#MBB-BK 117

Pull It Up at All Four Corners: FAA Orders a Daily Pre-Flight Check on MBB-BK 117 C-1 Helicopters After a Louver Box Came Loose in Flight

The FAA's new airworthiness directive, published October 9, requires a hand "play check" of an air-conditioning louver box before the first flight of every day on all MBB-BK 117 C-1 helicopters, and lets certificated pilots do it.