Understanding P-Static Testing: An Important Part of Aircraft Maintenance

Why is This a Concern for Aircraft?

P-static can cause radio transmission disruptions, erratic navigation system readings, and can even create audible noise within pilot headsets. If not tested, it compromises both the efficiency and safety of operations. At CE Avionics, we understand how critical it is to detect and resolve precipitation static issues early to maintain peak performance of an aircraft. Read more about p-static testing on our website.

How Does CE Avionics Perform P-Static Testing?

Our p-static testing process is methodical and thorough, using specialized equipment and expertise. Here’s how we approach it in a nutshell:

• Initial Inspection:
  • We start with a visual inspection of the aircraft to identify any areas most likely to have static buildup. Common areas include bonding straps, static wicks, and external antennas.
• Surface Resistance Measurements:
  • Using specialized test equipment, we measure the resistance of surfaces and check that proper bonding occurs between airframe components including the paint. High resistance or low current flow of the charge might mean too thick a paint, improper undercoat primers or poor connections that need to be addressed.
• Ground Simulation:
  • We charge the aircraft and monitor the static discharge or rate of current flow while monitoring a VHF frequency. This combination gives our team the opportunity to see the aircraft’s response.
• Radio Interference Checks:
  • Our team assesses the impact of p-static on communication and navigation systems. Any interference is documented.
• Static Wick Performance Testing:
  • Static wicks play an important role in dissipating electrical charges. We test their bonding, conductivity, and overall performance to ensure compliance with safety standards.

What Happens if We Find Issues?

If we find any precipitation static issues, our team works quickly to implement solutions. Some solutions may be to:

• Replace or repair damaged static wicks or bonding straps.
• Rebond antennas, panels or whatever is the cause of the static charge.
• Assist in having surfaces reworked with conductive paint, or other materials, to improve charge dissipation.

In general, our goal is to make sure that every aircraft leaving our facility is free from or has a plan for the elimination of p-static-related risks.

How Often Should Aircraft Undergo P-Static Testing?

P-static testing is usually performed whenever pilots report communication or navigation issues or after the aircraft has been repainted. However, more frequent testing may be required in cases where aircrafts operate in regions that have high levels of precipitation or dust. Our experts can help determine the right schedule for your specific aircraft.