The U.S. aircraft register, updated daily
Parts

Compressor Air

No failure report names the compressor air. 10 FAA approvals let 6 companies make a replacement compressor air, Western Filter Corporation holding the most (3).

Approved replacement parts 10 parts manufacturer approvals

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

MakerPartReplacesFitsGrantedStatus
Donaldson Company INCCompressor Air Filter Element WF3362383038142, P-1139Pratt & Whitney Canada Corp. PT6T-3, PT6T-3A, PT6T-3B2025-05-23current
Donaldson Company INCCompressor Air Filter WF3345523029268, Alternate: 3028856, 3029267, P-1018Pratt & Whitney Canada Corp. PT6T-3, PT6T-3A, PT6T-3B2025-05-23current
Global Filtration, INC.Compressor Air Filter Element 3029268GFPratt and Whitney 3029268, 3029267, 3028856Pratt and Whitney Canada PT6T-3, PT6T-3A, PT6T-3B2015-12-14current
Monogram SystemsCompressor-Air 38000-501-20538000-501-205Airbus A380-841, A380-842, A380-8612014-11-30current
Western Filter A Division of Donalson Company INCCompressor Air Filter Element WF3362383038142 P-1139Pratt & Whitney Canada PT6T-3, -3A, -3B2012-04-02current
Western Filter A Division of Donaldson Company INCCompressor Air Filter Element WF3362383038142Pratt & Whitney Canada PT6T-3, -3A, -3B2009-05-26current
Western Filter A Division of Donaldson Company INCCompressor Air Filter Element WF3362383038142, P-1139Pratt & Whitney Canada PT6T-3, -3A, -3B2009-05-26current
Western Filter CorporationCompressor Air Filter Element WF3362383038142Pratt & Whitney Canada PT6T-3, -3A, -3B2008-12-10current
Western Filter CorporationCompressor Air Filter Element WF3362383038142Pratt & Whitney Canada PT6T-3, -3A, -3B2000-12-13current
Western Filter CorporationCompressor Air Filter WF334552Pratt & Whitney Canada 3029268 ALT 3028856, 3029267Pratt & Whitney PT6T-3, -3A, -3B1999-10-15current

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.