Apparatus

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sensors Mode-S transponder

A7EE2A

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N61UC · BEECH 1900 · operated by ALPINE AVIATION INC

Hex
A7EE2A
Octal
51767052
Decimal
11,005,482
Country
US
Tail
N61UC
Type
B190
No current signal · last broadcast Jul 25, 01:25 UTC
Flights observed
110
Distinct callsigns
14
Country
US
Last broadcast
Jul 25, 01:25 UTC

Last known position

Most recent position reported by Mode-S A7EE2A.

Country allocation

The ICAO 24-bit address A7EE2A 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
AIP1849 Alpine Air Express 34 2026-07-25
AIP1848 Alpine Air Express 33 2026-07-24
AIP1831 - 10 2026-06-20
AIP1832 - 9 2026-06-19
AIP624 - 4 2026-07-09
AIP623 - 4 2026-07-10
AIP637 - 3 2026-06-29
AIP8950 - 2 2026-07-16
AIP530 Alpine Air Express 2 2026-05-18
AIP1892 Alpine Air Express 2 2026-07-02
AIP1891 - 2 2026-07-02
AIP1840 Alpine Air Express 2 2026-05-21
AIP1839 Alpine Air Express 2 2026-05-22
AIP9936 - 1 2026-07-03

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-25 AIP1849 SGU → SLC Jul 25, 01:00 UTCJul 25, 01:25 UTC25m
2026-07-24 AIP1848 SLC → CDC Jul 24, 13:15 UTCJul 24, 13:35 UTC20m
2026-07-24 AIP1849 SGU → SLC Jul 24, 01:15 UTCJul 24, 01:30 UTC15m
2026-07-23 AIP1848 - Jul 23, 13:25 UTCJul 23, 13:45 UTC20m
2026-07-23 AIP1849 SGU → SLC Jul 23, 01:10 UTCJul 23, 01:30 UTC20m
2026-07-23 AIP1849 SGU → SLC Jul 23, 00:25 UTCJul 23, 00:35 UTC10m
2026-07-22 AIP1848 - Jul 22, 13:25 UTCJul 22, 13:50 UTC25m
2026-07-22 AIP1849 SGU → SLC Jul 22, 01:10 UTCJul 22, 01:30 UTC20m
2026-07-21 AIP1848 - Jul 21, 14:10 UTCJul 21, 14:30 UTC20m
2026-07-16 AIP8950 - Jul 16, 13:45 UTCJul 16, 14:29 UTC45m
2026-07-16 AIP8950 - Jul 16, 11:15 UTCJul 16, 11:50 UTC35m
2026-07-10 AIP623 - Jul 10, 00:25 UTCJul 10, 01:00 UTC35m
2026-07-09 AIP624 - Jul 9, 13:35 UTCJul 9, 14:15 UTC40m
2026-07-03 AIP9936 SLC → SLC Jul 3, 20:10 UTCJul 3, 20:55 UTC45m
2026-07-02 AIP1891 - Jul 2, 23:50 UTCJul 3, 00:15 UTC25m
2026-07-02 AIP1892 SLC → EKO Jul 2, 13:30 UTCJul 2, 14:00 UTC30m
2026-06-29 AIP637 - Jun 29, 18:49 UTCJun 29, 19:35 UTC45m
2026-06-29 AIP637 - Jun 29, 15:24 UTCJun 29, 16:10 UTC45m
2026-06-29 AIP637 - Jun 29, 12:49 UTCJun 29, 14:29 UTC1h 40m
2026-06-27 AIP1849 - Jun 27, 00:44 UTCJun 27, 01:35 UTC50m
2026-06-26 AIP1848 - Jun 26, 16:49 UTCJun 26, 17:15 UTC25m
2026-06-25 AIP1849 - Jun 25, 01:24 UTCJun 25, 01:59 UTC35m
