The U.S. aircraft register, updated daily
Parts · Cabin, seats and restraints

Retainer Cup

4 failure reports named the retainer cup in the last ten years, 6 since 2000, most often on the Boeing 737; the condition most often found was "loose". 3 FAA approvals let 2 companies make a replacement retainer cup, Nasco Aircraft Brake INC holding the most (2).

Reports by year

001221200011122023
Reports by year, as a table
reports
20001
20011
20211
20221
20232

Which system the reports file it under last ten years

Reports by system, as a table
reports
Cabin, seats and restraints4

Models most often reporting it last ten years

Models most reported, as a table
reports
Boeing 7374

How it failed the condition found, last ten years

loose2out of adjust1out of tolerance1
Conditions found, as a table
reports
loose2
out of adjust1
out of tolerance1

Approved replacement parts 3 parts manufacturer approvals

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

For these models most: Boeing 737 (1), Airbus A300 (1).

MakerPartReplacesFitsGrantedStatus
Nasco Aircraft Brake INCRetainer Cup 73730382603038Airbus A300, A300, Model B4-1032014-10-08current
Nasco Aircraft Brake INCRetainer Cup 73730382603038Boeing 737-100 Series, 737-200 Series2014-04-08current
Turbine Kinetics INC, Subsidiary of Heico CORPRetainer Cup KT68816106881610General Electric CF6-80A, -80A1, -80A22006-06-12current

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.