AD NUMBER: 2011-19-03
MANUFACTURER: General Electric Company (GE)
CT7-8, CT7-8A, CT7-8A1, CT7-8E, and CT7-8F5 Turboshaft
Engines
SUBJECT: Airworthiness Directive 2011-19-03
ACTION: Final rule
SUMMARY: This AD was prompted by four reports of unrecoverable engine stalls, during hover in a left-roll attitude. This AD requires the installation of an accessory gearbox (AGB) axis-A oil slinger nut to the axis-A shaft assembly. The FAA is issuing this AD to prevent an unrecoverable engine stall, leading to a helicopter forced landing or accident.
DATES: This AD is effective November 9, 2011