The U.S. aircraft register, updated daily
Parts

Wing Slotted

No failure report names the wing slotted. 2 FAA approvals let 1 company make a replacement wing slotted, Dakota Cub Aircraft holding the most (2).

Approved replacement parts 2 parts manufacturer approvals

A parts manufacturer approval (PMA) lets a company other than the aircraft's maker make a wing slotted and sell it as an approved part for the models named. These are the companies holding such approvals for a wing slotted:

For these models most: Piper PA-14 (2), Piper PA-12 Super Cruiser (2).

MakerPartReplacesFitsGrantedStatus
Dakota Cub AircraftWing Assy- Slotted Left DC14394-Ext-Slot-PA12-LModification PartPiper PA-12, PA-12S, PA-142016-05-01current
Dakota Cub AircraftWing Assy- Slotted Right DC14394-Ext-Slot-PA12-RModification PartPiper PA-12, PA-12S, PA-142016-05-01current

Sources: the FAA's service difficulty reports since 1995 (a report is a part that failed and was fixed, as filed by an airline, repair station or owner; the count shows reporting as much as reliability) and the parts manufacturer approvals in the FAA's Dynamic Regulatory System. The part name is the reporters' and the approval holders' own words, reduced to the first plain words so that spellings meet.