When are radios required in New Zealand flight operations?

Radios are required during flight operations in New Zealand when flying more than 30 minutes from shore due to safety and communication needs. This requirement ensures that pilots maintain contact with air traffic services and are able to receive crucial information, especially in the event of an emergency while operating over water. This distance is significant because it indicates that the aircraft is far enough from land that communication could be vital for navigation and safety.

In contrast, flying above 5000 feet does not inherently require the use of radios, as it can vary based on the type of airspace and specific regulations that apply to that altitude. Similarly, flying outside of controlled airspace does not automatically necessitate a radio; many pilots operate in uncontrolled airspace without radio communication, provided they adhere to visual flight rules. Lastly, night operations do not specifically mandate radio use, although they may be advisable for enhanced situational awareness and safety in certain circumstances.