Where is the main transmission oil filter pop-up indicator located?

• A. Under the cockpit
• B. On the tail rotor assembly
• C. Upper case of the main transmission
• D. In the pilot’s control seat

Answer: (C)

The main transmission oil filter pop-up indicator is located on the upper case of the main transmission. This location is crucial as it allows for easy visibility and accessibility for the pilot and maintenance personnel, ensuring that any issues with the oil filter can be promptly identified and addressed. The indicator's visibility on the upper case enables regular checks and maintenance routines to be conducted efficiently, which is essential for the overall performance and safety of the lifting system. Keeping the indicator in a prominent position aids in early detection of low oil pressure or clogged filters, helping to prevent potential mechanical failure.

In contrast, the other locations mentioned would not provide the same level of accessibility or visibility for monitoring the oil filter status. For example, placing it under the cockpit or in the pilot's control seat would not facilitate quick checks during operation, and a location on the tail rotor assembly would not be directly related to the main transmission's function.