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After 3 working hours the mounting of the propeller has to be checked and the screws
retightened.
5
Pre-Flight Checks
Before every flight the following has to be checked:
No tolerance of the propeller tips
-
All blades are fixed
-
blades are not damaged and have no cracks
-
Check bolts for tightness
-
Wire locking's are in correct state
-
Slight resin-flaking's by debris can be accepted, but should be repaired soon. This can be
achieved by sparingly applying our special resin. If these checks are not satisfactory the
operation has to be suspended immediately, and the propeller repaired.
Warning:
A propeller failure has more serious consequences than an engine failure! Due to damaged
blades an unbalance can arise, which can cause the motor to be torn out of its bracing,
thereby changing the proportions of the centre of gravity in such a way that a stable flight
attitude cannot be maintained.
6
Maintenance
After flight operation the propeller is to be cleaned. This prevents the build up of dried
grass, insects etc. on the blades.
Cleaning of the blades should be carried out with a soft sponge using a weak detergent
solution. If it seems necessary, the blade surface can be polished from time to time with car-
polish paste.
If the position numbers on the blades do not exist anymore, a guide for precise positioning
of the individual blades may be obtained from info@helix-propeller.de.
Manual H50F
Ausgabe 15.01.2016
A specific time between overhaul for our ultralight
propeller is not required from our side. To continue the
operation with no limitation with a positive result at
annual inspection. Current and future technical notice
will be published on our web site: http: /helix-
propeller.de under Documentation / Technical releases.
Seite 10 / 11
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