Term
| What forms of wood, other than solid wood, are used in aircraft? |
|
Definition
|
|
Term
| What are the approved types of glues used in aircraft wood structure repair? |
|
Definition
| Casein and resin or any glue approved by the manufacturer |
|
|
Term
| What species of wood is used as a standard for strength properties? |
|
Definition
|
|
Term
| Are hard knots acceptable? |
|
Definition
Yes, within the limitations of AC 43.13-1A |
|
|
Term
| What type joint is generally used in splicing structural members? |
|
Definition
|
|
Term
| How may plywood be prepared for bending? |
|
Definition
|
|
Term
| What methods are used to apply pressure to wood glue joints? |
|
Definition
Brads, nails, screws, clamps and presses |
|
|
Term
| What area of a wood spar may not be spliced? |
|
Definition
Under a wing attachment, landing gear, engine mounts and lift strut fittings |
|
|
Term
| What is the maximum number of splices that should be made to any one spar? |
|
Definition
|
|
Term
| What is the minimum temperature for curing wood joints with resin glue? |
|
Definition
|
|
Term
| When are mineral streaks acceptable? |
|
Definition
| If inspection fails to reveal any decay |
|
|
Term
| What method will prevent a patch and a plywood pressure plate from adhering together due to extruding glue from the patch? |
|
Definition
| The use of waxed paper between the patch and pressure plate |
|
|
Term
| Why is it necessary to examine all stains and discoloration carefully? |
|
Definition
| To determine whether or not they are harmless, preliminary or advanced decay |
|
|
Term
| Why are light steel bushings sometimes used in wooden structures? |
|
Definition
| To prevent crushing the wood when the bolts are tightened |
|
|
Term
| What are the results of insufficient gluing pressure? |
|
Definition
| Thick glue lines and a weak joint |
|
|
