TCDS A-691

Page No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 8 Rev. No. 33 33 33 33 33 33 33 33 33 33 33 33 33 33 33 33 33 33 33 33 33 34 DEPARTMENT OF TRANSPORTATION FEDERAL AVIATION ADMINISTRATION A-691 Revision 34 Piper Aircraft, Inc J3C-40 J3C-50 J3C-50S J3C-65 J3C-65S PA-11 PA-11S March 8, 2011 AIRCRAFT SPECIFICATION NO. A-691 Type Certificate Holder Piper Aircraft, Inc. 2926 Piper Drive Vero Beach, Florida 32960 Typc Certification Holder Record The New Piper Aircraft, Inc transferred TC A-691 to Piper Aircraft, Inc on August 7, 2006. I - Model J3C-40, 2 PCLM, Approved July 14, 1938. Engine Continental A-40-4 (See Item 311A for optional engine) Fuel 73 minimum octane aviation gasoline Engine Limits For all operations, 2575 r.p.m. (40 hp) Airspeed Limits (CAS) Level flight or climb 85 mph ( 74 knots) Glide or dive 115 mph (100 knots) Propeller Limits Maximum permissible diameter 81 inches C. G. Range (+10.6) to (+22.7) See NOTE 3 for restricted limits on certain Serial Nos. below 4502. Empty Weight C. G. Range If placard "Solo flying in rear seat only" is installed (See NOTE 2): (+7.8) to (+20.0) When empty weight C. G. falls within range given, computation of critical fore and aft C. G. positions is unnecessary. Range is not valid for non-standard arrangements. Maximum Weight 1025 lb. Number of Seats 2 (one at +9 and one at +36) Maximum Baggage 20 lb. (+49) Fuel Capacity 12 gallons (-18) Oil Capacity 1 gallon (-39) A-691 Page 2 of 21 I - Model J3C-40 (cont'd) Control Surface Movements Elevator 34° Up 29° Down Rudder 30° Left 30° Right Aileron 18° Up 18° Down Stabilizer 2.5° Up 4° Down Serial Numbers Eligible 2325, 2327, 2339, 2340, 2342, 2344, 2345, 2347, 2349, 2351 and up; 2356-A and up; and 8277-1 through 8277-40. Required Equipment In addition to the pertinent required basic equipment specified in CAR 4a, the following items of equipment must be installed: Items 101, 102, 103 and 104(b). II - Model J3C-50, 2 PCLM, Approved July 14, 1938. Same as Model J3C-40 except engine installation. Engine Continental A-50-1 (See Item 311B for optional engines) Fuel 73 minimum octane aviation gasoline Engine Limits For all operations, 1900 r. p.m. (50 hp) Airspeed Limits (CAS) Level flight or climb 90 mph ( 78 knots) Glide or dive 122 mph (106 knots) Propeller Limits Maximum permissible diameter 81 inches C. G. Range (+10.6) to (+22.7) See NOTE 3 for restricted limits on certain Serial Nos. below 4502. Empty Weight C. G. Range If placard "Solo flying in rear seat only" is installed (See NOTE 2): (+8.1) to (+21.1) When empty weight C. G. falls within range given, computation of critical fore and aft C. G. positions is unnecessary. Range is not valid for non-standard arrangements. Maximum Weight 1100 lb. Number of Seats 2 (one at +9 and one at +36) Maximum Baggage 20 lb. (+49) Fuel Capacity 12 gallons (-18) Oil Capacity 1 gallon (-29) Control Surface Movements Elevator 34° Up 29° Down Rudder 30° Left 30° Right Aileron 18° Up 18° Down Stabilizer 2.5° Up 4° Down Serial Numbers Eligible 2325, 2327, 2339, 2340, 2342, 2344, 2345, 2347, 2349, 2350, 2351, and up; 2356-A and up; and 8277-1 through 8277-40. Required Equipment In addition to the pertinent required basic equipment specified in CAR 4a, the following items of equipment must be installed: Items 101, 103 and 104(a). Page 3 of 21 A-691 III - Model J3C-50S, 2 PCSM, Approved July 14, 1938. Same as Model J3C-50 except landing gear. Engine Continental A-50-1 (See Item 311B for optional engines) Fuel 73 minimum octane aviation gasoline Engine Limits For all operations, 1900 r.p.m. (50 hp) Airspeed Limits (CAS) Level flight or climb 90 mph ( 78 knots) Glide or dive 122 mph (106 knots) Propeller Limits With Edo floats: Maximum pe rmissible diameter - 76 inches With McKinley floats: Static r.p.m. at maximum permissible throttle setting: Not over 1900, not under 1725. No