The U.S. aircraft register, updated daily
Parts

Crew Step

No failure report names the crew step. 3 FAA approvals let 1 company make a replacement crew step, Aerometals holding the most (3).

Approved replacement parts 3 parts manufacturer approvals

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

For these models most: Md Helicopters Inc 500 (3), Md Helicopters Llc 369 (2), Hughes 369 500 series helicopters (2), Md Helicopters Inc 369 (1).

MakerPartReplacesFitsGrantedStatus
AerometalsCrew Step Assy 369X292034369D292034MDHI Hughes) (369HM, 369HS, 369HE2015-01-21current
AerometalsCrew Step Assy 369X292034369H6538MDHI Hughes) (369HM, 369HS, 369HE2015-01-21current
AerometalsCrew Step Assembly 369X292034MDHC (Hughes) 369D292034 369H6538MD Helicopters, Inc. MDHI) (369HM S/N 0232M-SUBS, 369HS...1998-11-16current

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.