Apparatus

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sensors Mode-S transponder

ACA35D

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N913RX · BEECH 200 Super King Air · operated by REACH AIR MEDICAL SERVICES LLC

Hex
ACA35D
Octal
53121535
Decimal
11,314,013
Country
US
Tail
N913RX
Type
BE20
No current signal · last broadcast 4h ago
Flights observed
249
Distinct callsigns
4
Country
US
Last broadcast
4h ago

Last known position

Most recent position reported by Mode-S ACA35D.

Country allocation

The ICAO 24-bit address ACA35D 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 4 distinct

Callsign Airline Flights Last seen
CMD70 - 180 2026-07-09
REH50 - 38 2026-07-20
REH050 - 27 2026-04-25
N913RX - 4 2026-05-08

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-20 REH50 - Jul 20, 14:40 UTCJul 20, 15:25 UTC45m
2026-07-20 REH50 - Jul 20, 11:45 UTCJul 20, 12:40 UTC55m
2026-07-20 REH50 - Jul 20, 09:45 UTCJul 20, 09:55 UTC10m
2026-07-19 REH50 - Jul 19, 11:25 UTCJul 19, 12:10 UTC45m
2026-07-19 REH50 RDD → SFO Jul 19, 08:25 UTCJul 19, 09:25 UTC1h 0m
2026-07-18 REH50 - Jul 18, 07:20 UTCJul 18, 08:05 UTC45m
2026-07-18 REH50 - Jul 18, 04:00 UTCJul 18, 04:55 UTC55m
2026-07-17 REH50 PDX → RDD Jul 17, 11:55 UTCJul 17, 13:25 UTC1h 30m
2026-07-17 REH50 - Jul 17, 08:54 UTCJul 17, 09:45 UTC50m
2026-07-17 REH50 - Jul 17, 06:54 UTCJul 17, 07:25 UTC30m
2026-07-16 REH50 - Jul 16, 12:09 UTCJul 16, 12:49 UTC40m
2026-07-16 REH50 - Jul 16, 10:45 UTCJul 16, 10:55 UTC10m
2026-07-16 REH50 - Jul 16, 09:10 UTCJul 16, 09:25 UTC15m
2026-07-16 REH50 MCC → RDD Jul 16, 05:55 UTCJul 16, 06:30 UTC35m
2026-07-16 REH50 - Jul 16, 03:25 UTCJul 16, 04:05 UTC40m
2026-07-16 REH50 - Jul 16, 01:00 UTCJul 16, 01:15 UTC15m
2026-07-14 REH50 SJC → RDD Jul 14, 15:00 UTCJul 14, 15:50 UTC50m
2026-07-14 REH50 APC → SJC Jul 14, 14:05 UTCJul 14, 14:35 UTC30m
2026-07-14 REH50 - Jul 14, 10:45 UTCJul 14, 11:15 UTC30m
2026-07-14 REH50 - Jul 14, 06:15 UTCJul 14, 06:55 UTC40m
2026-07-14 REH50 - Jul 14, 04:10 UTCJul 14, 05:05 UTC55m
2026-07-12 REH50 - Jul 12, 16:25 UTCJul 12, 17:01 UTC35m
2026-07-12 REH50 - Jul 12, 13:45 UTCJul 12, 14:25 UTC40m
2026-07-12 REH50 - Jul 12, 12:35 UTCJul 12, 12:55 UTC20m
2026-07-12 REH50 - Jul 12, 03:05 UTCJul 12, 03:50 UTC45m
2026-07-11 REH50 - Jul 11, 22:45 UTCJul 11, 23:45 UTC1h 0m
2026-07-10 REH50 - Jul 10, 23:20 UTCJul 11, 00:10 UTC50m
2026-07-10 REH50 - Jul 10, 19:50 UTCJul 10, 20:45 UTC55m
2026-07-10 REH50 - Jul 10, 06:35 UTCJul 10, 07:25 UTC50m
2026-07-10 REH50 - Jul 10, 03:35 UTCJul 10, 04:30 UTC55m
2026-07-09 CMD70 MCC → RDD Jul 9, 15:45 UTCJul 9, 16:20 UTC35m
2026-07-09 CMD70 - Jul 9, 11:00 UTCJul 9, 11:25 UTC25m
2026-07-09 CMD70 - Jul 9, 07:50 UTCJul 9, 08:55 UTC1h 5m
2026-07-09 CMD70 - Jul 9, 05:55 UTCJul 9, 06:45 UTC50m
2026-07-09 CMD70 - Jul 9, 01:30 UTCJul 9, 02:05 UTC35m
2026-07-09 CMD70 - Jul 9, 00:05 UTCJul 9, 00:45 UTC40m
2026-07-08 CMD70 OAK → MCC Jul 8, 16:15 UTCJul 8, 16:40 UTC25m
2026-07-08 CMD70 - Jul 8, 14:05 UTCJul 8, 14:45 UTC40m
2026-07-08 CMD70 - Jul 8, 10:45 UTCJul 8, 11:35 UTC50m
2026-07-08 CMD70 RDD → SFO Jul 8, 08:05 UTCJul 8, 09:00 UTC55m
2026-07-08 CMD70 MCC → RDD Jul 8, 06:20 UTCJul 8, 06:55 UTC35m
2026-07-07 CMD70 - Jul 7, 12:10 UTCJul 7, 12:45 UTC35m
2026-07-07 CMD70 MCC → RDD Jul 7, 05:45 UTCJul 7, 06:20 UTC35m
2026-07-06 CMD70 NUQ → MCC Jul 6, 08:55 UTCJul 6, 09:20 UTC25m
2026-07-06 CMD70 RDD → NUQ Jul 6, 06:25 UTCJul 6, 07:30 UTC1h 5m
2026-07-06 CMD70 MCC → RDD Jul 6, 04:20 UTCJul 6, 04:50 UTC30m
2026-07-05 CMD70 - Jul 5, 16:35 UTCJul 5, 17:05 UTC30m
2026-07-05 REH50 - Jul 5, 14:45 UTCJul 5, 15:20 UTC35m
2026-07-05 REH50 - Jul 5, 13:30 UTCJul 5, 14:05 UTC35m
2026-07-04 REH50 OAK → RDD Jul 4, 10:30 UTCJul 4, 11:15 UTC45m

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 N913RX page for operator, model, and routing details .

Mode-S ACA35D frequently asked

What is Mode-S code ACA35D?
ACA35D is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N913RX.
Where is Mode-S ACA35D registered?
Mode-S code ACA35D 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 ACA35D broadcasting right now?
No active broadcast right now. Last signal was 4h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex ACA35D, octal 53121535, decimal 11,314,013.
What flights does ACA35D operate?
Mode-S ACA35D has broadcast 4 distinct callsigns, including CMD70, REH50, REH050, N913RX.