Signal Conditioning
No failure report names the signal conditioning. 9 FAA approvals let 3 companies make a replacement signal conditioning, Thales Communications INC, Aviation Electronics Division holding the most (4).
Approved replacement parts 9 parts manufacturer approvals
A parts manufacturer approval (PMA) lets a company other than the aircraft's maker make a signal conditioning and sell it as an approved part for the models named. These are the companies holding such approvals for a signal conditioning:
For these models most: Boeing 747 (6), Douglas DC-8 (2).
| Maker | Part | Replaces | Fits | Granted | Status |
|---|---|---|---|---|---|
| Thales Communications INC, Aviation Electronics Division | Signal Conditioning Unit (SCU) 56047-01/CI09 | Modification Part | Boeing 747-300 | 2001-08-01 | current |
| Thales Communications INC, Aviation Electronics Division | Signal Conditioning Unit 56047-0103A | Modification Part | McDonnell Douglas DC8-72 | 2001-08-01 | current |
| Thales Communications INC, Aviation Electronics Division | Signal Conditioning Unit (SCU) 56047-0109A (with Software... | Modification Part | Boeing 747-300 | 2001-08-01 | current |
| Thales Communications INC, Aviation Electronics Division | Signal Conditioning Unit (SCU) 56047-0109A (with Software... | Modification Part | Boeing 747-300 | 2001-08-01 | current |
| Racal Avionics INC | Signal Conditioning Unit 56047-0109A (With Software... | Modification Part | Boeing 747-300 | 1998-04-29 | current |
| Racal Avionics INC | Signal Conditioning Unit 56047-0109A (With Software... | Modification Part | Boeing 747-300 | 1998-04-02 | current |
| Racal Avionics INC | Signal Conditioning Unit 56047-0109A (With Software... | Modification Part | Boeing 747-300 | 1997-04-30 | current |
| Racal Avionics INC | Signal Conditioning Unit 56047-0103A | McDonnell Douglas DC-8-72 | 1993-03-25 | current | |
| Eldec Corporation | Signal Conditioning Unit 9-451-03 | Avions Marcel Dassault - Breguet Aviation 9-451-03 | Dassault Aviation Fan Jet Falcon Series G | 1991-08-06 | 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.