additional tolerance permitted Diameter: Not over 83 inches, not under 73 inches. C. G. Range (+10.6) to (+19.7) with Edo floats (+13.7) to (+19.7) with McKinley floats. See NOTE 3 for restricted limits on certain Serial Nos. below 4502. Empty Weight C. G. Range If placard "Solo flying in rear seat only" is installed (See NOTE 2): (+8.3) to (+16.8) with Edo floats (+13.2) to (+18.7) with McKinley floats When empty weight C. G. falls within range given, computation of critical fore and aft C. G. positions is unnecessary. Range is not valid for non-standard arrangements. Maximum Weight 1160 lb. with Edo floats 1130 lb. with McKinley floats Number of Seats 2 (one at +9 and one at +36) Maximum Baggage 20 lb. (+49) Fuel Capacity 12 gallons (-18) Oil Capacity 1 gallon (-29) Control Surface Movements Elevator 34° Up 29° Down Rudder 30° Left 30° Right Aileron 18° Up 18° Down Stabilizer 2.5° Up 4° Down Serial Numbers Eligible 2325, 2327, 2339, 2340, 2342, 2344, 2345, 2347, 2349, 2351, 2355 and up; 2356-A and up; and 8277-1 through 8277-40. Required Equipment In addition to the pertinent required basic equipment specified in CAR 4a, the following items of equipment must be installed: Items 101, 104(a) and 151. IV. - Model J3C-65 (Army L-4, L-4A, L-4B (Navy NE-1), L-4H, L-4J (Navy NE-2)), 2 POLM, Approved July 6, 1939. See NOTE 7 regarding conversion to 2 PCLM. Army L-4 (previously Army 0-59) is the same as Model J3C-65. Army L-4A (previously Army 0-59A) and Army L-4B are the same as Model J3C-65 except for transparent turtledeck enclosure, revised rear seat with seat back belts, addition of rear shelf and rear floorboard. Army L-4H is same as L-4A except for G. F. radio equipment and revised method of installing the transparent cockpit enclosure. Army L-4J (Navy NE-2) same as any L-4, L-4A, L-4B and L-4H except for installation of propeller, Item 1. A-691 Page 4 of 21 IV. - Model J3C-65, L-4H, L-4J (cont'd) Engine Continental A-65-1 (See Item 311C for optional engines) Fuel 73 minimum octane aviation gasoline Engine limits For all operations, 2350 r.p.m. (65 hp) Airspeed Limits (CAS) Level flight or climb 90 mph ( 78 knots) Glide or dive 122 mph (106 knots) Propeller Limits Static r.p.m. at maximum permissible thro ttle setting (No additional tolerance permitted): (a) With A-65-1 engine: Not over 2300, not under 2000. (b) With optional engines (Item 311C) and propeller Item 2 or 101: Not over 2300, not under 1950. Diameter: Not over 81 inches, not under 69.7 inches (with fixed pitch wood propeller). Not over 74 inches, not under 72 inches (with propeller Item 2). C. G. Range (+10.6) to (+22.7) See NOTE 3 for restricted limits on certain Serial Nos. below 4502. Empty Weight C. G. Range If placard "Solo flying in rear seat only" is installed (See NOTE 2): (+8.5) to (+20.3) When empty weight C. G. falls within range given, computation of critical fore and aft C. G. positions is unnecessary. Range is not valid for non-standard arrangements. Maximum Weight Serial Nos. 7842, 7845 through 7883, and 7912 and up are eligible for 1170 lb. maximum weight. These airplanes are also eligible for 1220 lb. maximum weight provided the landing gear is revised in accordance with Piper Dwgs. 31472 and 31423. Serial Nos. prior to 7912, and not listed a bove, are eligible for 1100 lb. maximum weight. These airplanes are also eligible for 1170 lb. maximum weight provided the lift struts and attachments are revised in accordance with Piper Dwgs. No. 12352, 13233 and 21642 and for further increase to 1220 lb. upon revision of the landing gear in accordance with Piper Dwgs. No. 31472 and 31423. Serial Nos. 10339 and up and 2356-A and up of Model J3C-65 eligible for 1220 lb. maximum weight. Number of Seats 2 (one at +9 and one at +36) Maximum Baggage 20 lb. (+49) Fuel Capacity 12 gallons (-18) Oil Capacity 1 gallon (-29) Control Surface Movements Elevator 34° Up 