What is the maximum time a pilot can wait after changing their permanent mailing address before notifying the FAA?

The correct answer is 30 days because the FAA regulations stipulate that pilots are required to notify the FAA of a change in their permanent mailing address within this timeframe. This requirement ensures that all necessary communications, renewals, or notifications from the FAA can reach the pilot without delay, maintaining current records and compliance with regulations. Timely notification is essential for safety and regulatory purposes, allowing the FAA to keep accurate and up-to-date information about pilots and their licenses.