7
DIRECTIONS FOR REPAIRS
7.1 SUBSTITUTE MATERIALS
If substitute materials are used please follow the instructions below:
•
all metallic materials, including fasteners must comply with the standards set by the
manufacturer. The standards can be found in the documentation supplied by the
manufacturer.
•
all parts which require welding must be checked for welding capabilities of the substitute
material
•
all fasteners (bolts, rivets, nuts, and washers) must be checked for the following
parameters: strength, heat treating, tolerance, pitch of thread, size of the head, and
surface protection. All substitute materials must be equivalent in quality to the original
materials.
•
check strength and tensile strength of all substitute materials
•
if uncertain of the quality of the substitute material perform a technological test.
7.2 GENERAL REPAIRS
7.2.1 Recommended Procedures for Repairs
Evaluate the damage and then follow these recommended instructions:
A) Small damages
which do not need to be repaired are: scratches no deeper than the
layer of the paint, paint defects, upholstery etc.
B)
All repairs must be performed in accordance with applicable regulations and
performed by properly authorized personal.
C)
If the
repair is impossible or too expensive
, the damaged part has to be replaced by a
new one.
7.2.2 Control Adjustments
Anytime an unusual resistance or clearance in the control system is noticed, check the
control system for any structural deformation. If the cable tension is lacking adjust the
tension with the turnbuckles. After the adjustment secure the turnbuckles again. Damaged
or worn out pins, bearings and clevises must be replaced. Check that the clevis is screwed
in sufficiently so that the fork is visible in the control opening in the rod nut.
TST-14 M – Aircraft Manual
rev.0 issued 2006-11-29 – page 39 of 40
