Extra 200 - Page 271

CHAPTER 51
PAGE 28
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RA - FLUGZEUGBAU GmbH
SERVICE MANUAL EXTRA 200
PAGE DATE: 1. July 1996
Subsequently scarf the edges of the damaged portion with
sandpaper. Minimum length of scarf per fabric layer approx.
20 mm;
I M P O R T A N T ratio (laminate thickness : scarf length) approx. 1: 50.
Following the scarf procedure, clean the repair area thor-
oughly:
- Remove the sanding dust with a pneumatic vacuum
cleaner
- Clean the scarfed overlaps with carbon-tetrachloride or
acetone in case of dirt or grease was introduced during the
preparation of the overlap.
I M P O R T A N T Repair area must be free of dirt, dust and grease.
Wet all surfaces of the backing plate and the scarfed area with
resin mixture. Lay on pre-laminated fabric layer in accordance
to the layer sequence plan. Ensure correct style and direction
of fabric.
N O T E Lay out the required number and size of fabric pieces
on a piece of colored plastic foil and wet them with
resin mixture. Subsequently position them on the repair
area.
I M P O R T A N T Remove the plastic foil after each positioning process.
The repair area has to be cured under condition of vacuum
bagging. Proceed as follows:
- Apply peel nylon fabric on the last repair fabric layer.
REP
AIRS
Repair of Laminates