[jyl]

This is kind of bizzare. NASA conducts one of the largest surveys of pilots on aviation safety incidents, collects 20,000 responses over 5 years, then refuses to release the results because

"Release of the requested data, which are sensitive and safety-related, could materially affect the public confidence in, and the commercial welfare of, the air carriers and general aviation companies whose pilots participated in the survey."

http://www.washingtonpost.com/wp-dyn/content/article/2007/10/22/AR2007102201954.html

http://thelede.blogs.nytimes.com/2007/10/23/air-safety-cover-up-worse-than-the-data/?hp