INTERMITTENT (adj)  That stops and starts again, not continuous  THIS CAUSES INTERMITTENT OPERATION OF THE WARNING LIGHTS.  
 INTERMITTENTLY (adv)  In an intermittent "manner"  THE LIGHT COMES ON INTERMITTENTLY.  
 INTERNAL (adj)   Of, or on, the inner side  MAKE SURE FUEL COMES OUT OF THE INTERNAL EJECTORS.  
 INTERNALLY (adv)  Of, or on, the inner side  USE A BORESCOPE TO INTERNALLY EXAMINE THE COMBUSTOR.  
 intersect (v)  INTERSECTION (TN)  DRILL A HOLE AT THE INTERSECTION OF THE TWO LINES.  Drill hole where the two lines intersect.
 INTERVAL (n)  A distance or "gap" between two (TN) points in space or time  DO THE TEST AT FIVE-MINUTE INTERVALS.  
 INTO (pre)  1.Movement to something and access to it  IF SOMETHING GOES INTO THE OPENING, THIS CAN CAUSE DAMAGE TO THE ENGINE.  
   2.Function word that shows change, condition, result  THE PARTS OF THE STRUCTURE ARE DIVIDED INTO THREE GROUPS.  
 investigate (v)  FIND  FIND THE CAUSE OF THE FUEL LEAKAGE.  Investigate the origin of the fuel leakage.
 investigation (n)  EXAMINE (v)  EXAMINE FULLY THE DAMAGED AREA.  Carry out a detailed investigation of damaged area.
 inward (adj)  INNER  MEASURE THE INNER DIAMETER OF THE HOLE.  Measure the inward diameter of the hole.
 inward (adv)  IN  MOVE THE DOOR IN AND REARWARD.  Move door inward and rearward.

 
 
 IRREGULAR (adj)  Not regular  IF THE SIGNALS ARE IRREGULAR, REPLACE THE UNIT.  
 irregularity (n)  IRREGULAR (adj), UNUSUAL (adj), DEFECT (TN)  IF YOU GET IRREGULAR RESULTS, YOU MUST DO THE TEST AGAIN.  If you get any irregularities in the results, you must do the test again.
       IF YOU GET UNUSUAL RESULTS, YOU MUST DO THE TEST AGAIN.  
       THERE MUST BE NO DEFECTS IN THE SURFACE FINISH.  There must be no irregularities in the surface finish.
 IRREGULARLY (adv)  Not regularly  IF THE UNIT RECEIVES THE SIGNALS IRREGULARLY, REPLACE IT.  
 IS (v)  Refer to BE     
 ISOLATE (v),
 ISOLATES, ISOLATED, ISOLATED  To prevent a supply or connection to  OPEN THE CIRCUIT BREAKER TO ISOLATE THE SLAT SYSTEM.  
 isolation (n)  ISOLATE (v)  YOU MUST ISOLATE NO. 1 SYSTEM TO DO THE LEAKAGE CHECKS.  Isolation of No. 1 system is necessary to do the leakage checks.
IT (pn)  That "thing"  CAREFULLY MOVE THE DEFLECTOR UNIT DOWN UNTIL IT ENGAGES.  
 ITEM (n)  A "thing" that is "determined" or specified  LUBRICATE THESE ITEMS WITH GREASE.