The U.S. aircraft register, updated daily
Parts

Series As

No failure report names the series as. 1 FAA approvals let 1 company make a replacement series as, Smith Tubular Systems - Laconia 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 series as and sell it as an approved part for the models named. These are the companies holding such approvals for a series as:

For these models most: Boeing 777 (1).

MakerPartReplacesFitsGrantedStatus
Smith Tubular Systems - Laconia INC'410' SERIES ASSY #24 AS4658 FLANGE TO AS4703 (HYDRAULIC SUPPLY) 114909-8S332W513-8BOEING 777-200 SERIES2006-08-24current

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.