29° Down Rudder 30° Left 30° Right Aileron 18° Up 18° Down Stabilizer 2.5° Up 4° Down Serial Numbers Eligible 2325, 2327, 2339, 2340, 2342, 2344, 2345, 2347, 2349, 2351, 2355 and up; 2356-A and up; and 8277-1 through 8277-40. Required Equipment In addition to the pertinent required basic equipment specified in CAR 4a, the following items of equipment must be installed: Items 101, 102, 103 and 104(a). Page 5 of 21 A-691 V - Model J3C-65S, 2 PCSM, Approved May 27, 1940. Same as J3C-65 except landing gear. Engine Continental A-65-1 (See Item 311C for optional engines) Fuel 73 minimum octane aviation gasoline Engine Limits For all operations, 2350 r.p.m. (65 hp) Airspeed Limits (CAS) Level flight or climb 90 mph ( 78 knots) Glide or dive 122 mph (106 knots) Propeller Limits Static r.p.m. at maximum permissible thro ttle setting (No additional tolerance permitted): With Edo floats (Items 151, 206 or 208): 1. With A-65-1 engine (N ot eligible with Item 208): Not over 2300, not under 2000. 2. With optional engines (Item 311C) and Item 2 or 101: Not over 2250, not under 1930. With McKinley floats: 1. With A-65-1 engine: Not over 2300, not under 2100. 2. With optional engines (Item 311C) and Item 2 or 101: Not over 2250, not under 2050. With Wollam floats: 1. With optional engines (Item 311C) and Item 2 or 101 and 1200 lb. maximum weight: Not over 2250, not under 2050. 2. With A-65-1 engine and 1300 lb. maximum weight: Not over 2300, not under 2050. 3. With optional engines (Item 311C) and Item 2 or 101 and 1300 lb. maximum weight: Not over 2300, not under 2000. With Heath floats: 1. With A-65-1 engine or any engi ne of Item 311C and Item 2 or 101: Not over 2300, not under 2100. Diameter: With Edo, McKinley, Wollam and Heath fl oats, with any engine of Item 311C and Item 2 propeller: Not over 74 inches, not under 72 inches. With Edo floats (at maximum weight up to 1200 lb.) and McKinley floats, with A 65-1 or any Item 311C engine and Item 101 propeller: Not over 76 inches, not under 69.7 inches. With Wollam and Heath floats, with A- 65-1 or any Item 311C engine, and Item 101 propeller: Not over 72 inches, not under 70 inches. With Edo 60-1320 or 92-1400 floats at 1300 lb. maximum weight with A-65-1 or any Item 311C engine and Item 2 or 101 propeller: Not over 76 inches, not under 70 inches. C. G. Range See NOTE 3 for restricted limits on certain Serial Nos. below 4502. (+10.6) to (+19.7) with Edo fl oats and 1200 lb. maximum weight (+13.7) to (+19.7) with McKinley floats (+10.6) to (+19.7) with Wollam floats and 1200 lb. maximum weight (+10.2) to (+17.1) with Heath floats (+10.6) to (+19.0) with Edo 60-1320 or Wollam 1200 floats and 1300 lb. maximum weight (+10.6) to (+18.4) with Edo 92-1400 floats and 1100 lb. maximum weight or less (+12.0) to (+17.0) with Edo 92-1400 floats and 1300 lb. maximum weight A-691 Page 6 of 21 Empty Weight C. G. Range If placard "Solo flying in rear seat only" is installed (See NOTE 2): (+8.4) to (+17.4) with Edo fl oats and 1200 lb. maximum weight (+13.2) to (+17.3) with McKinley floats and 1160 lb. maximum weight (+8.4) to (+17.4) with Wollam floats and 1200 lb. maximum weight (+7.8) to (+14.0) with Heath floats and 1200 lb. maximum weight (+8.7) to (+16.8) with Edo 60-1320 or Wollam 1200 floats and 1300 maximum weight (+8.1) to (+15.3) with Edo 92-1400 floats and 1100 lb. maximum weight (+10.8) to (+14.3) with Edo 92-1400 floats and 1300 lb. maximum When empty weight C. G. falls within per tinent range, computation of critical fore and aft C. G. positions is unnecessary. Range is not valid for non-standard arrangements. Maximum Weight 1160 lb. with McKinley floats 1200 lb. with Edo, Wollam or Heath floats 1300 lb. with Edo 60-1320, Edo 92-1400 or Wollam 1200 floats Number of Seats 2 (one at +9 and one at +36) Maximum Baggage 20 lb. (+49) Fuel Capacity 12 gallons (-18) Oil Capacity 1 gallon (-29) Control