55 Baron IO-520 – Scimitar

Manufacturer: Beechcraft
Aircraft Model(s): 55 Baron
Applicable Engines: IO-520-C, -CB

Basic Kit Includes:

QTY	DESCRIPTION	ITEM #
2	3-Bladed Propeller	PHC-C3YF-2UF/FC7391D
2	Polished Spinner	C-3567-9P
1	STC Document Set	SA02561CH-D

Kit with Alcohol Anti-ice Includes:

QTY	DESCRIPTION	ITEM #
2	3-Bladed Propeller	PHC-C3YF-2UF/FC7391DB
2	Polished Spinner	C-3567-9P
2	Alcohol Anti-ice kit	103313
1	STC Document Set	SA02561CH-D

Kit for E55(A) with Factory Air Conditioning Includes:

QTY	DESCRIPTION	ITEM #
2	3-Bladed Propeller	PHC-C3YF-2UF/FC7391D
2	Polished Spinner	C-3567-8P
1	STC Document Set	SA02561CH-D

Applicable Models:
95-C55, 95-C55A, D55, D55A, E55, E55A

Specifications:
75 inch diameter 3-bladed, “Scimitar” aluminum hub propellers
2400 hour / 6 year TBO
91.8/93.5 (with slinger) lb. each (prop & spinner combined)
93.8 lb. each – Extended hub (prop & spinner combine)
diameter reduction allowable to 73 inches

Replaces:
Hartzell BHC-C2YF-2CHUF/FC8475-6 78 in. dia. 2-bladed props
Diameter reduction allowable to 76 inches
2400 hour / 6 year TBO
71 pounds (prop & spinner combined)

Hartzell PHC-C3YF-2UF/FC7663-2R 76 in. dia. 3-bladed props
Diameter reduction allowable to 74 inches
2400 hour / 6 year TBO
89 pounds (prop & spinner combined)

McCauley C55 – 78 inch dia. 2-bladed propellers
64 pounds (prop & spinner combined)
Diameter reduction allowable to 76 inches
1200-1500 hour / 5 year TBO

McCauley C75 – 76 inch dia. 3-bladed propellers
82 pounds each (prop & spinner combined)
No diameter reduction allowable
1200 hours / 5 year TBO

Advantages:
vs. 2-bladed props
Lower noise (-1.1 to -5.8 dB(a) depending on orig.
installation
Better take-off and climb performance
Improved appearance
Less blade erosion
Longer TBO
Current design (Mc threaded design obsolete)

vs. 3-bladed props
Longer TBO
Diameter reduction allowable in event of tip damage
McCauley threaded designs obsolete

Notes:
Please note that in most cases an aftermarket air conditioner does not change the aircraft cowling, therefore the “w/o air conditioning” spinner assembly (C-3567-9P) would be needed when ordering.

On models E55 and E55A, factory air conditioned models with long nacelles requiring the longer J3YF hub are not compatible with factory installed alcohol anti-ice systems. The propeller anti-ice system must be labeled “inop” at propeller conversion installation. Hartzell does not offer a compatible alcohol anti-ice system for these aircraft at this time.

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