Originally Posted by
Heathrow Harry
The fact the police have kept him in suggests he has failed a test
From the BBC
A 49-year-old man from west London has been arrested and remains in police custody, Sussex Police said. The man, from Harmondsworth, West Drayton, has been arrested on suspicion of performing an aviation function when the level of alcohol was over the prescribed limit.
To my understanding is that could have been that his breath smelled or a number of other reasons for suspecting he may have been drinking.
All very well to discuss what our hypothetical course of action would be, but if there is no evidence yet that the FO in question really was over the limit, best to wait for the proof to emerge.