FES Maintenance manual, v1.16 May 2020
Page 20 of 24
5. Periodical inspections
5.1 Introduction
This section introduces a list of inspections designed to ensure the safe operation of
the FES system during its lifetime.
Qualified personnel, authorized to do sailplane inspections, should perform these
inspections at the time of regular sailplane inspections.
5.2 Sailplane inspection periods
The FES inspections are carried out in parallel to the regular aircraft maintenance
and inspections required for the specific type of the sailplane. These occur usually:
−
After every 100 flight hours
−
At annual inspection
−
After rough landings or ground loops
−
At the end of the flight season or before the aircraft is stored for an extended
period in a hangar or trailer
5.3 Inspection after every 100 flight hours
It is mandatory to check the FES system thoroughly, according to the following
checklist:
Inspection after every 100 flight hours
Date of inspection:
………………
No. Checking
Conformity
Yes / No
Signature
1
FCU instrument wiring and functioning
2
Inspect ventilation opening - closing
3
Inspect propeller as per propeller manual
4
Inspect motor as per the motor manual
5
Check the motor mount on the motor frame
6
Check the gap between spinner and fuselage
7
Check all bolted connections
8
Check power cables for damage
9
Check battery packs
10
Check 12V battery condition - if installed
11
Inspect controller and main contactor
12
Perform a ground test run of the motor
13
Check operation of the propeller brake
14
Check operation of the propeller positioning