Apparatus

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sensors Mode-S transponder

A17501

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N193TH · CESSNA 172 Skyhawk · operated by WINGSLEASING LLC

Hex
A17501
Octal
50272401
Decimal
10,581,249
Country
US
Tail
N193TH
Type
C172
No current signal · last broadcast Jul 26, 18:10 UTC
Flights observed
284
Distinct callsigns
1
Country
US
Last broadcast
Jul 26, 18:10 UTC

Last known position

Most recent position reported by Mode-S A17501.

Country allocation

The ICAO 24-bit address A17501 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
N193TH - 284 2026-07-26

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 N193TH - Jul 26, 16:45 UTCJul 26, 18:10 UTC1h 25m
2026-07-25 N193TH - Jul 25, 23:40 UTCJul 26, 00:40 UTC1h 0m
2026-07-24 N193TH - Jul 24, 00:10 UTCJul 24, 01:35 UTC1h 25m
2026-07-23 N193TH HMT → MYF Jul 23, 20:45 UTCJul 23, 21:40 UTC55m
2026-07-23 N193TH - Jul 23, 19:55 UTCJul 23, 20:40 UTC45m
2026-07-23 N193TH - Jul 23, 17:35 UTCJul 23, 18:25 UTC50m
2026-07-23 N193TH - Jul 23, 16:40 UTCJul 23, 17:25 UTC45m
2026-07-22 N193TH MYF → MYF Jul 22, 16:45 UTCJul 22, 17:45 UTC1h 0m
2026-07-22 N193TH - Jul 22, 02:45 UTCJul 22, 03:50 UTC1h 5m
2026-07-22 N193TH MYF → HMT Jul 22, 01:25 UTCJul 22, 02:35 UTC1h 10m
2026-07-21 N193TH - Jul 21, 22:05 UTCJul 21, 23:25 UTC1h 20m
2026-07-21 N193TH MYF → MYF Jul 21, 19:35 UTCJul 21, 20:40 UTC1h 5m
2026-07-20 N193TH BFL → MYF Jul 20, 19:45 UTCJul 20, 21:35 UTC1h 50m
2026-07-20 N193TH BFL → BFL Jul 20, 06:15 UTCJul 20, 06:20 UTC5m
2026-07-20 N193TH BFL → BFL Jul 20, 03:50 UTCJul 20, 06:10 UTC2h 20m
2026-07-17 N193TH BFL → BFL Jul 17, 23:10 UTCJul 18, 00:04 UTC55m
2026-07-17 N193TH BFL → BFL Jul 17, 18:40 UTCJul 17, 19:40 UTC1h 0m
2026-07-17 N193TH BFL → BFL Jul 17, 16:04 UTCJul 17, 16:49 UTC45m
2026-07-17 N193TH BFL → BFL Jul 17, 03:50 UTCJul 17, 04:54 UTC1h 5m
2026-07-16 N193TH - Jul 16, 16:25 UTCJul 16, 17:40 UTC1h 15m
2026-07-16 N193TH BFL → BFL Jul 16, 14:25 UTCJul 16, 15:10 UTC45m
2026-07-16 N193TH BFL → BFL Jul 16, 00:55 UTCJul 16, 02:05 UTC1h 10m
2026-07-15 N193TH BFL → BFL Jul 15, 20:55 UTCJul 15, 22:25 UTC1h 30m
2026-07-15 N193TH BFL → BFL Jul 15, 18:20 UTCJul 15, 19:40 UTC1h 20m
2026-07-15 N193TH BFL → BFL Jul 15, 16:25 UTCJul 15, 17:15 UTC50m
2026-07-15 N193TH BFL → BFL Jul 15, 14:15 UTCJul 15, 15:20 UTC1h 5m
2026-07-15 N193TH BFL → BFL Jul 15, 03:35 UTCJul 15, 04:10 UTC35m
2026-07-15 N193TH BFL → BFL Jul 15, 01:15 UTCJul 15, 02:30 UTC1h 15m
2026-07-14 N193TH BFL → BFL Jul 14, 20:50 UTCJul 14, 21:45 UTC55m
2026-07-14 N193TH BFL → BFL Jul 14, 17:10 UTCJul 14, 17:30 UTC20m
2026-07-14 N193TH BFL → BFL Jul 14, 15:50 UTCJul 14, 17:05 UTC1h 15m
2026-07-11 N193TH BFL → BFL Jul 11, 20:50 UTCJul 11, 21:55 UTC1h 5m
2026-07-11 N193TH BFL → BFL Jul 11, 01:05 UTCJul 11, 02:15 UTC1h 10m
2026-07-10 N193TH BFL → BFL Jul 10, 21:10 UTCJul 10, 22:20 UTC1h 10m
2026-07-10 N193TH BFL → BFL Jul 10, 18:45 UTCJul 10, 20:00 UTC1h 15m
2026-07-10 N193TH BFL → BFL Jul 10, 16:10 UTCJul 10, 17:35 UTC1h 25m
2026-07-10 N193TH BFL → BFL Jul 10, 14:20 UTCJul 10, 15:15 UTC55m
2026-07-10 N193TH BFL → BFL Jul 10, 03:35 UTCJul 10, 04:30 UTC55m
2026-07-09 N193TH - Jul 9, 16:05 UTCJul 9, 17:45 UTC1h 40m
2026-07-09 N193TH BFL → RMY Jul 9, 14:10 UTCJul 9, 15:35 UTC1h 25m
2026-07-09 N193TH BFL → BFL Jul 9, 05:30 UTCJul 9, 06:15 UTC45m
2026-07-08 N193TH BFL → BFL Jul 8, 23:25 UTCJul 9, 00:20 UTC55m
2026-07-08 N193TH BFL → BFL Jul 8, 18:50 UTCJul 8, 21:10 UTC2h 20m
2026-07-07 N193TH BFL → BFL Jul 7, 18:35 UTCJul 7, 19:25 UTC50m
2026-07-07 N193TH BFL → BFL Jul 7, 16:15 UTCJul 7, 17:00 UTC45m
2026-07-07 N193TH BFL → BFL Jul 7, 13:25 UTCJul 7, 13:45 UTC20m
2026-07-07 N193TH BFL → BFL Jul 7, 05:50 UTCJul 7, 06:55 UTC1h 5m
2026-07-06 N193TH BFL → BFL Jul 6, 18:45 UTCJul 6, 19:50 UTC1h 5m
2026-07-06 N193TH BFL → BFL Jul 6, 14:15 UTCJul 6, 14:55 UTC40m
2026-07-03 N193TH BFL → BFL Jul 3, 20:45 UTCJul 3, 22:00 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 N193TH page for operator, model, and routing details .

Mode-S A17501 frequently asked

What is Mode-S code A17501?
A17501 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N193TH.
Where is Mode-S A17501 registered?
Mode-S code A17501 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 A17501 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 18:10 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A17501, octal 50272401, decimal 10,581,249.
What flights does A17501 operate?
Mode-S A17501 has broadcast 1 distinct callsign, including N193TH.