TCDS ATC 681

MODELS: Ryan ST-A Special, 1 or 2 PO-CIM T.C. NUMBER: ATC 681 Engine Manasco Pirate C4S Placard limits Maximum, except take-Off 28.5 in.Hg., 2260 rpm (125 hp). Take-off 1 Timinute (31.0 in. Hg., 2260 xm (125 hp) 106 inches Propeller Maxinum permissible diameter - Placard speeds Level flight or climb - 123 moh True Ind. Glide or dive - 156 mph True Ind. Fuel capacity 24 gallons (fuselage tank at 24 gallons) (-10.5) T.C. NUMBER: 681 Oil capacity 3 gallons (-27) No. passengers None or 1 (+14.5) (crew 1 or 2 (+14.5, +65)) (See NOTE 6) Baggage 40 lbs. (single compartment between cockpits) (+31) Weights Empty Use actual (approximately 1046 lbs. (+6) as 2 POLM with Class I C.G. limits (+10.5) and (+14.7) (measured horizontally with engine bearers level) (See NOTE 7) Specification basis Approved Type Certificate No. 681 Serial numbers 121, 141 and up manufactured prior to 7/24/41 eligible. Approval expired as of Equipment: (Datum is wing leading edge) (* Means net increase) Class I 101. Wheel streamlines (See NOTE 9) 15 1bs. (+3) 102. 3-inch wheels (Goodyear 3MBA, 3IMBA or 3LMBM) with brakes and 18x8-3 103. Front seat cushion (+14.5) (+65) 104. Wiring for position lights 105. 8-inch streamline tail wheel (+170) 106. Partial span split trailing edge flaps, manually operated 103. Elevator trail edge tabes manually operated Oil radiator (G & O No. 326511) (-26) 109. Propeller - wood (-62) Class II 201. Carburetor air heater (Ryan Drawing 7-167) 4 lbs. (-41) 301. Fuel capacity increased 18 gallons - auxiliary fuel tank installed on front seat (eliminates provision for passenger) Fuel pump, hand wobble Extra fuel systen, etc. Front cockpit cover (+39.5) Electric (Eclipse Y-150) (-21) Bonding and shielding Booster and solenoid 307. Extra instruments (manifold pressure, bank and tum, climb, altimeter) (+41.5) 308. Dual controls (removable type) (-8) Battery (Reading 6ARL9) (+31) Radio receiver (RCA AVR-7 series) (+31) 311. New type wheel streamlines (+3) NOTE 1. Placard fuel selector valve as follows: Always take off and land with fuel feeding fran reserve. NOTE 2. When item 301 is installed, installations of itens 302(a) and (b) and 303 are required. NOTE 3: This model same as model ST(ATC-541) except for change in engine and items of equipment NOTE 4. Deleted 5/26/38. NOTE 5. Eligible for export, as follows, subject to inspection for equipment specified in Chapter XII of Inspection Handbook (5/26/38): Canada - Landplane - Skiplane - not eligible. (b) All other countries except Australia. NOTE 6. Placard front cockpit, as follows: "when operated as a single place airplane, pilot must occupy rear seat. NOTE 7. All aircraft also eligible with C.G. limits of (+10.5) 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 8. Item 101 is considered optional equipment which may be installed or renoved, subject to inspection and check of C.G. limits.