The U.S. aircraft register, updated daily
Parts

Ctr In

No failure report names the ctr in. 4 FAA approvals let 1 company make a replacement ctr in, Harper Engineering 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 ctr in and sell it as an approved part for the models named. These are the companies holding such approvals for a ctr in:

For these models most: Boeing 787 Dreamliner (4).

MakerPartReplacesFitsGrantedStatus
Harper EngineeringCTR 42IN TORQUE HC-1028-13HC-1028-13Boeing 787-82021-09-13current
Harper EngineeringCTR 24IN TORQUE TUBE COVER ASSEMBLY HC-1028-11HC-1028-11Boeing 787-8787-9787-102021-09-13current
Harper EngineeringCTR 48IN TORQUE TUBE COVER ASSEMBLY HC-1028-14HC-1028-14Boeing 787-8787-9787-102021-09-13current
Harper EngineeringCTR 36IN TORQUE TUBE COVER ASSEMBLY HC-1028-12HC-1028-12Boeing 787-8787-9787-102021-09-13current

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.