Optional Maximum
No failure report names the optional maximum. 2 FAA approvals let 1 company make a replacement optional maximum, Sierra Industries, LTD. 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 optional maximum and sell it as an approved part for the models named. These are the companies holding such approvals for a optional maximum:
For these models most: Cessna 500 Citation I (2).
| Maker | Part | Replaces | Fits | Granted | Status |
|---|---|---|---|---|---|
| Sierra Industries, LTD. | Optional Maximum Zero Fuel Weight Increase Kit As specified by drawings... | Modification Part | Cessna 500 | 2006-06-22 | current |
| Sierra Industries, LTD. | Optional Maximum Zero Fuel Weight Increase Kit As specified by drawings... | Modification Part | Cessna 500 | 2002-04-10 | 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.