Both STANDBY PUMP switches will be OFF during crossfeed operation.
The engine-driven primary (HIGH PRESSURE) fuel pump is limited to 10 hours of operation,
throughout its TBO period, without standby fuel pump or engine-driven boost pump fuel pres-
Diagram shows typical fuel crossfeed situation with left wing fuel system supplying both en-
gines (All BOOST and STANDBY PUMPS operable). For selection of right wing fuel for cross-
feed reverse CROSSFEED switch position. Either coniguration will supply either engine during