How many D-pressure indicators are located on each main landing gear (MLG)?

The correct answer indicates that there are three D-pressure indicators located on each main landing gear (MLG). These indicators play an essential role in monitoring the hydraulic pressure in the landing gear system. Having multiple indicators allows for redundancy and enhanced safety, ensuring that if one indicator fails, others can continue to provide critical information.

In aviation systems, redundancy is crucial. Having three indicators helps pilots and maintenance crews assess the condition of the landing gear pressure accurately and make informed decisions, particularly during takeoff and landing, where the reliability of landing gear mechanisms is vital for operational safety.