Apparatus

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sensors Mode-S transponder

A1DCDA

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N219VP · BEECH 1900 · operated by ALPINE AVIATION INC

Hex
A1DCDA
Octal
50356332
Decimal
10,607,834
Country
US
Tail
N219VP
Type
B190
No current signal · last broadcast 7h ago
Flights observed
109
Distinct callsigns
7
Country
US
Last broadcast
7h ago

Last known position

Most recent position reported by Mode-S A1DCDA.

Country allocation

The ICAO 24-bit address A1DCDA 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 7 distinct

Callsign Airline Flights Last seen
AIP1842 - 23 2026-07-17
AIP1856 - 22 2026-07-03
AIP1841 - 21 2026-07-18
AIP1855 - 18 2026-07-04
AIP1876 - 13 2026-07-13
AIP1875 - 11 2026-07-14
AIP9921 Alpine Air Express 1 2026-05-28

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-18 AIP1841 - Jul 18, 01:05 UTCJul 18, 01:50 UTC45m
2026-07-17 AIP1842 - Jul 17, 13:00 UTCJul 17, 13:45 UTC45m
2026-07-17 AIP1841 - Jul 17, 01:05 UTCJul 17, 01:59 UTC55m
2026-07-16 AIP1842 - Jul 16, 13:05 UTCJul 16, 13:54 UTC50m
2026-07-16 AIP1841 - Jul 16, 01:00 UTCJul 16, 01:55 UTC55m
2026-07-15 AIP1842 - Jul 15, 13:05 UTCJul 15, 13:55 UTC50m
2026-07-15 AIP1841 - Jul 15, 01:10 UTCJul 15, 01:55 UTC45m
2026-07-14 AIP1842 - Jul 14, 13:20 UTCJul 14, 14:10 UTC50m
2026-07-14 AIP1875 - Jul 14, 01:15 UTCJul 14, 02:00 UTC45m
2026-07-13 AIP1876 - Jul 13, 23:35 UTCJul 13, 23:55 UTC20m
2026-07-11 AIP1875 - Jul 11, 16:45 UTCJul 11, 17:25 UTC40m
2026-07-11 AIP1876 - Jul 11, 14:30 UTCJul 11, 14:55 UTC25m
2026-07-11 AIP1841 - Jul 11, 02:00 UTCJul 11, 02:40 UTC40m
2026-07-10 AIP1842 - Jul 10, 13:10 UTCJul 10, 14:05 UTC55m
2026-07-10 AIP1841 - Jul 10, 00:55 UTCJul 10, 01:35 UTC40m
2026-07-09 AIP1842 - Jul 9, 13:20 UTCJul 9, 14:10 UTC50m
2026-07-09 AIP1841 - Jul 9, 02:30 UTCJul 9, 03:10 UTC40m
2026-07-08 AIP1842 - Jul 8, 13:05 UTCJul 8, 14:10 UTC1h 5m
2026-07-08 AIP1841 - Jul 8, 01:05 UTCJul 8, 01:50 UTC45m
2026-07-07 AIP1842 - Jul 7, 13:20 UTCJul 7, 14:10 UTC50m
2026-07-07 AIP1876 - Jul 7, 01:25 UTCJul 7, 02:20 UTC55m
2026-07-07 AIP1876 - Jul 7, 00:00 UTCJul 7, 00:20 UTC20m
2026-07-04 AIP1855 - Jul 4, 01:50 UTCJul 4, 02:15 UTC25m
2026-07-03 AIP1856 - Jul 3, 12:50 UTCJul 3, 13:15 UTC25m
2026-07-03 AIP1841 - Jul 3, 02:00 UTCJul 3, 02:35 UTC35m
2026-07-02 AIP1842 - Jul 2, 13:00 UTCJul 2, 13:55 UTC55m
2026-07-02 AIP1841 - Jul 2, 01:00 UTCJul 2, 01:35 UTC35m
2026-07-01 AIP1842 - Jul 1, 13:35 UTCJul 1, 14:35 UTC1h 0m
2026-07-01 AIP1841 - Jul 1, 01:15 UTCJul 1, 01:55 UTC40m
2026-06-30 AIP1842 - Jun 30, 14:45 UTCJun 30, 14:55 UTC10m
2026-06-30 AIP1842 - Jun 30, 13:50 UTCJun 30, 14:15 UTC25m
2026-06-30 AIP1875 - Jun 30, 00:55 UTCJun 30, 01:50 UTC55m
2026-06-29 AIP1876 - Jun 29, 23:09 UTCJun 29, 23:34 UTC25m
2026-06-27 AIP1875 - Jun 27, 18:29 UTCJun 27, 19:05 UTC35m
2026-06-27 AIP1876 - Jun 27, 15:05 UTCJun 27, 15:24 UTC20m
2026-06-27 AIP1855 - Jun 27, 01:35 UTCJun 27, 01:54 UTC20m
2026-06-26 AIP1856 - Jun 26, 19:45 UTCJun 26, 20:04 UTC20m
2026-06-26 AIP1856 - Jun 26, 14:59 UTCJun 26, 15:15 UTC15m
2026-06-26 AIP1856 - Jun 26, 12:55 UTCJun 26, 13:15 UTC20m
2026-06-26 AIP1841 - Jun 26, 01:05 UTCJun 26, 01:39 UTC35m
2026-06-25 AIP1842 DEN → SLT Jun 25, 13:20 UTCJun 25, 14:24 UTC1h 5m
2026-06-25 AIP1841 - Jun 25, 01:14 UTCJun 25, 01:54 UTC40m
2026-06-24 AIP1842 DEN → SLT Jun 24, 14:00 UTCJun 24, 14:34 UTC35m
2026-06-24 AIP1841 - Jun 24, 01:04 UTCJun 24, 01:44 UTC40m
2026-06-23 AIP1842 DEN → SLT Jun 23, 13:29 UTCJun 23, 14:35 UTC1h 5m
2026-06-23 AIP1875 - Jun 23, 01:04 UTCJun 23, 02:04 UTC1h 0m
2026-06-22 AIP1876 - Jun 22, 22:59 UTCJun 22, 23:20 UTC20m
2026-06-20 AIP1875 DEN → GJT Jun 20, 16:05 UTCJun 20, 17:34 UTC1h 30m
2026-06-20 AIP1876 DEN → GJT Jun 20, 14:35 UTCJun 20, 14:54 UTC20m
2026-06-20 AIP1855 - Jun 20, 01:29 UTCJun 20, 01:55 UTC25m

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 N219VP page for operator, model, and routing details .

Mode-S A1DCDA frequently asked

What is Mode-S code A1DCDA?
A1DCDA is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N219VP.
Where is Mode-S A1DCDA registered?
Mode-S code A1DCDA 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 A1DCDA broadcasting right now?
No active broadcast right now. Last signal was 7h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A1DCDA, octal 50356332, decimal 10,607,834.
What flights does A1DCDA operate?
Mode-S A1DCDA has broadcast 7 distinct callsigns, including AIP1842, AIP1856, AIP1841, AIP1855, AIP1876.