COMCO IKARUS
Maintenance Manual C42 Series
MaintenanceManual C42-
Series_Issue_VII_18.02.2014.doc
Revison No.:1 52 from 107
4.1.5 Propeller
Any defect propeller parts must be replaced by new parts. Only original spare parts
may be used.
In the case of composite propellers, even slight damage to the surface can have
grave effects on strength properties and thus safety. If cracks go deeper than the
outer surface, propeller strength is reduced and humidity can seep into the structure
which can result in propeller imbalance.
It is thus very important that the propeller be checked before each flight. If in doubt,
contact an expert.
Propeller imbalance is usually the cause of vibration in flight. In this case, the pro-
peller should be checked for proper tracking and setting by an IFC / ISC.
4.2 Pre-flight check
Before beginning flight operations, the pilot in command must carry out a visual
inspection of the aircraft. The relevant check points are also listed in the aircraft flight
manual.
Power plant:
1. Check propeller for damage and security of spinner.
2. Check the cowling in the vicinity of the propeller for scratches (this is a sign of
improper engine suspension or cowling attachment).
3. Check for signs of leaking under the engine cowling.
4. Check coolant and lubricants.
5. Check security of engine cowling.
6. Check that the coolers are clean (water cooler and oil cooler, if appropriate)
7. Coolant vents clear of obstructions
8. NACA inlet clear of obstructions (C42 B / E)
Landing gear:
1. Check security of all parts (wheel pants, brake cylinder, brake discs)
2. Check for visible deformation
3. Check air pressure in the gas dampers (aircraft aligned straight; compress
landing gear by pushing aircraft down and release again, gas dampers must
return to their fully extended position)
4. Check pressure and condition of tyres
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