- Holder
- Hartzell Propeller LLC
- Revision
- 35
- Revised
- November 26, 2024
- Status
- Current
- Product
- Propeller
- Certification basis
- Part 35
- Models
- 3
The release keeps the latest revision of each data sheet. Model names are as the data sheet lists them.
On this page
Models · 3
| Model | Also known as | Note |
|---|---|---|
| HC-C3Y | Formerly Hartzell Propeller, Inc., then Hartzell Propeller, Inc. | |
| EHC-C3Y | Formerly Hartzell Propeller, Inc., then Hartzell Propeller, Inc. | |
| PHC-C3Y | Formerly Hartzell Propeller, Inc., then Hartzell Propeller, Inc. |
Airworthiness directives · 10
ADs whose products are models on this data sheet, matched by model and maker.
AD 2008-13-28PropellerAD 2007-26-09Initial blade inspectionsAD 2006-24-07Propeller bladesAD 2005-18-20"FASTprop" propeller de-icersAD 2005-14-11Failed propeller bladeAD 2003-13-17Propeller bladeAD 2001-07-03OverhaulAD 94-17-13Grease Fitting HolesAD 2002-09-08HistoricalBlade Shank RadiusAD 77-12-06HistoricalBlade Shank
STCs approved under this data sheet · 7
STC SP01222WIInstallation of Aircraft Development propeller vortelators.STC SP00582NYInstallation of Prop-Guard Polyurethane Protective Tape on the leading edge of metal propellers.STC SP00400SEInstallation of various propeller electrical de-icer modelsSTC SA00823CHInstallation of various de-icer wire harnesses.STC SA01384CHInstallation of various de-icer harnesses.STC SP1964SOInstallation of replacement electrothermal type de-icing boots.STC SP1318GLInstallation of replacement electrothermal type de-icing boots.
What the data sheet says
From the PDF’s text layer, line by line: tables lose their columns. The PDF is the record.
DEPARTMENT OF TRANSPORTATION P25EA
FEDERAL AVIATION ADMINISTRATION Revision 35
Hartzell
HC-C3Y, PHC-C3Y
EHC-C3Y
TYPE CERTIFICATE DATA SHEET NO. P25EA November 26, 2024
Propellers of models described herein conforming with this data sheet (which is part of Type Certificate No. P25EA) and other
approved data on file with the Federal Aviation Administration meet the minimum standards for use in certificated aircraft in
accordance with pertinent aircraft data sheets and applicable portions of the Federal Aviation Regulations provided they are
installed, operated and maintained as prescribed by the approved manufacturer’s manuals and other approved instructions.
Type Certificate Holder Hartzell Propeller LLC
Piqua, OH 45356
Type Certificate Holder Record Hartzell Propeller Inc.
