NB: The definitions below are for words, or technical vocabulary, specific to Military Air Environment use.
Where a word appears in the Oxford English Dictionary (OED), the definition below is specific only to the
associated context and OED definitions should be used in all other usages.




TermAbbreviation
Chapter Reference
Service DeviationSD

Description
For legacy aircraft that have yet to move to the Generic Aircraft Release Process (GARP), a permitted deviation
from the MA Release for the purpose of Service-regulated flying. (JSP 553)