Dc Ammeter
No failure report names the dc ammeter. 3 FAA approvals let 2 companies make a replacement dc ammeter, Ametek Aerospace holding the most (2).
Approved replacement parts 3 parts manufacturer approvals
A parts manufacturer approval (PMA) lets a company other than the aircraft's maker make a dc ammeter and sell it as an approved part for the models named. These are the companies holding such approvals for a dc ammeter:
For these models most: Boeing 747 (2), Cessna 560 Citation V, Ultra, Encore and Excel (1), Cessna 550 Citation II (1), Cessna 500 Citation I (1).
| Maker | Part | Replaces | Fits | Granted | Status |
|---|---|---|---|---|---|
| Lewis Engineering CO, Coltec Industries | DC Ammeter Lewis 153LA30E | Cessna C662501-0102 | Cessna 550, 500, 553 | 1997-11-20 | current |
| Ametek Aerospace | DC Ammeter 260457 | Boeing 60B00111-2 | Boeing 747-100, -200, -300 | 1993-11-18 | current |
| Ametek Aerospace | DC Ammeter 260457 | Boeing 60B00111-2 | Boeing 747-100, -200, -300 | 1993-11-18 | 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.