AD NUMBER: 2005-13-07 MANUFACTURER: Honeywell SUBJECT: Airworthiness Directive 2005-13-07 SUMMARY: The FAA is adopting a new airworthiness
directive (AD) for Honeywell International Inc. (formerly
AlliedSignal Inc. and Garrett Turbine Engine Co.) TFE731-2 and -3
series turbofan engines with certain part numbers (P/Ns) and serial
numbers (SNs) of low-pressure (LP) 1st and 2nd stage turbine rotor
discs initially installed.
This AD requires replacement of those LP 1st and 2nd stage
turbine rotor discs. This AD results from a report of an
uncontained failure of an LP 2nd stage turbine rotor disc that
resulted in an in-flight engine shutdown. We are issuing this AD to
prevent LP turbine rotor disk separation, which could result in an
uncontained engine failure and damage to the airplane.