# TCDS ATC 571: Ryan Aeronautical Company - Type: Type certificate data sheet - Status: Current - Holder: Ryan Aeronautical Company - Revision: 0 - Product: Aircraft, Small Airplane - Registered aircraft: 23, by the registry models matched to it (OpenAirDocs) - Data sheet PDF: https://openairdocs.org/files/sha256/ca/44/ca44adb360146a2e128ca6146fa44c0e199b6cec4e342750fa8330d82300a5e8 - FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/11B9AFD592AD64328525673D006300A3.0001 - Page: https://openairdocs.org/tcds/ATC%20571 ## Models (1) As the data sheet lists them. - ST-A ## What the data sheet says This is OCR from the scanned FAA data sheet. OCR can misread letters and numbers. ```text MODELS: Ryan ST-A, 1 or 2 POLM I.C. NUMBER: 571 Engine Menasco Pirate C-4 (See also Item 202.) placard limits махіти. except take-off -- in. Ng.. 2175 rpm (125 hp) Take-off (one minute) -- in.Hg.. 2175 Ipm (125 hp) Fropeller Maximum permissible diameter Placard speeds Level flight or climb - 125 mph True Ind. Glide or dive - 166 mph True Ind. Fuel capacity 24 gallons (one tank in fuselage) (-10.5) Cil capacity 2 or 2-1/2 gallons (-27) No. passengers (+14.5) (See NOTES 2 and 5.) Baggage 40 1bs. (single compartment between cockpits) (+31) (See NOTE 2) Standard weight 1600 1bs. C.G. limits (+11.0) and (+14.7) (Measured horizontally with engine bearers level) (See NOTE 6) Specification basis Approved Type Certificate No. 571 Serial numbers 103 and up manufactured prior to 7/24/41 eligible. Approval expired as of that date. EQUIPMENT: (Datum is wing leading edge) (* Means net increase) Class I: 101- Wheel streamlines (See NOTE 7) 15 1bs. (+3) 3 inch wheels (Goodyear 3MBA or 3LMBA) with brakes and 18x8-3 tires (-2) (a) Front seat cushions 3 lbs. (+14.5) Rear seat cushions 1bs. (+65) 104. Wiring for position lights 1 1k. 8 inch streamline tail wheel (+170) Partial span split trailing edge flaps manually operated 107. Elevator trailing edge tabs manually operated 108. Propeller - wood (eight tolt hur repaired) (-62) Class II: 22 lts. Menasco D-4 engine (with down draft (See Model ST-A list for details of installation) 19 1bs. * (-39) Carburetor air heater Drawing 7-167) 4 lbs. (-41) Class III: Battery (in baggage compartment) Maximum 40 1ES. (+31) Wing landing lights 3 lbs. 303. Flap operating mechanism, lever type (replacing standard worn gear type) No weight change Parachutes - one or two 20 Its. each Dual instruments in front cockpit (0) Cockpit 21 1bs. (+39-5) 307. Starter (a) Electric (Eclipse Y-150) including 23 ibs. (-21) Bonding and shielding 3 1hs. Booster and solenoid Heywood pump 10 1bs. (-21) tank and plumbing 24 1bs. (+31) (removable type) 4 1bs. (-8) New type wheel streamlines Net decrease 6 1hs. (+3) NOTE 1. Placard fuel selector valve as follows: "Always take-off and land with fuel feeding from reserve." NOTE 2. Single place type approved also. (Front seat and front seat controls removed; auxiliary 16-1/2 gallon fuel tank, 2-1/2 gallon oil tank, hand wobble pump 3 1bs., and additional baggage compartment over auxiliary fuel tank installed.) Net increase in weight 26 1bs. Baggage 53 1bs. (decrease 20 lbs. when parachute is carried). NOTE 3. This model same as model ST (ATC 541) except for change in engine. NOTE 4. Eligible for export as follows subject to inspection for equipment specified in Chapter XII of Inspection Handbook (2/15/38) : Landplane - Skiplane - not eligible. (b) All other countries. NOTE 5. Placard front cockpit as follows: "When operated as single place airplane, pilot must occupy rear seat." All aircraft also eligible with C.G. limits of (+11.0) and (+16.3) provided an elevator bungee is installed in accordance with Ryan Drawing SK-257, change C, and the elevator cables are adjusted to provide exactly 29 degrees up travel and approximately 26 degrees down travel. NOTE 7. Item 101 is considered optional equipment which may be installed or removed, subject to inspection and check of c.G. limits. ``` ## ADs None name its models. ## Registered aircraft by registry model (OpenAirDocs) - [Ryan Aeronautical ST-A](https://openairdocs.org/model/ryan-aeronautical-st-a): 23 aircraft (registry code 7830402) ## STCs approved under this data sheet (9) - [STC SA04652CH](https://openairdocs.org/stc/SA04652CH): To allow use of 100R grade aviation fuel meeting Swift Fuel, LLC specification. Swift Fuels LLC - [STC SA4503NM](https://openairdocs.org/stc/SA4503NM): Remove original cloth covering and install Ceconite covering. Ceconite Division of Poly-Fiber Inc. - [STC SA01734SE](https://openairdocs.org/stc/SA01734SE): Application of Stewart Systems synthetic fabric covering system to aircraft fuselage, wings, tail surfaces, control surfaces and related parts.. Andrew D. Humphrey - [STC SA00478CH](https://openairdocs.org/stc/SA00478CH): Installation of Cooper Superflite 102 Fabric.. Aviation Products Systems Inc. - [STC SA00680SE](https://openairdocs.org/stc/SA00680SE): Installation of Electronics International model UBG-16 or UBG-16T bar graph engine analyzer.. Electronics International - [STC SA8075SW](https://openairdocs.org/stc/SA8075SW): Installation of fiberglass covering. (M-62 SERIES PT-19) (G-73 SCHWEIZER). Razorback Fabrics Inc - [STC SA1364GL](https://openairdocs.org/stc/SA1364GL): Surrendered and incorporated into STC SA00478CH.. Cooper Aviation Supply Company, Inc. - [STC SA1626NM PAGE 2](https://openairdocs.org/stc/SA1626NM%20PAGE%202): Installation of Electronics Int'l Digital EGT/CHT Instruments and accessories. (201 Series). Electronics International - [STC SA4302NM](https://openairdocs.org/stc/SA4302NM): Installation of Electronics Int'l digital automatic engine analyzer.. Electronics International --- 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.