In answer to the shadow. You donīt have to go to the far east to experience grave maintenance errors, we can do just as well here in europe. A few years ago a British Midland B737 takeing off from East Midlands
had to shut down 1 engine due to dropping oil qty, the crew elected to divert to Luton, and during approach the other engine started loosing oil aswell, the landing was uneventful, but during the subsequent investigation it was found that both engines hand crancking pad covers had not been installed after a boroscope inspection.