Airworthiness Directive · Amendment 39-12977 · Honeywell International Inc. TPE331-3, -5, -6, -8, -10, and -11 Series Turboprop and TSE331-3 Series Turboshaft Engines
Honeywell International Inc. TPE331-3, -5, -6, -8, -10, and -11 Series Turboprop and TSE331-3 Series Turboshaft Engines
This airworthiness directive (AD) is applicable to Honeywell International Inc. (formerly AlliedSignal Inc., Garrett Turbine Engine Company and AiResearch Manufacturing Company of Arizona) TPE331-3, -5, -6, -8, -10, and -11 series turboprop and TSE331-3 series turboshaft engines. These engines are installed on, but not limited to Ayres S-2R series; Beech 18 and 45 series and Models JRB-6, 3N, 3NM, 3TM, and B100; Cessna Model 441; Construcciones Aeronauticas, S.A. (CASA) C-212 series; De Havilland DH 104 series 7AXC (Dove); Dornier 228 series; Fairchild SA226 and SA227 series (Swearingen Merlin and Metro series); Grumman American G-164 series; Jetstream 3101; Mitsubishi MU-2B series (MU-2 series); Prop-Jets, Inc. Model 400; Rockwell Commander S-2R; Shorts Brothers and Harland, Ltd. SC7 (Skyvan); Pilatus PC-6 series (Fairchild Porter and Peacemaker); and Schweizer G-164 series; and Twin Commander Aircraft Corp. (Jetprop Commander) Models 695 and 695A airplanes; and Sikorsky S-55 series (Helitec Corp. S55T) helicopters.
This amendment adopts a new airworthiness directive (AD), that is applicable to Honeywell International Inc. (formerly AlliedSignal Inc., Garrett Turbine Engine Company and AiResearch Manufacturing Company of Arizona) TPE331-3, -5, -6, -8, -10, and -11 series turboprop and TSE331-3 series turboshaft engines. This amendment requires removing weld repaired first stage compressor impellers from service. This amendment is prompted by an uncontained TPE331-11U turboprop engine failure and an in-flight shutdown due to the separation of the first stage Ti 6-4 compressor impeller. The actions specified by this AD are intended to prevent uncontained engine failures, in-flight shutdowns, and secondary damage.
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
