S-92 Main Gearbox Under Scrutiny In Cougar Crash

摘要

Did the main gear box do it? That's what investigators are asking after the fatal ditching of a Cougar Helicopters' Sikorsky S-92A (CGZCH) on March 12. Here's what's known. When Cougar's pilots made their mayday call on the morning of March 12, they told air traffic control that they had no oil pressure in their main rotor gear box (MGB). The helicopter, named "Jeanne DArc Breeze," turned back to St. )ohn's Newfoundland, but ending up ditching 40 miles east in the Atlantic Ocean 10 minutes later. The condition of the submerged wreckage, with its tail boom broken off and lying beside the main fuselage, "is indicative indeed [that] this was not a controlled ditching in the watep' said former TSB investigator Nick Stoss in an interview with CBC News.