NTSB pushes back against airworthiness directive on Piper PA-28 spapilot April 2, 2019 Uncategorizedhttp://flash.avweb.com/avwebflash/news/NTSB-Urges-Piper-Spar-AD-Changes-232507-1.htmlPost navigationPrevious Previous post: Triple Tree CookoutNext Next post: Poker Run on April 13th