# STC SA3322NM - Type: Supplemental type certificate - Status: Current, Reissued - Holder: DV Aviation Inc., United States - Description: Installation of the Soloy turbine pac (Allison 250-C20S engine). - Applied: September 15, 1983 - Status date: March 30, 2023 - Product: Aircraft, Small Airplane - Certification basis: Part 23 - Data sheets: [TCDS A16CE](https://openairdocs.org/tcds/A16CE) - Certificate PDF: https://openairdocs.org/files/sha256/70/18/70181a66a9434ccedf2573710d8f6cb47b51a9f6e66832807b8bf50006f8f4e1 - FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID181994349020230424152321.0001 - DRS record last changed: December 6, 2025 - Page: https://openairdocs.org/stc/SA3322NM ## ADs that name it (0) None. ## Approved models (4) - Textron Aviation Inc. 207 ([TCDS A16CE](https://openairdocs.org/tcds/A16CE)) - Textron Aviation Inc. 207A ([TCDS A16CE](https://openairdocs.org/tcds/A16CE)) - Textron Aviation Inc. T207 ([TCDS A16CE](https://openairdocs.org/tcds/A16CE)) - Textron Aviation Inc. T207A ([TCDS A16CE](https://openairdocs.org/tcds/A16CE)) ## What the certificate says Read from the PDF's text layer, without the form's printed wording; the layout is lost and the order can differ. The PDF is the record. (See Continuation Sheet Page 3 of 8 Pages SA3322NM DV Aviation, Inc. 16384 Airport Rd. Suite 8 Brainerd, MN 56401 23 the Federal Aviation Regulations A16CE Textron Aviation Inc. 207 and T207, 207A and T207A Installation of the Soloy Turbine Pac (Rolls-Royce 250-C20S engine modified per Fifty-Ten-Yankee STC No. SE2352NM) and related changes in accordance with FAA sealed Fifty-Ten-Yankee, LLC Master Drawing List Number 764-300, Revision AF, dated March 28, 2020, or later Federal Aviation Administration (FAA) approved revisions. Approval of this change should not be extended to other aircraft of this model on which other previously approved modifications are incorporated unless it is determined by the installer that the relationship between this change and any of those other previously approved modifications will introduce no adverse effect upon the airworthiness of that aircraft. A copy of this Certificate must be maintained as part of the permanent records for the modified aircraft. If the holder agrees to permit another person to use this certificate to alter the product, the holder shall give the other person written evidence of that permission. September 15, 1983 June 13, 1986; August 7, 1995; December 2, 2004; October 7, 2019; May 14, 2020; June 25, 2020; March 30, 2023 April 2, 1986 June 21, 1989; October 4, 1991; March 5, 1992; January 12, 1999; December 2, 2004 for Manager, West Certification Branch SA3322NM SA3322NM Certain limitations and conditions shown on Type Certificate Data Sheet No. A16CE for the Cessna Models 207,T207, 207A, and T207A remain applicable. The following list contains those limitations and conditions which have been modified and certain unmodified ones which are listed for clarity: Model: 207, T207, 207A and T207A as modified by this STC (normal category) Engine: Soloy Turbine Pac Model 780-1000-1 (Rolls-Royce Model 250-C20S modified per STC No. SE2352NM Engine Limits: Takeoff Rating (5 min.) 418 hp Max. Continuous Rating 368 hp Gas Producer (N1) Continuous Operation 105% (53,519 RPM) Transient Overspeed (15 Sec.) 106% (54,028 RPM) Propeller Shaft (Np) Continuous Operation 100% (1,810 RPM) Transient Overspeed (15 Sec.) 110% (1,990 RPM) Torque: Takeoff Rate (5 Min.) 101.4 PSI Maximum Continuous rating 89.0 PSI Turbine Outlet Temperature: Takeoff Rating (5 Min.) 810°C (1,490°F) Maximum Continuous Rating 738°C (1,360°F) Transient (6 Sec.) 843°C (1,550°F) Outside Air Temperature Limits: 100°F (39°C) at sea level, with a reduction of 3.6°F (2°C) per 1000 feet altitude, for all ground and flight