Apparatus

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sensors Mode-S transponder

A7216D

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N559FX · BOMBARDIER BD-100 Challenger 350 · operated by FLEXJET LLC

Hex
A7216D
Octal
51620555
Decimal
10,953,069
Country
US
Tail
N559FX
Type
CL35
No current signal · last broadcast Jul 26, 20:20 UTC
Flights observed
222
Distinct callsigns
1
Country
US
Last broadcast
Jul 26, 20:20 UTC

Last known position

Most recent position reported by Mode-S A7216D.

Country allocation

The ICAO 24-bit address A7216D 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
LXJ559 - 222 2026-07-26

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 LXJ559 - Jul 26, 16:30 UTCJul 26, 20:20 UTC3h 50m
2026-07-26 LXJ559 - Jul 26, 12:25 UTCJul 26, 14:35 UTC2h 10m
2026-07-25 LXJ559 - Jul 25, 15:50 UTCJul 25, 19:30 UTC3h 40m
2026-07-24 LXJ559 TEB → SCF Jul 24, 14:25 UTCJul 24, 19:05 UTC4h 40m
2026-07-23 LXJ559 SJC → TEB Jul 23, 20:50 UTCJul 24, 01:45 UTC4h 55m
2026-07-23 LXJ559 VNY → SJC Jul 23, 17:35 UTCJul 23, 18:20 UTC45m
2026-07-23 LXJ559 - Jul 23, 14:30 UTCJul 23, 16:10 UTC1h 40m
2026-07-22 LXJ559 - Jul 22, 23:00 UTCJul 23, 00:30 UTC1h 30m
2026-07-22 LXJ559 VNY → CLD Jul 22, 21:40 UTCJul 22, 22:05 UTC25m
2026-07-22 LXJ559 - Jul 22, 19:30 UTCJul 22, 20:25 UTC55m
2026-07-22 LXJ559 - Jul 22, 17:30 UTCJul 22, 17:40 UTC10m
2026-07-22 LXJ559 - Jul 22, 03:50 UTCJul 22, 04:45 UTC55m
2026-07-22 LXJ559 - Jul 22, 00:30 UTCJul 22, 01:30 UTC1h 0m
2026-07-20 LXJ559 - Jul 20, 18:35 UTCJul 20, 19:40 UTC1h 5m
2026-07-20 LXJ559 - Jul 20, 01:35 UTCJul 20, 17:30 UTC15h 55m
2026-07-19 LXJ559 - Jul 19, 23:20 UTCJul 20, 00:45 UTC1h 25m
2026-07-19 LXJ559 - Jul 19, 21:20 UTCJul 19, 21:50 UTC30m
2026-07-19 LXJ559 - Jul 19, 18:15 UTCJul 19, 20:35 UTC2h 20m
2026-07-19 LXJ559 - Jul 19, 14:40 UTCJul 19, 16:50 UTC2h 10m
2026-07-18 LXJ559 - Jul 18, 19:00 UTCJul 18, 22:50 UTC3h 50m
2026-07-18 LXJ559 - Jul 18, 13:00 UTCJul 18, 13:15 UTC15m
2026-07-17 LXJ559 - Jul 17, 19:45 UTCJul 17, 20:29 UTC45m
2026-07-17 LXJ559 - Jul 17, 18:10 UTCJul 17, 18:44 UTC35m
2026-07-17 LXJ559 - Jul 17, 15:35 UTCJul 17, 16:24 UTC50m
2026-07-17 LXJ559 - Jul 17, 11:35 UTCJul 17, 14:00 UTC2h 25m
2026-07-16 LXJ559 - Jul 16, 21:15 UTCJul 16, 21:30 UTC15m
2026-07-16 LXJ559 - Jul 16, 18:15 UTCJul 16, 20:19 UTC2h 5m
2026-07-16 LXJ559 - Jul 16, 15:45 UTCJul 16, 16:40 UTC55m
2026-07-16 LXJ559 - Jul 16, 14:15 UTCJul 16, 14:45 UTC30m
2026-07-16 LXJ559 - Jul 16, 01:05 UTCJul 16, 01:30 UTC25m
2026-07-15 LXJ559 - Jul 15, 20:40 UTCJul 16, 00:00 UTC3h 20m
2026-07-15 LXJ559 - Jul 15, 17:00 UTCJul 15, 19:15 UTC2h 15m
2026-07-14 LXJ559 - Jul 14, 19:30 UTCJul 14, 20:30 UTC1h 0m
2026-07-13 LXJ559 - Jul 13, 16:00 UTCJul 13, 19:40 UTC3h 40m
2026-07-13 LXJ559 PIT → STL Jul 13, 13:15 UTCJul 13, 14:30 UTC1h 15m
2026-07-12 LXJ559 - Jul 12, 23:00 UTCJul 12, 23:55 UTC55m
2026-07-12 LXJ559 - Jul 12, 21:15 UTCJul 12, 22:10 UTC55m
2026-07-12 LXJ559 - Jul 12, 19:30 UTCJul 12, 20:10 UTC40m
2026-07-12 LXJ559 - Jul 12, 16:30 UTCJul 12, 18:15 UTC1h 45m
2026-07-11 LXJ559 - Jul 11, 20:20 UTCJul 12, 00:45 UTC4h 25m
2026-07-11 LXJ559 - Jul 11, 16:55 UTCJul 11, 17:55 UTC1h 0m
2026-07-10 LXJ559 - Jul 10, 23:00 UTCJul 10, 23:50 UTC50m
2026-07-10 LXJ559 - Jul 10, 20:50 UTCJul 10, 21:45 UTC55m
2026-07-10 LXJ559 LAS → APC Jul 10, 05:55 UTCJul 10, 07:10 UTC1h 15m
2026-07-10 LXJ559 - Jul 10, 01:20 UTCJul 10, 02:15 UTC55m
2026-07-09 LXJ559 - Jul 9, 23:05 UTCJul 10, 00:05 UTC1h 0m
2026-07-09 LXJ559 - Jul 9, 00:35 UTCJul 9, 01:40 UTC1h 5m
2026-07-08 LXJ559 - Jul 8, 20:20 UTCJul 8, 21:30 UTC1h 10m
2026-07-08 LXJ559 - Jul 8, 18:10 UTCJul 8, 19:10 UTC1h 0m
2026-07-07 LXJ559 - Jul 7, 20:05 UTCJul 7, 21:20 UTC1h 15m

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 N559FX page for operator, model, and routing details .

Mode-S A7216D frequently asked

What is Mode-S code A7216D?
A7216D is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N559FX.
Where is Mode-S A7216D registered?
Mode-S code A7216D 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 A7216D broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 20:20 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A7216D, octal 51620555, decimal 10,953,069.
What flights does A7216D operate?
Mode-S A7216D has broadcast 1 distinct callsign, including LXJ559.