The U.S. aircraft register, updated daily
Parts

Stub Wing

No failure report names the stub wing. 2 FAA approvals let 1 company make a replacement stub wing, Spoilers INC 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 stub wing and sell it as an approved part for the models named. These are the companies holding such approvals for a stub wing:

For these models most: Cessna 421 Golden Eagle (2).

MakerPartReplacesFitsGrantedStatus
Spoilers INCStub Wing Access Panel 6031Modification PartCessna 421B2014-05-15current
Spoilers INCStub Wing Access Doubler Assembly 6029Modification PartCessna 421B2014-05-15current

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.