Aircraft Model(s): A185F, A185E
Applicable Engines: IO-520-D
PDF: A185E, F 80″
* Note: No engine mount change is required per the STC paperwork. Changing to the heavier mounts, however, may be needed if vibration is experienced.
**Note: STC paperwork only covers floats that were originally type certified on the aircraft.
*** Note: This propeller should be especially effective for aircraft operating on floats, out of short fields, or with heavy loads.
80 inch diameter 3-bladed, aluminum hub propeller
2400 hour / 6 year TBO
78 pounds (propeller and spinner)
Diameter reduction allowable to 79 inches
McCauley C58 – 86 inch diameter 2-bladed prop
Diameter reduction allowable to 84.5 inches
Oil fill requirement per AD 91-15-04
1200-1500 hour / 5 year TBO
McCauley C403 – 80 inch diameter 3-bladed prop
Diameter reduction allowable to 78.5 inches
2000 hour / 6 year TBO
vs. McCauley C58 2-bladed model
Better take off and climb performance
Dramatically lower noise
Less blade tip erosion
Current design, Mc threaded design obsolete
vs. McCauley C403 3-bladed model
Better take-off and climb performance
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