Apparatus

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sensors Mode-S transponder

AC3945

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N887QS · operated by TEXTRON AVIATION INC

Hex
AC3945
Octal
53034505
Decimal
11,286,853
Country
US
Tail
N887QS
Type
C700
No current signal · last broadcast 12h ago
Flights observed
236
Distinct callsigns
2
Country
US
Last broadcast
12h ago

Last known position

Most recent position reported by Mode-S AC3945.

Country allocation

The ICAO 24-bit address AC3945 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
EJA887 - 231 2026-07-13
N887QS - 5 2026-06-18

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-13 EJA887 - Jul 13, 22:45 UTCJul 13, 23:50 UTC1h 5m
2026-07-13 EJA887 - Jul 13, 20:45 UTCJul 13, 21:00 UTC15m
2026-07-13 EJA887 - Jul 13, 18:10 UTCJul 13, 20:00 UTC1h 50m
2026-07-13 EJA887 - Jul 13, 15:40 UTCJul 13, 16:35 UTC55m
2026-07-12 EJA887 - Jul 12, 23:15 UTCJul 13, 00:40 UTC1h 25m
2026-07-12 EJA887 - Jul 12, 20:05 UTCJul 12, 20:50 UTC45m
2026-07-12 EJA887 - Jul 12, 18:45 UTCJul 12, 19:40 UTC55m
2026-07-12 EJA887 - Jul 12, 16:05 UTCJul 12, 17:20 UTC1h 15m
2026-07-11 EJA887 LNK → CCR Jul 11, 21:10 UTCJul 12, 00:01 UTC2h 50m
2026-07-11 EJA887 APA → LNK Jul 11, 19:10 UTCJul 11, 20:05 UTC55m
2026-07-11 EJA887 - Jul 11, 15:00 UTCJul 11, 16:40 UTC1h 40m
2026-07-11 EJA887 - Jul 11, 02:05 UTCJul 11, 02:15 UTC10m
2026-07-11 EJA887 - Jul 11, 00:20 UTCJul 11, 01:05 UTC45m
2026-07-10 EJA887 - Jul 10, 19:10 UTCJul 10, 21:30 UTC2h 20m
2026-07-10 EJA887 - Jul 10, 15:25 UTCJul 10, 16:45 UTC1h 20m
2026-07-09 EJA887 - Jul 9, 17:10 UTCJul 9, 22:50 UTC5h 40m
2026-07-09 EJA887 PHL → HPN Jul 9, 15:00 UTCJul 9, 15:35 UTC35m
2026-07-09 EJA887 - Jul 9, 12:55 UTCJul 9, 14:00 UTC1h 5m
2026-07-08 EJA887 TCL → PWK Jul 8, 14:45 UTCJul 8, 19:10 UTC4h 25m
2026-07-07 EJA887 TCL → PWK Jul 7, 22:00 UTCJul 7, 23:20 UTC1h 20m
2026-07-07 EJA887 TCL → PWK Jul 7, 12:45 UTCJul 7, 17:00 UTC4h 15m
2026-07-07 EJA887 TCL → PWK Jul 7, 00:30 UTCJul 7, 04:05 UTC3h 35m
2026-07-06 EJA887 TCL → PWK Jul 6, 17:00 UTCJul 6, 18:55 UTC1h 55m
2026-07-06 EJA887 TCL → PWK Jul 6, 02:50 UTCJul 6, 03:20 UTC30m
2026-07-04 EJA887 TCL → PWK Jul 4, 21:50 UTCJul 4, 22:30 UTC40m
2026-07-04 EJA887 TCL → PWK Jul 4, 17:25 UTCJul 4, 18:00 UTC35m
2026-07-04 EJA887 TCL → PWK Jul 4, 15:10 UTCJul 4, 16:40 UTC1h 30m
2026-07-03 EJA887 TCL → PWK Jul 3, 22:15 UTCJul 3, 23:40 UTC1h 25m
2026-07-03 EJA887 TCL → PWK Jul 3, 17:15 UTCJul 3, 20:50 UTC3h 35m
2026-07-03 EJA887 TCL → PWK Jul 3, 15:20 UTCJul 3, 16:05 UTC45m
2026-07-02 EJA887 TCL → PWK Jul 2, 23:10 UTCJul 3, 04:35 UTC5h 25m
2026-07-02 EJA887 TCL → PWK Jul 2, 20:50 UTCJul 2, 21:30 UTC40m
2026-07-02 EJA887 TCL → PWK Jul 2, 16:30 UTCJul 2, 19:40 UTC3h 10m
2026-07-01 EJA887 TCL → PWK Jul 1, 20:25 UTCJul 1, 20:45 UTC20m
2026-07-01 EJA887 TCL → PWK Jul 1, 14:25 UTCJul 1, 18:30 UTC4h 5m
2026-07-01 EJA887 TCL → PWK Jul 1, 11:30 UTCJul 1, 12:25 UTC55m
2026-06-30 EJA887 TCL → PWK Jun 30, 22:25 UTCJun 30, 23:25 UTC1h 0m
2026-06-30 EJA887 TCL → PWK Jun 30, 18:55 UTCJun 30, 19:35 UTC40m
2026-06-30 EJA887 TCL → PWK Jun 30, 14:25 UTCJun 30, 16:45 UTC2h 20m
2026-06-30 EJA887 TCL → PWK Jun 30, 04:00 UTCJun 30, 04:10 UTC10m
2026-06-29 EJA887 TCL → PWK Jun 29, 22:19 UTCJun 30, 03:15 UTC4h 55m
2026-06-28 EJA887 TCL → PWK Jun 28, 23:44 UTCJun 29, 00:00 UTC15m
2026-06-28 EJA887 TCL → PWK Jun 28, 19:55 UTCJun 28, 20:25 UTC30m
2026-06-28 EJA887 TCL → PWK Jun 28, 18:00 UTCJun 28, 18:34 UTC35m
2026-06-28 EJA887 TCL → PWK Jun 28, 16:29 UTCJun 28, 16:39 UTC10m
2026-06-27 EJA887 TCL → PWK Jun 27, 19:39 UTCJun 27, 19:49 UTC10m
2026-06-27 EJA887 TCL → PWK Jun 27, 15:30 UTCJun 27, 18:45 UTC3h 15m
2026-06-26 EJA887 TCL → PWK Jun 26, 19:50 UTCJun 26, 21:24 UTC1h 35m
2026-06-26 EJA887 TCL → PWK Jun 26, 17:29 UTCJun 26, 19:09 UTC1h 40m
2026-06-26 EJA887 TCL → PWK Jun 26, 15:29 UTCJun 26, 16:05 UTC35m

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 N887QS page for operator, model, and routing details .

Mode-S AC3945 frequently asked

What is Mode-S code AC3945?
AC3945 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N887QS.
Where is Mode-S AC3945 registered?
Mode-S code AC3945 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 AC3945 broadcasting right now?
No active broadcast right now. Last signal was 12h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AC3945, octal 53034505, decimal 11,286,853.
What flights does AC3945 operate?
Mode-S AC3945 has broadcast 2 distinct callsigns, including EJA887, N887QS.