Surface Movements Elevator 34° Up 29° Down Rudder 30° Left 30° Right Aileron 18° Up 18° Down Stabilizer 2.5° Up 4° Down Serial Numbers Eligible 2325, 2327, 2339, 2340, 2342, 2344, 2345, 2347, 2349, 2351, 2355 and up; 2356-A, and up; and 8277-1 through 8277-40. Required Equipment In addition to the pertinent required basic equipment specified in CAR 4a, the following items of equipment must be installed: Items 101, 104(a) and 151. VI - Model PA-11, 2 PCLM, Approved April 30, 1947. See NOTE 7 regarding conversion to 2 POLM. Model PA-11 is generally similar to the J3C-65 except vertical location of engine mount, cowling, forward fuselage structure, types of seats, fuel system (including gas tank location), lift struts, required equipment, and eligibility of certain equipment items, as listed. Elevator bungee (Piper Drawing number 80352) must be installed in order that the aircraft conform to the pertinent flight requirements. Engine Continental A-65-8F (See Item 311D for optional engines) Fuel 73 min. octane aviation gasoline 80 min. octane aviation gasoline with Item 311D(3) when it is approved for use as 75 hp engine in this model aircraft. Also required with Items 311D(4) and 311D(5). Engine Limits For all operations, 2300 r.p.m. (65 hp) Airspeed Limits Level flight or climb 90 mph (78 knots) (CAS) Glide or dive 122 mph (106 knots) Propeller Limits Static r.p.m. at maximum permissible throttle setting: Not over 2300, not under 1950. No additional tolerance permitted. (Same limits for Items 311D(1), 311D(2) and 311D(3).) Diameter: Not over 72 inches, not under 70 inches. Page 7 of 21 A-691 C. G. Range (+12.9) to (+22.0) or (+12.9) to (+20.0) when Item 311D(4) or 311D(5) is installed. Empty Weight C. G. Range (+13.8) to (+18.3) or (+13.8) to (+15.5) when Item 311D(4) or 311D(5) is installed. Both ranges valid for solo from either seat. When empty weight C. G. falls within per tinent range, computation of critical fore and aft C. G. positions is unnecessary. Ranges are not valid for non-standard arrangements. Maximum Weight 1220 lb. Number of Seats 2 (one at +9 and one at +36) Maximum Baggage 20 lb. (+55) Fuel Capacity 17 gallons (wing tank) (+24) Oil Capacity 1 gallon (-33.5) Control Surface Movements Elevator 34° Up 29° Down Rudder 30° Left 30° Right Aileron 18° Up 18° Down Stabilizer 2.5° Up 4° Down Serial Nos. Eligible 11-1 and up. Required Equipment In addition to the pertinent required basic equipment specified in CAR 4a, the following items of equipment must be installed: Item 101, 304(d), and 305(c). VII - Model PA-11S, 2 PCSM, Approved September 11, 1947. Same as PA-11 except for landing gear and seaplane finish in accordance with Piper Specification No. 10, or equivalent. Engine Continental A-56-8F (See Item 311D for optional engines) Fuel 80 minimum octane aviation gasoline Engine Limits For all operations, 2300 r.p.m. (65 hp) Airspeed Limits Level flight or climb 90 mph (78 knots) (CAS) Glide or dive 122 mph (106 knots) Propeller Limits Static r.p.m. at maximum permissible throttle setting: Not over 2250, not under 2050. No additional tolerance permitted. Diameter: Not over 72 inches, not under 70.5 inches. C. G. Range (+12.9) to (+20.0) Empty Weight C. G. Range (+13.7) to (+16.1) solo from either seat. 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. Maximum Weight 1350 lb. Number of Seats 2 (one at +9 and one at +36) Maximum Baggage 20 lb. (+55) A-691 Page 8 of 21 VII - Model PA-11S (cont'd) Fuel Capacity 17 gallons (wing tank) (+24) Oil Capacity 1 gallon (-33.5) Control Surface Movements Elevator 34° Up 29° Down Rudder 30° Left 30° Right Aileron 18° Up 18° Down Stabilizer 2.5° Up 4° Down Serial Nos. Eligible 11-1 and up. Required Equipment In addition to the pertinent required basic equipment specified in CAR 4a, the following items of equipment must be installed: Items 101, 206 or 209. SPECIFICATIONS