Apparatus

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sensors Mode-S transponder

AC40B3

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N889QS · operated by TEXTRON AVIATION INC

Hex
AC40B3
Octal
53040263
Decimal
11,288,755
Country
US
Tail
N889QS
Type
C700
No current signal · last broadcast 3h ago
Flights observed
191
Distinct callsigns
2
Country
US
Last broadcast
3h ago

Last known position

Most recent position reported by Mode-S AC40B3.

Country allocation

The ICAO 24-bit address AC40B3 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
EJA889 - 182 2026-07-18
N889QS - 9 2026-06-27

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-18 EJA889 - Jul 18, 02:19 UTCJul 18, 03:15 UTC56m
2026-07-18 EJA889 - Jul 18, 01:00 UTCJul 18, 01:25 UTC25m
2026-07-17 EJA889 - Jul 17, 21:00 UTCJul 17, 21:15 UTC15m
2026-07-17 EJA889 - Jul 17, 01:29 UTCJul 17, 06:35 UTC5h 5m
2026-07-16 EJA889 VNY → SFO Jul 16, 23:10 UTCJul 16, 23:59 UTC50m
2026-07-16 EJA889 - Jul 16, 19:40 UTCJul 16, 21:05 UTC1h 25m
2026-07-16 EJA889 - Jul 16, 14:35 UTCJul 16, 17:40 UTC3h 5m
2026-07-15 EJA889 - Jul 15, 23:20 UTCJul 16, 00:25 UTC1h 5m
2026-07-15 EJA889 - Jul 15, 21:00 UTCJul 15, 22:10 UTC1h 10m
2026-07-15 EJA889 ATL → IAD Jul 15, 18:15 UTCJul 15, 19:30 UTC1h 15m
2026-07-15 EJA889 - Jul 15, 15:50 UTCJul 15, 17:05 UTC1h 15m
2026-07-15 EJA889 - Jul 15, 02:30 UTCJul 15, 05:10 UTC2h 40m
2026-07-13 EJA889 - Jul 13, 13:00 UTCJul 13, 14:15 UTC1h 15m
2026-07-12 EJA889 - Jul 12, 22:15 UTCJul 13, 00:05 UTC1h 50m
2026-07-12 EJA889 - Jul 12, 18:10 UTCJul 12, 18:35 UTC25m
2026-07-12 EJA889 - Jul 12, 15:05 UTCJul 12, 16:20 UTC1h 15m
2026-07-11 EJA889 - Jul 11, 22:15 UTCJul 12, 00:01 UTC1h 45m
2026-07-01 EJA889 - Jul 1, 20:15 UTCJul 1, 22:50 UTC2h 35m
2026-07-01 EJA889 - Jul 1, 16:35 UTCJul 1, 18:35 UTC2h 0m
2026-06-30 EJA889 - Jun 30, 23:50 UTCJul 1, 01:25 UTC1h 35m
2026-06-30 EJA889 - Jun 30, 21:30 UTCJun 30, 23:05 UTC1h 35m
2026-06-30 EJA889 - Jun 30, 20:15 UTCJun 30, 20:40 UTC25m
2026-06-30 EJA889 - Jun 30, 17:10 UTCJun 30, 19:30 UTC2h 20m
2026-06-30 EJA889 - Jun 30, 01:45 UTCJun 30, 02:35 UTC50m
2026-06-30 EJA889 - Jun 30, 00:00 UTCJun 30, 00:49 UTC50m
2026-06-29 EJA889 - Jun 29, 18:25 UTCJun 29, 21:09 UTC2h 45m
2026-06-29 EJA889 DEN → OKC Jun 29, 16:10 UTCJun 29, 17:14 UTC1h 5m
2026-06-27 N889QS - Jun 27, 15:39 UTCJun 27, 22:55 UTC7h 15m
2026-06-27 EJA889 - Jun 27, 13:30 UTCJun 27, 14:00 UTC30m
2026-06-26 EJA889 - Jun 26, 19:24 UTCJun 26, 20:59 UTC1h 35m
2026-06-26 EJA889 - Jun 26, 17:29 UTCJun 26, 18:20 UTC50m
2026-06-26 EJA889 - Jun 26, 15:15 UTCJun 26, 15:45 UTC30m
2026-06-26 EJA889 - Jun 26, 13:24 UTCJun 26, 14:05 UTC40m
2026-06-25 EJA889 - Jun 25, 20:30 UTCJun 25, 20:45 UTC15m
2026-06-25 EJA889 - Jun 25, 17:05 UTCJun 25, 19:54 UTC2h 50m
2026-06-25 EJA889 - Jun 25, 14:20 UTCJun 25, 15:29 UTC1h 10m
2026-06-24 EJA889 - Jun 24, 18:55 UTCJun 24, 21:50 UTC2h 55m
2026-06-24 EJA889 - Jun 24, 17:45 UTCJun 24, 17:55 UTC10m
2026-06-24 EJA889 - Jun 24, 15:09 UTCJun 24, 16:45 UTC1h 35m
2026-06-24 EJA889 LUK → BNA Jun 24, 13:14 UTCJun 24, 14:04 UTC50m
2026-06-23 EJA889 - Jun 23, 20:49 UTCJun 23, 21:24 UTC35m
2026-06-23 EJA889 - Jun 23, 18:14 UTCJun 23, 19:50 UTC1h 35m
2026-06-23 EJA889 - Jun 23, 12:20 UTCJun 23, 13:24 UTC1h 5m
2026-06-23 EJA889 - Jun 23, 10:29 UTCJun 23, 10:55 UTC25m
2026-06-23 EJA889 - Jun 23, 04:19 UTCJun 23, 04:45 UTC25m
2026-06-23 EJA889 - Jun 23, 02:45 UTCJun 23, 03:39 UTC55m
2026-06-23 EJA889 - Jun 23, 00:09 UTCJun 23, 01:15 UTC1h 5m
2026-06-22 EJA889 IAD → BED Jun 22, 20:34 UTCJun 22, 21:59 UTC1h 25m
2026-06-22 EJA889 LCI → IAD Jun 22, 03:45 UTCJun 22, 04:54 UTC1h 10m
2026-06-22 EJA889 - Jun 22, 02:19 UTCJun 22, 02:59 UTC40m

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 N889QS page for operator, model, and routing details .

Mode-S AC40B3 frequently asked

What is Mode-S code AC40B3?
AC40B3 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N889QS.
Where is Mode-S AC40B3 registered?
Mode-S code AC40B3 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 AC40B3 broadcasting right now?
No active broadcast right now. Last signal was 3h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AC40B3, octal 53040263, decimal 11,288,755.
What flights does AC40B3 operate?
Mode-S AC40B3 has broadcast 2 distinct callsigns, including EJA889, N889QS.