Apparatus

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sensors Mode-S transponder

A9CC3B

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N730ND · PIPER PA-28-140/150/160/180 · operated by UNIVERSITY OF NORTH DAKOTA, JOHN D ODEGARD SCHOOL OF AEROSPACE SCIENCES

Hex
A9CC3B
Octal
52346073
Decimal
11,127,867
Country
US
Tail
N730ND
Type
P28A
No current signal · last broadcast Jul 22, 21:15 UTC
Flights observed
151
Distinct callsigns
2
Country
US
Last broadcast
Jul 22, 21:15 UTC

Last known position

Most recent position reported by Mode-S A9CC3B.

Country allocation

The ICAO 24-bit address A9CC3B 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 2 distinct

Callsign Airline Flights Last seen
NDU30M - 120 2026-07-22
NDU30 - 31 2026-05-06

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-22 NDU30M - Jul 22, 20:45 UTCJul 22, 21:15 UTC30m
2026-07-22 NDU30M - Jul 22, 15:30 UTCJul 22, 16:45 UTC1h 15m
2026-07-22 NDU30M - Jul 22, 13:20 UTCJul 22, 13:35 UTC15m
2026-07-22 NDU30M - Jul 22, 03:30 UTCJul 22, 04:45 UTC1h 15m
2026-07-21 NDU30M - Jul 21, 18:55 UTCJul 21, 19:50 UTC55m
2026-07-21 NDU30M - Jul 21, 16:20 UTCJul 21, 17:15 UTC55m
2026-07-21 NDU30M - Jul 21, 13:30 UTCJul 21, 14:30 UTC1h 0m
2026-07-20 NDU30M - Jul 20, 18:55 UTCJul 20, 19:10 UTC15m
2026-07-20 NDU30M - Jul 20, 16:05 UTCJul 20, 16:40 UTC35m
2026-07-20 NDU30M - Jul 20, 12:10 UTCJul 20, 13:20 UTC1h 10m
2026-07-18 NDU30M - Jul 18, 15:05 UTCJul 18, 16:00 UTC55m
2026-07-18 NDU30M - Jul 18, 12:35 UTCJul 18, 13:45 UTC1h 10m
2026-07-17 NDU30M - Jul 17, 17:50 UTCJul 17, 18:40 UTC50m
2026-07-17 NDU30M - Jul 17, 16:19 UTCJul 17, 16:59 UTC40m
2026-07-17 NDU30M - Jul 17, 01:05 UTCJul 17, 02:20 UTC1h 15m
2026-07-16 NDU30M - Jul 16, 15:05 UTCJul 16, 15:40 UTC35m
2026-07-16 NDU30M - Jul 16, 12:25 UTCJul 16, 12:40 UTC15m
2026-07-15 NDU30M - Jul 15, 23:05 UTCJul 15, 23:45 UTC40m
2026-07-15 NDU30M - Jul 15, 21:10 UTCJul 15, 21:25 UTC15m
2026-07-15 NDU30M - Jul 15, 19:10 UTCJul 15, 20:00 UTC50m
2026-07-15 NDU30M - Jul 15, 17:35 UTCJul 15, 18:05 UTC30m
2026-07-15 NDU30M - Jul 15, 14:45 UTCJul 15, 15:20 UTC35m
2026-07-15 NDU30M - Jul 15, 12:25 UTCJul 15, 13:35 UTC1h 10m
2026-07-15 NDU30M - Jul 15, 03:25 UTCJul 15, 04:35 UTC1h 10m
2026-07-15 NDU30M - Jul 15, 02:20 UTCJul 15, 02:30 UTC10m
2026-07-14 NDU30M - Jul 14, 23:50 UTCJul 15, 00:55 UTC1h 5m
2026-07-14 NDU30M - Jul 14, 21:35 UTCJul 14, 23:05 UTC1h 29m
2026-07-14 NDU30M - Jul 14, 19:45 UTCJul 14, 20:45 UTC1h 0m
2026-07-14 NDU30M - Jul 14, 12:15 UTCJul 14, 13:35 UTC1h 20m
2026-07-14 NDU30M - Jul 14, 03:30 UTCJul 14, 03:55 UTC25m
2026-07-13 NDU30M - Jul 13, 23:40 UTCJul 14, 02:00 UTC2h 20m
2026-07-13 NDU30M - Jul 13, 21:25 UTCJul 13, 22:15 UTC50m
2026-07-13 NDU30M - Jul 13, 17:45 UTCJul 13, 18:00 UTC15m
2026-07-13 NDU30M - Jul 13, 15:05 UTCJul 13, 15:20 UTC15m
2026-07-13 NDU30M - Jul 13, 12:05 UTCJul 13, 13:10 UTC1h 5m
2026-07-11 NDU30M - Jul 11, 20:50 UTCJul 11, 21:15 UTC25m
2026-07-11 NDU30M - Jul 11, 18:05 UTCJul 11, 19:25 UTC1h 20m
2026-07-11 NDU30M - Jul 11, 16:00 UTCJul 11, 16:30 UTC30m
2026-07-11 NDU30M - Jul 11, 01:05 UTCJul 11, 01:30 UTC25m
2026-07-10 NDU30M - Jul 10, 23:30 UTCJul 11, 00:15 UTC45m
2026-07-10 NDU30M - Jul 10, 18:30 UTCJul 10, 19:10 UTC40m
2026-07-07 NDU30M - Jul 7, 15:20 UTCJul 7, 15:35 UTC15m
2026-07-07 NDU30M - Jul 7, 13:00 UTCJul 7, 13:30 UTC30m
2026-07-07 NDU30M - Jul 7, 01:25 UTCJul 7, 02:00 UTC35m
2026-07-06 NDU30M - Jul 6, 21:25 UTCJul 6, 21:35 UTC10m
2026-07-06 NDU30M - Jul 6, 12:20 UTCJul 6, 13:25 UTC1h 5m
2026-07-02 NDU30M - Jul 2, 20:55 UTCJul 2, 21:35 UTC40m
2026-07-02 NDU30M - Jul 2, 12:30 UTCJul 2, 13:30 UTC1h 0m
2026-07-02 NDU30M - Jul 2, 02:00 UTCJul 2, 02:10 UTC10m
2026-07-01 NDU30M - Jul 1, 18:40 UTCJul 1, 19:00 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 N730ND page for operator, model, and routing details .

Mode-S A9CC3B frequently asked

What is Mode-S code A9CC3B?
A9CC3B is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N730ND.
Where is Mode-S A9CC3B registered?
Mode-S code A9CC3B 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 A9CC3B broadcasting right now?
No active broadcast right now. Last signal was Jul 22, 21:15 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A9CC3B, octal 52346073, decimal 11,127,867.
What flights does A9CC3B operate?
Mode-S A9CC3B has broadcast 2 distinct callsigns, including NDU30M, NDU30.