PERTINENT TO ALL MODELS Datum Wing leading edge. Leveling Means Top longeron between front and rear seats. Certification Basis Type Certificate No. 691 (CAR 4a). Production Basis Approved for manufacture of spare part s only under Production Certificate No. 206. Export Limitations None. Equipment A plus (+) or minus (-) sign preceding the weight of an item indicates net weight change when that item is installed. Approval for the installation of all items of equipm ent listed herein has been obtained by the aircraft manufacturer except those items preceded by an asterisk (*). The asterisk denotes that approval has been obtained by someone other than the aircraft manufacturer. An item marked with an asterisk may not have been manufactured under a FAA monitored or approved quality control system, and therefore attention should be paid to workmanship and conformity with pertinent data called for in this specification. Propellers and Propeller Accessories 1. Propeller - Beech (Roby) R-002-205 blades +15 lb. (-51) Eligible on Models J3C-65 (L-4J - See NOTE 5) and J3C-65S (a) Pitch setting at 27 in. station: Low 13°, High 18.5° with Items 311C(1), (2) or (3) engines (b) Pitch setting at 27 in. station: Low 9.5°, High 16.5° with Item 311C(5) engines 2. Propeller - McCauley 1A90CF or 1B90CM +26 lb. (-51) Eligible with Item 311C (1 through 6) or Item 311D (1 through 3) engine Limits: Static r.p.m. at maximum permissible throttle setting: (a) Landplane and skiplane: Not over 2250, not under 1950. No additional tolerance permitted. (b) Seaplane: Not over 2250, not under 2050. No additional tolerance permitted. Diameter: Not over 74 inches, not under 72.5 inches Page 9 of 21 A-691 Propellers and Propeller Accessories (cont.) 3. Propeller - McCauley 1A90CF or 1B90CM. Eligible with Item 311D(4) or 311C(9) engine +21 lb. (-53) Static r.p.m. at maximum permissible throttle setting: Not over 2550, not under 1950. No additional tolerance permitted. Diameter: Not over 71 inches, not under 68.5 inches. 4. Propeller - Hartzell ground adjustable hub HA12U, blades 7414 to 6814 or 7214M to 6814M. +18 lb. (-51) Eligible on all models and all engines at diam eter and static r.p.m. limits shown on specification for fixed pitch wood propellers. Where no limits are specified use those of the propeller being replaced. NOTE: 7414 blades not eligible on Item 311C(5) for takeoff rating or on Item 311C(8). 5. Propeller - McCauley 1B90 or 1A90. +21 lb. (-53) Eligible with Item 311C( 10) and Item 311D(5) engines. 6. Propeller - McCauley 1A90 to 1B90. +21 lb. (-53) Eligible with Item 311C(7), 311C (8), 311C(10) or 311D(5) engines. 7. Propeller - Koppers F200/00-73E +30 lb. (-51) Eligible with Item 311D(5) engine on landplane or seaplane. Parts List Assembly No 4348. Low pitch setting 12.5° measured at 24 in. station. Static r.p.m. at maximum permissible throttle setting: Not over 2425, not under 2375. No additional tolerance permitted. Diameter: Not over 73 inches, not under 71.5 inches. Installation and operation must be accomplished in accordance with Koppers' "Installation Procedure and Operating Limitation" No. 33. 8. Propeller - Koppers F200/00-72D +30 lb. (-51) Eligible with Item 311C(9) or 311D(4 ) engine on landplane or skiplane only. Parts List Assembly No. 4369. Low pitch setting 12.7° measured at 24 in. station. Static r.p.m. at maximum permissible throttle setting: Not over 2525, not under 2475. No additional tolerance permitted. Diameter: Not over 72 inches, not under 70.5 inches. Installation and operation must be accomplis hed in accordance with Koppers' "Installation Procedure and Operating Limitation" No. 29. 9. Propeller - Sensenich fixed pitch metal model M76AK-2. +24 lb. (-53) Eligible with Items 311D(5) and 311C(9) engines only. Static r.p.m. at maximum permissible throttle setting: No additional tolerance permitted. Item 311D(5): Not over 2425, not under 1950. Item 311C(9): Not over 2550, not under 1950. Diameter: Not over 74 inches, not under 72.5 inches. 