Airworthiness Directive · Amendment 39-18458 · GE Aviation Czech s.r.o. Turboprop Engines
GE Aviation Czech s.r.o. Turboprop Engines
Superseded. A later AD replaced this one: AD 2020-15-03. Comply with the one in force.
This AD applies to GE Aviation Czech s.r.o M601E-11 turboprop engine models with engine power turbine (PT) disk, part number 3220.6 and serial number EE8, EF8, or KR5, installed.
We are adopting a new airworthiness directive (AD) for certain GE Aviation Czech s.r.o. M601E-11 turboprop engines. This AD requires inspection of the engine power turbine (PT) disk and, if found damaged, its replacement with a part eligible for installation. This AD was prompted by discovery of damage to certain engine PT disks during engine shop visits. We are issuing this AD to prevent failure of the engine PT disk, which could result in release of high-energy debris, damage to the engine, and reduced control of the airplane.
(1) Within 90 days after the effective date of this AD, perform visual, dimensional, and fluorescent penetrant inspections of the engine PT disk. Use Appendix B, paragraph 5 of GE Aviation Czech s.r.o. Alert Service Bulletin (ASB) No. SB-2016-72-50-00-1/00, dated January 21, 2016, to do the inspections.
(2) If the engine PT disk fails to meet the acceptance criteria in Appendix B, paragraph 5 of GE Aviation Czech s.r.o. ASB No. SB-2016-72-50-00-1/00, dated January 21, 2016, replace the PT disk with a part eligible for installation.
After the effective date of this AD:
(1) Do not operate any engine with a PT disk serial number listed in paragraph (c) of this AD, unless the disk was inspected per the requirements of paragraph (e) of this AD; and
(2) Do not install a PT disk that does not meet the acceptance criteria in Appendix B, paragraph 5 of GE Aviation Czech s.r.o. ASB No. SB-2016-72-50-00-1/00, dated January 21, 2016, onto any engine.
The aircraft, engines and makers this AD names, by the model designations in its text. A model listed here may still be outside the AD's serial ranges.
Engines
