:55 UTC15m
2026-07-23 N411PS - Jul 23, 16:15 UTCJul 23, 16:35 UTC20m
2026-07-20 N411PS - Jul 20, 16:00 UTCJul 20, 17:50 UTC1h 50m
2026-07-11 N411PS - Jul 11, 19:35 UTCJul 11, 20:10 UTC35m
2026-07-08 N411PS - Jul 8, 19:20 UTCJul 8, 19:35 UTC15m
2026-07-08 N411PS - Jul 8, 17:05 UTCJul 8, 18:25 UTC1h 20m
2026-06-29 N411PS - Jun 29, 16:39 UTCJun 29, 17:14 UTC35m
2026-06-29 N411PS - Jun 29, 00:00 UTCJun 29, 00:20 UTC20m
2026-06-24 N411PS - Jun 24, 17:50 UTCJun 24, 18:15 UTC25m
2026-06-24 N411PS - Jun 24, 14:24 UTCJun 24, 14:55 UTC30m
2026-06-20 N411PS - Jun 20, 16:59 UTCJun 20, 17:29 UTC30m
2026-06-20 N411PS - Jun 20, 12:19 UTCJun 20, 12:50 UTC30m
2026-06-17 N411PS - Jun 17, 19:00 UTCJun 17, 19:30 UTC30m
2026-06-17 N411PS - Jun 17, 17:50 UTCJun 17, 18:15 UTC25m
2026-06-17 N411PS - Jun 17, 15:10 UTCJun 17, 15:35 UTC25m
2026-06-17 N411PS - Jun 17, 13:35 UTCJun 17, 14:05 UTC30m
2026-06-16 N411PS ANP → ANP Jun 16, 13:55 UTCJun 16, 14:35 UTC40m
2026-06-15 N411PS - Jun 15, 13:45 UTCJun 15, 14:20 UTC35m
2026-06-14 N411PS - Jun 14, 13:45 UTCJun 14, 14:25 UTC40m
2026-06-13 N411PS - Jun 13, 18:30 UTCJun 13, 19:10 UTC40m
2026-06-13 N411PS - Jun 13, 13:55 UTCJun 13, 14:40 UTC45m
2026-06-12 N411PS ANP → ANP Jun 12, 14:55 UTCJun 12, 15:35 UTC40m
2026-06-05 N411PS ANP → ANP Jun 5, 20:50 UTCJun 5, 21:30 UTC40m
2026-06-04 N411PS - Jun 4, 15:30 UTCJun 4, 16:05 UTC35m
2026-06-03 N411PS - Jun 3, 19:50 UTCJun 3, 20:00 UTC10m
2026-05-31 N411PS - May 31, 20:10 UTCMay 31, 20:45 UTC35m
2026-05-31 N411PS - May 31, 15:05 UTCMay 31, 15:55 UTC50m
2026-05-26 N411PS - May 26, 21:25 UTCMay 26, 22:09 UTC45m
2026-05-10 N411PS - May 10, 19:15 UTCMay 10, 19:50 UTC35m
2026-05-10 N411PS - May 10, 13:14 UTCMay 10, 13:44 UTC30m
2026-05-09 N411PS - May 9, 21:30 UTCMay 9, 22:05 UTC35m
2026-05-09 N411PS - May 9, 15:40 UTCMay 9, 16:10 UTC30m
2026-05-02 N411PS ANP → ANP May 2, 18:50 UTCMay 2, 19:05 UTC15m

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 N411PS page for operator, model, and routing details .

Mode-S A4D92D frequently asked

What is Mode-S code A4D92D?
A4D92D is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N411PS.
Where is Mode-S A4D92D registered?
Mode-S code A4D92D 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 A4D92D broadcasting right now?
No active broadcast right now. Last signal was Jul 23, 17:55 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A4D92D, octal 51154455, decimal 10,803,501.
What flights does A4D92D operate?
Mode-S A4D92D has broadcast 1 distinct callsign, including N411PS.