Apparatus

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sensors Mode-S transponder

A4F117

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N4174T · PIPER PA-28-140/150/160/180 · operated by AVERETT UNIVERSITY

Hex
A4F117
Octal
51170427
Decimal
10,809,623
Country
US
Tail
N4174T
Type
P28A
No current signal · last broadcast 18h ago
Flights observed
57
Distinct callsigns
1
Country
US
Last broadcast
18h ago

Last known position

Most recent position reported by Mode-S A4F117.

Country allocation

The ICAO 24-bit address A4F117 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
N4174T - 57 2026-06-02

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-06-02 N4174T DAN → DAN Jun 2, 13:15 UTCJun 2, 14:30 UTC1h 15m
2026-06-02 N4174T - Jun 2, 11:05 UTCJun 2, 12:20 UTC1h 15m
2026-05-29 N4174T - May 29, 15:00 UTCMay 29, 15:45 UTC45m
2026-05-29 N4174T - May 29, 13:25 UTCMay 29, 14:20 UTC55m
2026-05-29 N4174T - May 29, 09:50 UTCMay 29, 12:35 UTC2h 45m
2026-05-28 N4174T - May 28, 19:20 UTCMay 28, 20:20 UTC1h 0m
2026-05-28 N4174T - May 28, 15:10 UTCMay 28, 16:15 UTC1h 5m
2026-05-28 N4174T - May 28, 12:45 UTCMay 28, 12:55 UTC10m
2026-05-28 N4174T - May 28, 11:40 UTCMay 28, 12:00 UTC20m
2026-05-21 N4174T - May 21, 12:15 UTCMay 21, 12:50 UTC35m
2026-05-21 N4174T - May 21, 11:25 UTCMay 21, 11:40 UTC15m
2026-05-19 N4174T DAN → DAN May 19, 11:45 UTCMay 19, 13:45 UTC2h 0m
2026-05-15 N4174T DAN → DAN May 15, 00:55 UTCMay 15, 03:05 UTC2h 10m
2026-05-13 N4174T - May 13, 12:25 UTCMay 13, 13:31 UTC1h 5m
2026-05-04 N4174T - May 4, 15:20 UTCMay 4, 16:20 UTC1h 0m
2026-05-01 N4174T - May 1, 21:55 UTCMay 1, 22:10 UTC15m
2026-05-01 N4174T - May 1, 20:40 UTCMay 1, 20:50 UTC10m
2026-05-01 N4174T - May 1, 16:15 UTCMay 1, 17:10 UTC55m
2026-05-01 N4174T - May 1, 14:15 UTCMay 1, 15:25 UTC1h 10m
2026-05-01 N4174T DAN → DAN May 1, 12:50 UTCMay 1, 13:05 UTC15m
2026-04-30 N4174T - Apr 30, 22:35 UTCApr 30, 22:50 UTC15m
2026-04-30 N4174T - Apr 30, 21:30 UTCApr 30, 21:50 UTC20m
2026-04-30 N4174T - Apr 30, 20:00 UTCApr 30, 20:20 UTC20m
2026-04-30 N4174T - Apr 30, 13:15 UTCApr 30, 14:35 UTC1h 20m
2026-04-30 N4174T DAN → DAN Apr 30, 11:15 UTCApr 30, 12:10 UTC55m
2026-04-27 N4174T DAN → DAN Apr 27, 16:05 UTCApr 27, 17:25 UTC1h 20m
2026-04-24 N4174T - Apr 24, 20:25 UTCApr 24, 21:50 UTC1h 25m
2026-04-24 N4174T - Apr 24, 15:20 UTCApr 24, 17:05 UTC1h 45m
2026-04-24 N4174T - Apr 24, 13:35 UTCApr 24, 13:50 UTC15m
2026-04-24 N4174T DAN → DAN Apr 24, 11:05 UTCApr 24, 12:45 UTC1h 40m
2026-04-23 N4174T DAN → DAN Apr 23, 13:10 UTCApr 23, 14:15 UTC1h 5m
2026-04-23 N4174T - Apr 23, 11:15 UTCApr 23, 12:35 UTC1h 20m
2026-04-22 N4174T - Apr 22, 15:15 UTCApr 22, 16:35 UTC1h 20m
2026-04-21 N4174T DAN → DAN Apr 21, 13:01 UTCApr 21, 14:15 UTC1h 15m
2026-04-21 N4174T DAN → DAN Apr 21, 10:55 UTCApr 21, 11:50 UTC55m
2026-04-20 N4174T - Apr 20, 15:20 UTCApr 20, 16:35 UTC1h 15m
2026-04-18 N4174T - Apr 18, 15:00 UTCApr 18, 16:00 UTC1h 0m
2026-04-18 N4174T - Apr 18, 13:25 UTCApr 18, 14:15 UTC50m
2026-04-18 N4174T DAN → DAN Apr 18, 12:00 UTCApr 18, 12:50 UTC50m
2026-04-17 N4174T DAN → DAN Apr 17, 20:15 UTCApr 17, 20:25 UTC10m
2026-04-17 N4174T - Apr 17, 15:40 UTCApr 17, 16:25 UTC45m
2026-04-17 N4174T - Apr 17, 13:20 UTCApr 17, 13:35 UTC15m
2026-04-17 N4174T - Apr 17, 12:50 UTCApr 17, 13:15 UTC25m
2026-04-17 N4174T DAN → DAN Apr 17, 11:45 UTCApr 17, 12:20 UTC35m
2026-04-16 N4174T - Apr 16, 15:25 UTCApr 16, 16:20 UTC55m
2026-04-16 N4174T - Apr 16, 14:50 UTCApr 16, 15:10 UTC20m
2026-04-16 N4174T - Apr 16, 13:15 UTCApr 16, 14:05 UTC50m
2026-04-16 N4174T DAN → DAN Apr 16, 11:09 UTCApr 16, 11:29 UTC20m
2026-04-16 N4174T DAN → DAN Apr 16, 10:45 UTCApr 16, 11:04 UTC20m
2026-04-15 N4174T - Apr 15, 17:55 UTCApr 15, 18:35 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 N4174T page for operator, model, and routing details .

Mode-S A4F117 frequently asked

What is Mode-S code A4F117?
A4F117 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N4174T.
Where is Mode-S A4F117 registered?
Mode-S code A4F117 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 A4F117 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 A4F117, octal 51170427, decimal 10,809,623.
What flights does A4F117 operate?
Mode-S A4F117 has broadcast 1 distinct callsign, including N4174T.