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sensors Mode-S transponder

A7A133

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N591AW · BEECH 90 King Air · operated by CSI 135 DIVISION LLC

Hex
A7A133
Octal
51720463
Decimal
10,985,779
Country
US
Tail
N591AW
Type
BE9L
No current signal · last broadcast Jul 26, 10:40 UTC
Flights observed
189
Distinct callsigns
1
Country
US
Last broadcast
Jul 26, 10:40 UTC

Last known position

Most recent position reported by Mode-S A7A133.

Country allocation

The ICAO 24-bit address A7A133 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 1 distinct

Callsign Airline Flights Last seen
CSI591 - 189 2026-07-26

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 CSI591 - Jul 26, 10:25 UTCJul 26, 10:40 UTC15m
2026-07-26 CSI591 - Jul 26, 09:05 UTCJul 26, 09:20 UTC15m
2026-07-26 CSI591 - Jul 26, 05:25 UTCJul 26, 05:40 UTC15m
2026-07-26 CSI591 - Jul 26, 03:25 UTCJul 26, 03:40 UTC15m
2026-07-25 CSI591 - Jul 25, 01:30 UTCJul 25, 01:40 UTC10m
2026-07-24 CSI591 - Jul 24, 23:25 UTCJul 25, 00:10 UTC45m
2026-07-24 CSI591 - Jul 24, 20:40 UTCJul 24, 21:05 UTC25m
2026-07-23 CSI591 - Jul 23, 18:10 UTCJul 23, 20:25 UTC2h 15m
2026-07-22 CSI591 - Jul 22, 16:20 UTCJul 22, 18:30 UTC2h 10m
2026-07-20 CSI591 - Jul 20, 16:20 UTCJul 20, 18:30 UTC2h 10m
2026-07-20 CSI591 - Jul 20, 14:40 UTCJul 20, 15:15 UTC35m
2026-07-20 CSI591 - Jul 20, 10:00 UTCJul 20, 10:15 UTC15m
2026-07-17 CSI591 - Jul 17, 20:04 UTCJul 17, 20:40 UTC35m
2026-07-17 CSI591 - Jul 17, 16:00 UTCJul 17, 17:20 UTC1h 20m
2026-07-17 CSI591 - Jul 17, 13:00 UTCJul 17, 14:50 UTC1h 50m
2026-07-14 CSI591 - Jul 14, 10:10 UTCJul 14, 10:35 UTC25m
2026-07-14 CSI591 - Jul 14, 05:50 UTCJul 14, 07:15 UTC1h 25m
2026-07-14 CSI591 - Jul 14, 03:05 UTCJul 14, 04:25 UTC1h 20m
2026-07-14 CSI591 - Jul 14, 01:10 UTCJul 14, 01:20 UTC10m
2026-07-12 CSI591 - Jul 12, 06:15 UTCJul 12, 07:25 UTC1h 10m
2026-07-12 CSI591 - Jul 12, 04:05 UTCJul 12, 04:50 UTC45m
2026-07-12 CSI591 - Jul 12, 01:35 UTCJul 12, 02:40 UTC1h 5m
2026-07-08 CSI591 - Jul 8, 05:10 UTCJul 8, 05:40 UTC30m
2026-07-08 CSI591 - Jul 8, 02:30 UTCJul 8, 03:05 UTC35m
2026-07-07 CSI591 - Jul 7, 23:55 UTCJul 8, 01:00 UTC1h 5m
2026-07-05 CSI591 - Jul 5, 20:15 UTCJul 5, 20:45 UTC30m
2026-07-05 CSI591 - Jul 5, 12:30 UTCJul 5, 13:10 UTC40m
2026-07-05 CSI591 - Jul 5, 06:20 UTCJul 5, 06:50 UTC30m
2026-07-05 CSI591 - Jul 5, 03:40 UTCJul 5, 04:20 UTC40m
2026-07-05 CSI591 - Jul 5, 00:10 UTCJul 5, 00:45 UTC35m
2026-07-04 CSI591 - Jul 4, 05:45 UTCJul 4, 06:25 UTC40m
2026-07-04 CSI591 - Jul 4, 00:00 UTCJul 4, 00:40 UTC40m
2026-06-30 CSI591 - Jun 30, 23:45 UTCJul 1, 01:50 UTC2h 5m
2026-06-30 CSI591 - Jun 30, 09:40 UTCJun 30, 10:10 UTC30m
2026-06-30 CSI591 - Jun 30, 07:25 UTCJun 30, 07:50 UTC25m
2026-06-30 CSI591 - Jun 30, 04:50 UTCJun 30, 05:15 UTC25m
2026-06-30 CSI591 - Jun 30, 02:50 UTCJun 30, 03:15 UTC25m
2026-06-29 CSI591 - Jun 29, 11:10 UTCJun 29, 11:25 UTC15m
2026-06-29 CSI591 - Jun 29, 03:29 UTCJun 29, 04:00 UTC30m
2026-06-27 CSI591 - Jun 27, 15:00 UTCJun 27, 15:24 UTC25m
2026-06-27 CSI591 - Jun 27, 12:50 UTCJun 27, 13:20 UTC30m
2026-06-27 CSI591 - Jun 27, 09:34 UTCJun 27, 10:19 UTC45m
2026-06-27 CSI591 - Jun 27, 06:59 UTCJun 27, 07:39 UTC40m
2026-06-27 CSI591 - Jun 27, 04:09 UTCJun 27, 04:29 UTC20m
2026-06-27 CSI591 - Jun 27, 02:50 UTCJun 27, 03:04 UTC15m
2026-06-26 CSI591 - Jun 26, 23:09 UTCJun 26, 23:39 UTC30m
2026-06-26 CSI591 - Jun 26, 21:15 UTCJun 26, 21:24 UTC10m
2026-06-26 CSI591 - Jun 26, 18:20 UTCJun 26, 18:49 UTC30m
2026-06-26 CSI591 - Jun 26, 15:29 UTCJun 26, 16:00 UTC30m
2026-06-26 CSI591 - Jun 26, 13:04 UTCJun 26, 13:40 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 N591AW page for operator, model, and routing details .

Mode-S A7A133 frequently asked

What is Mode-S code A7A133?
A7A133 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N591AW.
Where is Mode-S A7A133 registered?
Mode-S code A7A133 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 A7A133 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 10:40 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A7A133, octal 51720463, decimal 10,985,779.
What flights does A7A133 operate?
Mode-S A7A133 has broadcast 1 distinct callsign, including CSI591.