This is an actual customer question and my answer about a Falcon 900 API winglet retro fit.
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
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.
7 Reasons Why You Need An Aircraft Broker When Buying Or Selling A Private Jet
The FAA Updates 5G Guidance In Safety Alerts For Operators
Do I Need An Avionics Service Plan During Heavy Maintenance?
Optimizing Aircraft Battery Performance: The Impact Of Temperature On Storage
Top Eight Questions Customers Have About Aircraft Paint