operation. Oil Inlet Temperature: Maximum 107°C (225°F) Minimum for starting using MIL-L-7808G -54°C (-65°F) MIL-L-23699B -40°C (-40°F) Oil: Oils approved to MIL-L-7808G or MIL-L-23699B SA3322NM Fuel: Maximum fuel temperature is 43.3°C (110°F) MIL-T-5624, Grade JP4 or JP5 MIL-T-83133, Grade JP-8 ASTM D-1655, Jet B ASTM D-1655, Jet A or A1 JP-1 fuel conforming to ASTM D-1655, Jet A Diesel #1 fuel conforming to ASTM D-1655, Jet A (See Note 5 and 6 for limitations for cold weather fuel) Propeller and Propeller Limits: Hartzel HC-C3YN-5A/FC9587D-2 Diameter: Not over 95 in. Not under 93 in. Pitch Settings: (At 30 inch station) High Pitch 81° Low Pitch 5° Hartzell Spinner: D-3273 Soloy Prop Governor 780-3356-3 Soloy Prop Overspeed Governor 780-3360-1 Airspeed Limits (IAS): Maximum Operating 153 knots Maneuvering 134 knots Flaps extended 0°-10° 144 knots 10°-30° 100 knots Center of Gravity Limits: Center of Gravity Range: Forward: +31 inches aft of datum at 2,600 lbs. Or less, with straight line variation to +45 inches aft of datum at 4,000 lbs. Aft: +50.5 inches of datum at all weights. Reference Datum: Lower Portion of front face of firewall. Weight Limit: Maximum Takeoff Weight 4,000 lbs. Maximum Landing Weight 3,800 lbs SA3322NM Fuel Capacity: 80 gallons (73 gallons usable) 40 gallon tanks in wing at +48 inches. Maximum Operating Altitude: 25,000 ft. Oil Capacity: 9.5 quarts at -46.5 inches (see Note 1 for data on system fuel and oil) Control Surface Movements: Same as Basic Airplane Except: Rudder Right 24° 57' +1° Left 24° 57' +1° (Measured perpendicular to rudder hinge line) Right 22° +1° Left 22° +1° (Measured parallel to O.O.W.L.) Rudder Balance Limits: +0.00 inch-lbs. Minimum to +12.43 inch-lbs. Maximum (+ Denotes Trailing Edge Heavy) Elevator Tab Free Play Limits: 0.166 inches maximum (Measured at the tab trailing edge) Flight Idle Limits: Flight Operations with power control retarded below FLIGHT IDLE (14psi torque minimum) are prohibited Cessna Serial Nos. Eligible: 20700001 through 20700362 (See Note 10) 20700001 through 20700192 (See Note 11) 20700363 through 20700788 (See Continuation Sheet Page 7 of 8 Pages) Page 6 of 8 Certification Basis: SA3322NM Part 23 of the Federal Aviation Regulations, effective February 1, 1965, as amended by 23-1 through 23-6. In addition, effective Serial Numbers 20700483 and up, FAR 23.1559, effective March 1, 1978. FAR 36, dated December 1, 1968, plus Amendments 36-1 through 36-6 for serial numbers 20700363 and up; plus certain sections of FAR Part 23, including Amendments 23-1 through 23-27, effective December 8, 1980, which are required to maintain the airplane's existing level of airworthiness with the turboprop engine installed. These sections are: 23.45, 23.49, 23.65, 23.75(d), 23.77, 23.173, 23.175, 23.201, 23.253, 23.335, 23.361, 23.371, 23.629(f), 23.901, 23.903, 23.905, 23.929, 23.937, 23.939, 23.943, 23.951, 23.955, 23.977, 23.991, 23.997, 23.1013, 23.1015, 23.1017, 23.1019, 23.1041, 23.1043, 23.1045, 23.1091, 23.1093, 23.1111, 23.1121, 23.1141, 23.1143, 23.1145, 23.1155, 23.1165, 23.1305, 23.1337, 23.1505, 23.1521, 23.1527, 23.1529, 23.1545, 23.1549, 23.1557, 23.1559. In addition: - FAR 23.629(e) as amended by 23-31, effective December 28, 1984. - Special Federal Aviation Regulation 27, as amended by 27-1 and 27-2. - Part 36 of the Federal Aviation Regulations (FAR) Equipment: The following must be installed in the aircraft for airworthiness certification: (a) The basic required equipment as prescribed in the applicable airworthiness Regulations (see Certification Basis) (b) The equipment must include a current airplane flight manual plus FAA Approved Soloy Airplane Flight Manual Supplement. (c) Stall warning indicator, Cessna Drawing S1672-5. (d) Cessna Model 206 Floatplane parts for vertical