Apparatus

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sensors Mode-S transponder

AD44F2

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N954QS · CESSNA 680 Citation Sovereign · operated by BWS INDUSTRIES LLC, HENNY PENNY CORP, JET ATA LLC, JJJ AVIATION LLC, KEMIN INDUSTRIES INC, MINGLEDORFFS INC

Hex
AD44F2
Octal
53242362
Decimal
11,355,378
Country
US
Tail
N954QS
Type
C680
No current signal · last broadcast 11h ago
Flights observed
245
Distinct callsigns
2
Country
US
Last broadcast
11h ago

Last known position

Most recent position reported by Mode-S AD44F2.

Country allocation

The ICAO 24-bit address AD44F2 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 2 distinct

Callsign Airline Flights Last seen
EJA954 - 231 2026-07-13
N954QS - 14 2026-07-10

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-13 EJA954 - Jul 13, 22:25 UTCJul 14, 00:05 UTC1h 40m
2026-07-13 EJA954 - Jul 13, 20:10 UTCJul 13, 20:40 UTC30m
2026-07-13 EJA954 - Jul 13, 18:25 UTCJul 13, 19:10 UTC45m
2026-07-13 EJA954 - Jul 13, 15:30 UTCJul 13, 17:20 UTC1h 50m
2026-07-13 EJA954 - Jul 13, 13:20 UTCJul 13, 13:45 UTC25m
2026-07-12 EJA954 - Jul 12, 19:55 UTCJul 12, 23:30 UTC3h 35m
2026-07-12 EJA954 - Jul 12, 17:20 UTCJul 12, 18:15 UTC55m
2026-07-10 N954QS - Jul 10, 16:35 UTCJul 10, 21:45 UTC5h 11m
2026-07-10 EJA954 - Jul 10, 13:35 UTCJul 10, 15:25 UTC1h 50m
2026-07-10 EJA954 AUO → SRQ Jul 10, 11:45 UTCJul 10, 12:45 UTC1h 0m
2026-07-09 EJA954 - Jul 9, 17:25 UTCJul 9, 17:55 UTC30m
2026-07-09 EJA954 - Jul 9, 12:35 UTCJul 9, 13:50 UTC1h 15m
2026-07-09 EJA954 - Jul 9, 10:00 UTCJul 9, 11:20 UTC1h 20m
2026-07-08 EJA954 - Jul 8, 19:30 UTCJul 8, 19:50 UTC20m
2026-07-08 EJA954 - Jul 8, 15:40 UTCJul 8, 18:25 UTC2h 45m
2026-07-08 EJA954 - Jul 8, 12:35 UTCJul 8, 14:40 UTC2h 5m
2026-07-07 EJA954 MVY → DPA Jul 7, 22:25 UTCJul 7, 23:10 UTC45m
2026-07-07 EJA954 MVY → DPA Jul 7, 21:00 UTCJul 7, 21:35 UTC35m
2026-07-07 EJA954 MVY → DPA Jul 7, 18:15 UTCJul 7, 19:40 UTC1h 25m
2026-07-07 EJA954 MVY → DPA Jul 7, 14:00 UTCJul 7, 16:35 UTC2h 35m
2026-07-07 EJA954 MVY → DPA Jul 7, 12:15 UTCJul 7, 13:10 UTC55m
2026-07-06 EJA954 MVY → DPA Jul 6, 22:25 UTCJul 6, 23:30 UTC1h 5m
2026-07-06 EJA954 MVY → DPA Jul 6, 20:00 UTCJul 6, 20:15 UTC15m
2026-07-06 EJA954 MVY → DPA Jul 6, 18:15 UTCJul 6, 18:35 UTC20m
2026-07-06 EJA954 MVY → DPA Jul 6, 16:00 UTCJul 6, 17:25 UTC1h 25m
2026-07-05 EJA954 MVY → DPA Jul 5, 18:25 UTCJul 5, 19:25 UTC1h 0m
2026-07-05 EJA954 MVY → DPA Jul 5, 16:25 UTCJul 5, 16:50 UTC25m
2026-07-05 EJA954 MVY → DPA Jul 5, 14:20 UTCJul 5, 15:20 UTC1h 0m
2026-07-04 EJA954 MVY → DPA Jul 4, 20:25 UTCJul 4, 20:40 UTC15m
2026-07-03 EJA954 MVY → DPA Jul 3, 19:15 UTCJul 3, 19:50 UTC35m
2026-07-03 EJA954 MVY → DPA Jul 3, 14:10 UTCJul 3, 14:45 UTC35m
2026-07-02 EJA954 MVY → DPA Jul 2, 22:20 UTCJul 2, 23:00 UTC40m
2026-07-02 EJA954 MVY → DPA Jul 2, 20:40 UTCJul 2, 21:00 UTC20m
2026-07-02 EJA954 MVY → DPA Jul 2, 18:45 UTCJul 2, 19:05 UTC20m
2026-07-02 EJA954 MVY → DPA Jul 2, 17:05 UTCJul 2, 17:40 UTC35m
2026-07-02 EJA954 MVY → DPA Jul 2, 14:35 UTCJul 2, 15:15 UTC40m
2026-07-02 EJA954 MVY → DPA Jul 2, 13:05 UTCJul 2, 13:55 UTC50m
2026-07-01 EJA954 MVY → DPA Jul 1, 19:30 UTCJul 1, 20:20 UTC50m
2026-07-01 EJA954 MVY → DPA Jul 1, 15:45 UTCJul 1, 18:15 UTC2h 30m
2026-07-01 EJA954 MVY → DPA Jul 1, 13:30 UTCJul 1, 14:00 UTC30m
2026-06-30 N954QS - Jun 30, 21:05 UTCJun 30, 21:35 UTC30m
2026-06-21 N954QS - Jun 21, 13:15 UTCJun 21, 16:19 UTC3h 5m
2026-06-20 EJA954 MVY → DPA Jun 20, 21:34 UTCJun 20, 22:50 UTC1h 15m
2026-06-20 EJA954 MVY → DPA Jun 20, 16:49 UTCJun 20, 20:25 UTC3h 35m
2026-06-20 N954QS - Jun 20, 14:29 UTCJun 20, 15:49 UTC1h 20m
2026-06-19 N954QS - Jun 19, 13:50 UTCJun 19, 15:34 UTC1h 45m
2026-06-19 EJA954 MVY → DPA Jun 19, 10:35 UTCJun 19, 11:49 UTC1h 15m
2026-06-18 EJA954 MVY → DPA Jun 18, 20:40 UTCJun 18, 22:20 UTC1h 40m
2026-06-18 EJA954 MVY → DPA Jun 18, 19:05 UTCJun 18, 19:55 UTC50m
2026-06-18 EJA954 MVY → DPA Jun 18, 15:55 UTCJun 18, 18:00 UTC2h 5m

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 N954QS page for operator, model, and routing details .

Mode-S AD44F2 frequently asked

What is Mode-S code AD44F2?
AD44F2 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N954QS.
Where is Mode-S AD44F2 registered?
Mode-S code AD44F2 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 AD44F2 broadcasting right now?
No active broadcast right now. Last signal was 11h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AD44F2, octal 53242362, decimal 11,355,378.
What flights does AD44F2 operate?
Mode-S AD44F2 has broadcast 2 distinct callsigns, including EJA954, N954QS.