Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

ACAA61

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N915MR · BEECH 90 King Air · operated by GUARDIAN FLIGHT LLC

Hex
ACAA61
Octal
53125141
Decimal
11,315,809
Country
US
Tail
N915MR
Type
BE9L
No current signal · last broadcast 2h ago
Flights observed
144
Distinct callsigns
1
Country
US
Last broadcast
2h ago

Last known position

Most recent position reported by Mode-S ACAA61.

Country allocation

The ICAO 24-bit address ACAA61 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
N915MR - 144 2026-07-15

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-15 N915MR - Jul 15, 00:25 UTCJul 15, 00:55 UTC30m
2026-07-14 N915MR - Jul 14, 19:45 UTCJul 14, 20:20 UTC35m
2026-07-11 N915MR - Jul 11, 06:50 UTCJul 11, 07:20 UTC30m
2026-07-11 N915MR - Jul 11, 04:35 UTCJul 11, 05:01 UTC25m
2026-07-11 N915MR - Jul 11, 01:10 UTCJul 11, 01:30 UTC20m
2026-07-10 N915MR - Jul 10, 22:30 UTCJul 10, 22:55 UTC25m
2026-07-10 N915MR - Jul 10, 05:10 UTCJul 10, 05:40 UTC30m
2026-07-10 N915MR - Jul 10, 01:55 UTCJul 10, 02:15 UTC20m
2026-07-09 N915MR - Jul 9, 21:35 UTCJul 9, 22:05 UTC30m
2026-07-09 N915MR - Jul 9, 19:00 UTCJul 9, 19:30 UTC30m
2026-07-09 N915MR - Jul 9, 05:50 UTCJul 9, 06:10 UTC20m
2026-07-09 N915MR - Jul 9, 03:55 UTCJul 9, 04:15 UTC20m
2026-07-08 N915MR - Jul 8, 00:15 UTCJul 8, 00:35 UTC20m
2026-07-06 N915MR - Jul 6, 19:45 UTCJul 6, 19:55 UTC10m
2026-07-04 N915MR - Jul 4, 04:30 UTCJul 4, 04:45 UTC15m
2026-07-03 N915MR - Jul 3, 21:40 UTCJul 3, 21:50 UTC10m
2026-07-03 N915MR - Jul 3, 19:45 UTCJul 3, 20:15 UTC30m
2026-07-03 N915MR - Jul 3, 18:25 UTCJul 3, 19:00 UTC35m
2026-07-03 N915MR - Jul 3, 15:05 UTCJul 3, 15:40 UTC35m
2026-07-02 N915MR - Jul 2, 22:30 UTCJul 2, 22:55 UTC25m
2026-07-02 N915MR - Jul 2, 08:15 UTCJul 2, 08:35 UTC20m
2026-07-02 N915MR - Jul 2, 05:30 UTCJul 2, 05:55 UTC25m
2026-07-02 N915MR - Jul 2, 01:50 UTCJul 2, 02:05 UTC15m
2026-07-01 N915MR - Jul 1, 18:45 UTCJul 1, 19:15 UTC30m
2026-07-01 N915MR - Jul 1, 16:00 UTCJul 1, 16:20 UTC20m
2026-06-30 N915MR - Jun 30, 22:35 UTCJun 30, 23:35 UTC1h 0m
2026-06-30 N915MR - Jun 30, 20:50 UTCJun 30, 21:40 UTC50m
2026-06-30 N915MR - Jun 30, 18:05 UTCJun 30, 18:50 UTC45m
2026-06-30 N915MR - Jun 30, 16:10 UTCJun 30, 16:50 UTC40m
2026-06-30 N915MR - Jun 30, 00:14 UTCJun 30, 01:00 UTC45m
2026-06-29 N915MR - Jun 29, 22:30 UTCJun 29, 23:09 UTC40m
2026-06-27 N915MR - Jun 27, 01:44 UTCJun 27, 02:09 UTC25m
2026-06-26 N915MR - Jun 26, 23:34 UTCJun 27, 00:29 UTC55m
2026-06-26 N915MR - Jun 26, 21:50 UTCJun 26, 22:40 UTC50m
2026-06-26 N915MR - Jun 26, 16:49 UTCJun 26, 17:15 UTC25m
2026-06-25 N915MR DVT → ABQ Jun 25, 04:40 UTCJun 25, 05:44 UTC1h 5m
2026-06-25 N915MR - Jun 25, 01:59 UTCJun 25, 02:25 UTC25m
2026-06-24 N915MR - Jun 24, 23:50 UTCJun 25, 00:09 UTC20m
2026-06-24 N915MR - Jun 24, 20:49 UTCJun 24, 21:09 UTC20m
2026-06-23 N915MR - Jun 23, 08:15 UTCJun 23, 08:35 UTC20m
2026-06-23 N915MR - Jun 23, 05:34 UTCJun 23, 05:54 UTC20m
2026-06-16 N915MR - Jun 16, 02:50 UTCJun 16, 03:20 UTC30m
2026-06-16 N915MR - Jun 16, 00:29 UTCJun 16, 00:50 UTC20m
2026-06-13 N915MR - Jun 13, 08:05 UTCJun 13, 08:45 UTC40m
2026-06-13 N915MR - Jun 13, 05:30 UTCJun 13, 05:45 UTC15m
2026-06-12 N915MR - Jun 12, 10:10 UTCJun 12, 10:50 UTC40m
2026-06-12 N915MR - Jun 12, 07:40 UTCJun 12, 08:10 UTC30m
2026-06-11 N915MR - Jun 11, 07:00 UTCJun 11, 07:35 UTC35m
2026-06-11 N915MR - Jun 11, 03:20 UTCJun 11, 03:35 UTC15m
2026-06-11 N915MR - Jun 11, 00:55 UTCJun 11, 01:05 UTC10m

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 N915MR page for operator, model, and routing details .

Mode-S ACAA61 frequently asked

What is Mode-S code ACAA61?
ACAA61 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N915MR.
Where is Mode-S ACAA61 registered?
Mode-S code ACAA61 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 ACAA61 broadcasting right now?
No active broadcast right now. Last signal was 2h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex ACAA61, octal 53125141, decimal 11,315,809.
What flights does ACAA61 operate?
Mode-S ACAA61 has broadcast 1 distinct callsign, including N915MR.