An audit of A320 maintenance records found that a #1 engine; recently overhauled and installed in January 2008; did not have the required repetitive borescope inspections accomplished at 1600 flight cycles.

Narrative

Prior to installation of the No. 1 Engine; on an A320 aircraft; the time controlled borescope inspection was not set-up to track repetitive 1600 (FC) flight cycles borescope inspection. This engine did operate 230 flight cycles beyond the required (allowed) maintenance planning document (MPD) 1600 FC limiter for this inspection. According to maintenance tracking system; this engine was installed in January 2008. It is not known who; or what; caused the oversight of this inspection being left off the load sheet for this engine. The aircraft was stopped; the Borescope accomplished and the engine serial number (S/N) added to the maintenance traching for this task.Through an audit of the A320 maintenance records; it was found that this flight cycle sensitive task was not attached or tracking this engine. A review of the maintenance tracking system revealed that this engine had accumulated 1830 FC's; since the engine was overhauled and installed. (This task has a 1600 FC MPD limit).Providing greater records keeping; training; auditing; oversight and routine surveillance of the aircrafts maintenance records would help prevent a recurrence of this situation.