What is the maximum approved static ground resistance?

What is the maximum approved static ground resistance?

• A. 8,000 ohms
• B. 12,000 ohms
• C. 15,000 ohms
• D. 10,000 ohms

Answer: (D)

Static ground resistance is about how quickly static charges are drained away to the aircraft structure when you attach a grounding path during maintenance. Keeping this resistance low ensures there’s a reliable path for static currents, protecting sensitive avionics from discharge and reducing the risk of Static Electricity Discharge (ESD) events. The maximum approved value for static grounding is 10,000 ohms. Values at or below this limit meet the standard, while anything higher would not. So 10,000 ohms is the largest value that remains within spec. A reading of 12,000 or 15,000 ohms would indicate an inadequate ground path, whereas 8,000 ohms is acceptable because it’s below the maximum.

Static ground resistance is about how quickly static charges are drained away to the aircraft structure when you attach a grounding path during maintenance. Keeping this resistance low ensures there’s a reliable path for static currents, protecting sensitive avionics from discharge and reducing the risk of Static Electricity Discharge (ESD) events.

The maximum approved value for static grounding is 10,000 ohms. Values at or below this limit meet the standard, while anything higher would not. So 10,000 ohms is the largest value that remains within spec. A reading of 12,000 or 15,000 ohms would indicate an inadequate ground path, whereas 8,000 ohms is acceptable because it’s below the maximum.