The U.S. aircraft register, updated daily
Parts

Aluminum Wing

No failure report names the aluminum wing. 1 FAA approvals let 1 company make a replacement aluminum wing, Milman Engineering INC holding the most (1).

Approved replacement parts 1 parts manufacturer approvals

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

For these models most: Champion 7 Citabria and Champ (1), American Champion Aircraft 7 Citabria and Champ (1), Aeronca S7 (1).

MakerPartReplacesFitsGrantedStatus
Milman Engineering INCAluminum Wing Spars UnknownModification PartAmerican Champion 7AC, 7ACA, S7AC1992-03-02current

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.