Where are the prime pumps located relative to the transfer pumps in the UH-72 fuel system?

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Multiple Choice

Where are the prime pumps located relative to the transfer pumps in the UH-72 fuel system?

Explanation:
The key idea is how the two pump types work together to keep fuel flowing reliably. In the UH-72, the priming (prime) pumps are placed in the supply tanks, while the transfer pumps sit in the main tanks. Having the prime pumps in the supply tanks primes the system right at the fuel source, pushing fuel through the lines and clearing air so the transfer pumps don’t have to deal with air pockets or a dry line. Then the transfer pumps in the main tanks move that fuel onward to the engine feed and other systems as needed. This arrangement ensures quick, reliable start and steady fuel supply under varying flight conditions. Placing pumps elsewhere would risk losing prime or insufficient transfer during high-demand situations.

The key idea is how the two pump types work together to keep fuel flowing reliably. In the UH-72, the priming (prime) pumps are placed in the supply tanks, while the transfer pumps sit in the main tanks. Having the prime pumps in the supply tanks primes the system right at the fuel source, pushing fuel through the lines and clearing air so the transfer pumps don’t have to deal with air pockets or a dry line. Then the transfer pumps in the main tanks move that fuel onward to the engine feed and other systems as needed. This arrangement ensures quick, reliable start and steady fuel supply under varying flight conditions. Placing pumps elsewhere would risk losing prime or insufficient transfer during high-demand situations.

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