What was found
(CAN) WHILE ATTEMPTING TO RIG A NACELLE VENT DOOR, IT WAS DISCOVERED THAT THE ACTUATOR HAD A DIFFERENT GEAR RATIO THAN IS REQUIRED. INVESTIGATION REVEALED THAT THE ACTUATOR, PN 85891-02, CAME FROM THE MFG WITH DIFFERENT MODEL NUMBERS THAT DENOTE DIFFERENT GEAR RATIOS, MODEL 550FJ IS 25:1, MODEL 550CT IS 12.5:1. THE OFFENDING ACTUATOR HAD A DATA PLATE THAT DID NOT INCLUDE A MODEL NUMBER, JUST PN AND S/N. THE INCORRECT MODEL ACTUATOR WAS THE ONLY ONE IN STOCK AND HAS BEEN QUARANTINED AND IS SLATED FOR SCRAP.