Apparatus

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sensors Mode-S transponder

ACF23D

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N933QS · CESSNA 680 Citation Latitude · operated by NETJETS SALES INC, ADVENTURE AIRWAYS LLC, BICON LLC, JOHNSON CARL, CLOVER INVESTORS LLC, DELTA WINGS LLC

Hex
ACF23D
Octal
53171075
Decimal
11,334,205
Country
US
Tail
N933QS
Type
C68A
No current signal · last broadcast 2d ago
Flights observed
85
Distinct callsigns
2
Country
US
Last broadcast
2d ago

Last known position

Most recent position reported by Mode-S ACF23D.

Country allocation

The ICAO 24-bit address ACF23D 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
EJA933 NetJets 78 2026-05-27
N933QS - 7 2026-05-01

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-27 EJA933 FMY → LAL May 27, 16:20 UTCMay 27, 20:25 UTC4h 5m
2026-05-10 EJA933 FMY → LAL May 10, 18:49 UTCMay 10, 21:04 UTC2h 15m
2026-05-09 EJA933 FMY → LAL May 9, 21:30 UTCMay 9, 22:00 UTC30m
2026-05-09 EJA933 FMY → LAL May 9, 19:10 UTCMay 9, 20:20 UTC1h 10m
2026-05-09 EJA933 FMY → LAL May 9, 17:00 UTCMay 9, 17:15 UTC15m
2026-05-09 EJA933 FMY → LAL May 9, 15:15 UTCMay 9, 16:10 UTC55m
2026-05-08 EJA933 FMY → LAL May 8, 21:20 UTCMay 8, 22:35 UTC1h 15m
2026-05-08 EJA933 FMY → LAL May 8, 18:05 UTCMay 8, 20:15 UTC2h 10m
2026-05-08 EJA933 FMY → LAL May 8, 15:40 UTCMay 8, 16:55 UTC1h 15m
2026-05-08 EJA933 FMY → LAL May 8, 13:15 UTCMay 8, 14:35 UTC1h 20m
2026-05-07 EJA933 FMY → LAL May 7, 21:10 UTCMay 7, 22:35 UTC1h 25m
2026-05-07 EJA933 FMY → LAL May 7, 17:40 UTCMay 7, 20:15 UTC2h 35m
2026-05-07 EJA933 FMY → LAL May 7, 13:45 UTCMay 7, 17:00 UTC3h 15m
2026-05-06 EJA933 FMY → LAL May 6, 22:20 UTCMay 6, 23:45 UTC1h 25m
2026-05-06 EJA933 FMY → LAL May 6, 16:25 UTCMay 6, 19:15 UTC2h 49m
2026-05-06 EJA933 FMY → LAL May 6, 14:05 UTCMay 6, 15:30 UTC1h 25m
2026-05-06 EJA933 FMY → LAL May 6, 12:01 UTCMay 6, 12:10 UTC10m
2026-05-05 EJA933 FMY → LAL May 5, 20:45 UTCMay 5, 21:45 UTC1h 0m
2026-05-05 EJA933 FMY → LAL May 5, 12:40 UTCMay 5, 16:25 UTC3h 45m
2026-05-04 EJA933 FMY → LAL May 4, 22:20 UTCMay 4, 23:05 UTC45m
2026-05-04 EJA933 FMY → LAL May 4, 20:25 UTCMay 4, 21:10 UTC45m
2026-05-04 EJA933 FMY → LAL May 4, 18:00 UTCMay 4, 19:00 UTC1h 1m
2026-05-04 EJA933 FMY → LAL May 4, 13:15 UTCMay 4, 16:45 UTC3h 30m
2026-05-03 EJA933 FMY → LAL May 3, 22:05 UTCMay 3, 23:30 UTC1h 25m
2026-05-03 EJA933 FMY → LAL May 3, 20:00 UTCMay 3, 21:20 UTC1h 20m
2026-05-03 EJA933 FMY → LAL May 3, 16:50 UTCMay 3, 17:10 UTC20m
2026-05-03 EJA933 FMY → LAL May 3, 13:15 UTCMay 3, 16:00 UTC2h 45m
2026-05-02 EJA933 FMY → LAL May 2, 22:40 UTCMay 2, 23:15 UTC35m
2026-05-02 EJA933 FMY → LAL May 2, 20:45 UTCMay 2, 22:00 UTC1h 15m
2026-05-02 EJA933 FMY → LAL May 2, 15:20 UTCMay 2, 16:50 UTC1h 30m
2026-05-01 N933QS - May 1, 20:10 UTCMay 1, 20:35 UTC25m
2026-05-01 N933QS - May 1, 18:00 UTCMay 1, 18:20 UTC20m
2026-04-30 N933QS - Apr 30, 23:50 UTCMay 1, 00:05 UTC15m
2026-04-30 N933QS - Apr 30, 20:30 UTCApr 30, 22:10 UTC1h 40m
2026-04-30 EJA933 FMY → LAL Apr 30, 17:15 UTCApr 30, 18:35 UTC1h 20m
2026-04-30 EJA933 FMY → LAL Apr 30, 14:55 UTCApr 30, 16:25 UTC1h 30m
2026-04-29 EJA933 FMY → LAL Apr 29, 20:45 UTCApr 29, 22:05 UTC1h 20m
2026-04-29 EJA933 FMY → LAL Apr 29, 14:10 UTCApr 29, 14:45 UTC35m
2026-04-29 EJA933 FMY → LAL Apr 29, 11:55 UTCApr 29, 12:15 UTC20m
2026-04-28 EJA933 FMY → LAL Apr 28, 20:40 UTCApr 28, 23:05 UTC2h 25m
2026-04-28 EJA933 FMY → LAL Apr 28, 14:30 UTCApr 28, 16:20 UTC1h 50m
2026-04-27 EJA933 FMY → LAL Apr 27, 17:10 UTCApr 27, 21:00 UTC3h 50m
2026-04-26 EJA933 FMY → LAL Apr 26, 20:30 UTCApr 26, 21:25 UTC55m
2026-04-26 EJA933 FMY → LAL Apr 26, 18:15 UTCApr 26, 18:45 UTC30m
2026-04-26 EJA933 FMY → LAL Apr 26, 15:10 UTCApr 26, 16:45 UTC1h 35m
2026-04-25 EJA933 FMY → LAL Apr 25, 23:40 UTCApr 26, 00:50 UTC1h 10m
2026-04-25 EJA933 FMY → LAL Apr 25, 21:25 UTCApr 25, 21:50 UTC25m
2026-04-25 EJA933 FMY → LAL Apr 25, 17:15 UTCApr 25, 21:20 UTC4h 5m
2026-04-25 EJA933 FMY → LAL Apr 25, 00:05 UTCApr 25, 00:55 UTC50m
2026-04-24 EJA933 FMY → LAL Apr 24, 21:20 UTCApr 24, 23:20 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 N933QS page for operator, model, and routing details .

Mode-S ACF23D frequently asked

What is Mode-S code ACF23D?
ACF23D is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N933QS.
Where is Mode-S ACF23D registered?
Mode-S code ACF23D 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 ACF23D broadcasting right now?
No active broadcast right now. Last signal was 2d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex ACF23D, octal 53171075, decimal 11,334,205.
What flights does ACF23D operate?
Mode-S ACF23D has broadcast 2 distinct callsigns, including EJA933, N933QS.