SECTION 17.
SAILPLANE REPAIRS
TECHNICAL SERVICE MANUAL
SZD-54-2
„Perkoz”
page 17.2
Allstar PZL Glider Sp. z o.o.
Doc No. 542.4.02
Issue II
April 2014
Revision
corrected
17.2. Composite structures repairing
17.2.1.
Repair conditions
In addition to requirements listed in the introduction the following conditions in
a room, where repair of composite structures is performed, should be assured for
lamination time:
a) relative humidity
≤ 85%,
b) temperature
≥ 66 °F.
After lamination (or bonding) temperature
≥ 66 °F should be maintained in the
room for a minimum 10 hours, that is until complete composite hardening.
It is required after hardening that repaired sites were heated for 15 hours at +122 till
+140
°F. Temperature measurement should be made with a thermometer covered
against direct heating by heat source (blower, radiator), placed next to the repair site.
Room where the repair is done should be clean, dry, free from dust and well
lighted. In addition, it is desirable to well-functioning, efficient ventilation.
Performing composite repairs personnel must be authorized to perform the
strength composites and have a workshop practice in the composite sailplanes
construction or repair.
Further given directions allow to make the correct repair.