Apparatus

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sensors Mode-S transponder

A66046

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N51ND · CESSNA 560 Citation Ultra · operated by N51ND LLC, MY JET DIRECT SERVICE LLC

Hex
A66046
Octal
51460106
Decimal
10,903,622
Country
US
Tail
N51ND
Type
C560
No current signal · last broadcast 5d ago
Flights observed
127
Distinct callsigns
1
Country
US
Last broadcast
5d ago

Last known position

Most recent position reported by Mode-S A66046.

Country allocation

The ICAO 24-bit address A66046 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
N51ND - 127 2026-07-09

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-09 N51ND - Jul 9, 11:30 UTCJul 9, 11:40 UTC10m
2026-07-08 N51ND - Jul 8, 00:45 UTCJul 8, 03:20 UTC2h 35m
2026-07-07 N51ND - Jul 7, 16:05 UTCJul 7, 18:40 UTC2h 35m
2026-07-07 N51ND - Jul 7, 14:50 UTCJul 7, 15:10 UTC20m
2026-07-06 N51ND - Jul 6, 22:05 UTCJul 6, 22:15 UTC10m
2026-07-06 N51ND - Jul 6, 13:25 UTCJul 6, 14:20 UTC55m
2026-07-06 N51ND SUA → SUA Jul 6, 12:45 UTCJul 6, 13:10 UTC25m
2026-07-01 N51ND - Jul 1, 20:10 UTCJul 1, 21:30 UTC1h 20m
2026-07-01 N51ND - Jul 1, 12:40 UTCJul 1, 14:15 UTC1h 35m
2026-06-29 N51ND - Jun 29, 17:10 UTCJun 29, 20:15 UTC3h 5m
2026-06-29 N51ND SUA → GRB Jun 29, 13:14 UTCJun 29, 16:29 UTC3h 15m
2026-06-27 N51ND - Jun 27, 22:55 UTCJun 28, 00:50 UTC1h 55m
2026-06-27 N51ND - Jun 27, 19:34 UTCJun 27, 21:40 UTC2h 5m
2026-06-25 N51ND - Jun 25, 22:59 UTCJun 26, 00:30 UTC1h 30m
2026-06-25 N51ND - Jun 25, 21:05 UTCJun 25, 22:10 UTC1h 5m
2026-06-25 N51ND - Jun 25, 18:10 UTCJun 25, 20:25 UTC2h 15m
2026-06-25 N51ND - Jun 25, 14:59 UTCJun 25, 17:14 UTC2h 15m
2026-06-22 N51ND - Jun 22, 18:40 UTCJun 22, 21:19 UTC2h 40m
2026-06-22 N51ND - Jun 22, 14:40 UTCJun 22, 17:34 UTC2h 55m
2026-06-22 N51ND - Jun 22, 11:14 UTCJun 22, 13:29 UTC2h 15m
2026-06-18 N51ND TEB → SUA Jun 18, 20:30 UTCJun 19, 00:24 UTC3h 54m
2026-06-18 N51ND - Jun 18, 16:50 UTCJun 18, 18:35 UTC1h 45m
2026-06-18 N51ND - Jun 18, 14:45 UTCJun 18, 16:15 UTC1h 30m
2026-06-17 N51ND - Jun 17, 21:55 UTCJun 18, 00:40 UTC2h 45m
2026-06-17 N51ND - Jun 17, 17:35 UTCJun 17, 19:00 UTC1h 25m
2026-06-16 N51ND - Jun 16, 16:20 UTCJun 16, 17:59 UTC1h 40m
2026-06-16 N51ND - Jun 16, 12:14 UTCJun 16, 15:20 UTC3h 5m
2026-06-14 N51ND - Jun 14, 15:35 UTCJun 14, 16:05 UTC30m
2026-06-14 N51ND - Jun 14, 13:10 UTCJun 14, 14:40 UTC1h 30m
2026-06-14 N51ND - Jun 14, 10:25 UTCJun 14, 11:50 UTC1h 25m
2026-06-13 N51ND SUA → SUA Jun 13, 14:20 UTCJun 13, 14:30 UTC10m
2026-06-12 N51ND - Jun 12, 03:25 UTCJun 12, 03:50 UTC25m
2026-06-12 N51ND - Jun 12, 01:30 UTCJun 12, 03:15 UTC1h 45m
2026-06-11 N51ND - Jun 11, 17:25 UTCJun 11, 18:40 UTC1h 15m
2026-06-11 N51ND - Jun 11, 15:40 UTCJun 11, 16:20 UTC40m
2026-06-09 N51ND - Jun 9, 17:05 UTCJun 9, 17:35 UTC30m
2026-06-08 N51ND - Jun 8, 16:00 UTCJun 8, 18:10 UTC2h 10m
2026-06-08 N51ND - Jun 8, 12:55 UTCJun 8, 15:04 UTC2h 10m
2026-06-08 N51ND - Jun 8, 11:55 UTCJun 8, 12:10 UTC15m
2026-06-07 N51ND - Jun 7, 16:35 UTCJun 7, 18:40 UTC2h 5m
2026-06-07 N51ND - Jun 7, 12:50 UTCJun 7, 15:05 UTC2h 15m
2026-06-07 N51ND - Jun 7, 11:40 UTCJun 7, 11:50 UTC10m
2026-06-06 N51ND - Jun 6, 20:10 UTCJun 6, 22:39 UTC2h 30m
2026-06-06 N51ND - Jun 6, 11:49 UTCJun 6, 14:40 UTC2h 50m
2026-06-04 N51ND - Jun 4, 18:20 UTCJun 4, 22:10 UTC3h 50m
2026-06-04 N51ND - Jun 4, 13:05 UTCJun 4, 16:45 UTC3h 40m
2026-06-04 N51ND - Jun 4, 11:45 UTCJun 4, 12:15 UTC30m
2026-06-02 N51ND - Jun 2, 19:55 UTCJun 2, 21:00 UTC1h 5m
2026-06-02 N51ND - Jun 2, 18:00 UTCJun 2, 19:15 UTC1h 15m
2026-06-02 N51ND - Jun 2, 15:45 UTCJun 2, 16:05 UTC20m

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 N51ND page for operator, model, and routing details .

Mode-S A66046 frequently asked

What is Mode-S code A66046?
A66046 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N51ND.
Where is Mode-S A66046 registered?
Mode-S code A66046 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 A66046 broadcasting right now?
No active broadcast right now. Last signal was 5d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A66046, octal 51460106, decimal 10,903,622.
What flights does A66046 operate?
Mode-S A66046 has broadcast 1 distinct callsign, including N51ND.