Piqua, OH 45356
Type Constant speed; hydraulic (See Notes 3 and 4)
Engine shaft Special flange (See Note 1)
Hub material Aluminum Alloy
Blade material See “Notes” column in table below
Number of blades Three
Hub models PHC-C3YD-2
HC-C3YF-1, -2, -4, -5; EHC-C3YF-1, -2; PHC-C3YF-1, -2
HC-C3YK-1, -2
HC-C3YN-2, -4, -5
HC-C3Y1R-1
HC-C3YR-1, -2, -4; (See Notes 1 and 4)
Maximum Diameter Approx. Max. Wt. Complete
Blades Continuous Takeoff Limits (For Reference Only) Notes
(See Note 2) HP RPM HP RPM (See Note 2) (See Notes 3 and 7) (See Note 10)
Non-Counterweighted Propellers HC-C3YF-1, EHC-C3YF-1, PHC-C3YF-1, HC-C3YK-1, HC-C3YR-1
6660-0 400 2700 400 2700 68” to 62” 79.0 lb. Aluminum Alloy
to 6660-6 (-0 to -6)
6890-0 350 2850 350 2850 70” to 60” 75.0 lb. Aluminum Alloy
to 6890-10 (-0 to -10)
7282-0 300 2700 300 2700 74” to 68” 68.0 lb. Aluminum Alloy
to 7282-6 (-0 to -6)
7382-0 350 2850 350 2850 75” to 65” 69.0 lb. Aluminum Alloy
to 7382-10 (-0 to -10)
7392-0 350 2850 350 2850 75” to 65” 72.5 lb. Aluminum Alloy
to 7392-10 (-0 to -10)
7451-0 400 2700 400 2700 76” to 68” 80.0 lb. Aluminum Alloy
to 7451-8 (-0 to -8)
7453-0 310 2800 310 2800 76” to 68” 71.0 lb. Aluminum Alloy
to 7453-8 (-0 to -8)
7479-2 380 2900 380 2900 74” to 68” 75.0 lb. Aluminum Alloy
to 7479-8 (-2 to -8)
7590-0 350 2850 350 2850 77” to 67” 73.0 lb. Aluminum Alloy
to 7590-10 (-0 to -10)
7663-0 350 2800 350 2800 78” to 68” 69.0 lb. Aluminum Alloy
to 7663-10 (-0 to -10)
P25EA, Revision 35 Page 2 of 12
Maximum Diameter Approx. Max. Wt.
Blade
Blades Continuous Takeoff Limits (For Reference Only) Construction
(See Note 2) HP RPM HP RPM (See Note 2) (See Notes 3 and 7) (See Note 10)
7666-0 310 2700 310 2700 78” to 68” 76.0 lb. Aluminum Alloy
to 7666-10 (-0 to -10)
7691-0 350 2850 350 2850 78” to 68” 67.0 lb. Aluminum Alloy
to 7691-10 (-0 to -10)
7693+2 400 2700 400 2700 80” to 68” 73.0 lb. Aluminum Alloy
to 7693-10 or (+2 to -10)
350 2850
7854-0 400 2700 400 2700 80” to 72” 78.0 lb. Aluminum Alloy
to 7854-8 (-0 to -8)
8068+2 350 2700 350 2700 84” to 72” 77.0 lb. Aluminum Alloy
to 8068-10 (+2 to -10)
8068-2 350 2700 310 2850 80” to 72” 77.0 lb. Aluminum Alloy
to 8068-10 (-2 to -10)
8459-0 400 2700 400 2700 86” to 72” 72.0 lb. Aluminum Alloy
to 8459-14 (-0 to -14)
8465-0 400 2700 400 2700 86” to 72” 74.0 lb. Aluminum Alloy
to 8465-14 (-0 to -14)
8467-0 400 2575 400 2575 86” to 72” 78.0 lb. Aluminum Alloy
to 8467-14 (-0 to -14)
8468-0 400 2700 400 2700 86” to 72” 75.0 lb. Aluminum Alloy
to 8468-14 (-0 to -14)
8468-6 310 2850 310 2850 80” to 72” 75.0 lb. Aluminum Alloy
to 8468-14 (-6 to -14)
8470-0 400 2700 400 2700 86” to 72” 74.0 lb. Aluminum Alloy
to 8470-14 (-0 to -14)
8475-0 400 2650 400 2650 86” to 72” 78.0 lb. Aluminum Alloy
to 8475-14 (-0 to -14)
8477-0 400 2575 400 2575 86” to 72” 81.0 lb. Aluminum Alloy
to 8477-14 (-0 to -14)
8483-0 400 2650 400 2650 86” to 72” 81.0 lb. Aluminum Alloy
to 8483-14 (-0 to -14)
9587-0 398 1810 418 1810 97” to 75” 78.0 lb. Aluminum Alloy
to 9587-22 (-0 to -22)
9587-2 320 2200 320 2200 95” to 75” 78.0 lb. Aluminum Alloy
to 9587-22 (-2 to -22)
9587-15 285 2700 285 2700 82” to 72” 78.0 lb. Aluminum Alloy
to 9587-25 (-15 to -25)
9684-0 285 2000 285 2000 96” to 80” 85.0 lb. Aluminum Alloy
to 9684-16 (-0 to -16)
Non-Counterweighted Propellers HC-C3YF-1, EHC-C3YF-1, PHC-C3YF-1, HC-C3YK-1, HC-C3YR-1: HC-C3Y1R-1
N7605-0 350 2700 350 2700 78” to 68” 67.5 lb. Composite
to N7605-10 (-0 to -10)
Page 3 of 12 P25EA, Revision 35
Maximum Diameter Approx. Max. Wt.
