The U.S. aircraft register, updated daily
Parts

Valve Lcs

No failure report names the valve lcs. 2 FAA approvals let 1 company make a replacement valve lcs, L3 Communications Integrated Systems LP holding the most (2).

Approved replacement parts 2 parts manufacturer approvals

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

For these models most: Gulfstream GV-SP G550 (2).

MakerPartReplacesFitsGrantedStatus
L3 Communications Integrated Systems LPValve – LCS 17CD0111-7Modification ArticleGulfstream Aerospace Corp. GV-SP2026-08-25current
L3 Communications Integrated Systems LPValve – LCS 17CD0111-5Modification ArticleGulfstream Aerospace Corp. GV-SP2026-08-25current

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.