SECTION 17.
SAILPLANE REPAIRS
TECHNICAL SERVICE MANUAL
SZD-54-2
„Perkoz”
page 17.26
Allstar PZL Glider Sp. z o.o.
Doc No. 542.4.02
Issue II
April 2014
Revision
corrected
Main bolt
Locking pin
Nominal dimension D
22 (0,866
”) H7
14 (0,551
”) H7
1st reaming step D
1
22,25 (0,876
”) H7
14,1 (0,555
”) H7
2nd reaming step D
2
22,5 (0,886
”) H7
14,2 (0,559
”) H7
3rd reaming step D
3
22,75 (0,896
”) H7
14,3 (0,563
”) H7
17.6.4.
Canopy perspex
Sailplanes canopy is made of organic glass, methyl polymethacrylate. In case
of inner minor microcracks appearance (caused by ageing of material exposed to
sunlight), the only recommendation is to replace whole canopy or perspex. The same
recommendation applies when there are holes in canopy or more than 6
” long
cracks.
To avoid further cracking of short cracks:
drill small hole at the end of the crack not longer than 2
”,
glue together the crack not longer than 6
”.
Fig. 17-28. Way to avoid further cracking of perspex
Cracks or complementing parts are to be glued with the use of dedicated
organic glass glue in accordance to glue manufacturer guidelines.
