Triple Inertial
No failure report names the triple inertial. 4 FAA approvals let 1 company make a replacement triple inertial, Litton Systems INC holding the most (4).
Approved replacement parts 4 parts manufacturer approvals
A parts manufacturer approval (PMA) lets a company other than the aircraft's maker make a triple inertial and sell it as an approved part for the models named. These are the companies holding such approvals for a triple inertial:
For these models most: Mcdonnell Douglas DC-10 (2), Boeing 747 (1), Boeing 707 (1).
| Maker | Part | Replaces | Fits | Granted | Status |
|---|---|---|---|---|---|
| Litton Systems INC | Triple Inertial & Dual Global Positioning Sensor (GPS)... LTN-92 / LTN-2001 | Modification Part | Boeing 707-300 Series | 1996-08-29 | current |
| Litton Systems INC | Triple Inertial & Dual Global Positioning Sensor (GPS)... LTN-92 / LTN-2001 | Modification Part | Boeing 747-200B Series | 1996-08-29 | current |
| Litton Systems INC | Triple Inertial Navigation System - LTN-92 | Modification Part | McDonnell Douglas DC-10-30 | 1996-08-29 | current |
| Litton Systems INC | Triple Inertial Navigation System LTN-92 | Modification Part | McDonnell Douglas DC-10-30 | 1996-08-29 | 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.