Before the Sea King HAS1 grew its barn doors, the intake was prone to all sorts of inputs, include heaps of salt build up on the IGV's.
Prolonged hovering in low winds overwater would tend to reduce vis with salt on the screens, so I arranged for a bucket of fresh water to clean the windows during hot turnrounds on Ark. Worked fine for a week, until one enthusiastic lad flung the water right over the screens, and straight into the No 1 engine intake: 15 litres was enough to put the flame out but leave the windscreen untouched
I was advised to put up with dirty screens for the rest of the exercise
