Apparatus

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sensors Mode-S transponder

A4E291

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N41369 · PIPER PA-28-140/150/160/180 · operated by ASCENT AVIATION INC

Hex
A4E291
Octal
51161221
Decimal
10,805,905
Country
US
Tail
N41369
Type
P28A
No current signal · last broadcast 9d ago
Flights observed
119
Distinct callsigns
1
Country
US
Last broadcast
9d ago

Last known position

Most recent position reported by Mode-S A4E291.

Country allocation

The ICAO 24-bit address A4E291 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
N41369 - 119 2026-05-20

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-20 N41369 VNY → VNY May 20, 16:30 UTCMay 20, 17:15 UTC45m
2026-05-19 N41369 VNY → VNY May 19, 22:05 UTCMay 19, 22:40 UTC35m
2026-05-19 N41369 WHP → VNY May 19, 19:25 UTCMay 19, 19:45 UTC20m
2026-05-19 N41369 - May 19, 19:00 UTCMay 19, 19:20 UTC20m
2026-05-19 N41369 VNY → WHP May 19, 18:25 UTCMay 19, 18:35 UTC10m
2026-05-19 N41369 VNY → VNY May 19, 15:30 UTCMay 19, 16:25 UTC55m
2026-05-19 N41369 VNY → VNY May 19, 00:05 UTCMay 19, 00:20 UTC15m
2026-05-18 N41369 VNY → VNY May 18, 18:40 UTCMay 18, 19:40 UTC1h 0m
2026-05-18 N41369 VNY → VNY May 18, 18:15 UTCMay 18, 18:35 UTC19m
2026-05-18 N41369 VNY → VNY May 18, 16:40 UTCMay 18, 17:25 UTC45m
2026-05-18 N41369 VNY → VNY May 18, 01:45 UTCMay 18, 03:05 UTC1h 20m
2026-05-17 N41369 VNY → VNY May 17, 23:55 UTCMay 18, 00:35 UTC40m
2026-05-17 N41369 VNY → VNY May 17, 22:05 UTCMay 17, 22:45 UTC40m
2026-05-17 N41369 VNY → VNY May 17, 18:20 UTCMay 17, 19:25 UTC1h 5m
2026-05-15 N41369 VNY → VNY May 15, 23:00 UTCMay 15, 23:50 UTC50m
2026-05-14 N41369 VNY → VNY May 14, 23:50 UTCMay 15, 00:45 UTC55m
2026-05-14 N41369 VNY → VNY May 14, 22:05 UTCMay 14, 22:45 UTC40m
2026-05-14 N41369 - May 14, 19:25 UTCMay 14, 20:30 UTC1h 5m
2026-05-14 N41369 VNY → VNY May 14, 17:40 UTCMay 14, 18:00 UTC20m
2026-05-12 N41369 VNY → VNY May 12, 21:50 UTCMay 12, 22:01 UTC10m
2026-05-08 N41369 - May 8, 21:35 UTCMay 8, 22:35 UTC1h 0m
2026-05-08 N41369 VNY → VNY May 8, 18:40 UTCMay 8, 19:10 UTC30m
2026-05-07 N41369 VNY → VNY May 7, 17:30 UTCMay 7, 18:45 UTC1h 15m
2026-05-06 N41369 - May 6, 16:35 UTCMay 6, 16:50 UTC15m
2026-05-06 N41369 - May 6, 15:35 UTCMay 6, 15:55 UTC20m
2026-05-05 N41369 - May 5, 22:05 UTCMay 5, 23:00 UTC55m
2026-05-05 N41369 - May 5, 18:10 UTCMay 5, 18:45 UTC35m
2026-05-04 N41369 VNY → VNY May 4, 23:20 UTCMay 5, 00:40 UTC1h 20m
2026-05-04 N41369 VNY → VNY May 4, 18:45 UTCMay 4, 19:40 UTC55m
2026-05-03 N41369 - May 3, 21:35 UTCMay 3, 22:49 UTC1h 15m
2026-05-01 N41369 SMO → VNY May 1, 21:50 UTCMay 1, 22:25 UTC35m
2026-05-01 N41369 SMO → SMO May 1, 21:30 UTCMay 1, 21:45 UTC15m
2026-05-01 N41369 - May 1, 20:55 UTCMay 1, 21:25 UTC30m
2026-05-01 N41369 - May 1, 20:35 UTCMay 1, 20:50 UTC15m
2026-05-01 N41369 - May 1, 20:20 UTCMay 1, 20:30 UTC10m
2026-05-01 N41369 VNY → VNY May 1, 17:40 UTCMay 1, 18:45 UTC1h 5m
2026-05-01 N41369 - May 1, 01:15 UTCMay 1, 01:40 UTC25m
2026-05-01 N41369 - May 1, 00:10 UTCMay 1, 00:35 UTC25m
2026-04-30 N41369 - Apr 30, 20:50 UTCApr 30, 22:10 UTC1h 20m
2026-04-30 N41369 - Apr 30, 19:40 UTCApr 30, 20:45 UTC1h 5m
2026-04-30 N41369 VNY → VNY Apr 30, 17:40 UTCApr 30, 18:35 UTC55m
2026-04-30 N41369 - Apr 30, 00:00 UTCApr 30, 01:15 UTC1h 15m
2026-04-29 N41369 - Apr 29, 19:45 UTCApr 29, 21:20 UTC1h 35m
2026-04-29 N41369 - Apr 29, 16:55 UTCApr 29, 17:45 UTC50m
2026-04-29 N41369 - Apr 29, 15:15 UTCApr 29, 15:50 UTC35m
2026-04-28 N41369 - Apr 28, 19:35 UTCApr 28, 22:35 UTC3h 0m
2026-04-28 N41369 VNY → VNY Apr 28, 17:25 UTCApr 28, 18:45 UTC1h 20m
2026-04-27 N41369 - Apr 27, 22:55 UTCApr 27, 23:35 UTC40m
2026-04-27 N41369 VNY → VNY Apr 27, 19:35 UTCApr 27, 20:35 UTC1h 0m
2026-04-27 N41369 - Apr 27, 17:50 UTCApr 27, 18:15 UTC25m

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 N41369 page for operator, model, and routing details .

Mode-S A4E291 frequently asked

What is Mode-S code A4E291?
A4E291 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N41369.
Where is Mode-S A4E291 registered?
Mode-S code A4E291 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 A4E291 broadcasting right now?
No active broadcast right now. Last signal was 9d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A4E291, octal 51161221, decimal 10,805,905.
What flights does A4E291 operate?
Mode-S A4E291 has broadcast 1 distinct callsign, including N41369.