Apparatus

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sensors Mode-S transponder

A50323

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N422AX · BEECH 1900 · operated by ALPINE AVIATION INC

Hex
A50323
Octal
51201443
Decimal
10,814,243
Country
US
Tail
N422AX
Type
B190
No current signal · last broadcast 6h ago
Flights observed
52
Distinct callsigns
11
Country
US
Last broadcast
6h ago

Last known position

Most recent position reported by Mode-S A50323.

Country allocation

The ICAO 24-bit address A50323 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 11 distinct

Callsign Airline Flights Last seen
AIP1848 Alpine Air Express 14 2026-05-21
AIP1849 Alpine Air Express 13 2026-05-22
AIP624 Alpine Air Express 5 2026-05-29
AIP623 Alpine Air Express 4 2026-05-30
AIP527 Alpine Air Express 4 2026-05-14
AIP516 Alpine Air Express 2 2026-05-08
AIP303 Alpine Air Express 2 2026-05-12
AIP302 Alpine Air Express 2 2026-05-13
AIP1892 Alpine Air Express 2 2026-04-29
AIP1891 Alpine Air Express 2 2026-04-29
AIP1813 Alpine Air Express 2 2026-05-12

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-30 AIP623 IDA → SLC May 30, 00:45 UTCMay 30, 01:30 UTC45m
2026-05-29 AIP624 SLC → IDA May 29, 13:15 UTCMay 29, 13:45 UTC30m
2026-05-28 AIP623 IDA → SLC May 28, 00:55 UTCMay 28, 01:35 UTC40m
2026-05-27 AIP624 SLC → IDA May 27, 13:15 UTCMay 27, 13:50 UTC35m
2026-05-26 AIP624 SLC → IDA May 26, 13:54 UTCMay 26, 14:14 UTC20m
2026-05-23 AIP623 IDA → SLC May 23, 00:40 UTCMay 23, 01:30 UTC50m
2026-05-22 AIP624 SLC → IDA May 22, 13:05 UTCMay 22, 13:45 UTC40m
2026-05-22 AIP1849 SGU → SLC May 22, 01:05 UTCMay 22, 01:20 UTC15m
2026-05-21 AIP1848 SLC → CDC May 21, 13:10 UTCMay 21, 13:45 UTC35m
2026-05-21 AIP1849 SGU → SLC May 21, 00:55 UTCMay 21, 01:15 UTC20m
2026-05-20 AIP1848 SLC → CDC May 20, 13:25 UTCMay 20, 13:45 UTC20m
2026-05-20 AIP1849 SGU → SLC May 20, 01:05 UTCMay 20, 01:25 UTC20m
2026-05-19 AIP1848 SLC → CDC May 19, 13:30 UTCMay 19, 13:55 UTC25m
2026-05-19 AIP1849 SGU → SLC May 19, 01:30 UTCMay 19, 01:45 UTC15m
2026-05-18 AIP1848 SLC → CDC May 18, 13:30 UTCMay 18, 14:05 UTC35m
2026-05-16 AIP623 IDA → SLC May 16, 00:25 UTCMay 16, 01:05 UTC40m
2026-05-15 AIP624 SLC → IDA May 15, 13:00 UTCMay 15, 13:45 UTC45m
2026-05-14 AIP527 GSP → LRD May 14, 17:45 UTCMay 14, 19:40 UTC1h 55m
2026-05-14 AIP527 GSP → LRD May 14, 15:55 UTCMay 14, 16:20 UTC25m
2026-05-14 AIP527 GSP → LRD May 14, 14:30 UTCMay 14, 15:10 UTC40m
2026-05-14 AIP527 GSP → LRD May 14, 13:01 UTCMay 14, 13:30 UTC30m
2026-05-13 AIP302 BIL → SLC May 13, 10:10 UTCMay 13, 10:40 UTC30m
