This is an actual customer question and my answer about a Falcon 900 API winglet retro fit.
Dear Mark,
Is it normal for outboard slats not to retract fully after winglet installation? Outboard slats do not retract to fully retract position.
Warner, Falcon 900 Operator
Warner,
We get this question a lot.
The quick answer is this forward slat rigging is intentional and is to avoid slat buckling.
The longer answer is API had to take this design action to avoid slat buckling to get the winglet modification STC (Supplemental Type Certificate) approved. So in conjunction with Dassault, API developed the configuration in which the slats are very slightly down-rigged when stowed.
Thanks for the great question.
What Does The 2024 Preowned Business Aircraft Market Look Like?
5 Reasons to Install A 5G Radio Altimeter Filter
What Could Be Causing Your Persistent Fuel Quantity Issues?
Three Modifications And One Troubleshooting Tip To Improve Aircraft Starter Generator Reliability
Troubleshooting Lack Of Transmission Issues In Hawker 800XP HF System