3.1
Clean the Exterior Surfaces
CAUTION
CLEANING AGENTS THAT ARE NOT LISTED CAN AFFECT THE RAIN-REPELLENT
PERFORMANCE OF THE WINDSHIELDS.
1
Flush the exterior surface of the windows with clean fresh water. Loosen dirt, sand or
mud if necessary. Do this with the tips of your fingers, and in the direction of the water
flow.
2
Make sure that there are no abrasive particles on the transparency, especially in the
corners of the windows.
3
With a sponge moist with: clean water or a mixture of 50% clean water and 50%
isopropanol or a weak soap solution, clean the windows.
4
Flush the surface thoroughly with clean fresh water and dry with a clean moist chamois
leather.
3.2
Clean the Interior Surfaces
CAUTION
DO NOT USE CLEANING AGENTS THAT ARE NOT LISTED. CLEANING AGENTS
THAT ARE NOT LISTED CAN CAUSE DAMAGE TO THE WINDSHIELDS AND
WINDOWS.
With a chamois leather moist with clean water or a weak soap solution, clean the interior
windows.
4
Rain Repellent
CAUTION
THE AIRCRAFT CAN HAVE TWO DIFFERENT TYPES OF WINDSHIELDS INSTALLED
AND IT IS IMPORTANT THAT THE CORRECT RAIN REPELLENT IS APPLIED.
INCORRECT RAIN REPELLENTS ARE NOT APPROVED BY PILATUS.
These procedures give guidelines for applying rain repellent treatment to the windshields.
4.1
Rain repellent coating inspection intervals
The durability of the rain repellent glass treatment is dependent on the repellent and its type of
application, aircraft utilization and operating conditions. Below table provides recommended
inspection intervals. Each operator shall establish by its type of rain repellent and its type of
aircraft operating conditions if the interval requires adjustment.
Rain Repellent Type
Recommended Inspection Interval
Surfex 100 (MPG windshields)
6 months / 300 flight hours
Surface Seal DSS4040 heat cure (PPG
windshields)
12 months / 600 flight hours
Surface Seal DSS4040 no heat cure (PPG
windshields)
6 months / 300 flight hours
Section 2 - Aircraft Servicing
Ground Servicing Guide
Report No: 02484
Issue date: Nov 30, 2020
Page 2-4-3
PC24-A-A15-12-0050-01A-250A-A