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Thursday, March 26, 2009

CV-22 and MV-22 Grounding

According to a NAVAIR bulletin, potential loose bolts have temporarily grounded all CV-22s and MV-22 Osprey until inspections can be conducted. The issue was discovered this weekend when VMM-266 pilots in noticed unusual vibrations and noises. Upon mechanic inspection, and according to the bulletin, four bolts had separated from a stationary swashplate trunnion and its gimbal ring on the drive tube. After separating from the gimbal ring, the trunnion and swashplate caused minor damage to the drive tube's pitch links and spinner support. New inspection procedures for certain components in the proprotor assembly have been issued. The cause of the loose bolt is under investigated. As of this writing, 77 of the 84 Ospreys were inspected. Of those, four had loose bolts. For related news

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