Blade
Blades Continuous Takeoff Limits (For Reference Only) Construction
(See Note 2) HP RPM HP RPM (See Note 2) (See Notes 3 and 7) (See Note 10)
Non-Counterweighted Propellers HC-C3YR-1
7468-0 350 2700 350 2700 76” to 66” 72.5 lb. Aluminum Alloy
to 7468-10 (-0 to -10)
7690 350 2850 350 2850 78” 60.0 lb. Aramid Composite
Non-Counterweighted Propellers HC-C3YR-1, HC-C3Y1R-1
NG8301 to 350 2700 350 2700 85” to 78” 67.8 lb. Composite
NG8301-7 (-0 to -7)
Non-Counterweighted Propellers HC-C3YF-1, PHC-C3YF-1
8068+2 350 2850 350 2850 84” to 72” 77.0 lb. Aluminum Alloy
8068-10 (+2 to -10)
NG8301 to 350 2850 350 2850 85” to 78” 66.3 lb. Composite
NG8301-7 (-0 to -7)
NG8304-0 350 2850 350 2850 85” to 78” 67.8 lb Composite
to NG8304-7 (-0 to -7)
NM8410-0 350 2850 350 2850 86” to 79” 65.4 lb Composite
to NM8410-7 (-0 to -7)
NM8411-0 350 2850 350 2850 86” to 79” 65.4 lb Composite
to NM8411-7 (-0 to -7)
8429 350 2850 350 2850 86” to 76” 73.7 lb. Aluminum Alloy
8429-10 (-0 to -10)
Counterweighted Propellers HC-C3YR-4
C7690 350 2850 350 2850 78” 70.0 lb. Aramid Composite
C7693+2 to 350 2700 350 2700 80” to 68” 76.5 lb. Aluminum Alloy
C7693-10 (+2 to -10)
NC8302-0 350 2700 350 2700 85” to 77.5” 66.0 lb. Composite
to NC8302-7.5 (-0 to -7.5)
Counterweighted Propellers PHC-C3YD-2
C9587-4 375 2275 375 2275 93” to 87” 87.0 lb. Aluminum Alloy
to C9587-10 (-4 to -10)
P25EA, Revision 35 Page 4 of 12
Maximum Diameter Approx. Max. Wt. Blade
Blades Continuous Takeoff Limits (For Reference Only) Construction
(See Note 2) HP RPM HP RPM (See Note 2) (See Notes 3 and 7) (See Note 10)
Counterweighted Propellers HC-C3YF-2, EHC-C3YF-2, PHC-C3YF-2, HC-C3YK-2,
HC-C3YN-2, HC-C3YR-2, HC-C3YF-4, HC-C3YN-4, HC-C3YR-4, HC-C3YF-5, HC-C3YN-5
C6660-0 400 2700 400 2700 68” to 62” 87.0 lb. Aluminum Alloy
to C6660-6 (-0 to -6)
C6890-0 350 2850 350 2850 70” to 60” 83.0 lb. Aluminum Alloy
to C6890-10 (-0 to -10)
C7282-0 300 2700 300 2700 74” to 68” 77.0 lb. Aluminum Alloy
to C7282-6 (-0 to -6)
C7382-0 350 2850 350 2850 75” to 65” 78.0 lb. Aluminum Alloy
to C7382-10 (-0 to -10)
C7391-0 350 2700 350 2700 75” to 65” 80.6 lb. Aluminum Alloy
to C7391-10 (-0 to -10)
C7451-0 400 2700 400 2700 76” to 68” 89.0 lb. Aluminum Alloy
to C7451-8 (-0 to -8)
C7453-0 310 2800 310 2800 76” to 68” 80.0 lb. Aluminum Alloy
to C7453-8 (-0 to -8)
C7479-2 380 2900 380 2900 74” to 68” 84.0 lb. Aluminum Alloy
to C7479-8 (-2 to -8)
