The U.S. aircraft register, updated daily
Parts

Winglet Modification

No failure report names the winglet modification. 2 FAA approvals let 1 company make a replacement winglet modification, Aviation Partners Boeing 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 winglet modification and sell it as an approved part for the models named. These are the companies holding such approvals for a winglet modification:

For these models most: Boeing 767 (2).

MakerPartReplacesFitsGrantedStatus
Aviation Partners BoeingWinglet Modification Kit 767-3000-2Modification PartBoeing 767-3002009-02-16current
Aviation Partners BoeingWinglet Modification Kit 767-3000-1Modification PartBoeing 767-3002008-10-19current

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.