Pilot Operating Handbook
Cavalon
SECTION 8
HANDLING / MAINTENANCE
AutoGyro_POH_Cavalon 915iS
Revision 1.0 – Issue Date 08.MAY.2019
8-5
8.10 Replenishing of Fluids
8.10.1
Engine oil
See engine manufacturer’s manual.
8.10.2
Engine coolant
See engine manufacturer’s manual. Engine cowling must be removed!
8.11 Engine Air Filter
The air intake filters need to be replaced or cleaned according to the manufacturer‘s
recommendation. Depending on environmental conditions, such as dust, sand, or pollution
the recommended rate of maintenance should be increased as required. The engine
cowling must be removed!
8.12 Propeller
Clean regularly as contamination will noticeably decrease its efficiency, resulting in a
negative effect on both aircraft performance and noise emission. Use either pure water or
add mild cleaning additives. Let contamination soak, then remove with a soft cloth or micro
fibre material and rinse thoroughly with water. Check for erosion and damage, especially at
the leading edge and blade tips. Check tight fit at the propeller blade root or any unusual
sound when tapping the blades, especially in the case of a variable pitch propeller. If in
doubt or if damage is obvious, consult the aircraft manufacturer or a qualified maintenance
station. Minor chips may be repaired. Consult the AMM for detail or propeller manufacturers
manual (where available).
8.13 Battery
The aircraft is fitted with a 13Ah maintenance-free gel electrolyte or, where approved,
lithium ion battery. Maintenance is therefore limited to outside soundness, correct
attachment, and cleaning. Check integrity of the battery as leaking fluid contains corrosive
sulphuric acid which could lead to extensive damage when contacting the framework and
attachments.
Charge the battery only with a charging device which is suitable for the battery type fitted.
CAUTION
The battery must never be deep discharged, as it will be damaged. If so, it
might need to be replaced.
8.14 Winter Operation
The cooling system for the cylinder heads of the engine is filled with a mixture of anti-freeze
and water, which gives freezing protection down to -20 °C. Check the protection
temperature of the coolant and add anti-freeze as required.
If temperatures are expected to fall below protection temperature, drain the coolant, and if
required for service, refill with pure antifreeze. As anti-freeze ages, renew the coolant every
two years. Read the engine manual for the manufacturer’s recommendations.
