The U.S. aircraft register, updated daily
Parts

Base Rail

No failure report names the base rail. 4 FAA approvals let 1 company make a replacement base rail, Asap Corporation holding the most (4).

Approved replacement parts 4 parts manufacturer approvals

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

For these models most: Boeing 757 (4).

MakerPartReplacesFitsGrantedStatus
Asap CorporationBase Rail 706-12261-29706-12261-29Boeing 757-2002007-11-26current
Asap CorporationBase Rail 706-12251-48706-12251-48Boeing 757-200) (757-2002007-11-26current
Asap CorporationBase Rail 706-12261-30706-12261-30Boeing 757-2002007-11-26current
Asap CorporationBase Rail 706-12251-47706-12251-47Boeing 757-2002007-11-26current

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.