FAA code and description
| Code | Grade | Royal Navy description | Army/RAF description |
|---|---|---|---|
| FAA 1 | Fully fit | Fully fit, field or seas worldwide | Can do all aspects of their job and all general military duties |
| FAA 2 | Fit for trade and fit for restricted general or military duties | Fit for flying, aircrew duties | Able to do all aspects of their primary task but not all the physical aspects of their physical duties (this might apply to a clerk but is unlikely to apply to an infantry soldier) |
| FAA 3 | Unfit for trade but fit for restricted general or military duties | Fully employable ashore/ship in harbour or ashore only in own trade/skill at sea Fit for limited flying aircrew duties | Unable to do primary task but able to perform some limited physical tasks (eg, aircraft engineer who cannot perform his trade but can do some other physical duties or an infantryman who can work in MT or stores) |
| FAA 4 | Unfit for all but sedentary duties | Employable in restricted duties ashore only | Only able to perform light duties |
| FAA 5 | Off all duties | Off all duties (ashore sick leave) | On sick leave, Y-listed or non-effective |
FAA, functional activity assessment; MT, mechanical transport; RAF, Royal Air Force.