C7590-0 350 2850 350 2850 77” to 67” 82.0 lb. Aluminum Alloy
to C7590-10 (-0 to -10)
C7663-0 350 2800 350 2800 78” to 68” 78.0 lb. Aluminum Alloy
to C7663-10 (-0 to -10)
C7666-0 310 2700 310 2700 78” to 68” 85.0 lb. Aluminum Alloy
to C7666-10 (-0 to -10)
C7691-0 350 2850 350 2850 78” to 68” 76.0 lb. Aluminum Alloy
to C7691-10 (-0 to -10)
C7854-0 400 2650 400 2650 80” to 72” 87.0 lb. Aluminum Alloy
to C7854-8 (-0 to -8)
C8459-0 400 2700 400 2700 86” to 72” 81.0 lb. Aluminum Alloy
to C8459-14 (-0 to -14)
C8465-0 to 400 2700 400 2700 86” to 72” 83.0 lb. Aluminum Alloy
C8465-14 (-0 to -14)
C8467-0 400 2575 400 2575 86” to 72” 87.0 lb. Aluminum Alloy
to C8467-14 (-0 to -14)
C8468-0 400 2700 400 2700 86” to 72” 84.0 lb. Aluminum Alloy
to C8468-14 (-0 to -14)
C8468-6 310 2850 310 2850 80” to 72” 84.0 lb. Aluminum Alloy
to C8468-14 (-6 to -14)
C8470-0 400 2700 400 2700 86” to 72” 83.0 lb. Aluminum Alloy
to C8470-14 (-0 to -14)
C8475-0 400 2650 400 2650 86” to 72” 87.0 lb. Aluminum Alloy
to C8475-14 (-0 to -14)
C8475F-0 400 2650 400 2650 86” to 72” 87.0 lb. Aluminum Alloy
to C8475F-14 (-0 to -14)
Page 5 of 12 P25EA, Revision 35
Maximum Diameter Approx. Max. Wt.
Blade
Blades Continuous Takeoff Limits (For Reference Only) Construction
(See Note 2) HP RPM HP RPM (See Note 2) (See Notes 3 and 7) (See Note 10)
Cont’d - Counterweighted Propellers HC-C3YF-2, EHC-C3YF-2, PHC-C3YF-2, HC-C3YK-2,
HC-C3YN-2, HC-C3YR-2, HC-C3YF-4, HC-C3YN-4, HC-C3YR-4, HC-C3YF-5, HC-C3YN-5
C8477-0 400 2575 400 2575 86” to 72” 90.0 lb. Aluminum Alloy
to C8477-14 (-0 to -14)
C8483-0 400 2650 400 2650 86” to 72” 90.0 lb. Aluminum Alloy
to C8483-14 (-0 to -14)
C9587-0 398 1810 418 1810 97” to 75” 87.0 lb. Aluminum Alloy
to C9587-22 (-0 to -22)
C9587-2 320 2200 320 2200 95” to 75” 87.0 lb. Aluminum Alloy
to C9587-22 (-2 to -22)
C9587-15 285 2700 285 2700 82” to 72” 87.0 lb. Aluminum Alloy
to C9587-25 (-15 to -25)
C9684-0 285 2000 285 2000 96” to 80” 94.0 lb. Aluminum Alloy
to C9684-16 (-0 to -16)
C9684-3 450 2133 450 2133 93” to 80” 94.0 lb. Aluminum Alloy
to C9684-16 (-3 to -16)
Counterweighted Propellers HC-C3YF-2, HC-C3YF-4, HC-C3YF-5,
HC-C3YK-2, HC-C3YN-2, HC-C3YN-4, HC-C3YN-5, HC-C3YR-2, HC-C3YR-4
C7818-0 458 2133 458 2133 80” to 70” 91.0 lb. Aluminum Alloy
to C7818-10 (-0 to -10)
Counterweighted Propellers HC-C3YR-2 and PHC-C3YF-2
C7693+2 400 2700 400 2700 80” to 68” 81.2 lb. Aluminum Alloy
to C7693-10 (+2 to -10)
