Apparatus

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sensors Mode-S transponder

AD3A0D

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N951TF · operated by PIPER AIRCRAFT INC

Hex
AD3A0D
Octal
53235015
Decimal
11,352,589
Country
US
Tail
N951TF
Broadcasting now · callsign TRF551 · 4,900 ft
Flights observed
166
Distinct callsigns
1
Country
US
Last broadcast
2d ago

Current position

AD3A0D is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address AD3A0D 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
TRF551 - 166 2026-07-26

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 TRF551 - Jul 26, 19:00 UTCJul 26, 20:35 UTC1h 35m
2026-07-26 TRF551 - Jul 26, 17:05 UTCJul 26, 17:40 UTC35m
2026-07-25 TRF551 - Jul 25, 22:00 UTCJul 25, 23:10 UTC1h 10m
2026-07-25 TRF551 - Jul 25, 16:35 UTCJul 25, 18:05 UTC1h 30m
2026-07-24 TRF551 - Jul 24, 23:10 UTCJul 25, 00:30 UTC1h 20m
2026-07-24 TRF551 - Jul 24, 21:35 UTCJul 24, 21:45 UTC10m
2026-07-24 TRF551 - Jul 24, 16:20 UTCJul 24, 18:05 UTC1h 45m
2026-07-22 TRF551 MSC → MSC Jul 22, 13:25 UTCJul 22, 14:50 UTC1h 25m
2026-07-21 TRF551 - Jul 21, 18:15 UTCJul 21, 19:30 UTC1h 15m
2026-07-21 TRF551 - Jul 21, 14:30 UTCJul 21, 15:50 UTC1h 20m
2026-07-18 TRF551 - Jul 18, 21:40 UTCJul 18, 22:45 UTC1h 5m
2026-07-17 TRF551 - Jul 17, 22:20 UTCJul 18, 00:00 UTC1h 40m
2026-07-14 TRF551 - Jul 14, 17:45 UTCJul 14, 18:45 UTC1h 0m
2026-07-14 TRF551 - Jul 14, 16:00 UTCJul 14, 17:00 UTC1h 0m
2026-07-13 TRF551 - Jul 13, 20:50 UTCJul 13, 21:25 UTC35m
2026-07-12 TRF551 MSC → MSC Jul 12, 13:15 UTCJul 12, 14:25 UTC1h 10m
2026-07-11 TRF551 - Jul 11, 17:00 UTCJul 11, 19:25 UTC2h 25m
2026-07-11 TRF551 - Jul 11, 14:55 UTCJul 11, 16:05 UTC1h 10m
2026-07-11 TRF551 MSC → SCF Jul 11, 14:15 UTCJul 11, 14:30 UTC15m
2026-07-08 TRF551 - Jul 8, 20:40 UTCJul 8, 22:20 UTC1h 40m
2026-07-08 TRF551 - Jul 8, 17:35 UTCJul 8, 19:25 UTC1h 50m
2026-07-04 TRF551 MSC → MSC Jul 4, 02:20 UTCJul 4, 03:50 UTC1h 30m
2026-07-03 TRF551 - Jul 3, 22:05 UTCJul 3, 23:55 UTC1h 50m
2026-07-03 TRF551 - Jul 3, 19:35 UTCJul 3, 20:55 UTC1h 20m
2026-07-03 TRF551 - Jul 3, 15:40 UTCJul 3, 16:55 UTC1h 15m
2026-07-03 TRF551 MSC → MSC Jul 3, 13:55 UTCJul 3, 14:55 UTC1h 0m
2026-07-03 TRF551 - Jul 3, 02:30 UTCJul 3, 04:00 UTC1h 30m
2026-07-02 TRF551 - Jul 2, 22:05 UTCJul 2, 23:30 UTC1h 25m
2026-07-02 TRF551 - Jul 2, 19:35 UTCJul 2, 20:55 UTC1h 20m
2026-07-01 TRF551 - Jul 1, 22:25 UTCJul 1, 23:35 UTC1h 10m
2026-07-01 TRF551 - Jul 1, 20:10 UTCJul 1, 21:30 UTC1h 20m
2026-07-01 TRF551 - Jul 1, 17:45 UTCJul 1, 19:05 UTC1h 20m
2026-07-01 TRF551 - Jul 1, 15:40 UTCJul 1, 16:15 UTC35m
2026-06-30 TRF551 - Jun 30, 21:10 UTCJun 30, 22:30 UTC1h 20m
2026-06-30 TRF551 - Jun 30, 16:30 UTCJun 30, 17:00 UTC30m
2026-06-30 TRF551 - Jun 30, 14:40 UTCJun 30, 15:25 UTC45m
2026-06-29 TRF551 - Jun 29, 17:45 UTCJun 29, 19:09 UTC1h 25m
2026-06-29 TRF551 - Jun 29, 14:29 UTCJun 29, 15:49 UTC1h 20m
2026-06-29 TRF551 - Jun 29, 00:39 UTCJun 29, 00:49 UTC10m
2026-06-28 TRF551 - Jun 28, 22:04 UTCJun 28, 23:25 UTC1h 20m
2026-06-28 TRF551 - Jun 28, 19:25 UTCJun 28, 20:39 UTC1h 15m
2026-06-28 TRF551 - Jun 28, 03:29 UTCJun 28, 04:50 UTC1h 20m
2026-06-27 TRF551 - Jun 27, 22:15 UTCJun 27, 23:55 UTC1h 40m
2026-06-27 TRF551 - Jun 27, 19:59 UTCJun 27, 21:19 UTC1h 20m
2026-06-26 TRF551 MSC → MSC Jun 26, 19:04 UTCJun 26, 20:15 UTC1h 10m
2026-06-26 TRF551 - Jun 26, 16:35 UTCJun 26, 18:04 UTC1h 30m
2026-06-25 TRF551 - Jun 25, 19:29 UTCJun 25, 20:54 UTC1h 25m
2026-06-25 TRF551 - Jun 25, 16:59 UTCJun 25, 17:34 UTC35m
2026-06-24 TRF551 - Jun 24, 21:29 UTCJun 24, 23:00 UTC1h 30m
2026-06-24 TRF551 - Jun 24, 19:00 UTCJun 24, 20:44 UTC1h 45m

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 N951TF page for operator, model, and routing details .

Mode-S AD3A0D frequently asked

What is Mode-S code AD3A0D?
AD3A0D is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N951TF.
Where is Mode-S AD3A0D registered?
Mode-S code AD3A0D 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 AD3A0D broadcasting right now?
Yes. Mode-S AD3A0D is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AD3A0D, octal 53235015, decimal 11,352,589.
What flights does AD3A0D operate?
Mode-S AD3A0D has broadcast 1 distinct callsign, including TRF551.