2026-06-24 AIP1848 - Jun 24, 13:44 UTCJun 24, 14:09 UTC25m
2026-06-24 AIP1849 - Jun 24, 01:14 UTCJun 24, 01:34 UTC20m
2026-06-24 AIP1849 - Jun 24, 00:30 UTCJun 24, 00:40 UTC10m
2026-06-23 AIP1848 - Jun 23, 13:29 UTCJun 23, 13:50 UTC20m
2026-06-20 AIP1831 - Jun 20, 00:44 UTCJun 20, 01:19 UTC35m
2026-06-19 AIP1832 - Jun 19, 13:09 UTCJun 19, 13:29 UTC20m
2026-06-19 AIP1831 - Jun 19, 00:55 UTCJun 19, 01:29 UTC35m
2026-06-18 AIP1832 - Jun 18, 13:30 UTCJun 18, 13:45 UTC15m
2026-06-18 AIP1891 - Jun 18, 00:05 UTCJun 18, 00:35 UTC30m
2026-06-17 AIP1892 SLC → EKO Jun 17, 13:40 UTCJun 17, 14:15 UTC35m
2026-06-12 AIP1849 SGU → SLC Jun 12, 01:20 UTCJun 12, 01:35 UTC15m
2026-06-11 AIP1848 SLC → CDC Jun 11, 13:35 UTCJun 11, 14:00 UTC25m
2026-06-11 AIP1849 SGU → SLC Jun 11, 01:15 UTCJun 11, 01:35 UTC20m
2026-06-10 AIP1848 SLC → CDC Jun 10, 13:50 UTCJun 10, 14:15 UTC25m
2026-06-10 AIP1849 SGU → SLC Jun 10, 01:15 UTCJun 10, 01:35 UTC20m
2026-06-09 AIP1848 SLC → CDC Jun 9, 13:40 UTCJun 9, 14:05 UTC25m
2026-06-09 AIP1849 SGU → SLC Jun 9, 01:10 UTCJun 9, 01:35 UTC25m
2026-06-08 AIP1848 SLC → CDC Jun 8, 13:25 UTCJun 8, 13:50 UTC25m
2026-06-06 AIP1849 SGU → SLC Jun 6, 01:25 UTCJun 6, 01:40 UTC15m
2026-06-05 AIP1848 SLC → CDC Jun 5, 13:50 UTCJun 5, 14:10 UTC20m
2026-06-05 AIP1849 SGU → SLC Jun 5, 01:20 UTCJun 5, 01:40 UTC20m
2026-06-04 AIP1848 SLC → CDC Jun 4, 13:55 UTCJun 4, 14:15 UTC20m
2026-06-04 AIP1849 SGU → SLC Jun 4, 01:30 UTCJun 4, 01:50 UTC20m
2026-06-03 AIP1848 SLC → CDC Jun 3, 13:30 UTCJun 3, 13:55 UTC25m
2026-06-03 AIP1849 SGU → SLC Jun 3, 01:30 UTCJun 3, 01:50 UTC20m
2026-06-02 AIP1848 SLC → CDC Jun 2, 14:00 UTCJun 2, 14:25 UTC25m
2026-06-02 AIP1849 SGU → SLC Jun 2, 01:15 UTCJun 2, 01:30 UTC15m
2026-06-01 AIP1848 SLC → CDC Jun 1, 13:05 UTCJun 1, 13:25 UTC20m

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 N61UC page for operator, model, and routing details .

Mode-S A7EE2A frequently asked

What is Mode-S code A7EE2A?
A7EE2A is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N61UC.
Where is Mode-S A7EE2A registered?
Mode-S code A7EE2A 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 A7EE2A broadcasting right now?
No active broadcast right now. Last signal was Jul 25, 01:25 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A7EE2A, octal 51767052, decimal 11,005,482.
What flights does A7EE2A operate?
Mode-S A7EE2A has broadcast 14 distinct callsigns, including AIP1849, AIP1848, AIP1831, AIP1832, AIP624.