Electrify Your Skills: Airframe Electrical 2 Challenge 2026 – Soar to Success!

A growler test is used to check the armature windings for faults such as opens and shorted turns. The test applies a magnetic field and looks for abnormal current paths in the winding. If a turn is shorted, a localized current path alters the magnetic field in a detectable way (often giving a noticeable indication on the tester or a slight drag), revealing a winding fault. If there’s an open in the circuit, there’s no current path and no indication of a fault. This test specifically targets the armature windings, not bearings, insulation resistance, or the field winding.