WT-9 Dynamic Club S FLIGHT MANUAL Section 8 Page 8-
Daily inspection – is carried out in accordance with the instruction for
execution of the preflight inspection, which are contained in
Section 4, item 4.4.
Check after 25 hr. of operation – must be carried out according to the Maintenance
Manual for ROTAX Engine Type 912 ULS
Series.
Check after 50 hr. of operation – must be carried out according to the Maintenance
Manual for ROTAX Engine Type 912 ULS
Series
100 hr. check – must be performed according to the Maintenance Manual for
ROTAX Engine Type 912 ULS Serie every 100 hr. of operation
or 1 year, whichever comes first. The renewal of the spark plugs,
the fuel filter and the coolant are carried out after 200 hr. of
operation.
TBO ( Time Between Overhaul ) – 2000 hours or 15 years, whichever comes first
Oil change
must be performed according to the Maintenance Manual for ROTAX Engine Type
912 ULS Series. There is an oil drain screw on the bottom of the oil tank. There is
an oil filter at the left side beside the propeller gearbox. At every oil change, replace
the oil filter and open the old one with special tool, to ensure the engine is not
producing chips. Remove filter insert, cut top and bottom cover off the mat. Remove
filter mat, unroll and check it for metal chips, foreign matter, contamination and
abrasion. This check is important as it allows conclusions regarding the condition of
the engine and gives information about a possible cause of any failure.
8.2.2. Propeller
The propeller in operation does not require any special maintenance. In case of
propeller contamination wash its surface with a piece of cloth dipped in warm water
with addition of the usual detergent. The operator is allowed carry out repairs to
common little nicks on the leading edges, up to a maximum size of 4 mm. This repair
can be done by using Epoxy resin with filler. The damaged place is to be degreased
and fill with resin. After hardening the resin the repaired area is to be sanded and
protected with enamel or varnish of the epoxy or polyurethane type. Replace the
parts supplied by producer and remove the cone from the propeller. Any other
dismantling is forbidden. The repair of large demage must be carried out by the
manufacturer or by an authorised service centre. Operator’s Manual of the electrical
adjustable airplane propeller MTV-21-A includes additional information about
maintenance.
Period to overhaul (TBO) is – 2000 hours of operation or 72 mounths
8.2.3 Airframe
Daily inspection - is carried out in accordance with the instructions for the execution
of the preflight inspection, which are contained in Section 4, item
4.4.
Date: 1.12.2001
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