Assertion: pilot light's flame | /r/HasProperty | sustained at time
Facets:
Source sentences:
text: The chief objective in pilot operation is to supply a pilot gas/air mixture to the pilot nozzle at a sufficiently high pressure that a stable flame is sustained at all times, including occasions when there might not be any secondary air available continuously at the pilot nozzle, or "wind" conditions at the nozzle that will produce an axial vector that can disturb the desired mixture.