What is a consequence of initiating a missed approach prior to the MAP?

Initiating a missed approach prior to the missed approach point (MAP) means that the pilot has not yet reached the point in their approach where they are expected to make a decision about whether to continue to land or to execute a missed approach. In this case, following the Instrument Approach Procedure (IAP) as specified is essential because it provides the proper guidance and protocol for safely executing the missed approach.

The IAP contains the necessary instructions, altitude requirements, and navigational information that the pilot must adhere to during the missed approach phase. This procedure is designed to ensure safety and consistency in operations, especially in low-visibility conditions where the pilot relies on instruments. The adherence to the IAP ensures that the aircraft will follow a definitive path to avoid obstacles and to ensure a safe transition from the approach phase to either the missed approach procedure or diversion to an alternate airport as necessary. Therefore, the requirement to follow the IAP underscores the importance of maintaining operational safety during critical phases of flight.