Apparatus

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sensors Mode-S transponder

A864A7

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N64UC · BEECH 1900 · operated by ALPINE AVIATION INC

Hex
A864A7
Octal
52062247
Decimal
11,035,815
Country
US
Tail
N64UC
Type
B190
No current signal · last broadcast 16h ago
Flights observed
46
Distinct callsigns
8
Country
US
Last broadcast
16h ago

Last known position

Most recent position reported by Mode-S A864A7.

Country allocation

The ICAO 24-bit address A864A7 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 8 distinct

Callsign Airline Flights Last seen
AIP1855 Alpine Air Express 16 2026-06-13
AIP1856 - 14 2026-06-13
AIP1842 Alpine Air Express 6 2026-06-12
AIP1841 Alpine Air Express 6 2026-06-13
IP1856 - 1 2026-05-16
AIP1876 Alpine Air Express 1 2026-05-18
AIP1875 Alpine Air Express 1 2026-05-19
AIP1801 Alpine Air Express 1 2026-04-22

Recent flights last 46

DateFlightRouteTakeoffLandingDuration
2026-06-13 AIP1855 HDN → DEN Jun 13, 15:00 UTCJun 13, 15:30 UTC30m
2026-06-13 AIP1856 - Jun 13, 13:10 UTCJun 13, 13:35 UTC25m
2026-06-13 AIP1841 ALS → DEN Jun 13, 01:15 UTCJun 13, 01:55 UTC40m
2026-06-12 AIP1842 DEN → SLT Jun 12, 14:01 UTCJun 12, 15:05 UTC1h 5m
2026-06-12 AIP1841 ALS → DEN Jun 12, 01:00 UTCJun 12, 01:40 UTC40m
2026-06-11 AIP1842 DEN → SLT Jun 11, 13:35 UTCJun 11, 14:30 UTC55m
2026-06-11 AIP1855 HDN → DEN Jun 11, 01:45 UTCJun 11, 02:25 UTC40m
2026-06-10 AIP1856 DEN → HDN Jun 10, 13:30 UTCJun 10, 14:00 UTC30m
2026-06-09 AIP1855 HDN → DEN Jun 9, 03:15 UTCJun 9, 03:45 UTC30m
2026-06-08 AIP1856 DEN → HDN Jun 8, 23:00 UTCJun 8, 23:30 UTC30m
2026-06-06 AIP1855 HDN → DEN Jun 6, 14:54 UTCJun 6, 15:30 UTC35m
2026-06-06 AIP1856 DEN → HDN Jun 6, 13:15 UTCJun 6, 13:39 UTC25m
2026-05-27 AIP1855 HDN → DEN May 27, 01:49 UTCMay 27, 02:19 UTC30m
2026-05-26 AIP1856 DEN → HDN May 26, 23:14 UTCMay 26, 23:49 UTC35m
2026-05-23 AIP1855 HDN → DEN May 23, 15:00 UTCMay 23, 15:35 UTC35m
2026-05-23 AIP1856 DEN → HDN May 23, 13:00 UTCMay 23, 13:20 UTC20m
2026-05-21 AIP1841 ALS → DEN May 21, 01:45 UTCMay 21, 02:20 UTC35m
2026-05-20 AIP1842 DEN → SLT May 20, 13:00 UTCMay 20, 13:35 UTC35m
2026-05-20 AIP1855 HDN → DEN May 20, 01:35 UTCMay 20, 02:05 UTC30m
2026-05-19 AIP1856 DEN → HDN May 19, 14:15 UTCMay 19, 14:40 UTC25m
2026-05-19 AIP1875 DEN → GJT May 19, 01:10 UTCMay 19, 02:00 UTC50m
2026-05-18 AIP1876 DEN → GJT May 18, 23:30 UTCMay 18, 23:50 UTC20m
2026-05-16 AIP1855 HDN → DEN May 16, 15:45 UTCMay 16, 16:20 UTC35m
2026-05-16 IP1856 - May 16, 13:05 UTCMay 16, 13:25 UTC20m
2026-05-16 AIP1855 HDN → DEN May 16, 01:40 UTCMay 16, 02:10 UTC30m
2026-05-15 AIP1856 DEN → HDN May 15, 13:25 UTCMay 15, 13:50 UTC25m
2026-05-13 AIP1841 ALS → DEN May 13, 01:10 UTCMay 13, 01:50 UTC40m
2026-05-12 AIP1842 DEN → SLT May 12, 13:20 UTCMay 12, 14:20 UTC1h 0m
2026-05-09 AIP1855 HDN → DEN May 9, 14:45 UTCMay 9, 15:20 UTC35m
2026-05-09 AIP1856 DEN → HDN May 9, 13:05 UTCMay 9, 13:25 UTC20m
2026-05-02 AIP1841 ALS → DEN May 2, 01:05 UTCMay 2, 01:45 UTC40m
2026-05-01 AIP1842 DEN → SLT May 1, 13:10 UTCMay 1, 13:45 UTC35m
2026-05-01 AIP1841 ALS → DEN May 1, 01:55 UTCMay 1, 02:40 UTC45m
2026-04-30 AIP1842 DEN → SLT Apr 30, 13:40 UTCApr 30, 14:20 UTC40m
2026-04-30 AIP1855 HDN → DEN Apr 30, 01:35 UTCApr 30, 02:10 UTC35m
2026-04-29 AIP1856 DEN → HDN Apr 29, 13:25 UTCApr 29, 13:50 UTC25m
2026-04-28 AIP1855 HDN → DEN Apr 28, 01:55 UTCApr 28, 02:35 UTC40m
2026-04-27 AIP1856 DEN → HDN Apr 27, 23:10 UTCApr 27, 23:45 UTC35m
2026-04-25 AIP1855 HDN → DEN Apr 25, 15:40 UTCApr 25, 16:20 UTC40m
2026-04-25 AIP1856 DEN → HDN Apr 25, 13:10 UTCApr 25, 13:45 UTC35m
2026-04-25 AIP1855 HDN → DEN Apr 25, 01:30 UTCApr 25, 02:05 UTC35m
2026-04-24 AIP1856 DEN → HDN Apr 24, 13:55 UTCApr 24, 14:20 UTC25m
2026-04-24 AIP1855 HDN → DEN Apr 24, 01:30 UTCApr 24, 02:10 UTC40m
2026-04-23 AIP1856 DEN → HDN Apr 23, 13:25 UTCApr 23, 14:00 UTC35m
2026-04-23 AIP1855 HDN → DEN Apr 23, 01:35 UTCApr 23, 02:10 UTC35m
2026-04-22 AIP1801 WMC → ELY Apr 22, 17:10 UTCApr 22, 17:25 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 N64UC page for operator, model, and routing details .

Mode-S A864A7 frequently asked

What is Mode-S code A864A7?
A864A7 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N64UC.
Where is Mode-S A864A7 registered?
Mode-S code A864A7 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 A864A7 broadcasting right now?
No active broadcast right now. Last signal was 16h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A864A7, octal 52062247, decimal 11,035,815.
What flights does A864A7 operate?
Mode-S A864A7 has broadcast 8 distinct callsigns, including AIP1855, AIP1856, AIP1842, AIP1841, IP1856.