The U.S. aircraft register, updated daily
Parts

Shell Bottom

No failure report names the shell bottom. 5 FAA approvals let 2 companies make a replacement shell bottom, Aero Design INC holding the most (4).

Approved replacement parts 5 parts manufacturer approvals

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

For these models most: Boeing 767 (5), Boeing 757 (5).

MakerPartReplacesFitsGrantedStatus
Aero Design INCShell-Bottom AD-285N0414-119BAE Systems P/N 285N0414-119Boeing 757-200 Series, 757-200PF Series,...2014-10-30current
Aero Design INCShell-Bottom AD-285N0414-109BAE Systems P/N 285N0414-109Boeing 757-200 Series, 757-200PF Series,...2014-10-30current
Aero Design INCShell-Bottom AD-285N0414-101BAE Systems P/N 285N0414-101Boeing 757-200 Series, 757-200PF Series,...2014-10-30current
Aero Design INCShell-Bottom AD-285N0414-105BAE Systems P/N 285N0414-105Boeing 757-200 Series, 757-200PF Series,...2013-09-26current
Gemini EngineeringSHELL-BOTTOM 285N0414-105285N0414-105Boeing 757-200 Series, 767-200 Series,...2006-07-30current

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.