During automatic start, the engine will dry crank for up to ______.

During automatic start, the engine will dry crank for up to ______.

• A. One minute
• B. Two minutes
• C. Up to one minute
• D. Thirty seconds

Answer: (C)

During automatic start, a dry crank is used to rotate the engine without fuel to purge the fuel lines and verify mechanical readiness before fuel and ignition are introduced. This phase is limited to protect the starter and power source from overheating and wear. In the A320 start sequence, the dry crank can run for up to one minute. If the engine doesn’t reach the required speeds and conditions for ignition within that window, the start is aborted. When the dry crank completes successfully, fuel and ignition are applied and the normal start proceeds.

During automatic start, a dry crank is used to rotate the engine without fuel to purge the fuel lines and verify mechanical readiness before fuel and ignition are introduced. This phase is limited to protect the starter and power source from overheating and wear. In the A320 start sequence, the dry crank can run for up to one minute. If the engine doesn’t reach the required speeds and conditions for ignition within that window, the start is aborted. When the dry crank completes successfully, fuel and ignition are applied and the normal start proceeds.