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Removal of damages at the fuel system usually consists in replacement of damaged parts and equipment.
The main damage which mandatory requires repair work is the loss of airtightness at the wing fuel tanks.
To repair the wet (wing) fuel tanks, proceed as follows:
1.
 Drain all fuel from tanks;

2.
 Dismount the wing with damaged fuel tank and lay it on protected framing trestles;

3.
 Remove all traces of dust and dirt from the wing areas near the tank;

4.
 Open the filling cap and blast with compressed air until the tank is completely dried; check its cleanliness condition.

5.
Mix the pink hardener with base in the ration 1:15 (by weight); always prepare the whole quantity of base coat primer in a container with the whole quantity of hardener in the container. To

S.C. AEROSTAR  S.A.
FESTIVAL R40S
BACAU - ROMANIA
   AIRPLANE MAINTENANCE MANUAL
mix the composition, use a paddle made of plastic materials: organic glass, textolite etc. or other corrosion-proof material, until the pink color completely disappears.
6.
 Using a short-bristle brush, apply a 0.4-0.5 mm (0.016-0.02 inch) layer of sealant 1005L on the entire inside area of the tank.

7. Let the tank dry for 20 minutes at 25oC.

8.
 Apply a second layer of sealant 1005L, by splashing (pouring and turning the plane over on all sides);

9.
 Use hot air to dray the tank.

10.
Check for any clogging at all vents.

11.
Check for any leakage.
Necessary materials and tools:
-Sealant 1005L;
-Brushes;
-Cotton cloths;
-MEK solvent (methyl-ethyl-cetone);
-Compressed air supply, hot air supply.

 

 

CAUTION:
1.
 Always wear protective equipment, gloves and gas mask.

2.
 Do not work with open fire. Do not smoke.

6. PROPELLER
6.1. Description of propeller
FESTIVAL R40S is equipped with a three-blade Klassic 170/3/R propeller, made of sandwich composites, of a high reliability level. This propeller is of fixed pitch, adjustable on ground
6.2. Propeller design data
Manufacturer : WOODCOMP, Kremen - Czech Republic Type / model : Klassic 170-3-R No of blades / material : 2 blades / composite materials Maximum diameter : 1720 mm (5.64 ft)  Pitch : adjustable on ground Propeller pitch on ground  with engine at full speed : 2700 rpm Adjustment range        : 6 o – 17 o 
6.3. Propeller maintenance
Complete data on propeller, as well as propeller operation and maintenance instructions can be found in the Propeller Operating and Maintenance Manual.
7. UTILITY SYSTEMS
7.1. Oil system
Main components of oil system:
-oil tank
-oil cooler
　
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