Apparatus

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sensors Mode-S transponder

A185B8

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N19783 · CESSNA 177 Cardinal · operated by SKY HI INC

Hex
A185B8
Octal
50302670
Decimal
10,585,528
Country
US
Tail
N19783
Type
C177
No current signal · last broadcast Jul 26, 16:40 UTC
Flights observed
67
Distinct callsigns
1
Country
US
Last broadcast
Jul 26, 16:40 UTC

Last known position

Most recent position reported by Mode-S A185B8.

Country allocation

The ICAO 24-bit address A185B8 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
N19783 - 67 2026-07-26

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 N19783 - Jul 26, 16:10 UTCJul 26, 16:40 UTC30m
2026-07-25 N19783 - Jul 25, 17:20 UTCJul 25, 20:10 UTC2h 50m
2026-07-25 N19783 - Jul 25, 12:20 UTCJul 25, 14:30 UTC2h 10m
2026-07-18 N19783 - Jul 18, 19:50 UTCJul 18, 22:30 UTC2h 40m
2026-07-18 N19783 - Jul 18, 15:55 UTCJul 18, 17:25 UTC1h 30m
2026-07-18 N19783 - Jul 18, 11:10 UTCJul 18, 14:35 UTC3h 25m
2026-07-15 N19783 - Jul 15, 12:55 UTCJul 15, 14:10 UTC1h 15m
2026-07-12 N19783 FDK → FDK Jul 12, 01:15 UTCJul 12, 01:35 UTC20m
2026-06-30 N19783 - Jun 30, 17:50 UTCJun 30, 18:45 UTC55m
2026-06-29 N19783 - Jun 29, 18:34 UTCJun 29, 19:09 UTC35m
2026-06-25 N19783 - Jun 25, 20:30 UTCJun 25, 20:59 UTC30m
2026-06-25 N19783 - Jun 25, 13:09 UTCJun 25, 14:04 UTC55m
2026-06-24 N19783 - Jun 24, 22:04 UTCJun 24, 22:45 UTC40m
2026-06-24 N19783 - Jun 24, 17:50 UTCJun 24, 18:50 UTC1h 0m
2026-06-22 N19783 - Jun 22, 14:19 UTCJun 22, 14:29 UTC10m
2026-06-22 N19783 - Jun 22, 13:39 UTCJun 22, 14:14 UTC35m
2026-06-19 N19783 - Jun 19, 13:54 UTCJun 19, 15:14 UTC1h 20m
2026-06-19 N19783 - Jun 19, 12:29 UTCJun 19, 13:14 UTC45m
2026-06-17 N19783 - Jun 17, 18:50 UTCJun 17, 19:50 UTC1h 0m
2026-06-16 N19783 - Jun 16, 17:35 UTCJun 16, 18:29 UTC55m
2026-06-14 N19783 FDK → FDK Jun 14, 11:50 UTCJun 14, 12:40 UTC50m
2026-06-12 N19783 FDK → FDK Jun 12, 11:25 UTCJun 12, 12:05 UTC40m
2026-06-06 N19783 - Jun 6, 18:19 UTCJun 6, 19:10 UTC50m
2026-06-03 N19783 - Jun 3, 13:20 UTCJun 3, 14:25 UTC1h 5m
2026-06-02 N19783 - Jun 2, 18:30 UTCJun 2, 19:05 UTC35m
2026-06-02 N19783 - Jun 2, 16:05 UTCJun 2, 16:40 UTC35m
2026-06-01 N19783 - Jun 1, 12:55 UTCJun 1, 14:00 UTC1h 5m
2026-05-31 N19783 - May 31, 14:20 UTCMay 31, 16:10 UTC1h 50m
2026-05-31 N19783 - May 31, 12:35 UTCMay 31, 13:20 UTC45m
2026-05-30 N19783 - May 30, 18:15 UTCMay 30, 18:55 UTC40m
2026-05-30 N19783 - May 30, 13:10 UTCMay 30, 14:45 UTC1h 35m
2026-05-29 N19783 - May 29, 21:15 UTCMay 29, 21:45 UTC30m
2026-05-29 N19783 - May 29, 14:55 UTCMay 29, 15:35 UTC40m
2026-05-29 N19783 - May 29, 13:05 UTCMay 29, 14:00 UTC55m
2026-05-28 N19783 - May 28, 21:30 UTCMay 28, 22:05 UTC35m
2026-05-28 N19783 - May 28, 16:20 UTCMay 28, 17:10 UTC50m
2026-05-28 N19783 - May 28, 12:20 UTCMay 28, 13:05 UTC45m
2026-05-20 N19783 - May 20, 13:20 UTCMay 20, 14:00 UTC40m
2026-05-19 N19783 - May 19, 17:50 UTCMay 19, 19:05 UTC1h 15m
2026-05-15 N19783 - May 15, 20:15 UTCMay 15, 21:05 UTC50m
2026-05-15 N19783 - May 15, 18:35 UTCMay 15, 19:15 UTC40m
2026-05-15 N19783 - May 15, 15:20 UTCMay 15, 17:05 UTC1h 45m
2026-05-13 N19783 - May 13, 13:15 UTCMay 13, 14:05 UTC50m
2026-05-12 N19783 - May 12, 22:01 UTCMay 12, 23:01 UTC1h 0m
2026-05-10 N19783 - May 10, 14:34 UTCMay 10, 15:45 UTC1h 10m
2026-05-09 N19783 - May 9, 18:50 UTCMay 9, 19:14 UTC25m
2026-05-09 N19783 - May 9, 13:15 UTCMay 9, 14:00 UTC45m
2026-05-07 N19783 - May 7, 21:25 UTCMay 7, 22:25 UTC1h 0m
2026-05-07 N19783 - May 7, 13:30 UTCMay 7, 14:35 UTC1h 5m
2026-05-03 N19783 - May 3, 13:00 UTCMay 3, 13:55 UTC55m

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 N19783 page for operator, model, and routing details .

Mode-S A185B8 frequently asked

What is Mode-S code A185B8?
A185B8 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N19783.
Where is Mode-S A185B8 registered?
Mode-S code A185B8 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 A185B8 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 16:40 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A185B8, octal 50302670, decimal 10,585,528.
What flights does A185B8 operate?
Mode-S A185B8 has broadcast 1 distinct callsign, including N19783.