- Holder
- Hartzell Propeller LLC
- Revision
- 16
- Revised
- April 2, 2025
- Status
- Current
- Product
- Propeller
- Certification basis
- Part 35
- Models
- 5
The release keeps the latest revision of each data sheet. Model names are as the data sheet lists them.
On this page
Models · 5
| Model | Also known as | Note |
|---|---|---|
| HC-F3YR-2 | Formerly TRW Hartzell Propeller | |
| HC-F3YK-2 | Formerly TRW Hartzell Propeller | |
| HC-M3YR-1 | ||
| HC-F3YK-1 | Formerly TRW Hartzell Propeller | |
| HC-F3YR-1 | Formerly TRW Hartzell Propeller |
Airworthiness directives · 6
ADs whose products are models on this data sheet, matched by model and maker.
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 P31EA
FEDERAL AVIATION ADMINISTRATION Revision 16
Hartzell
HC-F3Y, HC-M3Y
TYPE CERTIFICATE DATA SHEET NO. P31EA April 2, 2025
Propellers of models described herein conforming with this data sheet (which is part of Type Certificate No. P31EA) 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 Below
Number of blades Three
Hub models HC-F3YK-1, -2; HC-F3YR-1, -2; HC-M3YR-1 (see Notes 1 and 4)
Maximum Diameter Approx. Max. Wt. Complete Blade
Blades Continuous Takeoff Limits (For Reference Only) Construction
(See Note 2) HP RPM HP RPM (See Note 10) (See Notes 3 and 7) (See Note 10)
Non-Counterweighted Propellers HC-F3YK-1, HC-F3YR-1, HC-M3YR-1
7282-0 300 2700 300 2700 74” to 68” 71.0 lb. Aluminum Alloy
to 7282-6 (-0 to -6)
7392-0 350 2850 350 2850 75” to 65” 75.5 lb. Aluminum Alloy
to 7392-10 (-0 to -10)
7479-2 380 2900 380 2900 74” to 68” 79.0 lb. Aluminum Alloy
to 7479-8 (-2 to -8)
7663-0 310 2800 310 2800 78” to 68” 72.0 lb. Aluminum Alloy
to 7663-10 (-0 to -10)
7666-0 310 2700 310 2700 78” to 68” 79.0 lb. Aluminum Alloy
to 7666-10 (-0 to -10)
8459-0 400 2700 400 2700 86” to 72” 75.0 lb. Aluminum Alloy
to 8459-14 (-0 to -14)
8465-0 400 2700 400 2700 86” to 72” 77.0 lb. Aluminum Alloy
to 8465-14 (-0 to -14)
8467-0 400 2575 400 2575 86” to 72” 81.0 lb. Aluminum Alloy
to 8467-14 (-0 to -14)
8468-0 400 2700 400 2700 86” to 72” 78.0 lb. Aluminum Alloy
to 8468-14 (-0 to -14)
8470-0 400 2700 400 2700 86” to 72” 77.0 lb. Aluminum Alloy
to 8470-14 (-0 to -14)
8475-0 400 2575 400 2575 86” to 72” 81.0 lb. Aluminum Alloy
to 8475-14 (-0 to -14)
8477-0 400 2575 400 2575 86” to 72” 84.0 lb. Aluminum Alloy
to 8477-14 (-0 to -14)
P31EA, Revision 16 Page 2 of 6
Maximum Diameter Approx. Max. Wt. Complete Blade
Blades Continuous Takeoff Limits (For Reference Only) Construction
(See Note 2) HP RPM HP RPM (See Note 10) (See Notes 3 and 7) (See Note 10)
Non-counterweighted propellers – HC-M3YR-1
7693-0 350 2700 350 2700 78” to 68” 76.0 lb. Aluminum Alloy
to 7693-10 (-0 to -10)
Non-counterweighted propellers – HC-F3YR-1
7693+2 350 2700 350 2700 80” to 68” 76.0 lb. Aluminum Alloy
to 7693-10 (+2 to -10)
8068+2 350 2700 350 2700 84” to 72” 80.0 lb. Aluminum Alloy
to 8068-10 (+2 to -10)
NG8301-0 350 2700 350 2700 85” to 75” 65.0 lb. Composite
to NG8301-10 (-0 to -10)
Counterweighted propellers – HC-F3YK-2, HC-F3YR-2
C7479-2 380 2900 380 2900 74” to 68” 88.0 lb. Aluminum Alloy
to C7479-8 (-2 to -8)
C7663-0 310 2800 310 2800 78” to 68” 81.0 lb. Aluminum Alloy
to C7663-10 (-0 to -10)
C7666-0 310 2700 310 2700 78” to 68” 88.0 lb. Aluminum Alloy
to C7666-10 (-0 to -10)
C8459-0 400 2700 400 2700 86” to 72” 84.0 lb. Aluminum Alloy
to C8459-14 (-0 to -14)
C8465-0 400 2700 400 2700 86” to 72” 86.0 lb. Aluminum Alloy
to C8465-14 (-0 to -14)
C8467-0 400 2575 400 2575 86” to 72” 90.0 lb. Aluminum Alloy
to C8467-14 (-0 to -14)
C8468-0 400 2700 400 2700 86” to 72” 87.0 lb. Aluminum Alloy
to C8468-14 (-0 to -14)
C8470-0 400 2700 400 2700 86” to 72” 86.0 lb. Aluminum Alloy
to C8470-14 (-0 to -14)
C8475-0 400 2575 400 2575 86” to 72” 90.0 lb. Aluminum Alloy
to C8475-14 (-0 to -14)
C8477-0 400 2575 400 2575 86” to 72” 93.0 lb. Aluminum Alloy
to C8477-14 (-0 to -14)
Page 3 of 6 P31EA, Revision 16
Certification Basis: 14 CFR Part 35 with amendment 35-1 effective February 1, 1965.
