Apparatus

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sensors Mode-S transponder

A145DA

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N181R · BELL 505 JetRanger X · operated by N181R LLC

Hex
A145DA
Octal
50242732
Decimal
10,569,178
Country
US
Tail
N181R
Type
B505
No current signal · last broadcast 27d ago
Flights observed
95
Distinct callsigns
1
Country
US
Last broadcast
27d ago

Last known position

Most recent position reported by Mode-S A145DA.

Country allocation

The ICAO 24-bit address A145DA 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
N181R - 95 2026-06-23

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-06-23 N181R MRI → HOM Jun 23, 18:29 UTCJun 23, 19:39 UTC1h 10m
2026-06-23 N181R - Jun 23, 17:25 UTCJun 23, 18:10 UTC45m
2026-06-22 N181R - Jun 22, 23:14 UTCJun 23, 00:04 UTC50m
2026-06-20 N181R - Jun 20, 18:29 UTCJun 20, 18:40 UTC10m
2026-06-19 N181R - Jun 19, 17:29 UTCJun 19, 17:44 UTC15m
2026-06-19 N181R - Jun 19, 16:59 UTCJun 19, 17:14 UTC15m
2026-06-17 N181R - Jun 17, 18:55 UTCJun 17, 19:10 UTC15m
2026-06-16 N181R - Jun 16, 19:05 UTCJun 16, 19:19 UTC15m
2026-06-16 N181R - Jun 16, 02:04 UTCJun 16, 02:40 UTC35m
2026-06-15 N181R - Jun 15, 21:14 UTCJun 15, 21:50 UTC35m
2026-06-15 N181R - Jun 15, 19:10 UTCJun 15, 20:15 UTC1h 5m
2026-06-10 N181R - Jun 10, 15:45 UTCJun 10, 16:10 UTC25m
2026-06-09 N181R - Jun 9, 22:55 UTCJun 10, 00:05 UTC1h 10m
2026-06-09 N181R - Jun 9, 21:00 UTCJun 9, 21:50 UTC50m
2026-06-08 N181R - Jun 8, 21:05 UTCJun 8, 21:50 UTC45m
2026-06-08 N181R - Jun 8, 16:20 UTCJun 8, 16:45 UTC25m
2026-06-07 N181R - Jun 7, 20:00 UTCJun 7, 21:35 UTC1h 35m
2026-06-07 N181R - Jun 7, 00:55 UTCJun 7, 01:35 UTC40m
2026-06-06 N181R - Jun 6, 23:44 UTCJun 7, 00:19 UTC35m
2026-06-06 N181R - Jun 6, 19:24 UTCJun 6, 20:45 UTC1h 20m
2026-06-06 N181R - Jun 6, 04:25 UTCJun 6, 04:35 UTC10m
2026-06-06 N181R - Jun 6, 00:55 UTCJun 6, 01:10 UTC15m
2026-06-05 N181R - Jun 5, 22:00 UTCJun 5, 22:45 UTC45m
2026-06-05 N181R - Jun 5, 19:15 UTCJun 5, 19:45 UTC30m
2026-06-05 N181R - Jun 5, 17:05 UTCJun 5, 17:55 UTC50m
2026-06-05 N181R - Jun 5, 15:50 UTCJun 5, 16:25 UTC35m
2026-06-05 N181R - Jun 5, 01:30 UTCJun 5, 02:20 UTC50m
2026-06-05 N181R - Jun 5, 00:05 UTCJun 5, 00:25 UTC20m
2026-06-04 N181R - Jun 4, 21:20 UTCJun 4, 21:30 UTC10m
2026-06-04 N181R - Jun 4, 01:10 UTCJun 4, 01:30 UTC20m
2026-06-03 N181R - Jun 3, 23:05 UTCJun 3, 23:15 UTC10m
2026-06-03 N181R - Jun 3, 21:15 UTCJun 3, 22:50 UTC1h 35m
2026-06-03 N181R - Jun 3, 01:40 UTCJun 3, 02:25 UTC45m
2026-06-02 N181R - Jun 2, 23:30 UTCJun 2, 23:35 UTC5m
2026-06-02 N181R - Jun 2, 21:05 UTCJun 2, 21:15 UTC10m
2026-06-02 N181R - Jun 2, 18:15 UTCJun 2, 19:10 UTC55m
2026-06-02 N181R - Jun 2, 17:35 UTCJun 2, 17:45 UTC10m
2026-06-01 N181R - Jun 1, 22:45 UTCJun 1, 23:00 UTC15m
2026-05-31 N181R HOM → TKA May 31, 21:45 UTCJun 1, 00:05 UTC2h 20m
2026-05-31 N181R - May 31, 20:45 UTCMay 31, 21:25 UTC40m
2026-05-31 N181R - May 31, 19:25 UTCMay 31, 20:05 UTC40m
2026-05-29 N181R - May 29, 20:30 UTCMay 29, 21:00 UTC30m
2026-05-28 N181R - May 28, 23:20 UTCMay 29, 00:00 UTC40m
2026-05-28 N181R - May 28, 20:50 UTCMay 28, 21:40 UTC50m
2026-05-27 N181R - May 27, 01:14 UTCMay 27, 01:59 UTC45m
2026-05-26 N181R - May 26, 22:44 UTCMay 26, 23:39 UTC55m
2026-05-26 N181R - May 26, 19:40 UTCMay 26, 21:20 UTC1h 40m
2026-05-26 N181R VDZ → VDZ May 26, 18:45 UTCMay 26, 18:55 UTC10m
2026-05-25 N181R - May 25, 21:54 UTCMay 25, 22:05 UTC10m
2026-05-25 N181R VDZ → VDZ May 25, 18:30 UTCMay 25, 19:30 UTC1h 0m

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 N181R page for operator, model, and routing details .

Mode-S A145DA frequently asked

What is Mode-S code A145DA?
A145DA is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N181R.
Where is Mode-S A145DA registered?
Mode-S code A145DA 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 A145DA broadcasting right now?
No active broadcast right now. Last signal was 27d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A145DA, octal 50242732, decimal 10,569,178.
What flights does A145DA operate?
Mode-S A145DA has broadcast 1 distinct callsign, including N181R.