Home › Part 107 Practice Tests › Maintenance & Preflight Inspection Questions › Question 31
What does a preflight check of individual battery cell information, where the system provides it, help detect?
- A.The wind speed at the takeoff site
- B.A cell that is significantly out of balance with the others, indicating a pack that needs attention
- C.The number of satellites in view
Correct answer
B. A cell that is significantly out of balance with the others, indicating a pack that needs attention
Why
A cell reading well away from the rest can signal a weakening or damaged pack. Such a battery should be evaluated and removed from service if the imbalance indicates a fault, rather than trusted in flight.
Source: FAA-G-8082-22 Ch. 12 · ACS knowledge area: Maintenance and Preflight Inspection Procedures · From the Maintenance & Preflight Inspection practice bank (MNT-031).