FES Maintenance manual Version 1.12
September 2016
Page 21 of 26
5.4 Annual inspection
It is necessary to check the sailplane every 12 months in accordance with the 100
flight hours inspection. Additionally check if there was any update of FES manuals on FES
website under download section!
5.5 Inspection after rough landing, or after ground loop
•
check Battery packs if there is any visible damage
•
check the FCU instrument for proper operation
•
check if there is any damage on the propeller blades in case they touched the
ground
•
Check motor attachment and spinner
5.6 Inspection at the end of flight season
Remove FES battery packs from the glider, and store them at dry place at room
temperature. The most suitable is to storage them at middle voltage which is about 3.7V
per cell (cca 52V per pack, or cca 104V on FCU total voltage measurement).
