The U.S. aircraft register, updated daily
Parts

Retainer Block

No failure report names the retainer block. 6 FAA approvals let 5 companies make a replacement retainer block, Airborne Maintenance & Engineering Services holding the most (2).

Approved replacement parts 6 parts manufacturer approvals

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

For these models most: Boeing 737 (5), Embraer ERJ 190 E190 and E195 (1).

MakerPartReplacesFitsGrantedStatus
Safran Cabin INC.RETAINER BLOCK ASSY H042131-507H042131-507EMBRAER S.A. ERJ 190-300, ERJ 190-4002025-08-13current
Airborne Maintenance & Engineering ServicesRetainer Block 007-02202-1007-02202-1Boeing 737-400/7002022-05-12current
Airborne Maintenance & Engineering ServicesRetainer Block 007-02202-1007-02202-1Boeing 737-300/4002018-05-21current
Greenpoint Technologies INCRetainer Block G80192034-1G80192034-1Boeing 737-700 Series2015-03-15current
Greenpoint Products & ServicesRetainer Block G80192034-1G80192034-1Boeing 737-700 Series2010-12-01current
Asap CorporationRetainer Block G80192034-1G80192034-1Boeing 737-700IGW2007-10-22current

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.