Counterweighted Propellers HC-C3YF-2 and HC-C3YN-2
C9587-4 375 2275 375 2275 93” to 87” 87.0 lb. Aluminum Alloy
to C9587-10 (-4 to -10)
Counterweighted Propellers HC-C3YR-2
C7690 350 2850 350 2850 78” 75.0 lb. Aramid Composite
P25EA, Revision 35 Page 6 of 12
Certification Basis: 14 CFR Part 35 with amendment 35-1 effective February 1, 1965.
Type Certificate No. P25EA issued April 1, 1966. Aluminum-bladed models added on or after
September 27, 1967 were approved under Delegated Option Authorization provisions of 14 CFR Part
21 Subpart J.
Date of application for Type Certificate: November 22, 1965.
The following models were included under the original certification basis:
HC-C3YF-(1,2); HC-C3YK-(1,2)
The following models were added, updated or revised in accordance with 14 CFR Part 35 with
amendments 35-1 and 35-2 effective April 3, 1967:
HC-C3Y(F,K,R)-(1,2); HC-C3Y(F,N,R)-4; HC-C3YF-5; (E,P)HC-C3YF-(1,2); HC-C3YN-2
The following models were added, updated or revised in accordance with 14 CFR Part 35 with
amendments 35-1 through 35-5 effective October 14, 1980:
HC-C3Y(F,K,R)-(1,2); HC-C3Y(F,N,R)-4; HC-C3Y(F,N)-5; (E,P)HC-C3YF-(1,2); HC-C3YN-2
The following models were added, updated or revised in accordance with 14 CFR Part 35 with
amendments 35-1 through 35-6 effective August 1, 1990:
HC-C3Y(F,K,R)-(1,2); HC-C3Y(F,N,R)-4; HC-C3Y(F,N)-5; (E,P)HC-C3YF-(1,2); HC-C3YN-2;
PHC-C3YD-2
The following models were added, updated or revised in accordance with 14 CFR Part 35 with
amendments 35-1 through 35-8 effective December 23, 2008. Paragraphs 35.15, 35.35(c), 35.36,
35.38, 35.41 and 35.43 are in accordance with 14 CFR Part 21.101.
HC-C3YF-1; EHC-C3YF-1; PHC-C3YF-1; HC-C3YK-1; HC-C3YR-1
The following models were added, updated or revised in accordance with 14 CFR Part 35 with
amendments 35-1 through 35-8 effective December 23, 2008.
HC-C3YR-1; HC-C3Y1R-1
Models added after August 31, 2009 are approved in accordance with Organization Designation
Authorization procedures of 14 CFR Part 183 Subpart D
The following models were added, updated or revised in accordance with 14 CFR Part 35 with
amendments 35-1 through 35-9 effective March 19, 2013.
HC-C3YR-1; HC-C3Y1R-1, HC-C3YK-1, HC-C3YF-1, EHC-C3YF-1, PHC-C3YF-1, HC-C3YR-2,
PHC-C3YF-2, HC-C3YR-4
The following models were added, updated or revised in accordance with 14 CFR Part 35 with
amendments 35-1 through 35-10 effective August 30, 2017.
