Parts

Sponge

No failure report names the sponge. 2 FAA approvals let 2 companies make a replacement sponge, Adpma LLC holding the most (1).

Approved replacement parts 2 parts manufacturer approvals

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

Adpma LLC 1Adpma 1

For these models most: Boeing 777 (1), Boeing 767 (1), Boeing 757 (1), Boeing 747 (1), Boeing 737 (1), Airbus A321 (1), Airbus A320 (1), Airbus A319 (1).

Maker	Part	Replaces	Fits	Granted	Status
Adpma	Sponge, Rubber ADP38039-229-1	15800-229-1	Airbus SAS A320 Model -251N, A320 Model -271N,...	2024-12-10	current
Adpma LLC	Sponge, Rubber ADP38039-229-1	15800-229-1	The Boeing Company 737-700 Series, 737-800 Series,...	2023-07-11	current

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.