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 Jul 24, 01:10 UTC
Flights observed
127
Distinct callsigns
14
Country
US
Last broadcast
Jul 24, 01:10 UTC

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 14 distinct

Callsign Airline Flights Last seen
AIP624 - 32 2026-07-14
AIP623 - 30 2026-07-15
AIP1849 - 19 2026-07-18
AIP1848 - 19 2026-07-17
AIP1832 Alpine Air Express 5 2026-07-23
AIP1831 Alpine Air Express 5 2026-07-24
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
AIP9921 - 1 2026-07-03

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-24 AIP1831 RKS → SLC Jul 24, 00:45 UTCJul 24, 01:10 UTC25m
2026-07-23 AIP1832 SLC → RKS Jul 23, 13:35 UTCJul 23, 13:50 UTC15m
2026-07-23 AIP1831 RKS → SLC Jul 23, 01:00 UTCJul 23, 01:20 UTC20m
2026-07-22 AIP1832 SLC → RKS Jul 22, 13:30 UTCJul 22, 13:45 UTC15m
2026-07-22 AIP1831 RKS → SLC Jul 22, 00:50 UTCJul 22, 01:20 UTC30m
2026-07-21 AIP1832 SLC → RKS Jul 21, 13:45 UTCJul 21, 14:10 UTC25m
2026-07-21 AIP1831 - Jul 21, 00:50 UTCJul 21, 01:25 UTC35m
2026-07-20 AIP1832 SLC → RKS Jul 20, 13:00 UTCJul 20, 13:20 UTC20m
2026-07-18 AIP1849 - Jul 18, 01:39 UTCJul 18, 02:05 UTC25m
2026-07-17 AIP1848 - Jul 17, 14:00 UTCJul 17, 14:24 UTC25m
2026-07-17 AIP1849 - Jul 17, 00:55 UTCJul 17, 01:15 UTC20m
2026-07-16 AIP1848 - Jul 16, 13:20 UTCJul 16, 13:45 UTC25m
2026-07-16 AIP1849 - Jul 16, 01:25 UTCJul 16, 01:40 UTC15m
2026-07-16 AIP1849 - Jul 16, 00:45 UTCJul 16, 00:55 UTC10m
2026-07-15 AIP1848 - Jul 15, 13:35 UTCJul 15, 14:05 UTC30m
2026-07-15 AIP623 - Jul 15, 00:25 UTCJul 15, 01:15 UTC50m
2026-07-14 AIP624 - Jul 14, 13:30 UTCJul 14, 14:05 UTC35m
2026-07-14 AIP1849 - Jul 14, 01:25 UTCJul 14, 01:45 UTC20m
2026-07-13 AIP1848 - Jul 13, 13:30 UTCJul 13, 13:50 UTC20m
2026-07-11 AIP623 - Jul 11, 00:20 UTCJul 11, 01:00 UTC40m
2026-07-10 AIP624 - Jul 10, 13:05 UTCJul 10, 13:40 UTC35m
2026-07-10 AIP1849 - Jul 10, 01:25 UTCJul 10, 01:50 UTC25m
2026-07-09 AIP1848 - Jul 9, 13:40 UTCJul 9, 14:05 UTC25m
2026-07-09 AIP623 - Jul 9, 00:50 UTCJul 9, 01:30 UTC40m
2026-07-08 AIP624 - Jul 8, 13:10 UTCJul 8, 13:50 UTC40m
2026-07-08 AIP623 - Jul 8, 00:35 UTCJul 8, 01:20 UTC45m
2026-07-07 AIP624 - Jul 7, 13:05 UTCJul 7, 13:40 UTC35m
2026-07-07 AIP623 - Jul 7, 00:50 UTCJul 7, 01:55 UTC1h 5m
2026-07-06 AIP624 - Jul 6, 13:10 UTCJul 6, 13:45 UTC35m
2026-07-03 AIP9921 - Jul 3, 17:30 UTCJul 3, 18:05 UTC35m
2026-07-02 AIP624 - Jul 2, 13:30 UTCJul 2, 14:10 UTC40m
2026-07-02 AIP623 - Jul 2, 00:40 UTCJul 2, 01:15 UTC35m
2026-07-01 AIP624 - Jul 1, 13:10 UTCJul 1, 13:55 UTC45m
2026-07-01 AIP623 - Jul 1, 00:50 UTCJul 1, 01:30 UTC40m
2026-06-30 AIP624 - Jun 30, 13:40 UTCJun 30, 14:15 UTC35m
2026-06-30 AIP623 - Jun 30, 00:45 UTCJun 30, 01:25 UTC40m
2026-06-29 AIP624 - Jun 29, 13:39 UTCJun 29, 14:09 UTC30m
2026-06-27 AIP623 - Jun 27, 00:20 UTCJun 27, 01:19 UTC1h 0m
2026-06-26 AIP624 - Jun 26, 15:45 UTCJun 26, 16:20 UTC35m
2026-06-26 AIP623 - Jun 26, 00:35 UTCJun 26, 01:15 UTC40m
2026-06-25 AIP624 - Jun 25, 13:24 UTCJun 25, 13:59 UTC35m
2026-06-25 AIP623 - Jun 25, 00:29 UTCJun 25, 01:04 UTC35m
2026-06-24 AIP624 - Jun 24, 13:44 UTCJun 24, 14:20 UTC35m
2026-06-24 AIP623 - Jun 24, 00:40 UTCJun 24, 01:30 UTC50m
2026-06-23 AIP624 - Jun 23, 13:19 UTCJun 23, 13:55 UTC35m
2026-06-23 AIP623 - Jun 23, 00:24 UTCJun 23, 01:10 UTC45m
2026-06-22 AIP624 - Jun 22, 12:59 UTCJun 22, 13:39 UTC40m
2026-06-20 AIP623 - Jun 20, 00:29 UTCJun 20, 01:09 UTC40m
2026-06-19 AIP624 - Jun 19, 13:24 UTCJun 19, 13:59 UTC35m
2026-06-19 AIP623 - Jun 19, 00:34 UTCJun 19, 01:15 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 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 Jul 24, 01:10 UTC.
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 14 distinct callsigns, including AIP624, AIP623, AIP1849, AIP1848, AIP1832.