HC-C3YF-1, PHC-C3YF-1, HC-C3YR-4
Production Basis: Production Certificate no. 10
Page 7 of 12 P25EA, Revision 35
Note 1: Hub Model Designation
P HC -C 3 Y 1 R - 1 RF
F when used denotes modified pitch change system (integral on HC-C3YN-5A)
K when used with -2 models indicates specific flange mounting studs
L denotes left hand rotation
M when used denotes 21.6 sq. in. piston area and large return spring
N indicates compatibility with N shank blades (See NOTE 2)
R when used denotes 21.6 sq. in. piston area
U denotes added feather assist spring (integral on HC-C3Y( )-5 model)
Any other character denotes a minor change not affecting eligibility
Denotes specific design features (See Note 4)
-1: non-feathering, no counterweights, governor oil pressure increases pitch
-2: feathering with counterweights, governor oil pressure decreases pitch
-4: non-feathering, counterweights, governor oil pressure decreases pitch
-5: similar to -2, but compatible with turbine engine oil
F denotes flange with six 1/2” bolts and two 1/2” dowels on a 4” bolt circle
D similar to F except uses eight 1/2” bolts and no dowels
K or R denotes SAE # 2 flange with six 1/2” bolts on a 4-3/4” bolt circle
K has four 3/4” drive bushings, R has five (See Note 6)
N denotes flange with eight 9/16” bolts and two 1/2” dowels on a 4.25” bolt circle
1 when used denotes hub design modification compatible only with certain
blade models listed in the front of this Data Sheet
Hartzell blade shank size
Number of blades
Identifies basic design. “C” denotes no integral shaft extension
Hartzell Controllable
When used indicates Flange Angular Index with respect to #1 blade, viewed
clockwise facing propeller flange
Prefix Angular Index Clocking Feature Flange
Blank 90 and 270 degrees Dowel Pins F,N
Blank 0 and 180 degrees Non Counter bored holes K,R
E,P 0 and 180 degrees Dowel Pins D,F
P25EA, Revision 35 Page 8 of 12
Note 2: Blade Model Designation
FL C 76 63 D - 3R
Number when used indicates inches cut off from (or added to if +) basic diameter
Q when used denotes special 1” x 90 deg. Factory-bent tip
R when used denotes specifically rounded tip
Any other character in this location denotes tip shape
D or F denotes a dimensional modification from the original design
B or K denotes deicing boots
C when used with N7605 blades denotes material modification (See NOTE 6)
R when used denotes a rounded tip for the basic diameter
S when used denotes a square tip for the basic diameter *
Any other character denotes a minor modification not affecting eligibility
Basic blade model
Basic diameter minus two inches.** (2 inch correction does not apply to ( )9684 blade)
When used denotes counterweighted blades
Denotes blade configuration: right-hand tractor unless otherwise noted
F denotes a large pitch change knob
H denotes right-hand pusher
J denotes left-hand tractor
L denotes left-hand pusher
N denotes composite blade shank type
No prefix is used for composite blades
* Blades may incorporate either round or square tips, yet may not be marked with an “R” or “S” in their model designation.
This character is used to distinguish between two or more tip shapes available at the same diameter. Certain blades use “S”
to denote shot peening of the exterior surface. (See Note 6)
** Diameter limits are nominal diameters of the assembled propeller. They do not include the + or – 1/8 inch manufacturing
tolerance the FAA allows for propellers with a basic diameter of less than 14 feet.
