Airframe

Question 1

What effect can misalignment have on an aircraft?

Answer 1

Seriously affects flight quality and handling

Question 2

When would you do a symmetry check on an aircraft?

Answer 2

-any major structural repair
-severe conditions occurred such as heavy landing,severe turbulence,violent manouvres etc
-unusual flight characteristics reported
-wrinkling or buckling of structural skins
-loose or sheared fasteners
-areas of badly fitting access & inspection panels

Question 3

How is alignment of wings typically checked?

Answer 3

Using transit & plum bobs or theodolite & sighting rods

Question 4

What do typically alignment checks include?

Answer 4

-wings dihedral angle
-wing incidence angle
-verticality of the fin
-engine alignment
-symmetry check
-horizontal stabiliser incident

Question 5

What two tools can be used to check dihedral?

Answer 5

-special dihedral board with spirit level incorporated
-straight edge with adjustable level

Question 6

What tool is used to check incidence?

Answer 6

Incidence board

Question 7

What tool do you use to check fin verticality?

Answer 7

String or tape measure lateral datum

Question 8

What are he 3 steps in checking engine alignment?

Answer 8

-check offset
-check measurements
-compare to permissible limits

Question 9

Name the 4 effects of misalignment?

Answer 9

-changed flight characteristics
-impaired safety,control & operation
-rate of climb,stall & slow speed affected
-causes unpredictability