The U.S. aircraft register, updated daily
Parts

Attachment Block

No failure report names the attachment block. 9 FAA approvals let 4 companies make a replacement attachment block, Aar Pma Products holding the most (4).

Approved replacement parts 9 parts manufacturer approvals

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

For these models most: Boeing 737 (8), Sikorsky S-70 (1).

MakerPartReplacesFitsGrantedStatus
Aviation Technical Services (Ats)Attachment Block Assy. C23302-351-007ATSMROC23302-351-007The Boeing Company 737-300 Series, 737-500 Series,...2018-03-29current
Aviation Technical Services (Ats)Attachment Block Assy. C23302-341-003ATSMROC23302-341-003The Boeing Company 737-300 Series, 737-500 Series,...2018-03-29current
Wencor LLC (Formerly Dixie Aerospace LLC)Attachment Block C23102-795-001AARPremium Aircraft Interiors C23102-795-001Boeing 737-600, -700, -8002011-06-20current
Wencor LLC (Formerly Dixie Aerospace LLC)Attachment Block C23502-473-001AARPremium Aircraft Interiors C23502-473-001Boeing 737-400 series, 737-600, -7002011-06-20current
Aar Pma ProductsAttachment Block C23102-795-001AARC23102-795-001Boeing 737-600 Series 737-700 Series...2007-07-18current
Aar Pma ProductsAttachment Block C23502-473-001AARC23502-473-001Boeing 737-600 Series 737-700 Series...2007-07-18current
Aar Pma ProductsAttachment Block C23102-795-001C23102-795-001AARBoeing 737-600 Series 737-700 Series...2007-05-28current
Aar Pma ProductsAttachment Block C23502-473-001C23502-473-001AARBoeing 737-600 Series 737-700 Series...2007-05-28current
Keystone Helicopter CorporationAttachment Block Step Support Rod Assembly 04070-10A203Modification PartSikorsky S-70C2005-03-04current

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.