Fuel that flows through the IDG cooler is returned to the ______________.

Fuel that flows through the IDG cooler is returned to the ______________.

• A. Outer tank of the respective wing
• B. Inner tank
• C. Center tank
• D. Aft tank

Answer: (A)

Fuel is circulated through a dedicated cooler to dissipate heat from the IDG, and this cooling loop is tied directly to the wing’s own fuel system. The fuel that flows through the IDG cooler is returned to the outer tank of the same wing. Keeping the cooling return in the same wing’s outer tank preserves per-wing fuel balance and avoids cross-bleed between tanks, which helps maintain accurate fuel quantity indications and stable system operation. The center or aft tanks aren’t part of this local cooling loop, so returning to those tanks would disrupt the designed balance and fuel management.

Fuel is circulated through a dedicated cooler to dissipate heat from the IDG, and this cooling loop is tied directly to the wing’s own fuel system. The fuel that flows through the IDG cooler is returned to the outer tank of the same wing. Keeping the cooling return in the same wing’s outer tank preserves per-wing fuel balance and avoids cross-bleed between tanks, which helps maintain accurate fuel quantity indications and stable system operation. The center or aft tanks aren’t part of this local cooling loop, so returning to those tanks would disrupt the designed balance and fuel management.