And left ailerons move up.
And left ailerons move down
Aileron moves up and the left aileron moves down
Aileron moves down and the left aileron moves up.
Discrepancies with a supply document number
Nicked area is near the edge of the plastic and spreading inward
White powdered glass is often seen in a chipped area
Visibility through the nicked area is slight
Chipped area has a smooth appearance
A grid made up of horizontal and vertical lines
Viewing lines through panel at a distance of at least 40ft away
A dark background placed outside of the panel while viewing from inside
A dark grid made up of parallel curved lines of varying lengths and thicknesses
Bubbles are never acceptable
They only impair vision along the edges of the panel.
They are well scattered and within acceptable number, diameter and spacing
They do not impair vision, are well scattered and within the limitations of the TO.
Filled in with aerodynamic smoothing compound
Curved to the precise contour of the repair area
Cut into a circular repair patch
Replaced as soon as practical
How much undamaged area should be removed
If the damage is near a sub-structural member.
If the damage is in an open area.
The final size of the patch.
Stop-drill all cracks.
Relieve stress concentrations.
Make sure the cutout is centered over a sub-structural member.
Anneal the cutout areas so the area is not work-hardened during the cutout operation.
Size and location of the cutout area
Diameter and head style of repair fasteners
Material composition and thickness of the cutout area
Location of existing fasteners within and outside the cutout area
Overall size of the cutout
Material thickness of the repair parts
Number of fasteners required for the repair
Classification of the repair to be accomplished
The damage is in a limited space
The skin and sub-structural damage cutout are the same
The skin and sub-structural damage cutout are not the same
Only the skin is damaged and the sub-structural member is intact
Center point of the cutout area.
Head style of the rivets to be used
Rivet spacing required on the filler plate
Direction of the stress concentrations within the part being repaired
Wrong measurements were used to develop the rivet pattern
Rivet spacing and row spacing are identical
Doubler is twice the size of the filler plate
Edge distance is beyond acceptable limits
Locating the centerline of the cutout area to use as a starting point
Measuring edge distance from the outer edges of the substructural member
Determining the edge distance requirements for the different head styles of the rivets
Placing the lengths of rivets required in the repair because of the substructural member
Existing rivet spacing for the fasteners in the substructural member
Smallest rivet spacing available regardless of where the cutout area is located
Strongest rivet spacing possible based on the diameter of the rivets used in the repair
Rivet spacing used on one side of the cutout, opposite the width of the substructural member
Select material that is one-gage thicker than the skin
Position the doubler material inside the cutout
Develop a fastener layout on the patch plate
Split the doubler into two parts.