Complete emergency checklist items appropriate to the airplane in a timely manner and a...

Bottom line

To be prepared for emergency situations, memorize the immediate action items and, after completion, refer to the appropriate checklist. Certain immediate action items (such as a response to an engine failure in a critical phase of flight) are best committed to memory. The manufacturer's checklist or an aftermarket checklist that conforms to the manufacturer's procedures for the specific make, model, and model year may be used.