STC SA3410WE

Department of Transportation Federal Aviation Administration Supplemental Type Certificate Number SA341OWE This certificate issued to: . Gary Murdock 9873 Myrtke Drive Linden, CA 95236 Part 3 of the CIViI Air Hegulatuns, dated November 1, 1949.

Original Product - Type turificate Number: A-767 Make: Univair (Stinson) Model: 108-3, (Landplané Only, Normal Category) N6446M, Serial No. 108-4446 Description of Type Design Change:

Installation of Franklin 6AS-335-B engine and Hartzell HC-C2Y constant speed propeller, one-piece windshield, Cessna wheel pants and aileron and rudder centering springs, in accordance with Gary Murdock Report No. 1 dated February 14, 1977.

Manual Supplement dated May 24, 1977, is required with this installation. See Continuation Sheets 3 through FAA Approved Gary Murdock Airplane Flight Jimiam andfundit Data not suitable for reproduction of installation in other aircraft; therefore, they are satisfactory for Stinson 108-3 (Landplane Only), N6446M, Serial No. 105-4446 only. No additional modifications of this type are to be approved solely by reference to this Supplemental Type Certificate or to the data submitted therefor. Supplemental Type Certificate Addendum No. SA34l0WE is a part of the Certificate. A copy of this Certificate and Gary Murdock Report No. 1 shall be maintained as part of the permanent records for this modified aircraft.

Tale of applicatun: January 20, 1974 Date Reissued:

I ate of woonance May 24, 1977 Date Amended: .

FEDERA! AVIATION By directi le eleministmen Signa TOMI NITRATIO Actin Chief, Aircraft Engineering Division (Titie )

Department of Transportation Federal Aviation Administration Supplemental Type Certificate (Continuation Sheet) Number: SA34IOWE Make: May 24, 1977 STC : SA3410WE Stinson 108-3, N6446M Serial No. 108-446 Supplemental Type Certificate ADDENDUM NO. SA341OWE The conditions and limitations of Aircraft Specification No. A-767 apply except as follows:

This Addendum, which is part of Supplemental Type Certificate No. SA341OWE, prescribes conditions and limitations under which the product for which the STC was issued meets the airworthiness requirements of the Civil Air Regulations.

A copy of this Addendum shall be maintained as part of the modified aircraft permanent records.

Supplemental Type Certificate Holder: Gary Murdock.

I - Model 108-3 (Landplane only, Normal Category), as modified by STC SA3410WE.

Engine: Franklin 6AS-335-B Fuel: 100/130 Minimum Grade Aviation Gasoline Engine Limits: Takeoff (One min.) 215 hp, 2800 RPM, 41" M.P. @ S.I.

215 hp, 2800 RPM, 39.5" M.P. @ 6000 ft.

215 hp, 2800 RPM, 41" M.P. @ 13,000 ft.

Maximum continuous 190 hp, 2800 RPM, 36" M.P. @ S.L.

190 hp, 2800 RPM, 34.5" M.P. @ 7000 ft.

190 hp, 2800 RPM, 37" M.P. @ 18,000 ft.

Straight line variation between points given.

Airspeed Limits: Maximum structural cruising - 126 MPH CAS Never exceed 140 MPH CAS Propeller and Propeller Limits: Eartzell HC-C2Y constant speed Hub Model: HC-C2YF-1B Blade Model: 8459-4 Diameter: 80" Maximum

78.5" Minimum Pitch Settings: @ 30" Sta. LOW High

FAA FORM 8110-2-1 (10-69) PAGE 3 OF 7 PAGES C FAA AC 73-2651

United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate (Continuation Shect) Number SA341OWE Make: May 24, 1977 STC : SA341OWE Stinson 108-3, N6446M Serial No. 108-4446 Supplemental Type Certificate ADDENDUM NO. SA341OWE Propeller and Propeller Limits: (Continued) Governor: Woodward 210660 Spinner: Hartzell 835-20 C.G. Range: (+16.5) to (+20.5) @ 2500 1bs.

(+11.0) to (+20.5) @ 2000 1bs. or less Straight line variation between points given Maximum Weight: Takeoff 2500 1bs.

Landing 2400 1bs.

Maximum Operating Altitude: 18,000 ft.

Oil Capacity: 8.8 qt. (-49) Powerplant Instrument Markings: Tachometer: Maximum 2800 RPM (Red Radial) Normal 2000 to 2800 RPM (Green Arc) Manifold Pressure Gage:

Maximum 41" (Red Radial) Caution 36" to 41" (Yellow Arc) Normal 20" to 36" (Green Arc) Oil Temperature Gage:

235°F (Red Radial) 70° to 180°F (Green Arc) (Optional) Oil Pressure Gage:

80 psi (Red Radia..)