Note 3: Pitch Control (See Notes 4 and 10)
(a) Approved with Hartzell governors per drawings C-4770, C-4771 and C-4772. Wt.: 4.5 lb. (See Note 10)
D - 1 - 4 Z Governor Model Designation
L when used indicates left hand rotation
Z when used indicates drive coupling type
Any other character denotes a minor change not affecting eligibility
Minor adjustment not affecting eligibility
Minor adjustment to obtain engine/propeller/governor compatibility
Basic body and major parts modification
(b) The -2, -4 and -5 models have counterweighted blades and use oil to decrease pitch. The -1 models do not
have counterweighted blades and use oil to increase pitch. (See Note 4)
(c) Maximum governor output pressure: 350 psi for all propeller models
(d) All governors must be approved as part of the aircraft installation regardless of manufacturer. (See Note 10)
Note 4: Feathering The -1 and -4 models do not feather.
The -2 and -5 models incorporate feathering and unfeathering features.
The -5 model is turbine oil compatible.
Reversing Not applicable
Piston size Piston area is 17.7 sq. in. except as noted in Note 1.
Page 9 of 12 P25EA, Revision 35
Note 5: Left-Hand Models
The left-hand version of an approved propeller model is approved at the same rating and diameter as listed for the
right-hand model. (See Notes 1 and 2)
Note 6: Interchangeability
(a) Propellers
(1) “F” type propellers with large pitch change knobs are interchangeable with corresponding propellers
with the standard pitch change system. ( See Notes 1 and 2)
(2) HC-C3YR models may replace corresponding HC-C3YK models. (See Note 1)
(b) Governors
Hartzell governors with a “Z” suffix in their model designation may be used interchangeably with
corresponding governors without the “Z”. For example, the F-6-24Z is a replacement for the F-6-24
and the F-6-24 is a replacement for the F-6-24Z.
(c) Blades
(1) Shot-peened blades may replace non shot-peened blades either individually or as a set (See Note 2)
(2) N7605C( ) blades may replace N7605( ) blades either individually or as a set. N7605( ) blades may
not replace N7605C( ) blades.
(d) Ice Protection Systems
Refer to Hartzell Service Letter HC-SL-30-260 for ice protection system component
interchangeability.
Note 7: Accessories (See Note 10)
(a) Propeller ice protection system (weight of ice protection equipment extra)
(1) Propeller models listed in this data sheet are approved for use with propeller ice protection equipment
listed in Hartzell Manual 159( ) or in other Hartzell type design data.
(2) All propeller ice protection equipment must be approved as part of the aircraft installation regardless
of manufacturer. (See NOTE 10)
(b) Propeller spinner (weight of spinner extra)
(1) Approved with Hartzell and other manufacturers’ spinners when listed on Hartzell type design data.
(2) All propeller spinners must be approved as part of the aircraft installation regardless of manufacturer.
(See NOTE 10)
Note 8: Shank Fairings Not applicable.
P25EA, Revision 35 Page 10 of 12
Note 9: Special Limits
Table of Propeller - Engine Combinations
Approved Vibrationwise for Use on Normal Category Single Engine Tractor Aircraft
The maximum and minimum propeller diameters that can be used from a vibration standpoint are shown below. No reduction
below the minimum diameter listed is permissible, since this figure includes the diameter reduction allowable for repair
purposes.
The engine models listed below are the configurations on the engine type certificate unless specifically stated otherwise.
Modifications to the engine or airframe that alter the power of the engine models listed below during any phase of operation have
the potential to increase propeller stresses and are not approved by this list. Such modifications include, but are not lim ited to,
the addition of a turbocharger or turbonormalizer, increased boost pressure, increased compression ratio, increased RPM, altered
ignition timing, electronic ignition, full authority digital engine controls (FADEC), or tuned induction or exhaust. Also, a ny
change to the mass or stiffness of the crankshaft/counterweight assembly is not approved by this list.
Hub Blade Max. Dia. Min. Dia.
