Apparatus

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sensors Mode-S transponder

A041BF

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N1154W · CESSNA 172 Skyhawk · operated by AEROSIM ACADEMY INC

Hex
A041BF
Octal
50040677
Decimal
10,502,591
Country
US
Tail
N1154W
Type
C172
No current signal · last broadcast 15h ago
Flights observed
269
Distinct callsigns
1
Country
US
Last broadcast
15h ago

Last known position

Most recent position reported by Mode-S A041BF.

Country allocation

The ICAO 24-bit address A041BF 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
LFA328 - 269 2026-07-13

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-13 LFA328 - Jul 13, 18:00 UTCJul 13, 19:00 UTC1h 0m
2026-07-13 LFA328 - Jul 13, 16:40 UTCJul 13, 17:15 UTC35m
2026-07-13 LFA328 SFB → SFB Jul 13, 15:00 UTCJul 13, 15:40 UTC40m
2026-07-13 LFA328 - Jul 13, 13:55 UTCJul 13, 14:25 UTC30m
2026-07-11 LFA328 - Jul 11, 16:55 UTCJul 11, 17:55 UTC1h 0m
2026-07-11 LFA328 - Jul 11, 13:15 UTCJul 11, 15:05 UTC1h 50m
2026-07-11 LFA328 SFB → SFB Jul 11, 10:45 UTCJul 11, 11:15 UTC30m
2026-07-10 LFA328 - Jul 10, 17:50 UTCJul 10, 19:05 UTC1h 15m
2026-07-10 LFA328 SFB → SFB Jul 10, 12:45 UTCJul 10, 14:00 UTC1h 15m
2026-07-09 LFA328 SFB → SFB Jul 9, 21:00 UTCJul 9, 22:20 UTC1h 20m
2026-07-09 LFA328 - Jul 9, 15:50 UTCJul 9, 17:10 UTC1h 20m
2026-07-09 LFA328 - Jul 9, 13:35 UTCJul 9, 14:45 UTC1h 10m
2026-07-08 LFA328 - Jul 8, 18:55 UTCJul 8, 19:15 UTC20m
2026-07-08 LFA328 - Jul 8, 16:20 UTCJul 8, 17:50 UTC1h 30m
2026-07-08 LFA328 - Jul 8, 14:15 UTCJul 8, 15:20 UTC1h 5m
2026-07-08 LFA328 SFB → SFB Jul 8, 11:20 UTCJul 8, 13:05 UTC1h 45m
2026-07-07 LFA328 - Jul 7, 23:40 UTCJul 8, 00:00 UTC20m
2026-07-07 LFA328 - Jul 7, 21:35 UTCJul 7, 22:50 UTC1h 15m
2026-07-07 LFA328 - Jul 7, 18:20 UTCJul 7, 19:45 UTC1h 25m
2026-07-07 LFA328 - Jul 7, 15:10 UTCJul 7, 15:45 UTC35m
2026-07-06 LFA328 - Jul 6, 13:30 UTCJul 6, 14:40 UTC1h 10m
2026-07-05 LFA328 - Jul 5, 13:20 UTCJul 5, 15:00 UTC1h 40m
2026-07-04 LFA328 - Jul 4, 16:25 UTCJul 4, 17:45 UTC1h 20m
2026-07-04 LFA328 - Jul 4, 13:55 UTCJul 4, 15:10 UTC1h 15m
2026-07-04 LFA328 - Jul 4, 11:00 UTCJul 4, 11:50 UTC50m
2026-07-03 LFA328 SFB → SFB Jul 3, 19:20 UTCJul 3, 20:10 UTC50m
2026-07-03 LFA328 SFB → SFB Jul 3, 13:25 UTCJul 3, 15:15 UTC1h 50m
2026-07-03 LFA328 - Jul 3, 11:00 UTCJul 3, 12:20 UTC1h 20m
2026-07-02 LFA328 - Jul 2, 21:35 UTCJul 2, 22:15 UTC40m
2026-07-02 LFA328 - Jul 2, 19:50 UTCJul 2, 20:40 UTC50m
2026-07-02 LFA328 - Jul 2, 13:30 UTCJul 2, 15:20 UTC1h 50m
2026-07-02 LFA328 SFB → SFB Jul 2, 10:55 UTCJul 2, 11:25 UTC30m
2026-07-01 LFA328 - Jul 1, 16:40 UTCJul 1, 18:30 UTC1h 50m
2026-07-01 LFA328 - Jul 1, 11:35 UTCJul 1, 13:15 UTC1h 40m
2026-06-30 LFA328 SFB → SFB Jun 30, 13:20 UTCJun 30, 15:40 UTC2h 20m
2026-06-30 LFA328 SFB → SFB Jun 30, 10:35 UTCJun 30, 12:15 UTC1h 40m
2026-06-29 LFA328 - Jun 29, 16:29 UTCJun 29, 17:45 UTC1h 15m
2026-06-29 LFA328 - Jun 29, 13:19 UTCJun 29, 15:09 UTC1h 50m
2026-06-29 LFA328 SFB → SFB Jun 29, 10:29 UTCJun 29, 11:45 UTC1h 15m
2026-06-28 LFA328 - Jun 28, 13:45 UTCJun 28, 15:29 UTC1h 45m
2026-06-28 LFA328 SFB → SFB Jun 28, 11:04 UTCJun 28, 12:50 UTC1h 45m
2026-06-27 LFA328 - Jun 27, 17:39 UTCJun 27, 18:39 UTC1h 0m
2026-06-27 LFA328 SFB → SFB Jun 27, 13:35 UTCJun 27, 14:39 UTC1h 5m
2026-06-27 LFA328 - Jun 27, 01:35 UTCJun 27, 03:09 UTC1h 35m
2026-06-26 LFA328 - Jun 26, 21:04 UTCJun 26, 22:40 UTC1h 35m
2026-06-26 LFA328 - Jun 26, 18:29 UTCJun 26, 19:30 UTC1h 0m
2026-06-26 LFA328 - Jun 26, 17:00 UTCJun 26, 17:50 UTC50m
2026-06-26 LFA328 SFB → SFB Jun 26, 13:49 UTCJun 26, 15:15 UTC1h 25m
2026-06-26 LFA328 SFB → SFB Jun 26, 10:30 UTCJun 26, 12:24 UTC1h 55m
2026-06-25 LFA328 - Jun 25, 22:14 UTCJun 25, 23:34 UTC1h 20m

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 N1154W page for operator, model, and routing details .

Mode-S A041BF frequently asked

What is Mode-S code A041BF?
A041BF is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N1154W.
Where is Mode-S A041BF registered?
Mode-S code A041BF 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 A041BF broadcasting right now?
No active broadcast right now. Last signal was 15h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A041BF, octal 50040677, decimal 10,502,591.
What flights does A041BF operate?
Mode-S A041BF has broadcast 1 distinct callsign, including LFA328.