McCauley Long Term Storage of CP Propellers


Long Term Storage of Controllable Pitch Propellers
                   A. The following is applicable to new and overhauled propellers prior to entering service (engine installation) or at any time propeller is removed from service. Storage time is determined from date of manufacture, overhaul, or removal from aircraft.
                    (1) Storage must be in a clean and dry environment, preferably in the original shipping carton and above ground level, to minimize exposure to dirt and moisture.
                   (2) If storage period exceeds 2 years before entering service or returning to service perform the following inspection:
(a) For all propeller models, inspect externally for damage and corrosion. Inspection may be
accomplished by an A & P mechanic or international equivalent. Make a logbook entry of
compliance with Service Bulletin 137 latest version.
(b) For non-oil-filled propeller models or propellers stored with one or more propeller blades removed, remove propeller cylinder, inspect for internal corrosion and signs of deterioration, and repair as necessary. This must be accomplished only by a FAA approved propeller repair station or international equivalent in accordance with the appropriate propeller service manual. Make a logbook entry of compliance with Service Bulletin 137 latest version.
(3) For all propeller models, If storage period exceeds five (5) years, before entering service or
returning to service perform the following inspection and parts replacement:
(a) Disassemble as necessary to replace all rubber seals and lubricants. Total disassembly
(such as removing ferrules from blades) is not required unless evidence of corrosion
warrants further disassembly. This must be accomplished only by a FAA approved propeller repair station or international equivalent in accordance with the appropriate propeller service manual. Make a logbook entry of compliance with Service Bulletin
137 latest version.
(b) Inspect parts for damage and corrosion, repair/replace parts as necessary. Work must be
accomplished only by a FAA approved propeller repair station or international equivalent
in accordance with the appropriate propeller service manual. Make a logbook entry of
compliance with Service Bulletin 137 latest version.
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