B737 MAX Series Undifferentiated
Maintenance Airframe; Maintenance Powerplant
Workload; Training / Qualification; Communication Breakdown; Time Pressure
Aircraft Equipment Problem Less Severe; Deviation / Discrepancy - Procedural Maintenance; Deviation / Discrepancy - Procedural Published Material / Policy
General Maintenance Action
Aircraft; Human Factors; Manuals; Procedure
I was working on my Aircraft X on [Date]; when I started my work the day was windy above 40 knots so my  screen inspection was postponed. I was then helping my partner on the service check inspection assigned to him. Later on in the night around the wind slowed down. I had already picked up my job packings (seals) and a tire pressure gauge. When I started to set up to do my job card my partner went to stores to get me a torque wrench. I completed the TGB (Transfer Gear Box) inspection screens for both Engine 1 and Engine 2. Two coworkers [Name] and [Name1] preformed both 1 and 2 engine run. I preformed leak check inspections on both engines; I found no leaks. I heard that the aircraft I was working on had an oil leak. I don't know if the oil leak had anything to do with the work I preformed on the engines. I don't believe I properly documented the inspection for Engine 1 scavenge screen. This is my first time doing this job; I believe my work was preformed good; although my paper work was not documented properly; at the time it seamed that I needed to preform both engine inspections.
Assigned chip detector card for #2 Engine. Later that night AMT (Aviation Maintenance Technician) came to me for leak check of both engines. I question as to why are we leak checking both engines when only #2 Engine was assigned. AMT inform me he also did the #1 Engine. He leaked check both engines and I informed him of documenting #1 Engine's work. Work card changed to work card and does not indicate on the card left or right engine; making it confusing for the AMT. I did not follow up with the AMT to verified #1 Engine's chip detector was done.On paperwork specifically state which engine requires the work to be accomplished.
Technicians reported an oil leak after routine engine service and determined that both engines had work done when only one engine had documentation for the work.