AD NUMBER: 2008-06-19
SUBJECT: Airworthiness Directive 2008-06-19
SUMMARY: The FAA is adopting a new airworthiness
directive (AD) for Honeywell International Inc. ATF3-6 and ATF3-6A
series turbofan engines equipped with a certain part number (P/N)
low pressure compressor (LPC) aft shaft.
This AD requires removing from service those LPC aft shafts and
installing a serviceable LPC aft shaft.
This AD results from reports of eight LPC aft shafts found
cracked during fluorescent penetrant inspection (FPI).
We are issuing this AD to preventuncoupling and overspeed of the
low pressure turbine, which could result in uncontained engine
failure and damage to the airplane.