The U.S. aircraft register, updated daily
Parts

Transducer Oil

No failure report names the transducer oil. 1 FAA approvals let 1 company make a replacement transducer oil, Edcliff Instruments holding the most (1).

Approved replacement parts 1 parts manufacturer approvals

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

For these models most: Cessna S550 (1), Cessna 551 (1), Cessna 550 Citation II (1), Cessna 501 Citation I/SP (1), Cessna 500 Citation I (1).

MakerPartReplacesFitsGrantedStatus
Edcliff InstrumentsTransducer Oil Pressure 126855Cessna 9912164-1Cessna 500, 501, 5501995-07-24current

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.