| 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. |
| Term | Abbreviation | Chapter Reference |
| Engineering Authority | EA |
| Description |
| The engineering staff responsible, usually to the PT Leader, for exercising engineering judgement in managing |
| those support functions that have a bearing on the safety of a range of aircraft or other technical equipment. |