Apparatus

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sensors Mode-S transponder

ACB193

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N917KF · ROBINSON R-22 Mariner · operated by HILLSBORO AERO ACADEMY LLC

Hex
ACB193
Octal
53130623
Decimal
11,317,651
Country
US
Tail
N917KF
Type
R22
No current signal · last broadcast 1d ago
Flights observed
255
Distinct callsigns
1
Country
US
Last broadcast
1d ago

Last known position

Most recent position reported by Mode-S ACB193.

Country allocation

The ICAO 24-bit address ACB193 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
N917KF - 255 2026-07-13

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-13 N917KF - Jul 13, 14:05 UTCJul 13, 14:55 UTC50m
2026-07-13 N917KF TTD → TTD Jul 13, 01:35 UTCJul 13, 02:40 UTC1h 5m
2026-07-12 N917KF - Jul 12, 23:40 UTCJul 13, 00:25 UTC45m
2026-07-12 N917KF - Jul 12, 21:15 UTCJul 12, 22:25 UTC1h 10m
2026-07-12 N917KF - Jul 12, 19:01 UTCJul 12, 19:50 UTC50m
2026-07-12 N917KF - Jul 12, 16:50 UTCJul 12, 17:55 UTC1h 5m
2026-07-11 N917KF TTD → TTD Jul 11, 02:00 UTCJul 11, 03:05 UTC1h 5m
2026-07-10 N917KF TTD → TTD Jul 10, 19:50 UTCJul 10, 20:50 UTC1h 0m
2026-07-09 N917KF - Jul 9, 23:40 UTCJul 10, 01:05 UTC1h 25m
2026-07-09 N917KF - Jul 9, 21:25 UTCJul 9, 22:15 UTC50m
2026-07-08 N917KF - Jul 8, 23:00 UTCJul 8, 23:55 UTC55m
2026-07-08 N917KF - Jul 8, 19:00 UTCJul 8, 19:55 UTC55m
2026-07-08 N917KF - Jul 8, 13:35 UTCJul 8, 14:25 UTC50m
2026-07-07 N917KF - Jul 7, 17:15 UTCJul 7, 17:45 UTC30m
2026-07-07 N917KF - Jul 7, 14:40 UTCJul 7, 15:30 UTC50m
2026-07-07 N917KF - Jul 7, 05:10 UTCJul 7, 06:40 UTC1h 30m
2026-07-07 N917KF - Jul 7, 00:30 UTCJul 7, 02:05 UTC1h 35m
2026-07-06 N917KF - Jul 6, 21:45 UTCJul 6, 22:25 UTC40m
2026-07-06 N917KF - Jul 6, 19:10 UTCJul 6, 20:00 UTC50m
2026-07-06 N917KF - Jul 6, 16:45 UTCJul 6, 17:45 UTC1h 0m
2026-07-06 N917KF - Jul 6, 13:35 UTCJul 6, 14:05 UTC30m
2026-07-06 N917KF TTD → TTD Jul 6, 02:55 UTCJul 6, 03:35 UTC40m
2026-07-06 N917KF - Jul 6, 00:50 UTCJul 6, 01:20 UTC30m
2026-07-04 N917KF - Jul 4, 00:30 UTCJul 4, 01:35 UTC1h 5m
2026-07-03 N917KF - Jul 3, 22:25 UTCJul 3, 23:20 UTC55m
2026-07-03 N917KF - Jul 3, 21:10 UTCJul 3, 21:30 UTC20m
2026-07-03 N917KF - Jul 3, 20:05 UTCJul 3, 20:40 UTC35m
2026-07-03 N917KF - Jul 3, 17:50 UTCJul 3, 18:40 UTC50m
2026-07-03 N917KF TTD → TTD Jul 3, 14:35 UTCJul 3, 14:45 UTC10m
2026-06-30 N917KF - Jun 30, 20:25 UTCJun 30, 21:30 UTC1h 5m
2026-06-30 N917KF TTD → TTD Jun 30, 17:45 UTCJun 30, 18:30 UTC45m
2026-06-30 N917KF - Jun 30, 01:35 UTCJun 30, 03:00 UTC1h 25m
2026-06-29 N917KF - Jun 29, 22:24 UTCJun 29, 23:34 UTC1h 10m
2026-06-29 N917KF TTD → TTD Jun 29, 20:00 UTCJun 29, 20:44 UTC45m
2026-06-29 N917KF TTD → TTD Jun 29, 02:05 UTCJun 29, 03:14 UTC1h 10m
2026-06-28 N917KF - Jun 28, 23:34 UTCJun 29, 01:00 UTC1h 25m
2026-06-28 N917KF - Jun 28, 20:04 UTCJun 28, 21:34 UTC1h 30m
2026-06-28 N917KF TTD → TTD Jun 28, 18:00 UTCJun 28, 18:44 UTC45m
2026-06-27 N917KF TTD → TTD Jun 27, 19:34 UTCJun 27, 20:14 UTC40m
2026-06-27 N917KF TTD → TTD Jun 27, 13:35 UTCJun 27, 13:44 UTC10m
2026-06-26 N917KF - Jun 26, 21:30 UTCJun 26, 22:14 UTC45m
2026-06-26 N917KF TTD → TTD Jun 26, 19:04 UTCJun 26, 19:55 UTC50m
2026-06-25 N917KF - Jun 25, 23:49 UTCJun 26, 01:10 UTC1h 20m
2026-06-25 N917KF - Jun 25, 21:20 UTCJun 25, 22:20 UTC1h 0m
2026-06-25 N917KF - Jun 25, 19:24 UTCJun 25, 20:25 UTC1h 0m
2026-06-25 N917KF TTD → TTD Jun 25, 16:50 UTCJun 25, 17:49 UTC1h 0m
2026-06-25 N917KF TTD → TTD Jun 25, 14:14 UTCJun 25, 14:55 UTC40m
2026-06-25 N917KF - Jun 25, 08:14 UTCJun 25, 09:25 UTC1h 10m
2026-06-25 N917KF - Jun 25, 05:35 UTCJun 25, 06:35 UTC1h 0m
2026-06-24 N917KF TTD → TTD Jun 24, 21:54 UTCJun 24, 23:24 UTC1h 30m

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 N917KF page for operator, model, and routing details .

Mode-S ACB193 frequently asked

What is Mode-S code ACB193?
ACB193 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N917KF.
Where is Mode-S ACB193 registered?
Mode-S code ACB193 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 ACB193 broadcasting right now?
No active broadcast right now. Last signal was 1d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex ACB193, octal 53130623, decimal 11,317,651.
What flights does ACB193 operate?
Mode-S ACB193 has broadcast 1 distinct callsign, including N917KF.