Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

A4566A

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N379ND · operated by UND AEROSPACE FOUNDATION

Hex
A4566A
Octal
51053152
Decimal
10,770,026
Country
US
Tail
N379ND
Type
P28A
No current signal · last broadcast 4d ago
Flights observed
204
Distinct callsigns
1
Country
US
Last broadcast
4d ago

Last known position

Most recent position reported by Mode-S A4566A.

Country allocation

The ICAO 24-bit address A4566A 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
NDU379 - 204 2026-07-09

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-09 NDU379 - Jul 9, 13:05 UTCJul 9, 15:20 UTC2h 15m
2026-07-08 NDU379 - Jul 8, 14:40 UTCJul 8, 16:25 UTC1h 45m
2026-07-07 NDU379 - Jul 7, 17:05 UTCJul 7, 19:00 UTC1h 55m
2026-07-07 NDU379 - Jul 7, 14:25 UTCJul 7, 15:50 UTC1h 25m
2026-07-07 NDU379 - Jul 7, 02:05 UTCJul 7, 03:30 UTC1h 25m
2026-07-06 NDU379 - Jul 6, 19:10 UTCJul 6, 19:45 UTC35m
2026-07-06 NDU379 - Jul 6, 14:05 UTCJul 6, 16:30 UTC2h 25m
2026-07-05 NDU379 - Jul 5, 21:05 UTCJul 5, 23:45 UTC2h 40m
2026-07-05 NDU379 - Jul 5, 18:15 UTCJul 5, 18:50 UTC35m
2026-07-05 NDU379 - Jul 5, 16:00 UTCJul 5, 17:20 UTC1h 20m
2026-07-05 NDU379 - Jul 5, 13:30 UTCJul 5, 14:50 UTC1h 20m
2026-07-03 NDU379 - Jul 3, 22:55 UTCJul 3, 23:35 UTC40m
2026-07-03 NDU379 - Jul 3, 19:45 UTCJul 3, 21:00 UTC1h 15m
2026-07-03 NDU379 AZA → AZA Jul 3, 17:05 UTCJul 3, 17:40 UTC35m
2026-07-03 NDU379 - Jul 3, 16:00 UTCJul 3, 16:25 UTC25m
2026-07-03 NDU379 - Jul 3, 15:00 UTCJul 3, 15:25 UTC25m
2026-07-03 NDU379 - Jul 3, 13:00 UTCJul 3, 14:10 UTC1h 10m
2026-07-02 NDU379 - Jul 2, 21:00 UTCJul 3, 00:05 UTC3h 5m
2026-07-02 NDU379 - Jul 2, 18:20 UTCJul 2, 19:25 UTC1h 5m
2026-07-02 NDU379 - Jul 2, 15:20 UTCJul 2, 16:45 UTC1h 25m
2026-07-02 NDU379 AZA → AZA Jul 2, 12:50 UTCJul 2, 13:50 UTC1h 0m
2026-07-02 NDU379 - Jul 2, 04:10 UTCJul 2, 04:30 UTC20m
2026-07-02 NDU379 - Jul 2, 01:10 UTCJul 2, 02:30 UTC1h 20m
2026-07-01 NDU379 - Jul 1, 19:20 UTCJul 1, 21:00 UTC1h 40m
2026-07-01 NDU379 - Jul 1, 16:30 UTCJul 1, 17:55 UTC1h 25m
2026-07-01 NDU379 AZA → AZA Jul 1, 13:05 UTCJul 1, 15:05 UTC2h 0m
2026-06-30 NDU379 - Jun 30, 15:40 UTCJun 30, 17:25 UTC1h 45m
2026-06-30 NDU379 - Jun 30, 13:10 UTCJun 30, 14:30 UTC1h 20m
2026-06-29 NDU379 AZA → AZA Jun 29, 19:05 UTCJun 29, 19:20 UTC15m
2026-06-29 NDU379 - Jun 29, 13:19 UTCJun 29, 15:19 UTC2h 0m
2026-06-28 NDU379 - Jun 28, 18:10 UTCJun 28, 19:20 UTC1h 10m
2026-06-28 NDU379 - Jun 28, 14:50 UTCJun 28, 16:25 UTC1h 35m
2026-06-28 NDU379 AZA → AZA Jun 28, 01:29 UTCJun 28, 03:14 UTC1h 45m
2026-06-27 NDU379 - Jun 27, 14:00 UTCJun 27, 15:10 UTC1h 10m
2026-06-26 NDU379 - Jun 26, 16:54 UTCJun 26, 17:35 UTC40m
2026-06-26 NDU379 - Jun 26, 13:45 UTCJun 26, 15:15 UTC1h 30m
2026-06-25 NDU379 - Jun 25, 17:39 UTCJun 25, 18:24 UTC45m
2026-06-25 NDU379 - Jun 25, 13:59 UTCJun 25, 15:54 UTC1h 55m
2026-06-24 NDU379 AZA → AZA Jun 24, 17:50 UTCJun 24, 18:50 UTC1h 0m
2026-06-24 NDU379 AZA → AZA Jun 24, 14:50 UTCJun 24, 16:19 UTC1h 30m
2026-06-23 NDU379 - Jun 23, 17:09 UTCJun 23, 18:14 UTC1h 5m
2026-06-23 NDU379 - Jun 23, 14:19 UTCJun 23, 15:55 UTC1h 35m
2026-06-23 NDU379 AZA → AZA Jun 23, 03:45 UTCJun 23, 04:35 UTC50m
2026-06-22 NDU379 - Jun 22, 18:54 UTCJun 22, 20:24 UTC1h 30m
2026-06-22 NDU379 - Jun 22, 14:24 UTCJun 22, 16:20 UTC1h 55m
2026-06-20 NDU379 - Jun 20, 15:14 UTCJun 20, 16:55 UTC1h 40m
2026-06-19 NDU379 - Jun 19, 18:20 UTCJun 19, 19:19 UTC1h 0m
2026-06-19 NDU379 - Jun 19, 15:19 UTCJun 19, 16:44 UTC1h 25m
2026-06-18 NDU379 - Jun 18, 17:30 UTCJun 18, 19:40 UTC2h 10m
2026-06-12 NDU379 - Jun 12, 02:10 UTCJun 12, 03:30 UTC1h 20m

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 N379ND page for operator, model, and routing details .

Mode-S A4566A frequently asked

What is Mode-S code A4566A?
A4566A is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N379ND.
Where is Mode-S A4566A registered?
Mode-S code A4566A 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 A4566A broadcasting right now?
No active broadcast right now. Last signal was 4d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A4566A, octal 51053152, decimal 10,770,026.
What flights does A4566A operate?
Mode-S A4566A has broadcast 1 distinct callsign, including NDU379.