The U.S. aircraft register, updated daily
Parts

Foreign Object

No failure report names the foreign object. 2 FAA approvals let 1 company make a replacement foreign object, Lwam 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 foreign object and sell it as an approved part for the models named. These are the companies holding such approvals for a foreign object:

For these models most: Learjet 35 (2), Learjet 25 (2), Learjet 31 (1), Learjet 24 (1), Learjet 23 (1).

MakerPartReplacesFitsGrantedStatus
LwamForeign Object Damage Kit 35-0000 LWAMmodification partLearjet 23, 24, 251995-01-17current
LwamForeign Object Damage Kit 35-0000Modification PartLearjet 25, 35, 36 Series1994-10-25current

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.