The U.S. aircraft register, updated daily
Parts

Bulkhead Wall

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

For these models most: Sikorsky S-76 (2).

MakerPartReplacesFitsGrantedStatus
Keystone Helicopter CorporationLower Aft Bulkhead Wall 04076A20J200Modification PartSikorsky S76A, B, C2005-05-30current
Keystone Helicopter CorporationLower Aft Bulkhead Wall 95-076-201-100Modification PartSikorsky S76A, S76B, S76C2002-09-26current

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.