Airworthiness Directive · Amendment 39-21167 · Engine collector/tailpipe/nozzle
GE Aviation Czech s.r.o. Turboprop Engines (Type Certificate Previously Held by WALTER Engines a.s., Walter a.s., and MOTORLET a.s.)
(1) This AD applies to all GE Aviation Czech s.r.o. M601D-11, M601E-11, M601E-11A, M601E-11AS, M601E-11S, M601F, H75-100, H75-200, H80, H80-100, H80-200, H85-100, and H85-200 turboprop engines.
(2) These engines are known to be installed on, but not limited to, Thrush Aircraft, Inc. (formerly Quality, Ayres, Rockwell) S-2R, PZL “Warszawa-Okęcie” PZL-106 (Kruk), Air Tractor AT-300, AT-400 and AT-500 series, Allied Ag Cat Productions, Inc. (formerly Schweizer, Grumman American) G-164 series, RUAG (formerly Dornier) Do 28 and Aircraft Industries (formerly LET) L-410 airplanes.
The FAA is adopting a new airworthiness directive (AD) for all GE Aviation Czech s.r.o. M601D-11, M601E-11, M601E-11A, M601E-11AS, M601E-11S, M601F, H80, H80-100, H80-200, H75-100, H75-200, H85-100, and H85-200 model turboprop engines. This AD was prompted by a review by the manufacturer that identified the possibility of a power turbine (PT) rotor overspeed and the uncontained release of PT blades. This AD requires installing a modified engine outlet system. The FAA is issuing this AD to address the unsafe condition on these products.
(1) After the effective date of this AD, replace the parts listed in Tables 2 through 5 to paragraph (g) of this AD with the parts identified in Planning Information, Paragraph 1.5, Sections I through IV, respectively in GE Aviation Alert Service Bulletin (ASB) ASB-M601E-72-00-00-0070[03], ASB-M601D-72-00-00-0053[03], ASB-M601F-72-00-00-0036[03], ASB-M601T-72-00-00-0029[03], ASB-M601Z-72-00-00-0039[03], ASB-H75-72-00-00-0011[03], ASB-H80-72-00-00-0025[03], and ASB-H85-72-00-00-0007[03] (single document; formatted as service bulletin identifier[revision number]), dated July 24, 2018, using the criteria below, whichever occurs first:
(i) During the next engine shop visit,
(ii) within the compliance time identified in the applicable Airworthiness Limitations Section of the existing maintenance manual for the affected engine model, or
(iii) within the compliance time, in years after the effective date of this AD, shown in Table 1 of this AD.
(2) [Reserved]
(1) Do not install any part with a P/N listed in Tables 2 through 5 to paragraph (g) of this AD on any engine after that engine has been modified as required by paragraph (g)(1) of this AD.
(2) After the effective date of this AD, do not install a part with a P/N listed in Tables 2 through 5 of this AD on any engine manufactured on or after September 1, 2017.
For the purpose of this AD, an engine shop visit is when the engine is overhauled or rebuilt, or the PT is disassembled.
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
