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NXG-900™ GPS

Product overview

The NXG-900 provides critical aircraft information including position, velocity, and ground track for ADS-B Out messages. Its versatile design allows signals from the GPS satellite constellation and Satellite-Based Augmentation System (SBAS), including Wide Area Augmentation System (WAAS), as well as other systems. This commercial off-the-shelf package is used with one or two ACSS NXT-600, NXT-700 or ATDL Mode S transponders to provide legacy aircraft operators with a simple path to satisfy ADS-B mandates. It will also work with select 3rd party transponders.

  • Rule-compliant WAAS position source
  • ADS-B In providing 978 MHz UAT, Free Weather (FIS-B)
  • Wi-Fi dongle interface module to compatible mobile applications
  • Certified to TSO-C145c, -C154c and C157a

The NXG-900 provides an ARINC 743A based output, while meeting the Part 25 aircraft environmental levels.

Key Features


The NXG-900’s ADS-B receiver provides subscription-free weather (FIS-B) to mobile applications such as Android, iOS and Windows. FIS-B weather products include NEXRAD, CONUS NEXRAD, METARs, TAFs, PIREPs, winds and temperatures aloft, NOTAMs, AIRMETs and SIGMETs.



In addition to the GPS satellite constellation, SBAS and WAAS, the NXG-900 utilizes signals from EGNOS (Europe), GANAN (India), and MSAS (Japan).

Product specifications

PART NUMBER 9009000-55000
PHYSICAL Size (inches): 2.29" (H) x 4.78" (W) x 6.50" (L)
Weight: 1.6 lb.
Mounting: 4-point Flange Mount
Cooling: Passive
CERTIFICATION Environmental: DO-160G
TSO/ETSO: C145c, C154c, C157a
Software: DO-178B Level C
ADS-B Capability: ADS-B In per DO-260B (for FIS-B)
GPS Capability: Class Beta-1 per RTCA DO-229D
Operating Altitude: Sea Level to 55,000 ft
NOTE: UAT capability is restricted to 24,000 feet or below
Operating Temperature: -55 to +70° C
Power: 28VDC
Power Consumption: 8.9 Watts (nominal), 11.5 Watts (maximum)
No. of Antenna Ports: 2 (GPS & L-Band/UAT)
INTERFACES Diagn. Tool Interface: Mini-USB or Wi-Fi
Mobile Applications: Wi-Fi
Transponder Interface: Compatible ACSS Transponders


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Commercial aircraft inflight


Access technical publications

To gain access to the latest technical publications, service bulletins and other pertinent information about your recorders or other L3Harris devices, operators and authorized repair facilities need to register with our technical support organization for the online library.

Product support / Customer service:
Phone: +1 (321) 674-4900

Technical publications:
Orders / Information: +1 (623) 445-7070 (option 3)

Cage Code / Federal Supply Code: 1WYD3

Facility / Shipping / Mailing address:
19810 N 7th Avenue
Phoenix, AZ 85027 USA

Order administration / Sales / General inquiries:
Phone: +1 (623) 445-7040
Fax: +1 (623) 445-7004

Repair and overhaul administration:
Phone: +1 (623) 445-7030
Fax: +1 (623) 445-7002

AOG services:
Regional, Business Jet & Military
Administered by logistics partner AVGroup
Provides exchange and rental services of ACSS LRUs to existing ACSS customers.
Phone: +1 (321) 674-4900
Fax: +1 (770) 457-8563


  • NXG-900™ GPS Brochure

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