FAA suggests MU-2B wing attach bolts be inspected

AINonline
October 3, 2007, 9:29 AM

A special airworthiness information bulletin recommends that operators of Mitsubishi MU-2Bs comply with recently issued service bulletins (SBs) for a one-time inspection to check for corrosion and the proper torque of wing attach barrel nuts and bolts. The SBs were based on the discovery of a fractured barrel nut during a routine inspection. Although no other fractures have been found, the FAA says that a follow-on field survey uncovered incorrect torque of the attachment bolt “on a significant number of inspected aircraft.”

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