Type Certificate No. P31EA issued May 1, 1967 under Delegated Option Authorization provisions of FAR
Part 21 Subpart J. Date of application for Type Certificate: April 28, 1967.
The following models were approved under the original certification basis: HC-F3YK-1, -2; HC-F3YR-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-F3YK-1, -2; HC-F3YR-1, -2
The following models were added, updated or revised in accordance with 14 CFR Part 35 with amendments
35-1through 35-6 effective August 18, 1990: HC-F3YR-1, -2; HC-M3YR-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-F3YR-1
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-F3YR-1
Production Basis: Production Certificate no. 10
Note 1: Hub Model Designation (See Notes 2, 4, 5 and 6)
HC - F 3 Y K - 1 AF
F when used denotes modified pitch change system
L when used denotes left hand rotation
A when used denotes one-piece shaft extension. Absence of “A” indicates a bolted-on extension.
N when used indicates compatibility with “N” prefix blades
Any other character denotes a minor change not affecting eligibility
Denotes specific design features
-1: non-feathering, no counterweights, governor oil pressure increases pitch
-2: feathering with counterweights, governor oil pressure decreases pitch
K denotes flange with six 1/2” bolts and four 3/4” drive bushings on a 4-3/4” bolt circle.
R denotes flange with six 1/2” bolts and five 3/4” drive bushings on a 4-3/4” bolt circle.
Hartzell blade shank size
Number of blades
Identifies basic design. “F” denotes 3.0 inch shaft extension.
Hartzell Controllable
P31EA, Revision 16 Page 4 of 6
Note 2: Blade Model Designation (See Notes 5 and 6)
L C 76 66 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 for cutoff diameter
R when used denotes specifically rounded tip for cutoff diameter.
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
Q when used denotes special 1” x 90 deg. factory-bent tip for basic diameter
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 for a two blade propeller. Add two inches for a three blade propeller.
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 or NG denotes composite blade shank type
* 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.
Note 3: Pitch Control (See Notes 4 and 10)
(a) Approved with Hartzell governors per drawings C-4770 and C-4772. Wt.: 4.5 lb.
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 models have counterweighted blades and use oil to decrease pitch. The -1 models do not have
counterweighted blades and use oil to increase pitch.
(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.
Note 4: Feathering The -1 models do not feather.
The -2 models incorporate feathering and unfeathering features.
Reversing Not applicable
Note 5: Left-Hand Models (See Notes 1 and 2)
The left-hand version of an approved propeller model is approved at the same rating and diameter as listed for the
right-hand model.
Page 5 of 6 P31EA, Revision 16
Note 6: Interchangeability (See Notes 1 and 2)
(a) Propellers
Propeller models HC-F3YR-1RF and HC-F3YR-1ARF are interchangeable.
(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
Shot-peened blades may replace non shot-peened blades either individually or as a set
(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.
(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.
Note 8: Shank Fairings Not applicable.
P31EA, Revision 16 Page 6 of 6
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-F3YR 7479 LYC TIO-541 series, 7.3 to 1
compression ration or less, one 6th,
one 5th, one 4th and one 3.5th order
dampers, 380 HP at 2900 RPM or
less
74 70 none
HC-F3YR F7663D-2Q LYC IO-540-C4B5, N1A5,
W3A5D
76 76 none
HC-F3YR F8468( )-8Q LYC IO-540-K1A5 78 78 none
HC-F3YR F8468( )-8Q LYC TIO-540-J2BD 78 78 none
Note 10: Propeller installation must be approved as part of the aircraft Type Certificate and demonstrate compliance with
the applicable aircraft airworthiness requirements.
Propeller models listed herein consist of basic hub and blade models. Most propeller models include additional
characters to denote minor changes and specific features as explained in Notes 1 and 2. Refer to the aircraft Type
Certificate Data Sheet for the specific propeller model applicable to the installation.
Propellers with composite blades must be evaluated for bird impact resistance prior to approval on any type
aircraft. Hartzell Propeller must perform tests and/or analyses based on aircraft configuration and operating
conditions to determine the potential hazard as a result of a bird impact.
Note 11: Retirement Time
(a) Life Limits and Mandatory Inspections
(1) Airworthiness limitations, if any, are specified in Hartzell Manuals 115N or 145.
(2) The propeller Certificate Management Certification Branch must evaluate the propeller
installation for each new aircraft installation to assess possible changes in the airworthiness
limitations.
Note 12: Special Notes
(a) Refer to Hartzell Manual no. 202( ) for overspeed and overtorque limits.
(b) Refer to Hartzell Service Letter HC-SL-61-61( ) for recommended overhaul periods.
END