Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

A168C4

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N190GC · DE HAVILLAND DHC-6 Twin Otter · operated by MONARCH ENTERPRISES INC

Hex
A168C4
Octal
50264304
Decimal
10,578,116
Country
US
Tail
N190GC
Type
DHC6
No current signal · last broadcast 8h ago
Flights observed
35
Distinct callsigns
1
Country
US
Last broadcast
8h ago

Last known position

Most recent position reported by Mode-S A168C4.

Country allocation

The ICAO 24-bit address A168C4 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 1 distinct

Callsign Airline Flights Last seen
CVU90 Grand Canyon Airlines 35 2026-06-02

Recent flights last 35

DateFlightRouteTakeoffLandingDuration
2026-06-02 CVU90 GMV → BLD Jun 2, 13:10 UTCJun 2, 13:30 UTC20m
2026-06-01 CVU90 GMV → BLD Jun 1, 15:10 UTCJun 1, 15:30 UTC20m
2026-05-28 CVU90 GMV → BLD May 28, 20:10 UTCMay 28, 20:40 UTC30m
2026-05-28 CVU90 GMV → BLD May 28, 18:55 UTCMay 28, 19:25 UTC30m
2026-05-28 CVU90 GMV → BLD May 28, 01:10 UTCMay 28, 01:30 UTC20m
2026-05-27 CVU90 GMV → BLD May 27, 20:35 UTCMay 27, 21:00 UTC25m
2026-05-27 CVU90 GMV → BLD May 27, 19:15 UTCMay 27, 19:55 UTC40m
2026-05-27 CVU90 GMV → BLD May 27, 13:40 UTCMay 27, 14:10 UTC30m
2026-05-27 CVU90 GMV → BLD May 27, 01:44 UTCMay 27, 02:09 UTC25m
2026-05-26 CVU90 GMV → BLD May 26, 22:44 UTCMay 26, 22:59 UTC15m
2026-05-26 CVU90 GMV → BLD May 26, 18:24 UTCMay 26, 18:55 UTC30m
2026-05-26 CVU90 GMV → BLD May 26, 13:50 UTCMay 26, 14:20 UTC30m
2026-05-25 CVU90 GMV → BLD May 25, 19:30 UTCMay 25, 19:59 UTC30m
2026-05-25 CVU90 GMV → BLD May 25, 18:20 UTCMay 25, 18:45 UTC25m
2026-05-25 CVU90 GMV → BLD May 25, 17:05 UTCMay 25, 17:30 UTC25m
2026-05-25 CVU90 GMV → BLD May 25, 14:55 UTCMay 25, 15:30 UTC35m
2026-05-24 CVU90 GMV → BLD May 24, 23:00 UTCMay 24, 23:46 UTC46m
2026-05-24 CVU90 GMV → BLD May 24, 16:20 UTCMay 24, 16:45 UTC25m
2026-05-21 CVU90 GMV → BLD May 21, 23:05 UTCMay 21, 23:40 UTC35m
2026-05-19 CVU90 GMV → BLD May 19, 22:55 UTCMay 19, 23:25 UTC30m
2026-05-19 CVU90 GMV → BLD May 19, 17:10 UTCMay 19, 17:35 UTC25m
2026-05-19 CVU90 GMV → BLD May 19, 13:35 UTCMay 19, 14:05 UTC30m
2026-05-18 CVU90 GMV → BLD May 18, 19:55 UTCMay 18, 20:30 UTC35m
2026-05-17 CVU90 GMV → BLD May 17, 17:10 UTCMay 17, 17:35 UTC25m
2026-05-17 CVU90 GMV → BLD May 17, 16:10 UTCMay 17, 16:35 UTC25m
2026-05-16 CVU90 GMV → BLD May 16, 19:20 UTCMay 16, 20:40 UTC1h 20m
2026-04-17 CVU90 GMV → BLD Apr 17, 18:40 UTCApr 17, 19:15 UTC35m
2026-04-17 CVU90 GMV → BLD Apr 17, 17:25 UTCApr 17, 17:50 UTC25m
2026-04-15 CVU90 GMV → BLD Apr 15, 15:05 UTCApr 15, 15:30 UTC25m
2026-04-14 CVU90 GMV → BLD Apr 14, 21:40 UTCApr 14, 22:00 UTC20m
2026-04-14 CVU90 GMV → BLD Apr 14, 16:50 UTCApr 14, 17:05 UTC15m
2026-04-14 CVU90 GMV → BLD Apr 14, 16:35 UTCApr 14, 16:45 UTC10m
2026-04-13 CVU90 GMV → BLD Apr 13, 22:30 UTCApr 13, 23:00 UTC30m
2026-04-13 CVU90 GMV → BLD Apr 13, 15:50 UTCApr 13, 16:05 UTC15m
2026-04-13 CVU90 GMV → BLD Apr 13, 15:35 UTCApr 13, 16:05 UTC30m

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 N190GC page for operator, model, and routing details .

Mode-S A168C4 frequently asked

What is Mode-S code A168C4?
A168C4 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N190GC.
Where is Mode-S A168C4 registered?
Mode-S code A168C4 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 A168C4 broadcasting right now?
No active broadcast right now. Last signal was 8h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A168C4, octal 50264304, decimal 10,578,116.
What flights does A168C4 operate?
Mode-S A168C4 has broadcast 1 distinct callsign, including CVU90.