Apparatus

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sensors Mode-S transponder

ADA546

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N979C · PIPER PA-28-140/150/160/180 · operated by SKYWEST LEASING INC

Hex
ADA546
Octal
53322506
Decimal
11,380,038
Country
US
Tail
N979C
Type
P28A
No current signal · last broadcast 18h ago
Flights observed
90
Distinct callsigns
1
Country
US
Last broadcast
18h ago

Last known position

Most recent position reported by Mode-S ADA546.

Country allocation

The ICAO 24-bit address ADA546 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
ASI717 - 90 2026-06-21

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-06-21 ASI717 DVT → DVT Jun 21, 03:14 UTCJun 21, 04:39 UTC1h 25m
2026-06-20 ASI717 DVT → DVT Jun 20, 16:09 UTCJun 20, 17:34 UTC1h 25m
2026-06-19 ASI717 - Jun 19, 13:04 UTCJun 19, 15:34 UTC2h 30m
2026-06-19 ASI717 DVT → DVT Jun 19, 07:45 UTCJun 19, 11:09 UTC3h 25m
2026-06-19 ASI717 - Jun 19, 05:30 UTCJun 19, 06:04 UTC35m
2026-06-19 ASI717 DVT → DVT Jun 19, 05:09 UTCJun 19, 05:24 UTC15m
2026-06-19 ASI717 DVT → DVT Jun 19, 04:50 UTCJun 19, 05:05 UTC15m
2026-06-18 ASI717 - Jun 18, 20:45 UTCJun 18, 21:50 UTC1h 5m
2026-06-18 ASI717 - Jun 18, 20:20 UTCJun 18, 20:40 UTC20m
2026-06-18 ASI717 - Jun 18, 15:00 UTCJun 18, 17:15 UTC2h 15m
2026-06-17 ASI717 - Jun 17, 21:25 UTCJun 17, 23:25 UTC2h 0m
2026-06-17 ASI717 - Jun 17, 19:20 UTCJun 17, 20:30 UTC1h 10m
2026-06-17 ASI717 - Jun 17, 14:00 UTCJun 17, 14:40 UTC40m
2026-06-16 ASI717 - Jun 16, 14:55 UTCJun 16, 15:05 UTC10m
2026-06-16 ASI717 - Jun 16, 14:09 UTCJun 16, 14:20 UTC10m
2026-06-15 ASI717 DVT → DVT Jun 15, 17:10 UTCJun 15, 18:04 UTC55m
2026-06-14 ASI717 DVT → DVT Jun 14, 15:15 UTCJun 14, 16:35 UTC1h 20m
2026-06-13 ASI717 - Jun 13, 20:25 UTCJun 13, 22:50 UTC2h 25m
2026-06-13 ASI717 - Jun 13, 16:45 UTCJun 13, 17:15 UTC30m
2026-06-13 ASI717 - Jun 13, 14:30 UTCJun 13, 15:55 UTC1h 25m
2026-06-12 ASI717 DVT → DVT Jun 12, 22:00 UTCJun 12, 23:30 UTC1h 30m
2026-06-12 ASI717 DVT → DVT Jun 12, 15:00 UTCJun 12, 16:40 UTC1h 40m
2026-06-11 ASI717 - Jun 11, 20:15 UTCJun 11, 20:50 UTC35m
2026-06-11 ASI717 - Jun 11, 18:15 UTCJun 11, 18:50 UTC35m
2026-06-11 ASI717 - Jun 11, 13:50 UTCJun 11, 16:50 UTC3h 0m
2026-06-10 ASI717 - Jun 10, 16:40 UTCJun 10, 18:25 UTC1h 45m
2026-06-09 ASI717 DVT → DVT Jun 9, 18:05 UTCJun 9, 20:55 UTC2h 50m
2026-06-08 ASI717 - Jun 8, 17:40 UTCJun 8, 19:30 UTC1h 50m
2026-06-08 ASI717 - Jun 8, 15:04 UTCJun 8, 15:35 UTC30m
2026-06-05 ASI717 DVT → DVT Jun 5, 21:40 UTCJun 5, 22:05 UTC25m
2026-06-05 ASI717 DVT → DVT Jun 5, 13:15 UTCJun 5, 16:00 UTC2h 45m
2026-06-04 ASI717 - Jun 4, 13:30 UTCJun 4, 16:30 UTC3h 0m
2026-06-03 ASI717 - Jun 3, 21:20 UTCJun 3, 21:50 UTC30m
2026-06-03 ASI717 - Jun 3, 19:55 UTCJun 3, 20:25 UTC30m
2026-06-03 ASI717 DVT → DVT Jun 3, 00:50 UTCJun 3, 04:20 UTC3h 30m
2026-06-02 ASI717 DVT → DVT Jun 2, 16:00 UTCJun 2, 18:40 UTC2h 40m
2026-06-02 ASI717 DVT → DVT Jun 2, 13:15 UTCJun 2, 14:30 UTC1h 15m
2026-06-01 ASI717 - Jun 1, 16:15 UTCJun 1, 16:45 UTC30m
2026-06-01 ASI717 - Jun 1, 13:40 UTCJun 1, 14:30 UTC50m
2026-06-01 ASI717 - Jun 1, 05:00 UTCJun 1, 06:40 UTC1h 40m
2026-06-01 ASI717 - Jun 1, 02:40 UTCJun 1, 03:45 UTC1h 5m
2026-05-31 ASI717 DVT → DVT May 31, 15:15 UTCMay 31, 16:45 UTC1h 30m
2026-05-31 ASI717 DVT → DVT May 31, 13:20 UTCMay 31, 14:10 UTC50m
2026-05-30 ASI717 DVT → DVT May 30, 16:20 UTCMay 30, 19:05 UTC2h 45m
2026-05-30 ASI717 - May 30, 13:50 UTCMay 30, 15:00 UTC1h 10m
2026-05-29 ASI717 DVT → DVT May 29, 18:25 UTCMay 29, 19:35 UTC1h 10m
2026-05-29 ASI717 - May 29, 15:20 UTCMay 29, 16:55 UTC1h 35m
2026-05-28 ASI717 - May 28, 17:15 UTCMay 28, 17:45 UTC30m
2026-05-28 ASI717 - May 28, 14:45 UTCMay 28, 15:40 UTC55m
2026-05-27 ASI717 - May 27, 17:30 UTCMay 27, 18:45 UTC1h 15m

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 N979C page for operator, model, and routing details .

Mode-S ADA546 frequently asked

What is Mode-S code ADA546?
ADA546 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N979C.
Where is Mode-S ADA546 registered?
Mode-S code ADA546 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 ADA546 broadcasting right now?
No active broadcast right now. Last signal was 18h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex ADA546, octal 53322506, decimal 11,380,038.
What flights does ADA546 operate?
Mode-S ADA546 has broadcast 1 distinct callsign, including ASI717.