Apparatus

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sensors Mode-S transponder

AC559F

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N894QS · operated by TEXTRON AVIATION INC

Hex
AC559F
Octal
53052637
Decimal
11,294,111
Country
US
Tail
N894QS
Type
C700
No current signal · last broadcast 2d ago
Flights observed
109
Distinct callsigns
2
Country
US
Last broadcast
2d ago

Last known position

Most recent position reported by Mode-S AC559F.

Country allocation

The ICAO 24-bit address AC559F 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
EJA894 NetJets 105 2026-05-27
N894QS - 4 2026-05-21

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-27 EJA894 ADS → RAP May 27, 20:35 UTCMay 27, 21:20 UTC45m
2026-05-22 EJA894 ADS → RAP May 22, 19:45 UTCMay 22, 20:45 UTC1h 0m
2026-05-22 EJA894 ADS → RAP May 22, 17:40 UTCMay 22, 18:05 UTC25m
2026-05-22 EJA894 ADS → RAP May 22, 16:15 UTCMay 22, 17:00 UTC45m
2026-05-22 EJA894 ADS → RAP May 22, 13:45 UTCMay 22, 14:40 UTC55m
2026-05-22 EJA894 ADS → RAP May 22, 10:45 UTCMay 22, 12:45 UTC2h 0m
2026-05-21 EJA894 ADS → RAP May 21, 21:30 UTCMay 22, 01:10 UTC3h 40m
2026-05-21 EJA894 ADS → RAP May 21, 17:55 UTCMay 21, 19:00 UTC1h 5m
2026-05-21 EJA894 ADS → RAP May 21, 15:15 UTCMay 21, 17:00 UTC1h 45m
2026-05-21 N894QS - May 21, 00:55 UTCMay 21, 02:35 UTC1h 40m
2026-05-20 N894QS - May 20, 17:45 UTCMay 20, 21:45 UTC4h 0m
2026-05-20 EJA894 ADS → RAP May 20, 15:50 UTCMay 20, 16:00 UTC10m
2026-05-19 EJA894 ADS → RAP May 19, 22:35 UTCMay 20, 03:10 UTC4h 35m
2026-05-17 EJA894 ADS → RAP May 17, 17:15 UTCMay 17, 18:15 UTC1h 0m
2026-05-16 EJA894 ADS → RAP May 16, 23:15 UTCMay 17, 00:10 UTC55m
2026-05-16 EJA894 ADS → RAP May 16, 21:45 UTCMay 16, 22:30 UTC45m
2026-05-16 EJA894 ADS → RAP May 16, 01:00 UTCMay 16, 01:30 UTC30m
2026-05-15 EJA894 ADS → RAP May 15, 21:10 UTCMay 15, 21:30 UTC20m
2026-05-15 EJA894 ADS → RAP May 15, 18:45 UTCMay 15, 19:40 UTC55m
2026-05-15 EJA894 ADS → RAP May 15, 16:35 UTCMay 15, 17:10 UTC35m
2026-05-15 EJA894 ADS → RAP May 15, 03:30 UTCMay 15, 04:10 UTC40m
2026-05-15 EJA894 ADS → RAP May 15, 00:45 UTCMay 15, 01:50 UTC1h 5m
2026-05-14 EJA894 ADS → RAP May 14, 18:40 UTCMay 14, 23:20 UTC4h 40m
2026-05-14 EJA894 ADS → RAP May 14, 08:35 UTCMay 14, 09:15 UTC40m
2026-05-14 EJA894 ADS → RAP May 14, 01:50 UTCMay 14, 02:40 UTC50m
2026-05-13 EJA894 ADS → RAP May 13, 16:40 UTCMay 13, 21:20 UTC4h 40m
2026-05-12 EJA894 ADS → RAP May 12, 16:50 UTCMay 12, 22:05 UTC5h 15m
2026-05-12 EJA894 ADS → RAP May 12, 11:00 UTCMay 12, 12:25 UTC1h 25m
2026-05-10 EJA894 ADS → RAP May 10, 16:44 UTCMay 10, 17:30 UTC45m
2026-05-09 EJA894 ADS → RAP May 9, 20:05 UTCMay 9, 22:25 UTC2h 20m
2026-05-09 EJA894 ADS → RAP May 9, 16:50 UTCMay 9, 17:25 UTC35m
2026-05-09 EJA894 ADS → RAP May 9, 13:45 UTCMay 9, 15:20 UTC1h 35m
2026-05-08 EJA894 ADS → RAP May 8, 21:25 UTCMay 8, 23:45 UTC2h 20m
2026-05-08 EJA894 ADS → RAP May 8, 19:30 UTCMay 8, 19:50 UTC20m
2026-05-08 EJA894 ADS → RAP May 8, 17:25 UTCMay 8, 18:35 UTC1h 10m
2026-05-08 EJA894 ADS → RAP May 8, 14:00 UTCMay 8, 15:10 UTC1h 10m
2026-05-08 EJA894 ADS → RAP May 8, 12:39 UTCMay 8, 13:15 UTC35m
2026-05-07 EJA894 ADS → RAP May 7, 21:20 UTCMay 7, 22:30 UTC1h 10m
2026-05-07 EJA894 ADS → RAP May 7, 16:20 UTCMay 7, 18:00 UTC1h 40m
2026-05-07 EJA894 ADS → RAP May 7, 14:00 UTCMay 7, 14:50 UTC50m
2026-05-06 EJA894 ADS → RAP May 6, 22:00 UTCMay 6, 22:40 UTC40m
2026-05-06 EJA894 ADS → RAP May 6, 17:25 UTCMay 6, 19:30 UTC2h 4m
2026-05-06 EJA894 ADS → RAP May 6, 15:25 UTCMay 6, 15:50 UTC25m
2026-05-06 EJA894 ADS → RAP May 6, 11:05 UTCMay 6, 13:30 UTC2h 25m
2026-05-05 EJA894 ADS → RAP May 5, 20:35 UTCMay 5, 21:25 UTC50m
2026-05-05 EJA894 ADS → RAP May 5, 17:20 UTCMay 5, 19:50 UTC2h 30m
2026-05-05 EJA894 ADS → RAP May 5, 13:10 UTCMay 5, 15:20 UTC2h 10m
2026-05-04 EJA894 ADS → RAP May 4, 15:30 UTCMay 4, 18:25 UTC2h 55m
2026-05-04 EJA894 ADS → RAP May 4, 10:15 UTCMay 4, 13:50 UTC3h 35m
2026-05-03 EJA894 ADS → RAP May 3, 20:35 UTCMay 3, 22:20 UTC1h 45m

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 N894QS page for operator, model, and routing details .

Mode-S AC559F frequently asked

What is Mode-S code AC559F?
AC559F is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N894QS.
Where is Mode-S AC559F registered?
Mode-S code AC559F 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 AC559F 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 AC559F, octal 53052637, decimal 11,294,111.
What flights does AC559F operate?
Mode-S AC559F has broadcast 2 distinct callsigns, including EJA894, N894QS.