The U.S. aircraft register, updated daily
Parts

Narrow Back

No failure report names the narrow back. 2 FAA approvals let 2 companies make a replacement narrow back, Sedia INC holding the most (1).

Approved replacement parts 2 parts manufacturer approvals

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

For these models most: Mcdonnell Douglas DC-9 (1), Mcdonnell Douglas Aircraft Co MD-88 (1).

MakerPartReplacesFitsGrantedStatus
Sedia INCNarrow Back Cover 10495Modification PartMcDonnell Douglas DC-9-81 (MD-81), DC-9-82 (MD-82), MD-882005-01-31current
Aircraft Interior Design INCNarrow Back foam Cushion 98808-1NFairchild/Burns 41889003Boeing B737 series2000-11-21current

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.