For how long may an aircraft be operated after the Emergency Locator Transmitter (ELT) has been removed for maintenance?

The correct duration for operating an aircraft after the Emergency Locator Transmitter (ELT) has been removed for maintenance is up to 90 days. This allowance is established to ensure that there is an understanding of the importance of search and rescue capabilities in aviation safety.

The 90-day period provides a balance between the need for maintenance and the operational readiness of the aircraft. After this time frame, it becomes critical to have the ELT reinstalled and operational, as it plays a vital role in emergency situations. The regulations are designed to ensure that aircraft are equipped to signal their location in the event of an emergency, thus prioritizing safety for the pilot and passengers.

In an operational context, beyond this period without the ELT can lead to potential risks in search and rescue scenarios. Therefore, maintaining compliance with the 90-day rule is crucial for safe aircraft operations and adherence to aviation regulations.