Sandia SafE128 Axial Fan PMAD

The Sandia Aerospace SAFE 128 is a compact axial avionics cooling fan designed to mount directly to an avionics cooling port. It provides cooling airflow together with a fault-detection output that signals when fan speed falls below its preset threshold.

Part number 305468-00.

• Operating voltage: 22–31 VDC
• Nominal current draw: 0.100 A; start-up current: less than 0.250 A
• Cooling airflow: 20 CFM no-load (approximately 34 m³/h); 10 CFM at 0.08 in H₂O (approximately 17 m³/h at 2 hPa)
• Fault-detection output for reduced fan RPM
• Operating temperature: −20 °C to +55 °C
• Maximum operating altitude: 55,000 ft (approximately 16,800 m)
• Approximate dimensions: 60 × 73 × 37 mm, including pins
• Manufacturer documentation identifies FAA-PMA and DO-160D

For installation, wiring, connector and continued-airworthiness information, refer to the Sandia Aerospace SAFE 128 Installation Instructions. Verify suitability and approval status for the intended installation with the applicable aircraft documentation and qualified maintenance personnel.