# TCDS A-533: The Waco Aircraft Company - Type: Type certificate data sheet - Status: Current - Holder: The Waco Aircraft Company - Revision: 0 - Revised: January 3, 1949 - Product: Aircraft, Small Airplane - Registered aircraft: 30, by the registry models matched to it (OpenAirDocs) - Data sheet PDF: https://openairdocs.org/files/sha256/31/78/3178f132aa0af36f8924f2de52f9a6f043b055d62e0fab0b3397b1af8fa0e52c - FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/FFCFDEDFCB6EB7888525673F00491CBB.0001 - Page: https://openairdocs.org/tcds/A-533 ## Models (4) As the data sheet lists them. - YKS-6 - YKC - YKC-S - ZKS-6 ## What the data sheet says From the PDF's text layer, line by line; tables lose their columns. The PDF is the record. ```text Page No. 1 2 3 Rev.No. - - - Reformatted 3/94. CIVIL AERONAUTICS ADMINISTRATION A-533 WACO YKC YKC-S YKS-6 ZKS-6 January 3, 1949 AIRCRAFT SPECIFICATION NO. A-533 Manufacturer Waco Aircraft Co. Troy, Ohio I - Models YKC, YKC-S and YKS-6, 4-5 PCL-SB (See Note 1 for explanation of model designation). Engine Jacobs L-4 Engine limits For all operations, 2000 rpm (225 H.P.) Airspeed limits Not available Propeller limits Not available C.G. range Landplane: (-14.4) to (-2.4) Seaplane: (-12.7) to (-3.7) E.W.C.G. range Landplane: (-10.4) to (-15.0) Seaplane: (-12.3) to (-13.1) Both valid as 3, 4 or 5 place, with or without optional fuel tanks. I f empty weight C.G. falls within range given, it is unnecessary to check critical forward and aft C.G. positions. These ranges are not valid for non-standard arrangements, except as noted herein. Maximum weight (a) Landplanes serials 3873 to 3877, inclusive, and 3975 (not equipped with spoilers) are eligible at 2850 lbs. (b) Landplanes serials 3978 and up eligible at 3000 lbs. These serials also eligible at 3250 lbs. provided: (1) Landing gear per Waco Dwg. 20497 is installed and structural changes per pages 8 and 9 of Waco Report 383 are made, and (2) Wing spoilers or Model UMF vertical tail surfaces are installed. (c) Seaplanes: 3250 lbs. No. seats 3, 4 or 5 (Front - 2.5, rear +27). Five-place airplanes must have: (a) Additional safety belt on rear seat. (b) Baggage capacity reduced to 70 lbs., unless actual weight and balance substantiates lesser restriction. Maximum baggage 100 lbs. (+49) Fuel capacity 50 gals. (-11) (Two 25-gal. tanks in upper wings) Oil capacity 5 gals. (-44) Serial Nos. eligible 3873 and up mfd. prior to Sept. 30, 1939. Approval expired as of that date. Required equipment Landplanes: Items 101, 102, 103, 104, 107, 108, 109, 110. Seaplanes: Items 101, 104, 109, 110, 151, 152, 153, 154, 155, 156. Seaplanes serials 3873 to 3877, inclusive, and 3975 must have wing spoilers installed in accordance with approved data. A-533 Page 2 II - Model ZKS-6, 4-5 PCL-SB (Same as Model YKS-6, except engine installation. See Note 1 for explanation of model designation). Engine Jacobs L-5 Engine limits Take-off and climb 2000 rpm (285 hp) For all other operations 1910 rpm (250 hp) Airspeed limits Level flight or climb 140 mph True Ind. Glide or dive 168 mph True Ind. Propeller limits Not available C.G. range ) Empty weight C.G. range ) Maximum weights ( Same as given under Part I above. No. seats ) Maximum baggage ) Fuel capacity 50 gals. (-11) (Two 25-gal. tanks in upper wings) Fuel valves must be placarded: "Both tanks should be turned to "ON" position during take-off, climb and landing". Oil capacity 5 gals. (-44) Serial Nos. eligible 3873 and up manufactured prior to September 30, 1939. Approval expired as of that date. Required equipment Landplanes: Items 101, 102, 103, 104, 107, 108, 109, 110, 323. Seaplanes : Items 101, 104, 109, 110, 151, 152, 153, 154, 155, 156, 323. Specifications Pertinent to All Models Datum Leading edge lower wing Leveling means Not available Certification basis Approved type certificate No. 533. (Expired September 30, 1939) Export eligibility Will be supplied on request to Office of Aviation Safety, Washington. 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 109. Propeller - wood (fixed pitch) 45 lbs. (-79.5) 204. Propeller - Hamilton Standard hub 2B20, blades 6109A-6 to 6109A-16 incl., or 6135A-6 to 6135A-16 incl., - Diameter 8'6" maximum, 7'7" minimum. (For use with Jacobs L-4 only) 104 lbs. 305. Propellers (a) Adj. pitch metal - Ham. Std. +37 lbs. (-80) (b) Fixed pitch metal - Curtiss 55501 +9 lbs. (-80) Engines and Engine Accessories - Fuel and Oil System 101. Engine ring cowl 22 lbs. 102. Starter (direct electrical) 20 lbs. 153. Starter 30 lbs. 155. Heater 5 lbs. (-51) 306. Fuel capacity (a) 70 gals. (Two 35 gal. tanks in upper wings) +18 lbs. (-11) (b) 100 gals. (Two 35 gal. tanks in upper wings and two 15 gal. +53 lbs. (-11) tanks in lower wings) 307. Four or 6 1/2 gal. oil tank No weight change A-533 Page 3 312. Engine crankcase cooling disc (Mounted on forward part of 3 lbs. engine crankcase). 