Airworthiness directives › 2023-08-07
AD 2023-08-07 Airworthiness Directives; Allied Ag Cat Productions, Inc. Airplanes
Models named: G-164A, G-164B. Read the applicability below — it usually turns on serial or part numbers too.
Applicability*9
This AD applies to the following Allied Ag Cat Productions, Inc. airplanes, all serial numbers, certificated in any category. (1) Model G-164A airplanes with Supplemental Type Certificate (STC) No. SA7769SW, SA7966SW, or SA8720SW installed. (2) Model G-164B airplanes with STC No. SA7546SW, SA7966SW, SA7987SW, or SA8720SW installed.
Compliance
Comply with this AD within the compliance times specified, unless already done.
Required actions
Within 12 months after the effective date of this AD, install a secondary retention feature (bolt, washer, and safety wire) on the PPC lever and the PPC assembly. If rework of the PPC assembly (specifically, the shouldered shaft within the cam assembly within the PPC assembly) is required to do this installation, do the rework in accordance with the procedures in Section 3.C(3)(d)2 of Honeywell Service Bulletin TPE331-72-2190, Revision 0, dated December 21, 2011. After the rework is completed, re-identify the part number of the PPC assembly, cam assembly, and shouldered shaft, in accordance with Sections 3.C(4), 3.C(5), and 3.C(7), as applicable, of Honeywell Service Bulletin TPE331-72-2190, Revision 0, dated December 21, 2011. Note 1 to paragraph (g): Honeywell TPE331 Propeller Pitch Control Lever letter, dated August 26, 2011, to the original equipment manufacturer, contains information related to this subject.
Unsafe condition
This AD was prompted by a report of an accident caused by the detachment of the airplane's propeller pitch control (PPC) linkage from the PPC of the engine. The FAA is issuing this AD to prevent the PPC linkage from detaching from the PPC of the engine. The unsafe condition, if not addressed, could result in reduced control of the airplane.
Affected ADs
None.
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The directive text above is reproduced from the Federal Register, a work of the United States government and in the public domain. The separation into applicability, compliance and required actions is TrackAD's.*1