Sadly a silar thing happened at Hatfield in the late 80's resulting in a fatality when one of the engineers was ingested into a 502. Shortly after the incident gaurds were placed in front of all engines prior to to ANY engine run. That was a manufacturers response, but today I dont see any similar device used on any runs perfomed when either coming out of heavy maintenance. It takes the loss of a person to ram home the effect, but of course it's too late. Effective and training and confidence of actions plus situational awareness are key to being safe if there is no mechanical means of ingestion prevention. My sympathies to the poor guys family.