Final answer:
When necessary to execute a missed approach after the MAP, the pilot should immediately begin the published missed approach procedure and inform ATC. This ensures safety by providing obstacle clearance and keeps the aircraft separated from other traffic.
Step-by-step explanation:
If it becomes necessary to execute a missed approach after passing the Missed Approach Point (MAP) on an approach, the recommended action is to immediately initiate the published missed approach procedure. This involves following the specific missed approach instructions provided for the particular approach you are flying, which typically includes climbing to a designated altitude and heading towards a specified navigational fix or geographic point.
The pilot should also inform air traffic control (ATC) as soon as possible that they are executing a missed approach. It is important to act promptly and in accordance with the published procedures to ensure safety, as the missed approach instructions are designed to provide obstacle clearance and separation from other air traffic.