2026-05-13 AIP302 BIL → SLC May 13, 09:00 UTCMay 13, 09:10 UTC10m
2026-05-12 AIP303 SLC → BIL May 12, 14:25 UTCMay 12, 14:35 UTC10m
2026-05-12 AIP303 SLC → BIL May 12, 13:10 UTCMay 12, 13:35 UTC25m
2026-05-12 AIP1813 GUC → DEN May 12, 05:05 UTCMay 12, 05:35 UTC30m
2026-05-12 AIP1813 GUC → DEN May 12, 03:30 UTCMay 12, 04:10 UTC40m
2026-05-08 AIP516 BTL → LRD May 8, 15:50 UTCMay 8, 16:20 UTC30m
2026-05-08 AIP516 BTL → LRD May 8, 13:00 UTCMay 8, 13:45 UTC45m
2026-05-05 AIP1849 SGU → SLC May 5, 01:05 UTCMay 5, 01:35 UTC30m
2026-05-04 AIP1848 SLC → CDC May 4, 13:15 UTCMay 4, 13:35 UTC20m
2026-05-02 AIP1849 SGU → SLC May 2, 01:10 UTCMay 2, 01:25 UTC15m
2026-05-01 AIP1848 SLC → CDC May 1, 13:35 UTCMay 1, 13:55 UTC20m
2026-05-01 AIP1849 SGU → SLC May 1, 01:15 UTCMay 1, 01:30 UTC15m
2026-04-30 AIP1848 SLC → CDC Apr 30, 13:45 UTCApr 30, 14:25 UTC40m
2026-04-29 AIP1891 EKO → SLC Apr 29, 23:55 UTCApr 30, 00:25 UTC30m
2026-04-29 AIP1892 SLC → EKO Apr 29, 13:45 UTCApr 29, 14:20 UTC35m
2026-04-28 AIP1891 EKO → SLC Apr 28, 23:50 UTCApr 29, 00:25 UTC35m
2026-04-28 AIP1892 SLC → EKO Apr 28, 14:45 UTCApr 28, 15:15 UTC30m
2026-04-28 AIP1849 SGU → SLC Apr 28, 01:20 UTCApr 28, 01:45 UTC25m
2026-04-27 AIP1848 SLC → CDC Apr 27, 13:25 UTCApr 27, 13:45 UTC20m
2026-04-21 AIP1849 SGU → SLC Apr 21, 01:20 UTCApr 21, 02:20 UTC1h 0m
2026-04-20 AIP1848 SLC → CDC Apr 20, 13:40 UTCApr 20, 14:05 UTC25m
2026-04-18 AIP1849 SGU → SLC Apr 18, 01:25 UTCApr 18, 01:40 UTC15m
2026-04-17 AIP1848 SLC → CDC Apr 17, 13:35 UTCApr 17, 14:15 UTC40m
2026-04-17 AIP1849 SGU → SLC Apr 17, 01:20 UTCApr 17, 01:30 UTC10m
2026-04-16 AIP1848 SLC → CDC Apr 16, 13:30 UTCApr 16, 14:00 UTC30m
2026-04-16 AIP1849 SGU → SLC Apr 16, 01:10 UTCApr 16, 01:25 UTC15m
2026-04-15 AIP1848 SLC → CDC Apr 15, 13:25 UTCApr 15, 13:40 UTC15m
2026-04-15 AIP1849 SGU → SLC Apr 15, 01:15 UTCApr 15, 01:30 UTC15m

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 N422AX page for operator, model, and routing details .

Mode-S A50323 frequently asked

What is Mode-S code A50323?
A50323 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N422AX.
Where is Mode-S A50323 registered?
Mode-S code A50323 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 A50323 broadcasting right now?
No active broadcast right now. Last signal was 6h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A50323, octal 51201443, decimal 10,814,243.
What flights does A50323 operate?
Mode-S A50323 has broadcast 11 distinct callsigns, including AIP1848, AIP1849, AIP624, AIP623, AIP527.