Regulations and Government
SAFO Warns of King Air 90 Fuel Mismanagement
If improper fuel planning allows fuel to be depleted on that side, both engines will most likely flame out, even though usable fuel remains in the tanks.

Improper fuel management of crossfeed operations during a boost pump failure in Textron Beechcraft King Air 90-series airplanes can cause a dual engine failure, even though usable fuel may remain, according to a new FAA Safety Alert for Operators  (SAFO 18001).