When and how do you clean the AAR-47s?

The AAR-47 system, which is used on helicopters for detection and warning of incoming missiles, requires specific cleaning protocols to maintain its functionality and prevent damage. Cleaning the AAR-47s during a DTA (Daily Turnaround Assessment) is essential because this is when routine inspections and servicing are conducted to ensure the aircraft is operationally ready.

Using 1 fluid ounce of cleaning solution per gallon of water with a low-lint cloth is recommended because this method provides a gentle yet effective way to remove debris and contaminants without scratching sensitive components. The low-lint cloth minimizes the risk of leaving behind fibers that could interfere with the system’s sensors. Cleaning during the DTA also ensures that the system is routinely inspected and maintained without significantly interfering with flight operations.

In contrast, cleaning only during weekly maintenance with soap and water would not be frequent enough to ensure optimal performance, while using a high-pressure washer could damage the delicate components of the AAR-47. Daily cleaning with alcohol wipes, while effective in some situations, might not provide a thorough clean necessary for the specific equipment requirements. Thus, the recommended cleaning process maintains both the AAR-47’s functionality and the integrity of the system.