The U.S. aircraft register, updated daily
Parts

Locking Cap

No failure report names the locking cap. 4 FAA approvals let 3 companies make a replacement locking cap, Parker Hannifin CORP holding the most (2).

Approved replacement parts 4 parts manufacturer approvals

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

For these models most: Messerschmitt-Boelkow-Blohm BO-105 (1), Embraer EMB-550 Praetor 600 and Legacy 500 (1), Dassault FALCON 2000 (1), Airbus A321 (1), Airbus A320 (1).

MakerPartReplacesFitsGrantedStatus
Turbine Kinetics INC, A Heico Aerospace CompanyLocking Cap ABS0738-2-6KTAirbus P/N: ABS0738-2-6Airbus SAS A320-251N, A320-271N, A321-272N2021-10-05current
Parker Hannifin CORPLocking Cap Ship Set 3931439314Embraer EMB-5502015-01-06current
Parker Hannifin CORPLocking Cap Assembly 457-866-1-1457-866-1-1Dassault Falcon 20002011-08-09current
Shaw Aero Devices INC (Sadi)Locking Cap and Adapter 431-414-01105-83510Eurocopter Deutschland BO-105S2004-05-06current

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.