This document specifies the requirements for folded fiberglass mat (FFM) and joining panels for airfield pavement repair. Fiberglass mats are used as foreign object debris (FOD) covers, for crushed-stone crater repairs as part of Air Force\'s airfield damage repair (ADR) procedures. Mat assemblies are packaged with two folding fiberglass mats and four joining panels together. Note this specification eliminates \"training mats\" and modifies the \"operational mats\" defined in the previous specification. Folded fiberglass mat (FFM)/fiberglass reinforced plastic (FRP) foreign object damage (FOD) covers are suitable only for fighter aircraft and C-130 operations. These FOD covers are not approved for C-17, C-5 Galaxy, C-141 Starlifter, KC-10 Extender, and KC-135 Stratotanker operations.