Model Model Engine Model (inches) (inches) Placards
HC-C3YR F7282 LYC O-360-A1F6, A1F6D,
A1G6, A1G6D, A1H6, F1A6,
G1A6
74 73 Avoid continuous operation
below 15” manifold pressure
between 1950 and 2350 RPM
HC-C3YR F7282 LYC O-360-A1A, A1AD, A1C,
A1D, A1F, A1G, A1H, C1A,
C1C, C1E, C1F
74 73 Avoid continuous operation
below 15” manifold pressure
between 1950 and 2350 RPM
HC-C3YR F7282 LYC IO-360-A1A, A1B, A1C,
A1D, C1A, C1B, C1C, B1A,
B1B, B1D, B1E, B1F, E1A,
A1B6, A1B6D, A1D6, A1D6D,
C1C6, C1D6, C1E6, C1E6D
74 73 Avoid continuous operation
below 15” manifold pressure
between 1950 and 2350 RPM
HC-C3YR F7282 LYC O-360-C1G 74 72 Avoid continuous operation
below 15” manifold pressure
between 1950 and 2350 RPM
PHC-C3YF F7663
F7663-( )R
F7663-( )T
TCM TSIO-360-E, EB, F, FB 76 72 none
PHC-C3YF 7663 TCM IO-470-L 76 74 none
PHC-C3YF F7663 TCM O-470-U 78 76 none
HC-C3YF
EHC-C3YF
7663 TCM IO-520-A, J 76 74 none
HC-C3YF
EHC-C3YF
7663 TCM TSIO-520-A, C, H 76 74 none
PHC-C3YF 7663 TCM IO-520-B, C 76 74 none
PHC-C3YF 7663 TCM TSIO-520-B, D, E 76 74 none
PHC-C3YF F7663D-2Q TCM IO-520-B, BA, BB 76 76 none
PHC-C3YF F7663 TCM IO-550-B 76 74 none
HC-C3YR F7663R LYC IO-540-K1A5, K1B5,
K1H5
78 76 none
Page 11 of 12 P25EA, Revision 35
Hub Blade Max. Dia. Min. Dia.
Model Model Engine Model (inches) (inches) Placards
HC-C3YR F7663R LYC IO-540-K1A5, K1B5,
K1H5
78 76 none
PHC-C3YF F7691( ) TCM O-470-A, J, K, L, R, S, U 78 77 none
PHC-C3YF F7691( ) TCM IO-520-A, B, BA, BB, D,
F, J, L
78 77 Do not exceed 20” manifold
pressure below 2200 RPM
PHC-C3YF F7691( ) TCM IO-550-B, D, F 78 77 Do not exceed 20” manifold
pressure below 2200 RPM
HC-C3YF
PHC-C3YF
F7693(D)F( ) TCM TSIO-520-C, G, M, P, R, AF 80 76 none
HC-C3YR
F8068 LYC IO-540-K1A5(D),
K1B5(D), K1C5, K1D5,
K1E5(D), K1F5(D), K1G5(D),
K1H5, K1J5(D), K1K5,
L1A5(D), L1B5D, L1C5,
M1A5(D), M1B5D, M1C5,
S1A5, U1A5D, U1B5D
82 78 none
PHC-C3YF F8068 TCM IO-470-D, E, F, M, S
IO-520-A, J
IO-550-D, E, F, L
TSIO-520-C, H
82 78 none
PHC-C3YF F8068-2 TCM IO-520-D, E, F, L 80 78 none
HC-C3YF 8468-( )R TCM IO-520 series with one 4th,
one 5th and two 6th order dampers,
8.5 to 1 compression ratio or less,
300 HP at 2850 RPM or less
78 77 none
HC-C3YF
EHC-C3YF
8468 TCM IO-520-A, J 80 77 none
HC-C3YF
EHC-C3YF
8468 TCM TSIO-520-A, C, H 80 77 none
HC-C3YF
PHC-C3YF
8468 TCM IO-520-B, BA, BB, C, CB 80 77 none
HC-C3YF
PHC-C3YF
8468 TCM TSIO-520-B, BB, D, DB,
E, EB
80 77 none
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