N908VJ

failure of Turk Hava Yollari maintenance and inspection personnel to perform a proper inspection of a 7th stage high compressor disc, thus allowing the detectable crack to grow to a length at which the disc ruptured, under normal operating conditions, propelling engine fragments into the fuselage; the fragments severed the right engine main fuel line, which resulted in a fire that rapidly engulfed the cabin area. The lack of an adequate recordkeeping system and the failure to use 'process sheets' to document the step-by-step overhaul/inspection procedures contributed to the failure to detect the crack and, thus, to the accident.