Example:
 
 WRITE:  If you think that snow will fall, put the aircraft in the applicable configuration.
 NOT:  If you think it will snow, put the aircraft in the applicable configuration.

 
 Some unapproved words are used to complete Technical Names ("main landing gear").  Do not use these unapproved words unless they are part of a Technical Name.
 
 Example:
 
 WRITE:  Retract the main landing gear.
    ("Main landing gear" is a Technical Name.)

 
 Example:
 
 WRITE:  Keep the primary part of the assembly.
 NOT:  Keep the main part of the assembly.
    ("Main part" is not a Technical Name.)

 
 RULE: 1.7 Use the official name (shortened if necessary).
 
 Avoid slang or jargon words. Make sure the words you choose are common words (the words must have meaning to all of the international aerospace industry).
 
 Example:
 
 WRITE:  Paint the surface again if it is not smooth.
 NOT:  Repaint the surface if it is alligatored.
    ("Alligatored" as a paint description is not universal).

 
 RULE: 1.8 Do not use different Technical Names for the same thing.
 
 If you decide to call something e.g. "servo control unit", call it that in all places (including on illustrations).  Do not call it "actuator" for example, somewhere else.
 
 RULE: 1.9 If you have a choice, use the shortest and simplest name.
 
 Example:
 
 WRITE:  Outlet of the pump
 NOT:  Pump outlet volute

 
 There are Technical Names which have local or regional meaning only. Choose Technical Names which have the most universal meaning.
 
 Example:
 
 WRITE:  Use a 12-inch wrench handle during this procedure.