MANUFACTURER: Honeywell International Inc.
TPE331-10 and TPE331-11 Series Turboprop Engines SUBJECT: Airworthiness Directive 2009-17-05
Summary: This AD
requires removing certain first stage turbine disks from service.
This AD results from a report of an uncontained failure of a first
stage turbine disk that had a metallurgical defect. We are issuing
this AD to prevent uncontained failure of the first stage turbine
disk and damage to the airplane.