Final answer:
If a fuel leak is reported from the engine drain mast during engine start, the procedure should be stopped, the fuel source isolated, and the situation assessed for further actions.
Step-by-step explanation:
If during engine start the ground crew reports a fuel leak from the engine drain mast, several steps should be followed:
- Stop the engine start: Safety is the top priority, so shutting down the engine start procedure is essential to prevent any further risks.
- Isolate the fuel source: Identify the fuel supply and isolate it to prevent the leak from escalating.
- Assess the situation: Determine the severity of the leak, potential hazards, and the need for expert assistance or repairs.
It is crucial to follow proper procedures and prioritize safety when dealing with a fuel leak during engine start.