When may portable electronic devices be used in an aircraft?

Portable electronic devices may be used in an aircraft when they do not affect aircraft operations. This guideline is crucial for ensuring flight safety, as these devices, if improperly used or if they generate interference, could pose risks to the aircraft's navigation and communication systems.

The regulation allows pilots and crew members to determine the appropriateness of device use based on the specific situation and the nature of the devices. For many modern aircraft, guidelines are often based on the capability of the aircraft systems to manage potential interference, which reinforces the idea that the safe operation of the aircraft remains the primary concern.

For example, some aircraft may allow the use of personal electronic devices in flight mode during specific phases of flight, such as cruising, as long as they do not interfere with flight operations. However, this usage is regulated, and each airline or operator may have their own policies that can vary based on their operating environment and equipment. Overall, awareness of the aircraft's operational context and adherence to regulations is essential for the safe use of portable electronic devices in flight.