The U.S. aircraft register, updated daily
Parts

Nacelle Modification

No failure report names the nacelle modification. 1 FAA approvals let 1 company make a replacement nacelle modification, Quiet Technology Aerospace holding the most (1).

Approved replacement parts 1 parts manufacturer approvals

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

For these models most: Douglas DC-8 (1).

MakerPartReplacesFitsGrantedStatus
Quiet Technology AerospaceNacelle Modification Repair QN-DC8-2026Burbank Aeronautical Corporation (BAC) Stage 2...McDonnell Douglas DC-8-51, -52, -531997-10-16current

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.