Fixing a sticky touchscreen on an Avidyne glass cockpit in a piston single-engine aircraft is a straightforward process that focuses on proper cleaning and maintenance. A sticky or tacky feel on the screen is almost always caused by a residue buildup from skin oils, dust, or improper cleaning solutions. The solution is to use a specific, non-abrasive cleaning method to restore the screen’s smooth surface.
The Problem: Residue Buildup
Avidyne displays, like other modern glass cockpits, feature an anti-reflective and anti-glare coating on the screen. This coating can become sticky or tacky when residue builds up on it. This residue can be a combination of:
- Skin Oils and Fingerprints: The most common cause. The natural oils from a pilot’s fingertips can leave a tacky film on the screen over time.
- Improper Cleaning Solutions: Using household cleaners, especially those with ammonia or alcohol, can damage the anti-glare coating and leave a residue that feels sticky.
- Dust and Debris: Dust particles can become embedded in the oil and residue, further contributing to the sticky feel.
The Professional Cleaning Process
The principle of consistency is key in this process. A specific, methodical approach is required to ensure the screen is cleaned without causing damage. The following is a professional cleaning process that adheres to the principle of authority, using manufacturer-approved methods.
- Power Down the Unit: Always turn off the avionics display before cleaning. This not only prevents accidental inputs but also makes smudges and residue more visible, allowing for a more thorough cleaning.
- Use a Microfiber Cloth: Use a clean, lint-free microfiber cloth. These cloths are designed to gently lift dirt and oils without scratching the delicate screen.
- Use an Approved Cleaner: Dampen the microfiber cloth with an isopropyl alcohol solution (70% or less) or an avionics-specific screen cleaner. Never spray the solution directly onto the display, as it can seep into the seams and cause internal damage.
- Wipe Gently: Use a gentle, linear motion to wipe the screen. Avoid applying excessive pressure, which can damage the screen’s delicate layers. Wipe from top to bottom or left to right until all the residue is removed.
Preventing Future Stickiness
- Proper Hand Hygiene: Wash your hands before flight to minimize the transfer of skin oils to the screen.
- Keep a Dedicated Cleaning Kit: Have a small cleaning kit with a microfiber cloth and an approved cleaner on hand in the cockpit.
- Avoid Unauthorized Cleaners: Do not use any cleaners not approved by the manufacturer. Products like Windex or other household cleaners can permanently damage the anti-reflective coating.
The Aero Center is located at William J. Fox Airfield KWJF | Lancaster, CA. Contact us at 209.885.6950 for questions or appointments.