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sensors Mode-S transponder

AD4891

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N955PT · CESSNA 172 Skyhawk · operated by CAPPE INVESTMENT GROUP LLC

Hex
AD4891
Octal
53244221
Decimal
11,356,305
Country
US
Tail
N955PT
Type
C172
Broadcasting now · callsign N955PT · 400 ft
Flights observed
219
Distinct callsigns
1
Country
US
Last broadcast
Jul 18, 22:05 UTC

Current position

AD4891 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address AD4891 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
N955PT - 219 2026-07-18

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-18 N955PT - Jul 18, 20:35 UTCJul 18, 22:05 UTC1h 30m
2026-07-17 N955PT TMB → TMB Jul 17, 23:35 UTCJul 18, 00:45 UTC1h 10m
2026-07-17 N955PT TMB → TMB Jul 17, 15:35 UTCJul 17, 16:44 UTC1h 10m
2026-07-17 N955PT TMB → TMB Jul 17, 11:39 UTCJul 17, 12:40 UTC1h 0m
2026-07-17 N955PT TMB → TMB Jul 17, 09:15 UTCJul 17, 11:00 UTC1h 45m
2026-07-16 N955PT - Jul 16, 17:45 UTCJul 16, 18:59 UTC1h 15m
2026-07-16 N955PT TMB → TMB Jul 16, 15:49 UTCJul 16, 17:00 UTC1h 10m
2026-07-16 N955PT TMB → TMB Jul 16, 13:54 UTCJul 16, 15:05 UTC1h 10m
2026-07-16 N955PT - Jul 16, 10:50 UTCJul 16, 11:54 UTC1h 5m
2026-07-16 N955PT - Jul 16, 00:50 UTCJul 16, 02:35 UTC1h 45m
2026-07-15 N955PT - Jul 15, 21:50 UTCJul 15, 23:45 UTC1h 55m
2026-07-15 N955PT TMB → TMB Jul 15, 18:00 UTCJul 15, 19:05 UTC1h 5m
2026-07-15 N955PT TMB → TMB Jul 15, 16:05 UTCJul 15, 16:55 UTC50m
2026-07-15 N955PT - Jul 15, 13:45 UTCJul 15, 14:50 UTC1h 5m
2026-07-14 N955PT - Jul 14, 19:30 UTCJul 14, 20:30 UTC1h 0m
2026-07-14 N955PT TMB → TMB Jul 14, 13:35 UTCJul 14, 14:40 UTC1h 5m
2026-07-14 N955PT TMB → TMB Jul 14, 11:40 UTCJul 14, 12:50 UTC1h 10m
2026-07-13 N955PT - Jul 13, 19:45 UTCJul 13, 20:45 UTC1h 0m
2026-07-11 N955PT - Jul 11, 23:45 UTCJul 12, 00:20 UTC35m
2026-07-11 N955PT - Jul 11, 19:45 UTCJul 11, 20:45 UTC1h 0m
2026-07-11 N955PT - Jul 11, 01:30 UTCJul 11, 02:00 UTC30m
2026-07-10 N955PT TMB → TMB Jul 10, 23:30 UTCJul 11, 00:35 UTC1h 5m
2026-07-10 N955PT TMB → TMB Jul 10, 21:20 UTCJul 10, 22:40 UTC1h 20m
2026-07-10 N955PT TMB → TMB Jul 10, 13:50 UTCJul 10, 14:50 UTC1h 0m
2026-07-10 N955PT - Jul 10, 11:35 UTCJul 10, 12:40 UTC1h 5m
2026-07-10 N955PT TMB → TMB Jul 10, 01:45 UTCJul 10, 02:20 UTC35m
2026-07-09 N955PT - Jul 9, 21:45 UTCJul 9, 22:50 UTC1h 5m
2026-07-09 N955PT - Jul 9, 20:00 UTCJul 9, 20:30 UTC30m
2026-07-09 N955PT TMB → TMB Jul 9, 13:35 UTCJul 9, 14:35 UTC1h 0m
2026-07-09 N955PT - Jul 9, 11:50 UTCJul 9, 12:50 UTC1h 0m
2026-07-08 N955PT - Jul 8, 23:45 UTCJul 9, 01:00 UTC1h 15m
2026-07-08 N955PT TMB → TMB Jul 8, 19:45 UTCJul 8, 20:45 UTC1h 0m
2026-07-08 N955PT TMB → TMB Jul 8, 17:55 UTCJul 8, 19:00 UTC1h 5m
2026-07-08 N955PT TMB → TMB Jul 8, 15:35 UTCJul 8, 16:55 UTC1h 20m
2026-07-08 N955PT - Jul 8, 13:55 UTCJul 8, 14:40 UTC45m
2026-07-07 N955PT - Jul 7, 16:05 UTCJul 7, 17:00 UTC55m
2026-07-07 N955PT TMB → TMB Jul 7, 13:35 UTCJul 7, 14:40 UTC1h 5m
2026-07-07 N955PT - Jul 7, 11:50 UTCJul 7, 12:45 UTC55m
2026-07-06 N955PT TMB → TMB Jul 6, 22:45 UTCJul 6, 23:50 UTC1h 5m
2026-07-06 N955PT - Jul 6, 12:25 UTCJul 6, 12:55 UTC30m
2026-07-06 N955PT - Jul 6, 11:50 UTCJul 6, 12:20 UTC30m
2026-07-04 N955PT - Jul 4, 16:15 UTCJul 4, 16:25 UTC10m
2026-07-04 N955PT - Jul 4, 14:40 UTCJul 4, 15:45 UTC1h 5m
2026-07-03 N955PT - Jul 3, 17:10 UTCJul 3, 17:25 UTC15m
2026-07-03 N955PT - Jul 3, 13:05 UTCJul 3, 13:20 UTC15m
2026-07-03 N955PT - Jul 3, 01:20 UTCJul 3, 02:50 UTC1h 30m
2026-07-02 N955PT - Jul 2, 22:50 UTCJul 3, 00:15 UTC1h 25m
2026-07-02 N955PT TMB → TMB Jul 2, 18:00 UTCJul 2, 18:25 UTC25m
2026-06-29 N955PT PPM → TMB Jun 29, 19:24 UTCJun 29, 19:54 UTC30m
2026-06-29 N955PT TMB → PPM Jun 29, 17:55 UTCJun 29, 18:25 UTC30m

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 N955PT page for operator, model, and routing details .

Mode-S AD4891 frequently asked

What is Mode-S code AD4891?
AD4891 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N955PT.
Where is Mode-S AD4891 registered?
Mode-S code AD4891 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 AD4891 broadcasting right now?
Yes. Mode-S AD4891 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AD4891, octal 53244221, decimal 11,356,305.
What flights does AD4891 operate?
Mode-S AD4891 has broadcast 1 distinct callsign, including N955PT.