Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

ACA308

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N913NM · PILATUS PC-12 · operated by SAN JUAN REGIONAL MEDICAL CENTER INC

Hex
ACA308
Octal
53121410
Decimal
11,313,928
Country
US
Tail
N913NM
Type
PC12
No current signal · last broadcast Jul 26, 20:30 UTC
Flights observed
231
Distinct callsigns
1
Country
US
Last broadcast
Jul 26, 20:30 UTC

Last known position

Most recent position reported by Mode-S ACA308.

Country allocation

The ICAO 24-bit address ACA308 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
N913NM - 231 2026-07-26

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 N913NM - Jul 26, 19:50 UTCJul 26, 20:30 UTC40m
2026-07-26 N913NM - Jul 26, 17:40 UTCJul 26, 18:20 UTC40m
2026-07-26 N913NM - Jul 26, 16:20 UTCJul 26, 16:30 UTC10m
2026-07-26 N913NM - Jul 26, 11:10 UTCJul 26, 12:05 UTC55m
2026-07-26 N913NM - Jul 26, 08:45 UTCJul 26, 09:40 UTC55m
2026-07-26 N913NM - Jul 26, 06:10 UTCJul 26, 06:45 UTC36m
2026-07-26 N913NM - Jul 26, 02:45 UTCJul 26, 03:00 UTC15m
2026-07-25 N913NM - Jul 25, 23:00 UTCJul 25, 23:30 UTC30m
2026-07-25 N913NM - Jul 25, 21:30 UTCJul 25, 21:55 UTC25m
2026-07-25 N913NM - Jul 25, 10:50 UTCJul 25, 11:15 UTC25m
2026-07-25 N913NM - Jul 25, 09:15 UTCJul 25, 09:35 UTC20m
2026-07-25 N913NM - Jul 25, 06:45 UTCJul 25, 07:15 UTC30m
2026-07-25 N913NM - Jul 25, 05:05 UTCJul 25, 05:30 UTC25m
2026-07-25 N913NM - Jul 25, 02:30 UTCJul 25, 03:00 UTC30m
2026-07-25 N913NM - Jul 25, 00:50 UTCJul 25, 01:15 UTC25m
2026-07-24 N913NM - Jul 24, 19:20 UTCJul 24, 19:45 UTC25m
2026-07-24 N913NM - Jul 24, 16:15 UTCJul 24, 17:20 UTC1h 5m
2026-07-24 N913NM - Jul 24, 09:40 UTCJul 24, 10:10 UTC30m
2026-07-24 N913NM - Jul 24, 08:10 UTCJul 24, 08:30 UTC20m
2026-07-24 N913NM - Jul 24, 05:10 UTCJul 24, 05:40 UTC30m
2026-07-24 N913NM - Jul 24, 03:10 UTCJul 24, 03:30 UTC20m
2026-07-24 N913NM - Jul 24, 00:05 UTCJul 24, 00:30 UTC25m
2026-07-23 N913NM - Jul 23, 22:25 UTCJul 23, 22:50 UTC25m
2026-07-23 N913NM - Jul 23, 20:20 UTCJul 23, 20:45 UTC25m
2026-07-23 N913NM - Jul 23, 18:25 UTCJul 23, 18:50 UTC25m
2026-07-22 N913NM - Jul 22, 18:35 UTCJul 22, 19:55 UTC1h 20m
2026-07-22 N913NM - Jul 22, 04:25 UTCJul 22, 04:50 UTC25m
2026-07-22 N913NM - Jul 22, 03:15 UTCJul 22, 03:40 UTC25m
2026-07-20 N913NM - Jul 20, 05:10 UTCJul 20, 05:40 UTC30m
2026-07-20 N913NM - Jul 20, 03:20 UTCJul 20, 03:50 UTC30m
2026-07-19 N913NM - Jul 19, 23:20 UTCJul 20, 00:35 UTC1h 15m
2026-07-19 N913NM - Jul 19, 20:55 UTCJul 19, 21:40 UTC45m
2026-07-19 N913NM - Jul 19, 19:20 UTCJul 19, 19:30 UTC10m
2026-07-19 N913NM - Jul 19, 06:55 UTCJul 19, 07:20 UTC25m
2026-07-19 N913NM - Jul 19, 05:15 UTCJul 19, 05:35 UTC20m
2026-07-19 N913NM - Jul 19, 01:55 UTCJul 19, 03:00 UTC1h 5m
2026-07-18 N913NM - Jul 18, 04:40 UTCJul 18, 05:50 UTC1h 10m
2026-07-18 N913NM - Jul 18, 02:19 UTCJul 18, 03:25 UTC1h 6m
2026-07-17 N913NM - Jul 17, 22:55 UTCJul 18, 00:04 UTC1h 10m
2026-07-16 N913NM - Jul 16, 04:40 UTCJul 16, 05:05 UTC25m
2026-07-16 N913NM - Jul 16, 02:55 UTCJul 16, 03:20 UTC25m
2026-07-15 N913NM - Jul 15, 23:35 UTCJul 16, 00:15 UTC40m
2026-07-15 N913NM - Jul 15, 21:10 UTCJul 15, 21:50 UTC40m
2026-07-15 N913NM - Jul 15, 20:25 UTCJul 15, 20:35 UTC10m
2026-07-15 N913NM - Jul 15, 04:20 UTCJul 15, 04:50 UTC30m
2026-07-15 N913NM - Jul 15, 02:25 UTCJul 15, 02:50 UTC25m
2026-07-14 N913NM - Jul 14, 20:35 UTCJul 14, 21:00 UTC25m
2026-07-14 N913NM - Jul 14, 19:20 UTCJul 14, 19:50 UTC30m
2026-07-10 N913NM - Jul 10, 05:20 UTCJul 10, 05:50 UTC30m
2026-07-10 N913NM - Jul 10, 03:20 UTCJul 10, 03:50 UTC30m

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 N913NM page for operator, model, and routing details .

Mode-S ACA308 frequently asked

What is Mode-S code ACA308?
ACA308 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N913NM.
Where is Mode-S ACA308 registered?
Mode-S code ACA308 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 ACA308 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 20:30 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex ACA308, octal 53121410, decimal 11,313,928.
What flights does ACA308 operate?
Mode-S ACA308 has broadcast 1 distinct callsign, including N913NM.