Which item is listed as the first element under 'When not to crossfeed'?

Which item is listed as the first element under 'When not to crossfeed'?

• A. BILLL
• B. Boost pump inop
• C. Indicator fail
• D. Leak

Answer: (A)

The key idea here is reading procedural order. In the section titled “When not to crossfeed,” items are listed in a specific sequence, with the first line representing the highest-priority contraindication. The first element shown there is BILLL, so that is the initial condition the manual flags as a reason to avoid crossfeeding. This makes it the best answer because the question asks for what appears first in that list, not for all possible reasons to not crossfeed. Crossfeed should be avoided when certain fuel-system faults are present, since attempting to crossfeed under those conditions could compromise fuel delivery or system safety. The other options describe valid faults that would also prevent crossfeeding, but they appear later in the list and thus are not the first item.

The key idea here is reading procedural order. In the section titled “When not to crossfeed,” items are listed in a specific sequence, with the first line representing the highest-priority contraindication. The first element shown there is BILLL, so that is the initial condition the manual flags as a reason to avoid crossfeeding. This makes it the best answer because the question asks for what appears first in that list, not for all possible reasons to not crossfeed.

Crossfeed should be avoided when certain fuel-system faults are present, since attempting to crossfeed under those conditions could compromise fuel delivery or system safety. The other options describe valid faults that would also prevent crossfeeding, but they appear later in the list and thus are not the first item.