Why does the industry not paint all Fuel caps in bright orange for example, that way it will stand out so much better??????
We always put the fuel cap in the passenger footwell during refuelling that way when we forget the pax steps onto it. Has saved us a couple of times.
Painting them though IMHO is a no brainer .....
I lost a cap in my R22 days, bought one of those one fits all caps at the local petrol station and flew it back to base.