fin and rudder assembly: Cessna P/N Item 1231034-9 Rudder Assembly 1231062-7 Rib Assembly - Fin Upper 1231040-1 Cover - Fin Tip 1212600-7 Stinger Assembly (e) The aircraft must be equipped with a 28-volt electrical system. (See Continuation Sheet Page 8 of 8 Pages) Page 7 of 8 Certification Basis continued: SA3322NM Note 1: Current weight and balance data including list of equipment included in certified empty Weight and loading instructions when necessary must be provided for each aircraft at the Time of airworthiness certification for return to service. The certificated empty weight and corresponding center of gravity location must include unusable fuel and full oil as follows: Unusable fuel, 49.7 lb. (7 gallons) at +48 inches. Full oil, 19 lb. (9.5 quarts) at -46.5 inches Note 2: The rating shown for the Soloy Turbine Pac 780-1000-1 engine is based on zero ram, dry Inlet air, no accessory loads, and no bleed air; and is available for a U.S. standard atmosphere at sea level. Note 3: Information essential to the maintenance and servicing of aircraft modified in accordance with this STC is contained in the applicable Cessna maintenance and overhaul instructions and in the Soloy supplements to these documents. Note 4: This change in type design is applicable to the land plane configuration only. Note 5: The maximum flight altitude is 25,000 feet, except as restricted below for the use of cold weather Fuels: (a) 6,000 feet with fuel at 110°F (43.3°C) (b) 20,000 feet with fuel at 40°F (4.4°C) or below. (c) Linear interpolation applies between the above altitude/fuel temperature data points. Note 6: Cold weather fuels and fuel additive: (a) MIL-T-5624, Grade JP-4 (b) ASTM D-1655, Jet B (c) AVGAS/Jet A, Jet A1 or JP-5 mixture (d) For flight at ambient temperatures of 40°F and below, the fuel used in this aircraft must have an anti-icing additive in compliance with MIL-I-27686D or E, or Phillips PF A55MB Page 8 of 8 End Certification Basis continued: SA3322NM Note 7: Minimum Fuel Due to the possibility of fuel starvation, takeoff or steep climbs at speeds below Vy (93 KIAS at sea level) with either fuel quantity gauge indicating in the yellow arc (1/8 fuel quantity) are prohibited. Note 8: Engine Inlet and Induction System Ice Protection Engine inlet and induction system ice protection must be accomplished by the operation of the engine alternate air system in conjunction with the engine inlet anti-ice system as follows: (a) In visible moisture at an OAT of 5°C (41°F) and below. (b) While operating in falling or blowing snow regardless of ambient temperature. Deactivation of the above systems shall not be made until the above mentioned conditions have been left and all accumulated airframe ice and/or snow has dissipated. Note 9: Placards must be displayed as indicated in the FAA approved Soloy airplane Flight Manual Supplement. Note 10: Cessna airplane serial numbers 20700001 through 20700314 require the following equipment to be eligible for turbine conversion under this STC. (a) 28 V electrical system (b) Forged heavy-duty nose fork and barrel assembly, P/N 1243800-11. (c) Optional 80 gallon fuel system (73 gallons usable). Note 11: Requires installation of Wing tip P/N 0523565 -29 Left and -30 Right. ## Every issue (3) - March 30, 2023: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/70/18/70181a66a9434ccedf2573710d8f6cb47b51a9f6e66832807b8bf50006f8f4e1) - June 25, 2020: Reissued, Historical. [certificate](https://openairdocs.org/files/sha256/02/be/02be46145098774c50176cfeb378a3554d1e417fad7af54cedb34a11565f0a3d) - December 2, 2004: Reissued, Historical. [certificate](https://openairdocs.org/files/sha256/ec/d4/ecd4b1e6ff1f0d4641f5ab4edf0f96ab92a1cde9907cfd56844bdb76d467a96d) --- OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.