chock (v)  CHOCK (TN)  PUT THE CHOCKS AGAINST THE MAIN GEAR WHEELS.  Chock main gear wheels.
 choice (n)  ALTERNATIVE (adj), SELECTION  TABLE 1 GIVES ALTERNATIVE ADHESIVES WHICH YOU CAN USE TO DO THIS REPAIR.  In Table 1 is a choice of adhesives which you are allowed to use when you do this repair.
       MAKE A SELECTION FROM THE AVAILABLE SHIMS TO GET THE CORRECT THICKNESS.  Make a choice from the available shims to get the correct thickness.
 circle (v)  AROUND (pre)  THE POINTER MOVES AROUND THE DIAL.  The pointer circles the dial.
 CIRCULAR (adj)  Has the shape of a circle (TN)  POLISH THE WINDOW WITH A CIRCULAR MOVEMENT.  
 circulate (v)  supply  SUPPLY AIR AT 24 C TO THE AREA.  Circulate air at  24 C in the area.
 clamp (v)  CLAMP (TN)  ATTACH THE ADJACENT CABLES WITH A CLAMP.  Clamp adjoining cables together.
 classification (n)  CLASS (TN)  THERE ARE FOUR GENERAL CLASSES OF FASTENERS.  Fasteners can be separated into four general classifications.
CLEAN (adj)  That does not include dirt (TN) or unwanted material  MAKE SURE THE AREA IS CLEAN.  
 CLEAN (v),
 CLEANS, CLEANED, CLEANED  To remove dirt (TN) or unwanted materials  CLEAN THE GASKET CONTACT AREA.  
 cleanliness (n)  CLEAN (adj)  CONDITIONS FOR A SATISFACTORY BOND ARE:
 
      A CLEAN SURFACE
 
      THE TEMPERATURE
 
      THE PRESSURE A satisfactory bond depends on the cleanliness of the surface, the temperature, and the pressure.

 
 
 CLEAR (adj)  Without blockage or interference (TN)
 NOTE  : For other meanings, USE : TRANSPARENT.  MAKE SURE THAT THE PITOT AIR INLET IS CLEAR.  
 clear (v)  CLEAN, or different construction  CLEAN THE DRAIN HOLE.  Clear the drain hole.
       LIFT THE SEAT UNTIL IT IS AWAY FROM THE TRACK LOCKS.  Lift seat so that it clears track locks.
 CLEARANCE (n)  The clear space between two objects  MAKE SURE THERE IS A  CLEARANCE BETWEEN THE LEVER AND THE ROLLER.