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sensors Mode-S transponder

A4DD19

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N412RV · VANS RV-12 · operated by VANS FLYING CLUB LLC

Hex
A4DD19
Octal
51156431
Decimal
10,804,505
Country
US
Tail
N412RV
Type
RV12
No current signal · last broadcast 1d ago
Flights observed
117
Distinct callsigns
1
Country
US
Last broadcast
1d ago

Last known position

Most recent position reported by Mode-S A4DD19.

Country allocation

The ICAO 24-bit address A4DD19 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
N412RV - 117 2026-07-20

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-20 N412RV - Jul 20, 15:55 UTCJul 20, 16:50 UTC55m
2026-07-20 N412RV - Jul 20, 04:50 UTCJul 20, 05:50 UTC1h 0m
2026-07-19 N412RV - Jul 19, 23:10 UTCJul 20, 02:00 UTC2h 50m
2026-07-19 N412RV - Jul 19, 18:55 UTCJul 19, 20:35 UTC1h 40m
2026-07-19 N412RV - Jul 19, 15:45 UTCJul 19, 17:20 UTC1h 35m
2026-07-19 N412RV - Jul 19, 00:00 UTCJul 19, 02:50 UTC2h 50m
2026-07-18 N412RV - Jul 18, 18:40 UTCJul 18, 19:15 UTC35m
2026-07-18 N412RV - Jul 18, 05:25 UTCJul 18, 07:30 UTC2h 5m
2026-07-15 N412RV - Jul 15, 23:00 UTCJul 16, 00:00 UTC1h 0m
2026-07-15 N412RV - Jul 15, 19:10 UTCJul 15, 20:35 UTC1h 25m
2026-07-15 N412RV - Jul 15, 16:45 UTCJul 15, 18:15 UTC1h 30m
2026-07-14 N412RV - Jul 14, 03:05 UTCJul 14, 04:10 UTC1h 5m
2026-07-14 N412RV - Jul 14, 00:25 UTCJul 14, 01:20 UTC55m
2026-07-13 N412RV - Jul 13, 18:55 UTCJul 13, 20:00 UTC1h 5m
2026-07-13 N412RV - Jul 13, 17:30 UTCJul 13, 17:45 UTC15m
2026-07-13 N412RV - Jul 13, 13:50 UTCJul 13, 14:40 UTC50m
2026-07-13 N412RV - Jul 13, 03:40 UTCJul 13, 04:45 UTC1h 5m
2026-07-11 N412RV - Jul 11, 17:45 UTCJul 11, 18:30 UTC45m
2026-07-11 N412RV - Jul 11, 00:45 UTCJul 11, 03:20 UTC2h 35m
2026-07-10 N412RV - Jul 10, 18:30 UTCJul 10, 19:40 UTC1h 10m
2026-07-10 N412RV - Jul 10, 13:45 UTCJul 10, 14:40 UTC55m
2026-07-10 N412RV - Jul 10, 02:55 UTCJul 10, 03:40 UTC45m
2026-07-09 N412RV - Jul 9, 23:35 UTCJul 10, 01:10 UTC1h 35m
2026-07-09 N412RV - Jul 9, 19:40 UTCJul 9, 20:05 UTC25m
2026-07-09 N412RV - Jul 9, 18:20 UTCJul 9, 18:40 UTC20m
2026-07-09 N412RV - Jul 9, 00:15 UTCJul 9, 00:50 UTC35m
2026-07-08 N412RV - Jul 8, 22:10 UTCJul 8, 23:30 UTC1h 20m
2026-07-08 N412RV - Jul 8, 15:10 UTCJul 8, 15:30 UTC20m
2026-07-08 N412RV - Jul 8, 14:40 UTCJul 8, 15:05 UTC25m
2026-07-08 N412RV - Jul 8, 01:40 UTCJul 8, 02:20 UTC40m
2026-07-07 N412RV - Jul 7, 23:35 UTCJul 8, 00:50 UTC1h 15m
2026-07-07 N412RV - Jul 7, 17:40 UTCJul 7, 19:05 UTC1h 25m
2026-07-04 N412RV - Jul 4, 04:05 UTCJul 4, 04:15 UTC10m
2026-07-04 N412RV - Jul 4, 03:10 UTCJul 4, 03:55 UTC45m
2026-07-04 N412RV - Jul 4, 00:00 UTCJul 4, 00:45 UTC45m
2026-07-02 N412RV - Jul 2, 23:50 UTCJul 3, 01:05 UTC1h 15m
2026-07-02 N412RV - Jul 2, 18:50 UTCJul 2, 20:00 UTC1h 10m
2026-07-01 N412RV - Jul 1, 23:50 UTCJul 2, 01:05 UTC1h 15m
2026-06-30 N412RV - Jun 30, 23:50 UTCJul 1, 01:15 UTC1h 25m
2026-06-30 N412RV - Jun 30, 19:25 UTCJun 30, 20:25 UTC1h 0m
2026-06-30 N412RV - Jun 30, 00:35 UTCJun 30, 01:30 UTC56m
2026-06-28 N412RV - Jun 28, 20:59 UTCJun 28, 21:55 UTC55m
2026-06-24 N412RV - Jun 24, 19:00 UTCJun 24, 19:24 UTC25m
2026-06-23 N412RV - Jun 23, 23:55 UTCJun 24, 01:39 UTC1h 45m
2026-06-23 N412RV - Jun 23, 18:20 UTCJun 23, 19:10 UTC50m
2026-06-23 N412RV - Jun 23, 02:04 UTCJun 23, 03:15 UTC1h 10m
2026-06-22 N412RV - Jun 22, 04:15 UTCJun 22, 04:34 UTC20m
2026-06-22 N412RV - Jun 22, 01:25 UTCJun 22, 01:35 UTC10m
2026-06-21 N412RV - Jun 21, 19:55 UTCJun 21, 20:14 UTC20m
2026-06-21 N412RV - Jun 21, 18:00 UTCJun 21, 18:39 UTC40m

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 N412RV page for operator, model, and routing details .

Mode-S A4DD19 frequently asked

What is Mode-S code A4DD19?
A4DD19 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N412RV.
Where is Mode-S A4DD19 registered?
Mode-S code A4DD19 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 A4DD19 broadcasting right now?
No active broadcast right now. Last signal was 1d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A4DD19, octal 51156431, decimal 10,804,505.
What flights does A4DD19 operate?
Mode-S A4DD19 has broadcast 1 distinct callsign, including N412RV.