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sensors Mode-S transponder

A17D66

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N1952K · CIRRUS SR-22 · operated by WARD & WARD MANAGEMENT CONSULTANTS INC

Hex
A17D66
Octal
50276546
Decimal
10,583,398
Country
US
Tail
N1952K
Type
SR22
No current signal · last broadcast Jul 24, 19:15 UTC
Flights observed
60
Distinct callsigns
1
Country
US
Last broadcast
Jul 24, 19:15 UTC

Last known position

Most recent position reported by Mode-S A17D66.

Country allocation

The ICAO 24-bit address A17D66 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
N1952K - 60 2026-07-24

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-24 N1952K - Jul 24, 14:45 UTCJul 24, 19:15 UTC4h 30m
2026-07-21 N1952K - Jul 21, 20:25 UTCJul 21, 21:20 UTC55m
2026-07-21 N1952K - Jul 21, 18:10 UTCJul 21, 19:30 UTC1h 20m
2026-07-21 N1952K - Jul 21, 15:45 UTCJul 21, 17:15 UTC1h 30m
2026-07-19 N1952K - Jul 19, 17:15 UTCJul 19, 19:05 UTC1h 50m
2026-07-17 N1952K - Jul 17, 18:40 UTCJul 17, 19:05 UTC25m
2026-07-17 N1952K - Jul 17, 17:25 UTCJul 17, 18:00 UTC35m
2026-07-13 N1952K - Jul 13, 16:05 UTCJul 13, 16:45 UTC40m
2026-07-13 N1952K - Jul 13, 14:45 UTCJul 13, 15:05 UTC20m
2026-07-12 N1952K - Jul 12, 15:40 UTCJul 12, 18:05 UTC2h 25m
2026-07-08 N1952K - Jul 8, 15:40 UTCJul 8, 18:30 UTC2h 50m
2026-07-08 N1952K - Jul 8, 14:30 UTCJul 8, 15:05 UTC35m
2026-07-06 N1952K - Jul 6, 15:20 UTCJul 6, 15:55 UTC35m
2026-07-05 N1952K - Jul 5, 22:45 UTCJul 5, 23:20 UTC35m
2026-07-04 N1952K - Jul 4, 18:35 UTCJul 4, 19:10 UTC35m
2026-07-02 N1952K - Jul 2, 16:35 UTCJul 2, 17:15 UTC40m
2026-07-01 N1952K - Jul 1, 19:45 UTCJul 1, 20:00 UTC15m
2026-07-01 N1952K - Jul 1, 16:45 UTCJul 1, 16:55 UTC10m
2026-06-29 N1952K - Jun 29, 15:30 UTCJun 29, 16:00 UTC30m
2026-06-29 N1952K - Jun 29, 14:19 UTCJun 29, 14:44 UTC25m
2026-06-27 N1952K - Jun 27, 16:24 UTCJun 27, 17:55 UTC1h 30m
2026-06-24 N1952K - Jun 24, 15:54 UTCJun 24, 16:14 UTC20m
2026-06-24 N1952K - Jun 24, 14:50 UTCJun 24, 15:24 UTC35m
2026-06-20 N1952K - Jun 20, 16:29 UTCJun 20, 16:49 UTC20m
2026-06-20 N1952K - Jun 20, 14:44 UTCJun 20, 15:09 UTC25m
2026-06-18 N1952K - Jun 18, 20:55 UTCJun 18, 21:10 UTC15m
2026-06-18 N1952K - Jun 18, 19:55 UTCJun 18, 20:25 UTC30m
2026-06-15 N1952K - Jun 15, 15:35 UTCJun 15, 16:09 UTC35m
2026-06-15 N1952K - Jun 15, 14:40 UTCJun 15, 15:04 UTC25m
2026-06-12 N1952K - Jun 12, 21:05 UTCJun 12, 21:30 UTC25m
2026-06-12 N1952K - Jun 12, 20:10 UTCJun 12, 20:30 UTC20m
2026-06-11 N1952K - Jun 11, 19:45 UTCJun 11, 20:50 UTC1h 5m
2026-06-11 N1952K - Jun 11, 18:15 UTCJun 11, 19:10 UTC55m
2026-06-09 N1952K - Jun 9, 20:00 UTCJun 9, 20:20 UTC20m
2026-06-09 N1952K - Jun 9, 19:20 UTCJun 9, 19:30 UTC10m
2026-06-09 N1952K - Jun 9, 13:25 UTCJun 9, 14:25 UTC1h 0m
2026-06-06 N1952K - Jun 6, 21:40 UTCJun 6, 23:24 UTC1h 45m
2026-06-05 N1952K - Jun 5, 22:05 UTCJun 5, 22:25 UTC20m
2026-06-05 N1952K - Jun 5, 20:30 UTCJun 5, 21:05 UTC35m
2026-06-03 N1952K - Jun 3, 19:25 UTCJun 3, 20:05 UTC40m
2026-06-03 N1952K - Jun 3, 14:10 UTCJun 3, 14:40 UTC30m
2026-06-01 N1952K - Jun 1, 17:10 UTCJun 1, 17:45 UTC35m
2026-06-01 N1952K - Jun 1, 16:10 UTCJun 1, 16:35 UTC25m
2026-05-29 N1952K - May 29, 21:50 UTCMay 29, 22:30 UTC40m
2026-05-26 N1952K - May 26, 20:40 UTCMay 26, 21:14 UTC35m
2026-05-21 N1952K - May 21, 22:00 UTCMay 21, 22:35 UTC35m
2026-05-20 N1952K - May 20, 18:40 UTCMay 20, 19:20 UTC40m
2026-05-13 N1952K - May 13, 20:45 UTCMay 13, 21:25 UTC40m
2026-05-11 N1952K - May 11, 17:50 UTCMay 11, 18:25 UTC35m
2026-05-08 N1952K - May 8, 21:50 UTCMay 8, 22:30 UTC40m

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 N1952K page for operator, model, and routing details .

Mode-S A17D66 frequently asked

What is Mode-S code A17D66?
A17D66 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N1952K.
Where is Mode-S A17D66 registered?
Mode-S code A17D66 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 A17D66 broadcasting right now?
No active broadcast right now. Last signal was Jul 24, 19:15 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A17D66, octal 50276546, decimal 10,583,398.
What flights does A17D66 operate?
Mode-S A17D66 has broadcast 1 distinct callsign, including N1952K.