Apparatus

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sensors Mode-S transponder

A1EC59

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N223CA · BEECH 99 Airliner · operated by BEMIDJI AVIATION SERVICES INC

Hex
A1EC59
Octal
50366131
Decimal
10,611,801
Country
US
Tail
N223CA
Type
BE99
No current signal · last broadcast 3d ago
Flights observed
58
Distinct callsigns
3
Country
US
Last broadcast
3d ago

Last known position

Most recent position reported by Mode-S A1EC59.

Country allocation

The ICAO 24-bit address A1EC59 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 3 distinct

Callsign Airline Flights Last seen
BMJ1702 Bemidji Airlines 30 2026-05-29
BMJ1701 Bemidji Airlines 18 2026-05-30
BMJ1694 Bemidji Airlines 10 2026-05-30

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-30 BMJ1694 SNY → DEN May 30, 20:35 UTCMay 30, 21:10 UTC35m
2026-05-30 BMJ1694 SNY → DEN May 30, 13:30 UTCMay 30, 13:50 UTC20m
2026-05-30 BMJ1701 DEN → ALS May 30, 02:06 UTCMay 30, 02:30 UTC24m
2026-05-29 BMJ1702 DEN → GUC May 29, 14:15 UTCMay 29, 14:45 UTC30m
2026-05-29 BMJ1702 DEN → GUC May 29, 12:50 UTCMay 29, 13:20 UTC30m
2026-05-28 BMJ1702 DEN → GUC May 28, 01:45 UTCMay 28, 02:25 UTC40m
2026-05-27 BMJ1702 DEN → GUC May 27, 14:35 UTCMay 27, 15:05 UTC30m
2026-05-27 BMJ1702 DEN → GUC May 27, 13:05 UTCMay 27, 13:40 UTC35m
2026-05-23 BMJ1701 DEN → ALS May 23, 01:45 UTCMay 23, 02:25 UTC40m
2026-05-22 BMJ1702 DEN → GUC May 22, 14:35 UTCMay 22, 15:00 UTC25m
2026-05-22 BMJ1702 DEN → GUC May 22, 13:10 UTCMay 22, 13:45 UTC35m
2026-05-21 BMJ1701 DEN → ALS May 21, 02:00 UTCMay 21, 02:35 UTC35m
2026-05-20 BMJ1702 DEN → GUC May 20, 14:25 UTCMay 20, 14:55 UTC30m
2026-05-20 BMJ1702 DEN → GUC May 20, 12:50 UTCMay 20, 13:25 UTC35m
2026-05-19 BMJ1701 DEN → ALS May 19, 01:05 UTCMay 19, 02:20 UTC1h 15m
2026-05-18 BMJ1701 DEN → ALS May 18, 23:20 UTCMay 19, 00:05 UTC45m
2026-05-16 BMJ1694 SNY → DEN May 16, 21:30 UTCMay 16, 22:10 UTC40m
2026-05-16 BMJ1694 SNY → DEN May 16, 12:55 UTCMay 16, 13:15 UTC20m
2026-05-15 BMJ1701 DEN → ALS May 15, 01:50 UTCMay 15, 02:30 UTC40m
2026-05-14 BMJ1702 DEN → GUC May 14, 14:35 UTCMay 14, 15:01 UTC25m
2026-05-14 BMJ1702 DEN → GUC May 14, 13:15 UTCMay 14, 13:50 UTC35m
2026-05-13 BMJ1701 DEN → ALS May 13, 01:50 UTCMay 13, 02:25 UTC35m
2026-05-13 BMJ1702 DEN → GUC May 13, 00:35 UTCMay 13, 01:00 UTC25m
2026-05-12 BMJ1702 DEN → GUC May 12, 13:05 UTCMay 12, 13:35 UTC30m
2026-05-08 BMJ1701 DEN → ALS May 8, 01:59 UTCMay 8, 02:29 UTC30m
2026-05-07 BMJ1702 DEN → GUC May 7, 14:40 UTCMay 7, 15:05 UTC25m
2026-05-07 BMJ1702 DEN → GUC May 7, 13:20 UTCMay 7, 13:50 UTC30m
2026-05-06 BMJ1702 DEN → GUC May 6, 15:15 UTCMay 6, 15:45 UTC30m
2026-05-06 BMJ1702 DEN → GUC May 6, 13:45 UTCMay 6, 14:15 UTC30m
2026-05-05 BMJ1701 DEN → ALS May 5, 02:01 UTCMay 5, 02:40 UTC40m
2026-05-05 BMJ1701 DEN → ALS May 5, 01:10 UTCMay 5, 01:25 UTC15m
2026-05-04 BMJ1701 DEN → ALS May 4, 23:05 UTCMay 4, 23:45 UTC40m
2026-05-02 BMJ1694 SNY → DEN May 2, 19:30 UTCMay 2, 19:55 UTC25m
2026-05-02 BMJ1694 SNY → DEN May 2, 13:10 UTCMay 2, 13:30 UTC20m
2026-05-01 BMJ1701 DEN → ALS May 1, 02:15 UTCMay 1, 02:50 UTC35m
2026-04-30 BMJ1702 DEN → GUC Apr 30, 14:55 UTCApr 30, 15:25 UTC30m
2026-04-30 BMJ1702 DEN → GUC Apr 30, 13:35 UTCApr 30, 14:05 UTC30m
2026-04-29 BMJ1701 DEN → ALS Apr 29, 01:54 UTCApr 29, 02:20 UTC25m
2026-04-28 BMJ1702 DEN → GUC Apr 28, 15:20 UTCApr 28, 15:40 UTC20m
2026-04-28 BMJ1702 DEN → GUC Apr 28, 13:45 UTCApr 28, 14:15 UTC30m
2026-04-25 BMJ1694 SNY → DEN Apr 25, 22:05 UTCApr 25, 22:35 UTC30m
2026-04-25 BMJ1694 SNY → DEN Apr 25, 13:15 UTCApr 25, 13:35 UTC20m
2026-04-24 BMJ1701 DEN → ALS Apr 24, 01:50 UTCApr 24, 02:25 UTC35m
2026-04-23 BMJ1702 DEN → GUC Apr 23, 14:35 UTCApr 23, 15:00 UTC25m
2026-04-23 BMJ1702 DEN → GUC Apr 23, 13:15 UTCApr 23, 13:55 UTC40m
2026-04-22 BMJ1701 DEN → ALS Apr 22, 01:45 UTCApr 22, 02:20 UTC35m
2026-04-21 BMJ1702 DEN → GUC Apr 21, 15:20 UTCApr 21, 15:51 UTC30m
2026-04-21 BMJ1702 DEN → GUC Apr 21, 13:20 UTCApr 21, 13:45 UTC25m
2026-04-18 BMJ1694 SNY → DEN Apr 18, 20:25 UTCApr 18, 20:55 UTC30m
2026-04-18 BMJ1694 SNY → DEN Apr 18, 13:20 UTCApr 18, 13:40 UTC20m

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 N223CA page for operator, model, and routing details .

Mode-S A1EC59 frequently asked

What is Mode-S code A1EC59?
A1EC59 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N223CA.
Where is Mode-S A1EC59 registered?
Mode-S code A1EC59 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 A1EC59 broadcasting right now?
No active broadcast right now. Last signal was 3d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A1EC59, octal 50366131, decimal 10,611,801.
What flights does A1EC59 operate?
Mode-S A1EC59 has broadcast 3 distinct callsigns, including BMJ1702, BMJ1701, BMJ1694.