ARP4024 Aircraft/Engine Fuel Pump Net Positive Suction Pressure Performance Test and Evaluation

This procedure applies to engine or airframe-mounted fuel pumps. The procedure recommends single-pass operation to minimize changes in fuel properties affecting NPSP capability. An optional method using a recirculation system is also included and may be specified at the discretion of the equipment specification.

This procedure defines the recommended test setup, test procedure, data acquisition, and data presentation.