A185E, F 84″ & 86″ Diameter

Aircraft Model(s): A185F, A185E
Applicable Engines: IO-520-D

Base Kit Includes:

QTY	DESCRIPTION	ITEM #
1	3-Blade Prop (86	HC-C3YF-1RF/F8468AR
1	3-Blade Prop (84	HC-C3YF-1RF/F8468A-2R
1	STC Document Set	SA02528CH-D
1	Polished Spinner Assembly	C-3575-P

Options:

DESCRIPTION

ITEM #

NOTES

Applicable Models:
A185 E & F

Specifications:
84-86 inch diameter 3-blade, aluminum hub propeller
2400 hour / 6 year TBO
82 pounds (propeller & spinner)
Diameter reduction allowable to 80 inches
Maximum RPM on both propellers, 2700 RPM

Placard (86″ diameter only) – “Continuous operation is prohibited above 26 inches MP between 2250-2450 RPM”.

Replaces:
McCauley C58 – 86 inch diameter 2-blade propeller
Diameter reduction allowable to 84.5 inches
Oil fill requirement per AD 91-15-04
1200-1500 hour / 5 year TBO

McCauley C401/403 – 80 inch diameter 3-blade propeller
Diameter reduction allowable to 78.5 inches
2000 hour / 6 year TBO

Advantages:
vs. McCauley C58, 2-blade model
Better take-off performance
Longer TBO
Current design, Mc threaded design obsolete
vs. McCauley C401, 3-blade model
Better take-off performance
Longer TBO
vs. McCauley C403, 3-blade model
Better take-off performance
8.2% decrease in time to accelerate to 50 KIAS
Longer TBO