Maintenance technicians serviced aircraft IDG with possible contaminated fluid.
Synopsis
Maintenance technicians serviced aircraft IDG with possible contaminated fluid.
Narrative
Two other mechanics and I serviced IDGs (integrated drive generator) IAW (In Accordance With) the PS (Periodic Service Check) check because it was low. We used the correct browser and serviced it properly IAW the manual; we all double checked the work to make sure it was serviced properly. During flight the flight crew got a message saying the IDG temperature was too high. After landing the mechanics began troubleshooting the problem and saw a reddish color fluid; they believe its X but we don't have a X browser we only have a green browser (Y) and a purple browser (skydrol). When we serviced the IDG we opened up the lid of the browser and made sure it was [the] right fluid. As of right now there is a sample of the fluid in the IDG that was sent out to be inspected for any contaminates.Cause: Someone somewhere most likely serviced IDGs with a contaminated browser or serviced the IDG with a browser that said Y but had skydrol or X inside.Suggestions: Opening and emptying the browser to see the bottom half if there's any contaminates inside.
Second reporter narrative
During the PS (Periodic Service Check) check of Aircraft X; we found both engines IDG (integrated drive generator) oil level below limits. We acquired the correct oil servicing unit and adapters; visually checked the content within the unit with our best ability. Then my 2 co-workers serviced one IDG each under my observation; afterwards we both visually checked the oil level being within the limits after servicing and oil in the sight glass looked normal; all maintenance actions are within the compliance of required AMM. The plane flew the following day; and I was made aware that both IDG over heated with possible contamination noticed after the flight. I'm willing to cooperate with any investigation that may occur to bring this to a close and hopefully make improve for future maintenance.
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Source: NASA Aviation Safety Reporting System (public domain). Reports are voluntary submissions and are not verified by NASA.