The U.S. aircraft register, updated daily
Parts

Stage Compressor

No failure report names the stage compressor. 3 FAA approvals let 1 company make a replacement stage compressor, Precision Component Technologies 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 stage compressor and sell it as an approved part for the models named. These are the companies holding such approvals for a stage compressor:

MakerPartReplacesFitsGrantedStatus
Precision Component TechnologiesStage 2 Compressor Stator Retainer Seal PCT9978M69G519978M69G51CFM International CFM56-2, -2-C1, -2-C32011-12-08current
Precision Component TechnologiesStage 3 Compressor Stator Retainer Seal PCT1277M90G021277M90G02CFM International CFM56-2, -2-C1, -2-C32011-12-08current
Precision Component TechnologiesStage 1 Compressor Stator Retainer Seal PCT9978M69G529978M69G52CFM International CFM56-2, -2-C1, -2-C32011-12-08current

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.