The U.S. aircraft register, updated daily
Parts

Flow Balancing

No failure report names the flow balancing. 2 FAA approvals let 1 company make a replacement flow balancing, Kulite Semiconductor Prod INC holding the most (2).

Approved replacement parts 2 parts manufacturer approvals

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

For these models most: Airbus A340 (2).

MakerPartReplacesFitsGrantedStatus
Kulite Semiconductor Prod INCFlow Balancing Differential Pressure Sensor APTE-323B-1000-(-0.5 to +4D)92238B030000Airbus A340- 500/ 6002006-05-21current
Kulite Semiconductor Prod INCFlow Balancing Differential Pressure Sensor APTE-323A-1000- (-0.5 to +4D)92238B020000Airbus A340- 500/ 6002004-11-14current

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.