The U.S. aircraft register, updated daily
Parts

Elbow Reducer

No failure report names the elbow reducer. 3 FAA approvals let 1 company make a replacement elbow reducer, Crane Resistoflex holding the most (3).

Approved replacement parts 3 parts manufacturer approvals

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

MakerPartReplacesFitsGrantedStatus
Crane ResistoflexElbow-Reducer R44740P-0806LMAS LS10591-8-6Lockheed L-1011-3851995-10-18current
Crane ResistoflexElbow-Reducer R44740P-0608LMAS LS10591-6-8Lockheed L-1011-3851995-10-18current
Crane ResistoflexElbow-Reducer R44740P-0604LMAS LS10591-6-4Lockheed L-1011-3851995-10-18current

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.