TCDS A-749

Page No. 1 2 Rev. No. - - DEPARTMENT OF COMMERCE CIVIL AERONAUTICS ADMINISTRATION A-749 RYAN ST-3KR (Army PT-22, PT-22A) June 1, 1949 AIRCRAFT SPECIFICATION NO. A-749 Manufacturer Ryan Aeronautical Company Lindbergh Field San Diego, California I - Model ST-3KR (Army PT-22, PT-22A), 2 POLM, Approved February 16, 1942 Engine Kinner R-5 Series 2 (See also Items 202 and 105 for optional engines). Fuel 73 min. octane aviation gasoline Engine limits For all operations, 1850 rpm (160 hp) Airspeed limits Level flight or climb 140 mph Glide or dive 190 mph Flaps extended 100 mph Propeller limits See Items 1, 2 or 101. C.G. range (+33.3) to (+38.5) Empty weight C.G. range (+29.5) to (+30.5). When empty weight C.G. falls within this range, computation of critical fore and aft C.G. positions is unnecessary. Range is not valid for non-standard arrangements. Datum Forward face of firewall. Leveling means Lugs on bulkheads 3 and 4 - right side of rear cockpit. Maximum weight 1885 lbs. No. seats 2 (one at +42 and one at +89). Maximum baggage 53 lbs. (+119) Fuel capacity 24 gals. (+10.5) one fuselage tank Oil capacity 3 gals. (-5.5) Control surface movements Wing Flaps down 28.5° Elevator trim tab up 27.5° down 31° Elevator up 35° down 26° Ailerons up 34° down 21.5° Rudder right 26° left 27° Serial Nos. eligible 1001 and up and all AAF numbers. Use manufacturer's number when available. Required equipment Items 101, 102, 103, 104. SPECIFICATIONS PERTINENT TO ALL MODELS Certification basis Type Certificate No. 749 (CAR 4a) Production basis None. Each aircraft of model ST-3KR manufactured after July 21, 1943, for civil certification, must, prior to original certification, satisfactorily pass: (a) An inspection for workmanship, materials and conformity before any covering, metal priming or final finish is applied. All woodwork may be varnished. (b) A final inspection of the completed aircraft. (c) A check of the flight characteristics. Export eligibility Eligible for export to all countries except as follows subject to the provisions of ASR 312 (MOP 2-4 contains the same information): Canada - Landplane eligible - Skiplane not eligible. A-749 2 Equipment: A plus (+) or minus (-) sign preceding the weight of an item indicates net weight change when that item is installed. Propellers and Propeller Accessories 1. Propeller - Sensenich 90H-89, 90H-90, 90HSP-89 or 46 lbs. (-38) 90HSP-90, including hub 2. Propeller - Sensenich 90HA-86, 90HA-89, 90HA-90, 53 lbs. (-38) 90HASP-90, 90HASP-90M, 42K12335, 42K12335M, or 43K26215, including hub 101. Propeller - Sensenich 88KSP-84, including hub 36 lbs. (-38) (For R-5 Series 2 engine) Engines and Engine Accessories - Fuel and Oil System 104. Carburetor air heater (Ryan Dwgs. E-1283 and E-1333) 105. Kinner R-56 engine +37 lbs. (-24) (Propeller Item 1 or 2 and lead ballast as required must be used with this engine) 201. Starter, direct drive, hand 8 lbs. ( -8) 202. Kinner R-55 engine +21 lbs. (-24) (Propeller Item 1 or 2 and lead ballast as required must be used with this engine) 203. Alternate engine mount +6 lbs. (-14) Landing Gear and Floats 102. 7.00-6 wheels (Shinn 6C5YFB) with brakes and 4-ply tires 30 lbs. ( +19) 103. Steerable tail wheel and tire (8 in. smooth contour) 4 lbs. (+200) NOTE 1. Current weight and balance report including list of equipment included in certificated weight empty, and loading instructions when necessary, must be in each aircraft at the time of original certification and at all times thereafter. When weight and balance computations indicate that the forward C.G. limit is exceeded, lead ballast of sufficient weight to meet this limit shall be installed t (+195). Ryan Drawing No. M-1114 shows an acceptable method of installing two individual three (3) lb. weights. Each weight may be lengthened and increased to a maximum of 10 lbs. provided the weight is adequately attached by 3/16 inch bolts to the bulkhead web and to the fuselage skin. When total ballast in excess of 16 lbs. is installed, the rear C.G. limit must be restricted to (+37) (17.35% MAC). NOTE 2. Placard front cockpit: "Solo flying from rear seat only." ....END....