A pilots walkround check on the average airliner at a station where engineers do the check shouldnt have anything to find. Should have all been found by the the guy certifying the job as done. Crews do find things , and i for one am glad that another set of eyes is having a look as we are all human and can miss things ! So i disagree with those putting the blame on the crew walkaround as these cowls are very difficult to see unlatched unlike most other types. How many JT9D core cowls got left on runways a few years ago !