The U.S. aircraft register, updated daily
Parts

Tach

0 failure reports named the tach in the last ten years, 10 since 1995. 2 FAA approvals let 2 companies make a replacement tach, Ametek Aerospace and Defense, A Division of Ametek INC. holding the most (1). The reports call it "tach", "tach/generator", "n3 tach".

Reports by year

01234119954231998
Reports by year, as a table
reports
19951
19964
19972
19983

Approved replacement parts 2 parts manufacturer approvals

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

For these models most: Douglas DC-10 (2).

MakerPartReplacesFitsGrantedStatus
Ametek Aerospace and Defense, A Division of Ametek INC.N1 Tach 8TJ141AAG18TJ141AAG1McDonnell Douglas DC-10-402000-10-01current
Ametek AerospaceN1 Tach 8TJ141AAG18TJ141AAG1McDonnell Douglas DC-10-402000-09-30current

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.