10. Propeller - Sensenich fixed pitch metal model M76AM-2. +24 lb. (-53) Eligible with Item 311D(6) engine only. Diameter: Not over 74 inches, not under 72.5 inches. 11. Propeller - McCauley fixed pitch metal model 1C90-LM7249. +23 lb. (-53) Eligible with Item 311D(6) engine only. Diameter: Not over 72 inches, not under 70.5 inches. A-691 Page 10 of 21 Propeller and Propeller Accessories (cont.) 12. Propeller - Sensenich fixed pitc h metal model M74CK +21 lb. (-53) Eligible with Items 311C(1) through 311C(6) engines only Static r.p.m. at maximum permissible throttle setting: Landplane and skiplane only: Not over 2250, not under 2050. Seaplane only: Not over 2250, not under 2100. No additional tolerance permitted. Diameter: Not over 74 inches, not under 72.5 inches. 13. Propeller - Sensenich fixed pitch metal model M74CK-2. +21 lb. (-51) Eligible with Item 311C(8) engine only. Static r.p.m. at maximum permissible throttle setting: Not over 2440, not under 2340. No additional tolerance permitted. Diameter: Not over 72 inches, not under 70 inches. 101. Propeller - Wood (fixed or adjustable pitch). +9 lb. (-51) Engines and Engine Accessories - Fuel and Oil System No aircraft of these models shall be eligible for original certification with single ignition engines after August 1, 1941. In addition, no aircraft of these models shall be eligible for recertification with single ignition engines unless such aircraft was either previously certificated with single ignition engines or was originally certificated prior to August 1, 1941. 104. Carburetor air heater: (a) D78C (for Models J3C-50, J3C-50S , J3C-65 and J3C-65S) +2 lb. (-39) (b) J2-A902 (for Model J3C-40) +2 lb. (-39) 105. Carburetor air intake and filter (Continental A 5810) (for Models J3C-65 and J3C-65S) +3 lb. (-44) 106. Carburetor air scoop and air filter (Ski nner Purifiers, Inc. +3 lb. (-43) Model S-300-A scoop and F-300 filter) (for Models J3C-65 and J3C-65S) 107. Starter and controls: McDowell Ma nufacturing Company +11 lb. (-33) (Installation Dwg. No. 26) (for A-65 and A-75 engines only) 108. Alternate fuel gauge (Scott Model A-22P) +0.5 lb. (-18) (Installed in accordance with Scott Bulletin No. I-136) 109. Oil filter, Fram PB-5 (a) Kit No. K-510, Fram Installation Dwg. No. 61542 (Models J3C-50 and J3C-50S) +5 lb. (-22.5) (Models J3C-65 and J3C-65S) +5 lb. (-27) (b) Kit No. 510, Fram Installation Dwg. No. 61624 +5 lb. (-28) (PA-11 with Continental A-65 engine) *110. Caulkins Model I, Mark II muffl ers and Model I, -12 lb. (-39) Mark I carburetor heat system eligible on M odels J3C-65 and J3C-65S with Continental A-65 series engine when installed in accordance with Caulkins Instructions and Kit No. 1 dated June 9, 1949. *111. Auxiliary Fuel Tank (6 gallon capacity) +6 lb. (+24) (a) Installed in accordance with Kit and Dwg. No. P-18 supplied by J. J. Villnave, 5607 Virginia, Kansas City, Missouri. (Eligible only on Model J3C-65 with metal spars.) (b) Installed in accordance with Kit and Dwg. Nos. P-18 and P-19 supplied by J. J. Villnave, 5607 Vi rginia, Kansas City, Missouri. (Eligible on land and seaplanes with wood spars.) Page 11 of 21 A-691 Engines and Engine Accessories - Fuel and Oil System (cont.) 302. Heater: (a) Carburetor air, Model D723C (for Models J3C-50, J3C-50S, J3C-65, and J3C-65S) +1 lb. (-39) (b) Cabin and carburetor, Model D743-C (for Models J3C-50, J3C-50S, J3C-65, and J3C-65S) +1 lb. (-39) (c) Cabin and carburetor, Model J2-A929 (for Model J3C-40) +1 lb. (-39) 308. Alternate fuel tank (9 gallons) Use actual weight change 311. Engine (Continental unless otherwise noted) (-39) (See Engine Spec. Nos. 72, 180, 205, 233) A. Model J3C-40: (1) A-40-5 +12 lb. B. Models J3C-50 and J3C-50S: (1) A-50-2 +6 lb. (2) A-50-3 or A-50-8 +10 lb.