Minimum 25 psi (Red Radial 25 to 80 psi (Green Arc) Cylinder Head Temperaturg Gage:

Maximum 390 F (Red Radial) (Bayonet type thermocouple on #1 cylinder) Carburetor Inlet Temperature Gage:

Maximum 225°F (Red Radial) Fuel Pressure Gage:

Maximum 14 psi (Red Radial)

FAA FORM 8110-2-1 (10-69) PAGE 4 OF / PAGES C FAA AC 73-2651

United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate (Continuation Shect) Number: SA3420WE Make: May 24, 1977 STC : SA3410WE Stinson 108-3. N6446M Serial No. 108-4/46 Supplemental Type Certificate ADDENDUM NO. SA341OWE Powerplant Instrument Markings: (Continued) Fuel Pressure Gage:

Minimum (idle) 3 psi (Red Radia.

Normal 12 to 14 psi (Green Arc) Caution 3 to 12 (Yellow Arc) Airspeed Indicator Markings: Never Exceed (Vne) 140 MPH CAS (Red Radial) Caution 126 to 140 MPH CAS (Yellow Arc) Normal 65 to 126 MPH CAS (Green Arc) Flaps extended 61 to 88 MPH CAS (White Arc) Serial Numbers Eligible: 108-4446 only Certification Basis: Same as specified by Aircraft Specification No. A-767 Required Equipment: In addition to the equipment applicable and required by Aircraft Specification No. A-767, the equipment specified by Gary Murdock Installation Instructions No. 1 must be installed as a result of the incorporation of this STC.

NOTE 1. Current weight and balance report including list of equipment included in certificated empty weight, and loading instructions when necessary, must be in the aircraft.

NOTE 2. The following placards must be installed in front of and in clear view of the pilot:

(1) Adjacent to the M.P. Make:

ẠiENGINE OPERATION LIMITS" "TAKEOFF (ONE MIN.) 215 HP, 2800 RPM, 41" M.P. @ S.L.

215 HP, 2800 RPM, 39•5" M.P. @ 6000 ft.

215 HP, 2800 RPM, 41" M.P. @ 13,000 ft.

FAA FORM $110-2-1 (10-69) PAGE 5 OF 7 PAGES C FAA AC T3-9651

United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate (Continuation Sheet) Number SA3410WE Make: May 24, 1977 STC : SA341OWE Stinson 108-3, N6446M Serial No. 108-4446 Supplemental Type Certificate ADDENDUM NO. SA3LIOWE Note 2. (Continued) Engine Operation Limits MAXIMUM CONTINUOUS 190 HP, 2800 RPM, 36" M.P. @ S.I.

190 HP, 2800 RPM, 34.5" M.P. @ 7000 ft 190 HP, 2800 RPM 37" M.P. @ 18,000 ft.

STRAIGHT LINE VARIATION BETWEEN POINTS GIVEN"

(2) At the aux. fuel pump switch:

iAUX. FUEL PUMP ON OFF"

(3) At the aux. fuel pump circuit breaker:

"AUX. FUEL PUMP (10 AMP)"

(4) At the propeller control:

"PUSH TO INCREASE RPM"

(5) At the turbo control:

"TURBO-PUSH TO INCREASE BOOST"

(6) At the cowl flap control:

"COWL FLAP-PULL OPEN"

(7) At the alternator field switch:

"'ALT" "DO NOT TURN OFF ALTERNATOR IN FLIGHT EXCEPT IN EMERGENCY"

(8) On left lower instrument panel:

"ALTERNATOR C/B UNDER PANEL (40 AMP)"

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PAGE 6 OF 7 PAGES C FAA AC 73-2651

United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate (Continuation Sheet) Number SA3410WE Make: May 24, 1977 SIC : _SA3410WE Stinson 108-3, N6L46M Serial No. 108-4446 Supplemental Type Certificate ADDENDUM NO. SALIOWE Note 2. (Continued)

(9) Delete existing placards referring to maneuvers, spins and utility category. Replace with the following placard:

THIS AIRPLANE MUST BE OPERATED AS A NORMAL CATEGORY AIRPLANE IN COMPLIANCE WITH THE FAA APPROVED AIRPLANE FLIGHT MANUAL SUPPLEMENT.

ACROBATIC MANEUVERS, INCLUDING SPINS, ARE PROHIBITED"

(10) At alternate induction air control:

"ALTERNATE INDUCTION AIR - EMERGENCY USE ONLY - PULL ON" (end)

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PAGE 7 OF 7 PAGES C FAA AC 73-2651