Apparatus

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sensors Mode-S transponder

A1F05E

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N224FD · BEECH 400 Beechjet · operated by N224FD LLC

Hex
A1F05E
Octal
50370136
Decimal
10,612,830
Country
US
Tail
N224FD
Type
BE40
No current signal · last broadcast Jul 19, 16:05 UTC
Flights observed
23
Distinct callsigns
1
Country
US
Last broadcast
Jul 19, 16:05 UTC

Last known position

Most recent position reported by Mode-S A1F05E.

Country allocation

The ICAO 24-bit address A1F05E 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
N224FD - 23 2026-07-19

Recent flights last 23

DateFlightRouteTakeoffLandingDuration
2026-07-19 N224FD - Jul 19, 14:55 UTCJul 19, 16:05 UTC1h 10m
2026-07-19 N224FD - Jul 19, 12:45 UTCJul 19, 14:10 UTC1h 25m
2026-07-13 N224FD - Jul 13, 17:45 UTCJul 13, 18:05 UTC20m
2026-07-13 N224FD - Jul 13, 17:00 UTCJul 13, 17:25 UTC25m
2026-07-09 N224FD - Jul 9, 23:25 UTCJul 10, 00:35 UTC1h 10m
2026-07-09 N224FD - Jul 9, 19:05 UTCJul 9, 20:15 UTC1h 10m
2026-07-02 N224FD - Jul 2, 17:35 UTCJul 2, 18:45 UTC1h 10m
2026-07-02 N224FD - Jul 2, 14:55 UTCJul 2, 16:20 UTC1h 25m
2026-06-21 N224FD - Jun 21, 14:50 UTCJun 21, 16:39 UTC1h 50m
2026-06-20 N224FD - Jun 20, 13:04 UTCJun 20, 14:59 UTC1h 55m
2026-06-18 N224FD - Jun 18, 17:00 UTCJun 18, 19:00 UTC2h 0m
2026-06-18 N224FD - Jun 18, 13:55 UTCJun 18, 15:50 UTC1h 55m
2026-06-15 N224FD - Jun 15, 21:04 UTCJun 15, 22:00 UTC55m
2026-06-15 N224FD - Jun 15, 14:00 UTCJun 15, 14:55 UTC55m
2026-06-14 N224FD - Jun 14, 14:30 UTCJun 14, 15:50 UTC1h 20m
2026-06-12 N224FD - Jun 12, 14:10 UTCJun 12, 15:30 UTC1h 20m
2026-06-10 N224FD - Jun 10, 18:50 UTCJun 10, 20:05 UTC1h 15m
2026-06-10 N224FD - Jun 10, 12:05 UTCJun 10, 13:30 UTC1h 25m
2026-06-04 N224FD - Jun 4, 21:15 UTCJun 4, 21:35 UTC20m
2026-06-04 N224FD - Jun 4, 20:05 UTCJun 4, 20:40 UTC35m
2026-06-04 N224FD - Jun 4, 18:55 UTCJun 4, 19:15 UTC20m
2026-06-02 N224FD - Jun 2, 19:00 UTCJun 2, 20:50 UTC1h 50m
2026-06-02 N224FD - Jun 2, 16:05 UTCJun 2, 18:05 UTC2h 0m

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 N224FD page for operator, model, and routing details .

Mode-S A1F05E frequently asked

What is Mode-S code A1F05E?
A1F05E is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N224FD.
Where is Mode-S A1F05E registered?
Mode-S code A1F05E 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 A1F05E broadcasting right now?
No active broadcast right now. Last signal was Jul 19, 16:05 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A1F05E, octal 50370136, decimal 10,612,830.
What flights does A1F05E operate?
Mode-S A1F05E has broadcast 1 distinct callsign, including N224FD.