314. (a) Heater 5 lbs. (-51) (b) Ventilator 2 lbs. 318. Lux remote fire extinguisher 19 lbs. (+12) or (-48) 323. Oil cooler Landing Gear 107. 8-in. streamline tail wheel (+181) 108. 6.50-10 wheels (Autofan) with 7:50-10 or 8:50-10 tires (-24) (wheels must be placarded for these tires) 151. Edo P-3300 or 38-3430 floats 304. Wheel streamlines 24 lbs. (-24) 315. 7:50-10 cactus proof tubes 10 lbs. (-24) 316. Tail wheel lock (+87) 324. Skis Use actual weight (a) Washington Aircraft 3600 (b) Federal SA-6 Electrical Equipment 103. Generator 13 lbs. 104. Battey - ahead of firewall 42 lbs. 154. Generator 10 lbs. 301. Landing lights - Grimes retractable 11 lbs. (+7) 320. Generator - Eclipse LV-180 18 lbs. Interior Equipment 110. "Throwover" type control column 201. Ambulance equipment (litter) 12 lbs. (+97) 303. Flexible instrument pane l5 lbs. (-34) 308. Flares (a) Three 1 1/2 min. 17 lbs. (+70) (b) Five 1 min. 13 lbs. (+70) 319. "Y" type control column 321. Baggage compartment and door 3 lbs. (+54) Miscellaneous 152. Large vertical surfaces including extra fin underneath fuselage replacing tail wheel. 156. Wing root fairing 310. Air brakes 10 lbs. (0) 317. Extra door and wing walk 16 lbs. (+19) Note 1. Yearly models: 1934 YKC or ZKS 1935 YKC-S or ZKS-S 1936 YKS-6 or ZKS-6 In the case of the 1936 designation: First letter shows engine; second letter shows wing; third letter shows type; number indicates year. ...END... ``` ## ADs None name its models. ## Registered aircraft by registry model (OpenAirDocs) - [Waco YKS-6](https://openairdocs.org/model/waco-yks-6): 15 aircraft (registry code 9600832) - [Waco YKC](https://openairdocs.org/model/waco-ykc): 10 aircraft (registry code 9600816) - [Waco YKC-S](https://openairdocs.org/model/waco-ykc-s): 4 aircraft (registry code 9600818) - [Waco ZKS-6](https://openairdocs.org/model/waco-zks-6): 1 aircraft (registry code 9600834) ## STCs approved under this data sheet (16) - [STC SA04652CH](https://openairdocs.org/stc/SA04652CH): To allow use of 100R grade aviation fuel meeting Swift Fuel, LLC specification. Swift Fuels LLC - [STC SA01757WI](https://openairdocs.org/stc/SA01757WI): To allow the use of UL91 or UL94 (minimum) grade aviation fuel. 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 SA01967WI](https://openairdocs.org/stc/SA01967WI): Use of GAMI G100UL High Octane Unleaded Avgas. General Aviation Modifications Inc. - [STC SA04776NY](https://openairdocs.org/stc/SA04776NY): The HIPEC Covering and Finishing System must be performed and maintained. HIPEC Aircraft Coatings Inc. - [STC SE02712SE](https://openairdocs.org/stc/SE02712SE): Installation of the Oil Scavenging Pump System for Jacobs L-4 and R-755. Henry F. Rogers - [STC SA01831WI](https://openairdocs.org/stc/SA01831WI): To allow the use of UL91 (minimum) grade aviation fuel. Petersen Aviation Inc - [STC SA02268CH](https://openairdocs.org/stc/SA02268CH): Installation of Airwolf Filter Corp. Air Oil Separator. Airwolf Filter Corporation - [STC SA01406NY](https://openairdocs.org/stc/SA01406NY): Installation of Airwolf remote mounted engine oil filter kit AFC-K017 on single and multi-engine fixed light aircraft and rotary wing. Airwolf Filter Corporation - [STC SA2586NM](https://openairdocs.org/stc/SA2586NM): Installation of J.P. Instruments temperature monitoring systems.. J P Instruments - [STC SA02428SE](https://openairdocs.org/stc/SA02428SE): Installation of an Air Stream Switch for an electric time recording device on non-pressurized aircraft. Henry F Rogers/David E Polley - [STC SA00478CH](https://openairdocs.org/stc/SA00478CH): Installation of Cooper Superflite 102 Fabric.. Aviation Products Systems Inc. - [STC SA00432SE](https://openairdocs.org/stc/SA00432SE): Installation of EGT 701 series fuel flow instrument.. J P Instruments - [STC SA00861SE](https://openairdocs.org/stc/SA00861SE): Installation of J.P. Instruments (JPI) fuel flow indicating system. J P Instruments - [STC SA02033AT](https://openairdocs.org/stc/SA02033AT): Modification to install an air-oil separator to prevent oil from being aspirated from the engine breather line.. M-20 Oil Separators LLC - [STC SA2432CE](https://openairdocs.org/stc/SA2432CE): Operation of airplane on unleaded automotive gasoline 87 minimum anti-knock index and leaded automotive gasoline, 88 minimum antiknock index (RON+MON)/2.. Petersen Aviation Inc --- 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.