The U.S. aircraft register, updated daily
Parts

Mark Annunciator

No failure report names the mark annunciator. 2 FAA approvals let 2 companies make a replacement mark annunciator, Jetech LLC holding the most (1).

Approved replacement parts 2 parts manufacturer approvals

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

For these models most: Cessna S550 (2), Cessna 560 Citation V, Ultra, Encore and Excel (2).

MakerPartReplacesFitsGrantedStatus
Jettech, LLCMARK V Annunciator 101-2000-010Modification ArticleTextron Aviation Inc 500, 550, S5502024-04-05current
Jetech LLCMARK V Annunciator 101-2000-010Modification PartTextron Aviation Inc. 500, 550, S5502022-08-16current

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.