1-1A-8 Flashcards
(26 cards)
The distance between rivets in the same row, measured from center to center, should never be less than ____ _____ the shank diameter nor should it be more than ___ _____ the shank diameter.
four times; ten times
The edge distance from the center of the rivet shank to the edge of the material should never be less than ____ the diameter, nor should it be more than ___ times the shank diameter.
twice; four
Maximum angle of surface without spotfacing for rivet diameter 3/32-5/32.
20 degrees
Maximum angle of surface without spotfacing for rivet diameter 3/16
15 degrees
Maximum angle of surface without spotfacing for rivet diameter 1/4
10 degrees
Maximum angle of surface without spotfacing for rivet diameter 3/16
5 degrees
What is the most common rivet failure?
Shear failure
What are the signs of a rivet failure?
Tipped heads, looseness and sometimes chipped or cracked paint
What type of washer is used over an aluminum structure
Aluminum washer
Where does the wear on cable mostly occur?
At pulleys
What is the definition of a critical fatigue area?
working length of a cable where the cable runs over, under or around a pulley, sheave or through a fairlead, or flexed, rubbed or worked.
What is the critical fatigue area for cable with a swaged on fitting?
Within one foot.
A cable with how many broken wires in a critical fatigue area requires replacement?
One broken wire
A cable with how many broken wires in a non-critical fatigue area requires replacement?
At least three broken wires
A rescue hoist cable with how many broken wires requires replacement?
One or more broken wires.
How must external corrosion on a cable be removed?
With a coarse weave rag or fiber brush
What CPC is applied to a control cable?
MIL-C-16173, Grade 4
Turnbuckle terminals be screwed into the barrel so that not more than ____ threads on the terminal are exposed.
Three
On initial installation, the turnbuckle terminals should not be screwed inside the turnbuckle barrel more than ____ threads.
Four
Wear on outer cable wires beyond 50% should be what?
Cable should be replaced immediately
Wear on outer cable wires in between 40-50% should be what?
Cable should be replaced at the next convenient occasion.
Wear on outer cable wires less than 30% should be what?
Cable does not require replacement.
These terminals are used for attaching cables to quadrants and special connections where space is limited.
Swaged Ball Terminals
What is the test load of a locally fabricated, reworked and repaired cable.
Apply a test load of 60% of the minimum allowable breaking strength gradually to one end of the cable.
