The U.S. aircraft register, updated daily
Parts

Foam Layer

No failure report names the foam layer. 5 FAA approvals let 1 company make a replacement foam layer, L-3 Communications Integrated Systems holding the most (5).

Approved replacement parts 5 parts manufacturer approvals

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

For these models most: Air Tractor Inc AT-802 (5).

MakerPartReplacesFitsGrantedStatus
L-3 Communications Integrated SystemsFOAM-LAYER 1 L0008‐1Modification Part Air Tractor Inc. AT‐8022024-01-29current
L-3 Communications Integrated SystemsFOAM-LAYER 4 L0008‐4Modification Part Air Tractor Inc. AT‐8022024-01-29current
L-3 Communications Integrated SystemsFOAM-LAYER 2 L0008‐2Modification Part Air Tractor Inc. AT‐8022024-01-29current
L-3 Communications Integrated SystemsFOAM-LAYER 3 L0008‐3Modification Part Air Tractor Inc. AT‐8022024-01-29current
L-3 Communications Integrated SystemsFOAM-LAYER 5 L0008‐5Modification Part Air Tractor Inc. AT‐8022024-01-29current

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.