Apparatus

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sensors Mode-S transponder

A1F427

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N225FX · operated by FLEXJET LLC

Hex
A1F427
Octal
50372047
Decimal
10,613,799
Country
US
Tail
N225FX
No current signal · last broadcast Jul 26, 21:45 UTC
Flights observed
118
Distinct callsigns
3
Country
US
Last broadcast
Jul 26, 21:45 UTC

Last known position

Most recent position reported by Mode-S A1F427.

Country allocation

The ICAO 24-bit address A1F427 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 3 distinct

Callsign Airline Flights Last seen
LXJ225 - 115 2026-07-26
BBA19T - 2 2026-05-13
CDR19T - 1 2026-05-11

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 LXJ225 - Jul 26, 21:15 UTCJul 26, 21:45 UTC30m
2026-07-26 LXJ225 - Jul 26, 19:15 UTCJul 26, 20:20 UTC1h 5m
2026-07-25 LXJ225 - Jul 25, 23:15 UTCJul 26, 00:20 UTC1h 5m
2026-07-25 LXJ225 - Jul 25, 15:45 UTCJul 25, 16:45 UTC1h 0m
2026-07-24 LXJ225 - Jul 24, 20:00 UTCJul 24, 21:00 UTC1h 0m
2026-07-24 LXJ225 - Jul 24, 18:10 UTCJul 24, 19:15 UTC1h 5m
2026-07-24 LXJ225 - Jul 24, 16:05 UTCJul 24, 16:45 UTC40m
2026-07-23 LXJ225 - Jul 23, 23:30 UTCJul 24, 00:25 UTC55m
2026-07-23 LXJ225 - Jul 23, 20:50 UTCJul 23, 21:15 UTC25m
2026-07-23 LXJ225 - Jul 23, 16:20 UTCJul 23, 18:40 UTC2h 20m
2026-07-23 LXJ225 - Jul 23, 14:20 UTCJul 23, 15:35 UTC1h 15m
2026-07-22 LXJ225 - Jul 22, 19:45 UTCJul 22, 20:35 UTC50m
2026-07-22 LXJ225 TEB → IAD Jul 22, 18:00 UTCJul 22, 18:55 UTC55m
2026-07-22 LXJ225 - Jul 22, 14:20 UTCJul 22, 15:15 UTC55m
2026-07-22 LXJ225 - Jul 22, 12:05 UTCJul 22, 12:55 UTC50m
2026-07-21 LXJ225 - Jul 21, 20:35 UTCJul 21, 22:20 UTC1h 45m
2026-07-21 LXJ225 JFK → UGN Jul 21, 14:20 UTCJul 21, 16:40 UTC2h 20m
2026-07-21 LXJ225 - Jul 21, 10:55 UTCJul 21, 12:30 UTC1h 35m
2026-07-20 LXJ225 - Jul 20, 21:50 UTCJul 20, 22:55 UTC1h 5m
2026-07-20 LXJ225 - Jul 20, 13:20 UTCJul 20, 18:25 UTC5h 5m
2026-07-19 LXJ225 ROC → SFO Jul 19, 16:30 UTCJul 19, 23:45 UTC7h 15m
2026-07-19 LXJ225 SFZ → ROC Jul 19, 13:25 UTCJul 19, 14:25 UTC1h 0m
2026-07-19 LXJ225 - Jul 19, 11:30 UTCJul 19, 12:30 UTC1h 0m
2026-07-18 LXJ225 - Jul 18, 22:30 UTCJul 18, 23:45 UTC1h 15m
2026-07-18 LXJ225 - Jul 18, 14:25 UTCJul 18, 19:50 UTC5h 25m
2026-07-17 LXJ225 - Jul 17, 22:05 UTCJul 17, 23:00 UTC55m
2026-07-17 LXJ225 - Jul 17, 20:44 UTCJul 17, 21:05 UTC20m
2026-07-17 LXJ225 - Jul 17, 18:25 UTCJul 17, 19:09 UTC45m
2026-07-16 LXJ225 - Jul 16, 19:35 UTCJul 16, 20:25 UTC50m
2026-07-15 LXJ225 - Jul 15, 15:20 UTCJul 15, 16:40 UTC1h 20m
2026-07-15 LXJ225 - Jul 15, 00:30 UTCJul 15, 01:00 UTC30m
2026-07-14 LXJ225 - Jul 14, 22:50 UTCJul 14, 23:35 UTC45m
2026-07-14 LXJ225 - Jul 14, 15:15 UTCJul 14, 19:45 UTC4h 30m
2026-07-13 LXJ225 - Jul 13, 22:10 UTCJul 13, 23:30 UTC1h 20m
2026-07-13 LXJ225 - Jul 13, 18:55 UTCJul 13, 21:15 UTC2h 20m
2026-07-13 LXJ225 SUA → APF Jul 13, 17:35 UTCJul 13, 18:00 UTC25m
2026-07-13 LXJ225 - Jul 13, 14:10 UTCJul 13, 16:40 UTC2h 30m
2026-07-12 LXJ225 - Jul 12, 17:05 UTCJul 12, 22:10 UTC5h 5m
2026-07-12 LXJ225 - Jul 12, 14:20 UTCJul 12, 15:55 UTC1h 35m
2026-07-11 LXJ225 - Jul 11, 14:55 UTCJul 11, 20:45 UTC5h 50m
2026-07-10 LXJ225 - Jul 10, 21:45 UTCJul 10, 22:40 UTC55m
2026-07-10 LXJ225 - Jul 10, 13:15 UTCJul 10, 17:20 UTC4h 5m
2026-07-10 LXJ225 - Jul 10, 11:25 UTCJul 10, 12:05 UTC40m
2026-07-08 LXJ225 - Jul 8, 14:40 UTCJul 8, 15:05 UTC25m
2026-07-08 LXJ225 - Jul 8, 13:10 UTCJul 8, 13:30 UTC20m
2026-07-07 LXJ225 - Jul 7, 23:00 UTCJul 8, 00:25 UTC1h 25m
2026-07-07 LXJ225 - Jul 7, 17:20 UTCJul 7, 18:10 UTC50m
2026-07-07 LXJ225 - Jul 7, 15:55 UTCJul 7, 16:40 UTC45m
2026-07-06 LXJ225 - Jul 6, 22:40 UTCJul 6, 23:55 UTC1h 15m
2026-07-06 LXJ225 - Jul 6, 14:15 UTCJul 6, 21:10 UTC6h 55m

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 N225FX page for operator, model, and routing details .

Mode-S A1F427 frequently asked

What is Mode-S code A1F427?
A1F427 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N225FX.
Where is Mode-S A1F427 registered?
Mode-S code A1F427 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 A1F427 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 21:45 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A1F427, octal 50372047, decimal 10,613,799.
What flights does A1F427 operate?
Mode-S A1F427 has broadcast 3 distinct callsigns, including LXJ225, BBA19T, CDR19T.